CALM NORTH SUMMARY DATA TABLE
TABLE DESCRIPTION:
Site Code: Click on a site code to get site-specific data, metadate, and contact information.
Method: CALM network sites employ three primary methods of thaw depth measurement listed below and indicated by font color and letter code under the "method" column.
	1) (P) Sites in red font use spatially-oriented mechanical probing at regular intervals across a grid and/or transect(s).
	Just a number in this column referrs to the length of a transect or size of a grid in meters.
	2) (TT) Sites in blue font are use thaw-tube measurements.
	3) (T/B#) Sites in black font infer thaw depth from ground temperature measurements. "B" indicates a borehole and the following number is the depth in meters.
	* For detailed explanations of measurement procedures please see the methodology page on this website.
Site Average Annual End of Season Thaw Depth: Thaw depths collected at the end of the thawing season are reported in centimeters.
	For spatially oriented observations the average of all sampling points are listed in the summary table.
	For point observations (e.g., thaw tubes and ground temperatures) the values are for the single measurement.
	Missing values are noted by "-"
The summary table is available for download in Microsoft Excel (XLS) format
The summary table is available for download in Google Earth (KML) format
The summary table is available for download in GIS (ArcGIS Shape) format
CALM SUMMARY DATA
North America
United States (Alaska)
Alaska North Slope
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
U1	Barrow	71.31667	-156.6	1000/T	-	-		30	35	35	36	37	41	37	34	31	31	29	42	33	32	32	34	34	41	41	38	41	34	40	40	39	38	47	45	31	32	44	U1	Barrow
U2	Barrow, CRREL Plots	71.31667	-156.5833	10/T	-	23	23	29	34	34	35	37	40	37	36	29	30	28	41	35	34	35	35	36	41	39	38	40	34	39	38	39	37	43	42[1]	34	32	42	U2	Barrow, CRREL Plots
U3	Atkasuk	70.45	-157.4	1000/T	-	-	-	-	-	44	47	45	51	49	43	40	42	37	59	47	47	46	49	54	49	50	50	58	52	54	56	53	51	55	57	46	44	57	U3	Atkasuk
U4	West Dock 1 ha grid	70.3745	-148.5522	100/T/B56	-	-	-	-	-	-	30	31	34	33	28	29	29	29	35	27	34	27	30	25	29	29	34	35	31	37	37	37	35	37	-	31	31	39	U4	West Dock 1 ha grid
U5	West Dock 1 km grid	70.36667	-148.5667	1000	-	-	-	48	55	51	55	52	58	51	46	46	48	48	54	45	53	44	47	44	46	51	52	54	48	54	55	56	52	58	-	51	45	57	U5	West Dock 1 km grid
U6	Deadhorse	70.1613	-148.4653	100/T/B60	-	-	-	-	-	-	64	65	70	71	61	62	61	61	67	56	67	58	63	58	65	63	69	72	70	73	72	72	68	73	-	65	65	70	U6	Deadhorse
U7 A	Betty Pingo 1 km grid	70.28333	-148.8667	1000/T	-	-	-	52	54	55	55	55	60	54	47	48	50	50	58	49	56	46	51	48	49	54	56	58	49	54	57	56	51	53	-	52	46	57	U7A	Betty Pingo 1 km grid
U7 B	Betty Pingo MNT	70.2835	-148.8928	100	-	-	-	-	-	41	44	42	44	39	37	34	37	37	42	35	40	32	34	32	34	36	40	43	35	39	41	41	35	44	-	38	35	44	U7B	Betty Pingo MNT
U7 C	Betty Pingo WET	70.275	-148.919	100	-	-	-	-	-	43	48	41	46	42	41	36	41	38	45	36	43	34	40	37	40	43	45	44	41	43	46	45	43	50	-	42	41	46	U7C	Betty Pingo WET
U8	Franklin Bluff	69.6739	-148.7219	100/T/B60	-	-	-	-	-	-	63	66	72	66	55	58	55	55	64	53	65	57	57	60	66	65	69	70	68	68	67	69	62	73	-	61	65	72	U8	Franklin Bluff
U9 A	Happy Valley	69.1466	-148.8483	100/T/B40	-	-	-	-	-	-	36	40	47	44	-	-	-	35	-	32	39	33	43	38	43	40	42	44	42	42	46	45	44	44	-	40	42	48	U9A	Happy Valley
U9 B	Happy Valley 1 km grid	69.1482	-148.8505	1000/T	-	-	-	44	45	43	43	48	48	44	40	42	40	40	45	41	47	40	44	49	44	47	43	47	47	46	46	45	43	47	41	38	38	44	U9B	Happy Valley 1 km grid
U10	Lupine Hill	69.12883	-148.5928	100	-	-	-	-	-	48	46	40	-	48	41	41	41	46	42	41	46	36	48	51	54	57	49	54	51	50	49	52	52	53	-	49	46	55	U10	Lupine Hill
U11 A	Imnavait Creek  1 km grid	68.6114	-149.3101	1000/T	-	-	56	60	60	48	45	50	56	50	44	46	39	47	48	55	48	47	52	58	63	59	55	55	50	59	64	60	55	58	52	48	48	54	U11A	Imnavait Creek  1 km grid
U11 B	Imnavait Creek WET	68.611	-149.3145	100	-	-	-	-	-	53	54	56	54	53	45	49	39	46	51	44	49	45	54	58	64	56	51	60	55	55	63	57	62	60	48	52	49	57	U11B	Imnavait Creek WET
U11 C	Imnavait Creek MAT	68.611	-149.30933	100	-	-	-	-	-	43	43	47	46	47	37	43	30	40	42	39	38	41	45	47	55	47	50	53	46	54	49	53	47	52	41	42	39	45	U11C	Imnavait Creek MAT
U12 A	Toolik 1 km grid	68.6215	-149.6063	1000/T	-	-	-	-	-	45	47	49	54	48	44	46	37	41	40	51	48	51	50	55	61	55	50	51	50	51	53	56	50	56	40	53	47	51	U12A	Toolik 1 km grid
U12 B	Toolik MAT	68.624	-149.61817	100	-	-	-	-	-	43	47	45	51	52	41	45	33	37	45	44	41	38	44	47	53	47	48	51	45	50	45	50	52	51	34	45	43	49	U12B	Toolik MAT
U13	Toolik LTER	68.61667	-149.6	P/T	36	28	40	46	36	43	33	46	44	45	38	32	33	40	40	37	39	41	35	51	45	43	38	43	40	46	45	46	43	-	-	-	-		U13	Toolik LTER
U14	Galbraith Lake	68.4774	-149.5024	100/T/B75	-	-	-	-	-	-	51	59	60	56	-	46	39	47	-	44	48	54	53	59	59	50	56	57	55	57	57	55	54	-	-	50	51	54	U14	Galbraith Lake
U15	Chandalar Shelf	68.0691	-149.5804	30/T/B61	-	-	-	-	-	-	35	*	35	36	32	32	24	30	39	38	35	42	36	38	43	41	44	37	36	38	41	42	41	37	-	40	40	46	U15	Chandalar Shelf
U26	Ivotuk  1 km grid	68.48333	-155.7333	1000	-	-	-	-	-	-	-	-	-	-	55	51	43	-	53	51	54	56	50	55	57	53	50	54	52	-	56	54	51	55	-	-	41	-	U26	Ivotuk  1 km grid
U56	56 Mile	69.5006	-148.5592	100	-	-	-	-	-	-	61	68	71	62	63	61	63	64	66	56	65	54	65	64	67	75	69	70	64	65	66	66	64	68	57	63	63	66	U56	56 Mile
U32 A	Sagwon Hills MNT	69.441	-148.67033	100	-	-	-	-	-	60	61	58	67	59	55	52	55	52	56	47	60	52	59	61	62	65	61	60	55	57	60	61	59	60	50	56	56	60	U32A	Sagwon Hills MNT
U32 B	Sagwon Hills MAT	69.401	-148.8056	100	-	-	-	-	-	40	40	40	43	41	37	38	33	36	42	28	40	25	41	42	43	47	38	41	42	41	37	40	42	40	33	40	37	43	U32B	Sagwon Hills MAT
U20	Drew Point	70.8645	-153.9067	T/B640	-	-	-	-	-	-	-	-	39	37	36	29	33	29	42	39	40	40	41	41	42	44	46	45	40	41	42	-	-	-		-	-	-	U20	Drew Point
U21	Inigok	69.98962	-153.0938	T/B625	-	-	-	-	-	-	-	-	47	48	42	40	51	44	61	42	43	37	37	41	43	41	44	45	37	36	41	-	-	-		-	-	-	U21	Inigok
U22	Fish Creek	70.33523	-152.052	T/B735	-	-	-	-	-	-	-	-	30	29	28	27	30	28	37	30	29	27	27	29	33	31	34	33	28	29	30	-	-	-		-	-	-	U22	Fish Creek
U23	Awuna	69.1704	-158.0067	T/B884	-	-	-	-	-	-	-	-	41	42	35	31	32	30	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	inactive	U23	Awuna
U24	Umiat	69.3957	-152.1428	T/B640	-	-	-	-	-	-	-	-	42	41	33	32	35	32	43	28	40	31	35	35	37	39	40	38	37	34	34	-	-	-	-	-	-	-	U24	Umiat
U25	Tunalik	70.1959	-161.0781	T/B393	-	-	-	-	-	-	-	-	44	45	41	41	42	42	55	53	54	63	57	63	64	64	61	58	51	52	54	-	-	-	-	-	-	-	U25	Tunalik
U29	Niguanak	69.8894	-142.9839	T/B/30?	-	-	-	-	-	-	-	-	-	-	-	27	30	30	45	37	57	58	55	44	59	60	65	62	45	44	-	-	-	-	-	-	inactive	inactive	U29	Niguanak
U30	Koluktak	69.7516	-154.6176	T/B/	-	-	-	-	-	-	-	-	-	120	118	117	120	110	120	120	120	120	120	120	120	120	120	120	120	120	120	-	-	-	-	-	-	-	U30	Koluktak
U31	Marsh Creek	69.7776	-144.7933	T/B/	-	-	-	-	-	-	-	-	-	-	-	-	41	40	51	44	66	66	67	66	48	-	-	-	36	36	41	-	-	-	-	-	-	-	U31	Marsh Creek
U33	South Meade	70.6285	-156.8353	T/B/	-	-	-	-	-	-	-	-	-	-	-	-	-	-	42	39	41	40	37	42	43	43	41	45	39	-	-	-	-	-	-	-	inactive	inactive	U33	South Meade
U34	Camden Bay	69.972	-144.7706	T/B/	-	-	-	-	-	-	-	-	-	-	-	-	-	-	42	47	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	inactive	U34	Camden Bay
U35	Awuna2	69.1555	-158.0305	T/B/	-	-	-	-	-	-	-	-	-	-	-	-	-	-	52	56	63	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	inactive	U35	Awuna2
U36	Red Sheep Creek	68.6816	-144.8421	T/B/	-	-	-	-	-	-	-	-	-	-	-	-	-	-	59	65	65	68	64	68	76	-	-	-	-	-	-	-	-	-	-	-	inactive	inactive	U36	Red Sheep Creek
U37	Piksiksak	70.0366	-157.0814	T/B/	-	-	-	-	-	-	-	-	-	-	-	-	-	-	34	40	50	55	53	55	55	54	49	53	46	45	45	-	-	-	-	-	-	-	U37	Piksiksak
U38	East Teshekpuk	70.5685	-152.965	T/B/	-	-	-	-	-	-	-	-	-	-	-	-	-	-	24	27	32	31	34	33	36	34	38	35	25	29	31	-	-	-	-	-	-	-	U38	East Teshekpuk
U39	Ikpikpuk	70.4417	-154.3656	T/B/	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	inactive	U39	Ikpikpuk
U60	Teshekpuk Lake Observatory	70.723267	-153.83604	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	29[2]	25[3]	27[4]	26[5]	U60	Teshekpuk Lake Observatory
Alaska Interior
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
U16	Old Man	66.45	-150.6167	100/T/B63	-	-	-	-	-	-	33	37	44	39	35	-	-	39	43	41	42	43	38	38	46	43	42	36	43	39	43	43	45	46	-	39	43	46	U16	Old Man
U17	Wickersham	65.1667	-147.9	TT/P	43	41	42	45	44	47	36	40	43	39	49	46	46	52	38	41	52	53	54	53	48	48	49	52	54	56	61	55	59	55	47	60	55	57	U17	Wickersham
U18	Bonanza Creek LTER	64.7	-148.1333	TT/P/T/B44	47	49	50	*	55	58	45	50	51	40	59	59	56	56	55	63	59	67	58	55	59[6]	98*	121*	131*	168*	178*	192*	220*	244*	234*	228*	273*	288*	243*	U18	Bonanza Creek LTER
U19	Pearl Creek	64.9	-147.8167	TT/P	70	63	71	66	66	72	53	61	65	55	58	59	61	61	61	70	67	80	79	77	78	77	76	77	90	101	143	120	154	170	161	167	168	186	U19	Pearl Creek
U41	Farmers Loop	64.88	-147.67	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	58	54	57	57	53	57	57	57	55	59	56	62	60	62	64	67	64	64	65	U41	Farmers Loop
U40A	Mentasta Fen	62.55	-143.3667	100/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	51	58	-	56	-	-	-	-	-	-	65		-	64	-	U40A	Mentasta Fen
U40B	Tanada Muskeg	62.51667	-143.3667	100/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	60	70	-	-	-	-	-	-	-	-	78		-	73	-	U40B	Tanada Muskeg
U42	Kotlik	63.02131	-163.5607	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	51	47	48	56	52	52	-	68	-	-	70		-	-	-	U42	Kotlik
U43	Emmonak	62.78478	-164.52623	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	63	51	58	60	67	63	-	78	-	-	-		-	-	-	U43	Emmonak
U44	Chevak	61.52786	-165.61778	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	59	47	53	-	61	63	-	-	-	-	87	-	-	inactive	inactive	U44	Chevak
U45	Marshall	61.87901	-162.05759	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	56	48	50	59	53	-	-	-	-	-	-	-	-	inactive	inactive	U45	Marshall
U46	St.Mary's	62.04755	-163.23412	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	83	66	72	72	-	80	82	88	-	-	79	-	-	-	-	U46	St.Mary's
U47	Circle	65.82819	-144.07843	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	66	73	81	78	76	84	-	-	-	-	89	56	-	-	-	U47	Circle
U48	Fort Yukon	66.62076	-145.1035	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	90	94	100	91	94	99	-	-	-	-	-	-	-	inactive	inactive	U48	Fort Yukon
U49	Hess Creek	65.65724	-149.08443	100/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	38	46	48	47	37	51	42	48	-	-	56	-	59			U49	Hess Creek
U50	Galena	64.7333	-156.78334	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	39	44	51	51	46	60	-	-	-	-	35	-	-	inactive	inactive	U50	Galena
U51	Eagle	64.7777	-141.10954	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	32	65	63	52	41	51	-	63	46	48	51	49	-	-	-	U51	Eagle
U52	Allakaket	66.54491	-152.64539	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	45	60	49	34	55	-	-	-	-	-	-	-	inactive	inactive	U52	Allakaket
U53	Ruby	64.73486	-155.48461	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	53	63	66	64	66	-	-	-	-	-	-	-	inactive	inactive	U53	Ruby
U54	Nome Creek	65.36988	-147.0609	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	46	50	-	43	43	47	53	-	-	-	-	-	-	-	U54	Nome Creek
U55	Arctic Village	68.13013	-145.54007	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	70	69	69	62	65	-	55	-	-	70	-	-	-	-	U55	Arctic Village
U59	Venetie	67.03829	-146.40263	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	70	72	45	66	-	-	-	-	-	-	-	-	inactive	inactive	U59	Venetie
U57	Nenana	64.55446	-149.08339	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	61	59	60	60	65	59	67	-	-	77	80	90			U57	Nenana
U58	Dot Lake	63.67475	-144.14597	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	64	49	68	57	-	-	-	-	-	-	-	-	inactive	inactive	U58	Dot Lake
Alaska Seward Peninsula
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
U27	Council Grid	64.8442	-163.7202	1000	-	-	-	-	-	-	-	-	-	73	53	71	53	59	-	76	-	-	75	63	65	71	57	55	60	68	75	64	69	85	-	76	71	81	U27	Council Grid
U28	Kougarok	65.454	-164.6268	1000	-	-	-	-	-	-	-	-	-	65	47	56	52	54	-	75	-	-	62	61	64	68	56	58	58	57	58	63	61	70	-	63	61	70	U28	Kougarok
CANADA
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
C1	Alexandria Fiord	78.88333	-75.91667	100	-	-	-	-	-	43	49	-	-	57	62	58	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C1	Alexandria Fiord
C3 A	North Head (thaw tube)	69.71972	-134.4619	TT	-	61	62	63	64	62	60	<66	70	66	59	62	60	59	-	-	-	64	63	-	-	-	-	-	-	56	57	-	61	-	-	61	55	-	C3A	North Head (thaw tube)
C3 B	North Head (grid)	69.71972	-134.4619	100	-	-	-	-	-	-	-	-	52	52	43	43	44	45	50	40	52	48	50	44	-	50	-	42	-	-	-	-	-	-	-	-	-	inactive	C3B	North Head (grid)
C4 A	Taglu (Thaw tube)	69.36917	-134.9486	TT/T/B30	-	-	111	<119	118	>124	112	118	>148	>132	-	117	110	124	119	101	129	132	114	138	-	171	-	-	-	-	-	-	-	-	-	-	-	inactive	C4A	Taglu (Thaw tube)
C4 B	Taglu (grid)	69.36917	-134.9486	100	-	-	-	-	-	-	-	-	104	110	109	100	100	96	99	80	96	94	91	86	94	94	91	85	-	-	-	-	-	-	-	-	-	inactive	C4B	Taglu (grid)
C5 A	Lousy Point (Thaw tube)	69.21889	-134.2911	TT/T/B30	-	81	78	80	86	85	75	<89	91	84	64	70	64	73	68	68	77	73	68	67	74	72	83	78	81	82	77	83	73	-	-	77	75	-	C5A	Lousy Point (Thaw tube)
C5 B	Lousy Point  (grid)	69.21889	-134.2911	100	-	-	-	-	-	-	-	-	64	62	52	53	54	53	55	49	61	55	59	55	-	-	63	51	-	-	-	-	-	-	-	-	-	inactive	C5B	Lousy Point  (grid)
C6	Parsons Lake	68.96667	-133.55	T	79	80	85	84	91	89	84	90	80	75	78	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C6	Parsons Lake
C7 A	Reindeer Depot  (Thaw tube)	68.68472	-134.1458	TT	-	-	127	129	132	136	134	135	140	137	134	136	123	129	122	115	134	128	131	129	137	138	154	150	144	146	151	145	146	-	-	-	157	-	C7A	Reindeer Depot  (Thaw tube)
C7 B	Reindeer Depot  (grid)	68.68472	-134.1458	100	-	-	-	-	-	-	-	-	-	-	113	117	108	101	-	104	121	109	111	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C7B	Reindeer Depot  (grid)
C8 A	Rengleng River  (Thaw tube)	67.795	-134.1261	TT	-	-	102	106	111	111	108	110	116	111	110	108	108	105	107	103	115	113	110	-	-	-	-	-	-	111	112	112	102	-	-	-	119	-	C8A	Rengleng River  (Thaw tube)
C8 B	Rengleng River   (grid)	67.795	-134.1261	100	-	-	-	-	-	-	-	-	82	78	80	77	75	72	-	71	83	80	81	78	-	84	85	-	79	76	-	-	-	-	-	-	-	inactive	C8B	Rengleng River   (grid)
C9 A	Mountain River  (Thaw tube)	65.67361	-128.8292	TT	-	-	58	59	62	62	58	59	62	57	59	53	53	54	48	48	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C9A	Mountain River  (Thaw tube)
C10	Pump Station	65.28333	-126.8833	T/P	62	66	64	58	60	63	61	77	78	77	80	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C10	Pump Station
C11 A	Norman Wells   (Thaw tube)	65.19306	-126.4689	TT	-	-	64	63	61	61	59	59	66	64	64	66	64	60	60	61	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C11A	Norman Wells   (Thaw tube)
C11 B	Norman Wells   (grid)	65.19306	-126.4689	100	-	-	-	-	-	-	-	-	50	49	45	45	47	41	39	46	48	47	50	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C11B	Norman Wells   (grid)
C12	Great Bear River	64.91667	-125.5833	T/P	71	72	72	72	69	69	63	69	87	86	86	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C12	Great Bear River
C13	Ochre River	63.46639	-123.6928	TT	-	-	-	<58	60	58	63	<65	66	65	65	64	64	64	58	62	66	67	-	-	-	-	69	-	72	-	-	70	-	-	-	-	-	-	C13	Ochre River
C14 A	Willowlake River	62.69667	-123.065	TT	-	-	-	79	83	84	90	87	89	91	82	86	88	86	80	82	89	88	-	-	90	-	91	-	89	-	91	-	102	-	-	-	-	-	C14A	Willowlake River
C14 B	Willowlake River	62.69667	-123.065	100	-	-	-	-	-	-	-	-	-	-	-	74	78	72	73	78	88	87	88	84	-	87	-	83	-	-	-	-	-	-	-	-	-	inactive	C14B	Willowlake River
C15 A	Fort Simpson	61.88778	-121.6017	TT/T	-	-	-	95	106	123	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C15A	Fort Simpson
C15 B	Fort Simpson	61.88778	-121.6017	100	-	-	-	-	-	-	-	-	-	76	85	84	82	76	77	91	93	99	98	88	-	104	-	96	-	101	-	-	-	-	-	-	-	inactive	C15B	Fort Simpson
C16	Lake Hazen; Ellesmere Island	81.40072	-71.38333	T	-	-	-	-	47	51	47	46	52	43	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C16	Lake Hazen; Ellesmere Island
C17	Sheldrake River	56.63333	-76.1	T	121	134	107	131	134	-	154	157	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C17	Sheldrake River
C18	Tanquary Fiord; Ellesmere Island	81.40072	-76.70937	100/T	-	-	-	-	-	-	-	-	-	57	54	57	56	59	58	59	60	59	56	61	58	66	66	58	56	63	67	62	50	-	-	-	-	-	C18	Tanquary Fiord; Ellesmere Island
C19	Eureka; Ellesmere Island	80.01667	-85.75	1000	-	-	-	-	-	-	-	52	53	-	49	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C19	Eureka; Ellesmere Island
C20	Baker Lake	64.16667	-95.5	T/B3	-	-	-	-	-	-	-	120	170	174	189	193	-	-	178	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C20	Baker Lake
C21	Marmot Mountain	52.8	-118.1167	T	336	352	362	220	354	272	240	192	-	342	96	152	84	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	C21	Marmot Mountain
C22	Dawson	63.94054	-138.59157	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	26	32	39	45	37	52	-	-	-	-	-	-	-	-	inactive	C22	Dawson
C23	Teslin	60.44943	-133.52016	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	55	46	53	52	58	65	-	-	-	-	-	-	-	-	inactive	C23	Teslin
C24	Beaver Creek	62.3377	-140.83835	50/P/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	42	48	42	52	54	-	-	-	-	-	-	-	-	inactive	C24	Beaver Creek
C25	Ukkusiksalik National Park	65.87808	-89.36717	100/TT/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	50	-	52	43	-	-	-	-	-	-	C25	Ukkusiksalik National Park
C26	Borden Peninsula, Sirmilik NP	73.0054	-80.68725	100/TT/T														-	-	-	-	-	-	-	-	62	65	43	51	50	54	40	46[7]	-[8]	-	-	-	-	C26	Borden Peninsula, Sirmilik NP
C27	Owl River, Auyuittuq NP	66.87932	-64.69728	100/TT/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	27	29	36	35	26	28	26	33	25	-	-	-	-	-	-	C27	Owl River, Auyuittuq NP
C28	Bylot Island, Sirmilik NP	72.81072	-79.32928	100/TT/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	53	-	50	50	49	46	45	51	35	49[9]	-[10]	-	-	-	-	C28	Baylot Island, Sirmilik NP
Russia
Russian European north
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
R2	Ayach-Yakha, Vorkuta	67.58333	64.18333	100/T	-	-	-	-	-	-	70	63	65	64	69	73	76	77	78	81	84	89	87	86	89	88	91	93	91	90	92	80	85	87	90	91	90	94	R2	Ayach-Yakha, Vorkuta
R23	Talnik	67.33333	63.73333	100	-	-	-	-	-	-	-	-	76	91	111	111	110	113	125	131	137	138	152	144	138	144	161	156	-	150	169	155	158	167	149	151	178		R23	Talnik
R24	Bolvansky	68.3	54.5	100	-	-	-	-	-	-	-	-	-	89	106	106	104	113	120	115	114	125	124	112	104	107	>135[11]	117	102	110	111	88	110	104	120[12]	128[13]	118		R24	Bolvansky
R24 A	Kashin Island	68.23333	53.85	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	58	64	88	87	65	80	109	76	84	83	123	98	115		R24A	Kashin Island
R44	Umbozero; Kola Peninsula	67.7723958	34.182046	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	160	160	165	160	162	163	-	-	-	-	-	inactive	inactive	R44	Umbozero; Kola Peninsula
R52	Seida	67.06556	62.92508	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	48	52	53	56	60	53	54	54	60	62	58	68	R52	Seida
West Siberia
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
R1	Nadym; West Siberia	65.314861	72.864194	100/T/B10	-	-	-	-	-	-	-	119	134	129	126	132	143	126	134	141	129	129	136	101[14]	114	129	134	136	164	163	186	148	178	176	197	196	199	199	R1A	Nadym; West Siberia
R1b	Nadym WET; West Siberia	65.23375	72.518417	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	95	95	96	107	108	100	108	125	121	147	158	R1B	Nadym WET; West Siberia
R3	Marre Sale, Yamal Peninsula	69.71667	66.75	1000/T/B10	-	-	-	-	-	131	110	92	93	92	106	111	115	109	114	116	116	114	114	85[15]	98	102	127	115	102	122	133	98[16]	107	120	137	120	118	127	R3	Marre Sale, Yamal Peninsula
R4	Parisento, Gydan Peninsula	70.11667	75.58333	1000	-	-	82	91	-	94	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	R4	Parisento, Gydan Peninsula
R5	Vaskiny Dachy, Yamal Peninsula	70.28333	68.9	100/T/B10	-	-	-	84	85	95	89	81	93	87	92	92	92	*	94	97	94	92	93	76[17]	87	87	102	103	93	102	114	102	94	94	104	101	102		R5	Vaskiny Dachy, Yamal Peninsula
R5a	Vaskiny Dachi, Yamal Peninsula	70.2755	68.89164	50	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	72	75	47[18]	67	67	77	80	71	76	87	66	66	72	76	76	77		R5A	Vaskiny Dachi, Yamal Peninsula
R5b	Vaskiny Dachi, Yamal Peninsula	70.2955	68.88347	50	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	72	73	81[19]	65	65	77	78	70	77	91	75	70	73	82	82	84		R5B	Vaskiny Dachi, Yamal Peninsula
R5c	Vaskiny Dachi, Yamal Peninsula	70.30139	68.84131	50	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	112	113	82[20]	106	114	128	126	111	129	144	118	116	114	135	123	125		R5C	Vaskiny Dachi, Yamal Peninsula
R5d	Vaskiny Dachi, Yamal Peninsula	70.27417	68.89078	50	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	41	48	54	39	40	46	51	52	49		R5D	Vaskiny Dachi, Yamal Peninsula
R50a	Urengoy Gas Field GP5	66.313250	76.903478	100/T/B10	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	84	65[21]	77	72	87	70	76	85	74	69	111	103	120	114	120		R50A	Urengoy Gas Field GP5
R50b	Urengoy Gas Field GP15	67.47791	76.69529	100/T/B10	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	84	65[22]	80	82	95	92	84	93	96	93	101	102		107	112		R50B	Urengoy Gas Field GP15
R53	Harp, Polar Urals	66.723483	66.080488	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-[23]	-	-	-	-	-	-	99	94	100	111	134	-	90	125	R53	Harp, Polar Urals
R54a	Gyda, Gydan Peninsula	70.8893	78.4171	50	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	104	90	94	100	113	102	102		R54A	Gyda, Gydan Peninsula
R54b	Gyda, Gydan Peninsula	70.8906	78.4308	P700	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	66	61	60	63	73	70	63		R54B	Gyda, Gydan Peninsula
R54c	Gyda, Gydan Peninsula	70.8699	78.5478	25	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	67	66	69	77	73	70		R54C	Gyda, Gydan Peninsula
R55	Bely Island (silt)	73.32694	70.08528	50	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	54	50	53	60	55	41	59	68	57	53	54	65	55	54	58	R55A	Bely Island (silt)
R55a	Bely Island (sand)	73.32861	70.08833	25	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	100[24]	90	98	114	112	91	111	130	115	107	109	131	121	123	125	R55B	Bely Island (sand)
R56	Oktyabrskyy	66.709167	66.567778	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	68	76	85	92	64	74	84	103	111	-	-	R56	Oktyabrskyy
R57	Labytnangy	66.696667	66.358889	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	43	51	46	52	37	45	50	56	57	-	-	R57	Labytnangy
R58	Erkuta	68.225278	69.144444	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	82	84	94	102	101	-	-	R58	Erkuta
R59	Salekhard	66.54395	66.73125	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	59	65	72	R59	Salekhard
R60	Gornoknyazevsk	66.569882	66.880857	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	80	85	74	R60	Gornoknyazevsk
R61	Novyy Urengoy	66.05003	76.64494	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	186	132	172	163	R61	Novyy Urengoy
Central Siberia
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
R6	Labaz Lake, Taimyr	72.38333	99.5	100/T	-	-	-	-	42	50	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-		-	-	-	inactive	R6	Labaz Lake, Taimyr
R7	Levinson Lessing Lake, Taimyr	74.53333	98.6	100/T	-	-	-	-	36	42	34	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-		-	-	-	inactive	R7	Levinson Lessing Lake, Taimyr
R8	Tiksi (Game), Lena Delta	71.58333	128.7833	1000/T	-	-	-	-	-	-	-	40	40	42	47	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-		-	-	-	inactive	R8	Tiksi (Game), Lena Delta
R28	Svjatoy Nos cape (East Siberian sea)	71.86167	141.0102	100	-	-	-	-	-	-	-	-	-	-	-	38	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-		-	-	-	inactive	R28	Svjatoy Nos cape (East Siberian sea)
R29 A	Bykovsky (Lena delta) (edoma)	71.7855	129.4192	100	-	-	-	-	-	-	-	-	-	-	-	27	-	35	25	33	35	44	38	28	38	39	33	26	35	-[25]	-	-	-		-	-	-	inactive	R29A	Bykovsky (Lena delta) (edoma)
R29 B	Bykovsky (Lena delta) (alas)	71.7855	71.41917	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	26	33	32	44	37	25	28	35	30	24	33	30	30	26	36	28	41	31	35	32	R29B	Bykovsky (Lena delta) (alas)
R29 C	Bykovsky (Lena delta) (edoma new)	71.7855	129.4192	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	34	29	30	38	32	42	36	38	34	R29C	Bykovsky (Lena delta) (edoma new)
R32	Talnah (Norilsk Region)	69.43333	88.46667	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	81	91	90	94	94	94	96	104	86	95	102	84	106	104	113	95	122	113	102	R32	Talnah (Norilsk Region)
R40	Igarka	67.48135	86.4347	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	70	67	62	67	68	68	75	86	90	-	89	88	101	102	105	103	R40	Igarka
R42	Tuymada (Yakutsk region)	62.0133	129.65683	50/TT	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	203	199	197	201	201	201	203	201	201	203	201	205	206	208	208	206	R42	Tuymada (Yakutsk region)
R43	Neleger (Yakutsk region)	62.31618	129.49952	50/TT	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	124	122	123	123	124	129	126	125	121	121	119	124	124	130	133	121	R43	Neleger (Yakutsk region)
R46	Chara Belenky	56.76038	118.18903	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	59	49[26]	61	-	61	41	-	-	-	47	-	R46	Chara Belenky
R47	Chara Most	56.906264	118.28067	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	55	42[27]	53	-	54	46	-	-	-	-	-	R47	Chara Most
R51	Samoylov	72.369775	126.48063	150	-	-	-	-	-	-	-	-	-	-	-	-	43	48	-	50	46	52	54	42	58	57	55	46	51	53	45	46	54	51	59	63	52	57	R51	Samoylov
North East Siberia
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
R12 A	Kuropatochya River; Kolyma	70.91667	156.6333	100/T/B15	-	-	-	-	-	-	37	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	25	R12A	Kuropatochya River; Kolyma
R12 B	Kuropatochya River; Kolyma	70.91667	156.6333	100	-	-	-	-	-	-	27	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	inactive	R12B	Kuropatochya River; Kolyma
R13 A	Cape Chukochii; edoma,Kolyma	70.08333	159.5833	100/T/B30	-	-	-	-	-	-	-	37	-	36	33	38	44	49	-	50	42	55	50	36	52	45	43	47	-	36	46	43	43	43	47	43	40	41	R13A	Cape Chukochii; edoma,Kolyma
R13 B	Cape Chukochi, alas, Kolyma	70.08333	159.9167	100	-	-	-	-	-	-	-	-	-	-	31	39	38	48	-	46	32	56	37	25	46	46	41	47	-	27	41	38	44	44	46	44	33	33	R13B	Cape Chukochi, alas, Kolyma
R14	Chukochya River, Kolyma	69.48333	156.9833	100/T/B25	-	-	-	-	-	-	42	-	41	38	41	-	-	-	-	47	44	-	39	46	49	47	46	42	-	48	41	49	47	49	48	48	-	-	R14	Chukochya River, Kolyma
R15 A	Konkovaya River, Kolyma	69.38333	158.4667	100/T/B50	-	-	-	-	-	-	39	44	25	32	-	36	-	-	-	-	30	60[28]	38	28	48	32	30	30	-	31	33	31	30	32	39	-	33	35	R15A	Konkovaya River, Kolyma
R15 B	Konkovaya River, Kolyma	69.38333	158.4667	100/T/B50	-	-	-	-	-	-	-	-	-	36	-	32	-	-	-	-	44	54	44	39	45	54	46	43	-	44	41	39	40	41	42	-	37	38	R15B	Konkovaya River, Kolyma
R16	Segodnya Pingo, Kolyma	69.08333	158.9	100	-	-	-	-	-	-	38	-	-	30	-	-	-	-	-	54	42	75	49	43	56	72	54	50	57	60	57	56	52	51	56	52	46	35	R16	Segodnya Pingo, Kolyma
R17	Akhmelo channel; Kolyma	68.81667	161	100/T	-	-	-	-	-	-	44	56	43	-	45	47	-	51	55	54	53	60	49	47	56	61	53	55	64	55	57	55	70	55	73	63	63	51	R17	Akhmelo channel; Kolyma
R18	Mt. Rodinka; Kolyma	68.9255	161.5046	100/T	-	-	-	-	-	-	45	67	72	74	75	75	76	81	85	82	83	86	80	78	84	84	77	74	79	83	85	87	89	90	84	66	70		R18	Mt. Rodinka; Kolyma
R18 A	Mt. Rodinka; Kolyma ( 10 m grid)	68.7417	161.5042	10/T	-	-	-	-	-	-	-	-	-	-	-	-	-	91	97	100	96	104	98	96	104	104	97	94	101	102	109	111	119	117	117	72	103		R18A	Mt. Rodinka; Kolyma ( 10 m grid)
R19	Lake Glukhoe, Kolyma	68.8	160.95	100	-	-	-	-	-	-	72	56	65	67	72	-	-	84	92	95	93	-	92	92	103	94	83	89	95	101	112	79	89	98	105	83	101	98	R19	Lake Glukhoe, Kolyma
R20	Malchilovskaya Channel, Kolyma	68.51667	161.4333	100	-	-	-	-	-	-	54	-	48	52	46	50	-	48	56	53	54	57	55	49	53	59	54	61	65	59	53	64	64	63	62	59	60	54	R20	Malchilovskaya Channel, Kolyma
R21	Lake Akhmelo, Kolyma	68.83333	161.0333	100/T/B15	-	-	-	-	-	-	85	-	70	83	84	84	-	96	103	113	101	117	100	96	110	105	92	96	108	96	111	85	97	101	114	94	99	95	R21	Lake Akhmelo, Kolyma
R22	Alazeya River	69.31667	154.9833	100/B23	-	-	-	-	-	-	-	-	46	46	*	-	-	-	51	53	-	57	53	51	57	50	52	49	45	56	53	54	55	54	58	56	58	54	R22	Alazeya River
R25	Jakutskoe Lake	69.85	159.5	100	-	-	-	-	-	-	-	-	-	23	37	38	-	-	-	55	45	65	43	42	65	60	41	41	-	39	42	43	49	48	51	47	44	44	R25	Jakutskoe Lake
R26	Panteleikha, Kolyma	68.41667	161.2167	100	-	-	-	-	-	-	45	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	inactive	R26	Panteleikha, Kolyma
R31	Allaiha (Indigirka basin)	70.55	147.4333	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	39	42	44	48	47	49	52	52	50	47	47	46	49	41	40	-	-	45	-	-	R31A	Allaiha (Indigirka basin)
R31 A	Allaiha (Indigirka basin, alas)	70.56667	147.4167	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	42	42	47	38	37	-	-	-	-	-	R31B	Allaiha (Indigirka basin, alas)
R35	Omolon	68.73333	158.9	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	41	34	32	52	45	44	40	40	46	32	43	41	39	48	39	39	37	R35	Omolon
R36	Andryushkino	9.16667	154.4333	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	38	37	43	43	41	31	35	34	44	38	38	42	43	44	43	43	45	46	43	R36	Andryushkino
R37 A	Khomus-1	69.98333	153.5833	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	51	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	inactive	R37A	Khomus-1
R37 B	Khomus-2	69.98333	153.5833	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	54	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	inactive	R37B	Khomus-2
R38 A	Mt. Rodinka (Control)	68.7	161.55	10/T	-	-	-	-	-	-	-	-	-	-	-	-	-	115	129	148	137	151	133	122	145	149	130	124	132	134	135	136	-	-	-	-	-	-	R38A	Mt. Rodinka (Control)
R38 B	Mt. Rodinka (Burn)	68.71667	161.5333	10/T	-	-	-	-	-	-	-	-	-	-	-	-	-	148	155	167	156	-	-	-	154	157	139	147	150	152	154	-	-	-	-	-	-	-	R38B	Mt. Rodinka (Burn)
R38 C	Mt. Rodinka (Station)	68.74	161.3928	10/T	-	-	-	-	-	-	-	-	-	-	-	-	-	72	77	80	81	84	79	78	82	79	72	66	75	75	72	75	74	68	71	51	53		R38C	Mt. Rodinka (Station)
Chukotka
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
R9	Cape Rogozhny; Chukotka	64.78333	176.9667	100/T	-	-	-	-	43	42	49	50	38	39	42	44	46	50	57	57	53	59	52	52	52	51	53	52	59	55	60	55	51	60	55	49	52	53	R9	Cape Rogozhny; Chukotka
R10	Upper Kargoplgyno River; Chukotka	64.08333	177.0667	100	-	-	59	51	56	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	inactive	R10	Upper Kargoplgyno River; Chukotka
R11	Mt. Dionisy, Chukotka	64.56667	177.2	100/T	-	-	-	-	-	-	50	47	45	53	46	47	52	55	64	62	-	67	61	60	53	57	54	57	60	58	64	60	65	61	60	51	57	57	R11	Mt. Dionisy, Chukotka
R27	Lavrentia	65.6	-171.05	100	-	-	-	-	-	-	-	-	-	-	59	60	62	64	65	67	59	74	61	64	74	65	67	69	70	72	67	67	78	78	76	75	72	-	R27	Lavrentia
R41	Lorino	65.539667	-171.63023	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	47	47	47	51	56	55	56	55	59	66	58	62	60		R41	Lorino
R45	Kruglaya (Anadyr)	64.63333	176.9667	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	42	44	44	47	49	44	49	49	46	50	50	45	46	46	R45	Kruglaya (Anadyr)
Kamchatka
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
R30 A	Ploskii Tolbachik (Kamchatka)	55.7507	160.2896	100	-	-	-	-	-	-	-	-	-	-	-	-	-	78	67	71	73	72	73	80	76	72	76	-[29]	-	-	-	-	-	-	-	-	inactive	inactive	R30A	Ploskii Tolbachik (Kamchatka)
R30 B	Ploskii Tolbachik (Kamchatka) 1	55.76524	160.3206	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	49	56	54	53	56	63	58	59	57	-	-	-	-	-	-	-	-	-	inactive	inactive	R30B	Ploskii Tolbachik (Kamchatka) 1
R30 C	Ploskii Tolbachik (Kamchatka) 2	55.89092	160.5375	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	44	45	49	49	50	50	48	46	-	47	53	51	49	47	49	49	52	51	R30C	Ploskii Tolbachik (Kamchatka) 2
Nordic Countries
Denmark (Greenland)
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
G1	Zackenberg; ZEROCALM 1	74.473	-20.5528	100/T	-	-	-	-	-	-	60	62	66	50	64	63	71	73	76	79	76	75	79	79	78	82	82	75	74	74	85	83	58	86	86	89	86	83	G1	Zackenberg; ZEROCALM 1
G2	Zackenberg; ZEROCALM 2	74.466	-20.5643	150/T	-	-	-	-	-	-	61	57	60	44	60	60	60	63	65	69	68	67	68	73	70	75	72	70	67	55	71	71	45	75	75	74	77	74	G2	Zackenberg; ZEROCALM 2
G3	Disko Island	69.25	-53.5	100/T	-	-	-	-	-	-	-	57	71	74	68	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	inactive	G3	Disko Island
Italy/Svalbard
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
IT1	Ecogrid, Svalbard	78.92	11.86	60/T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	150	156	153	163	162	163	-	-	-	-	IT1	Ecogrid, Svalbard
Norway/Svalbard
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
N1	Janssonhaugen, Svalbard	78.1793	16.467	T/B102	-	-	-	-	-	-	-	-	152	161	157	159	172	170	174	166	182	177	168	176	184	185	177	180	181	191	197	185	187	189	188	159	180	204	N1	Janssonhaugen, Svalbard
N2	Juvvasshøe, Norway	61.6775823	8.3693057	T/B129	-	-	-	-	-	-	-	-	-	215	198	198	241	241	221	224	242	215	220	231	217	232	-	212	243	216	235	211	244	242	243	246	239	244	N2	Juvvasshøe, Norway
N3	UNISCALM	78.200956	15.836412	100/T	-	-	-	-	-	-	-	-	-	-	95	99	96	93	90	74	100	105	110	100	101	101	101	103	103	105	106	104	103	102	101	98	102	107	N3	UNISCALM
N5	Snøheim DB2, Norway	62.2958	9.352	T/B9	-	-	-	-	-	-	-	-	-	-	-	-	488	486	489	488	494	-	521	-	-	-	-	-	540	520	540	542	546	547	552	659	669	703	N5	Snøheim DB2, Norway
Poland/Svalbard
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
P1	Calypsos Tranda, Svalbard	77.56667	14.5	P	135	141	140	147	-	144	134	-	137	-	134	131	135	-	-	178	195	197	185	188	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	P1	Calypsos Tranda, Svalbard
P2 A	Kaffioyra Plain, Spitsbergen	78.68333	11.83333	P	-	-	-	-	-	-	-	-	-	120	117	122	128	106	112	118	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	P2A	Kaffioyra Plain, Spitsbergen
P2 B	Kaffioyra Plain, Spitsbergen	78.68333	11.83333	P	-	-	-	-	-	-	-	-	-	165	156	158	168	140	108	132	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	P2B	Kaffioyra Plain, Spitsbergen
P2 C	Kaffioyra Plain, Spitsbergen	78.68333	11.83333	P	-	-	-	-	-	-	-	-	-	200	210	219	170	230	191	220	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	P2C	Kaffioyra Plain, Spitsbergen
Sweden/Svalbard
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
S1	Kapp Linne, Svalbard	78.05	13.61667	100/T/B7	74	89	91	113	99	97	101	97	109	99	104	95	96	-	93	-	-	-	89	89	89	91	-	-	-	-	-	-	-	-	inactive	-	-	-	S1	Kapp Linne, Svalbard
S2	Abisko area, Sweden	68.33333	18.83333	100/T	61	57	56	54	55	51	58	65	72	62	73	75	81	77	75	67	72	73	71	69	69	69	67	74	84	88	91	95	95	94	97	98	94	97	S2	Abisko area, Sweden
Switzerland
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
CH3	Lapires	46.106117	7.284349	T/B19	-	-	-	-	-	-	-	-	-	370	380	390	-	440	450	460	-	460	-	510	540	556	557	560	568	560	558	560	639	653	660	643	666	667	CH3	Lapires
CH1	Corvatsch	46.42879	9.821836	T/B62	327	337	340	345	329	344	338	344	346	343	345	347	344	351	350	349	350	351	351	353	353	375	406	418	422	437	443	444	449	669	838[30]	841	-	-	CH1	Corvatsch
CH4	Stockhorn	45.986786	7.824201	T/B100	-	-	-	-	-	-	-	-	-	-	-	322	288	428	371	-	319	324	327	-	329	402	367	344	327	383	390	392	475	482	494	442	518	528	CH4	Stockhorn
CH5	Les Attelas	46.096772	7.273075	T/B26	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	393	383	389	394	391	393	397	398	398	400	425	459	427	473	490	CH5	Les Attelas
CH6	Tsaté	46.109047	7.548442	T/B20	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	645	655	691	682	704	767	765	728	787	-	-	-	-	-	-	-	-[31]	CH6	Tsaté
CH7	Gentianes	46.083705	7.302472	T/B20	-	-	-	-	-	-	-	-	-	-	-	-	-	145	142	148	138	146	-	214	201	278	330	397	441	445	453	427	496	523	512	589[32]	-	-	CH7	Gentianes
CH2	Schilthorn	46.558282	7.834426	T/B101	-	-	-	-	-	-	-	-	-	442	441	488	446	855	478	480	480	455	497	699	674	672	681	742	482	986	672	925	1043	1053	1106	1215	1304	>1300[33]	CH2	Schilthorn
CH8	Flüela	46.748868	9.943555	T/B23	-	-	-	-	-	-	-	-	-	-	-	-	-	296	290	293	295	298	298	295	294	297	295	295	300	-	293	289	290	281	285	284	294	-	CH8	Flüela
CH9	Muot da Barba Peider	46.496573	9.93141	T/B18	-	-	-	-	-	-	-	170	191	193	190	192	186	247	224	196	198	197	205	202	203	281	281	298	286	359	320	370	398	<460[34]	<460	<460	<460	<460	CH9	Muot da Barba Peider
CH10	Matterhorn	45.982321	7.676049	T/B53	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	319	332	289	368	298	359	336	342	273	-	458	373	-	506	451	297	533	-	CH10	Matterhorn
CH11	Schafberg	46.498797	9.925215	T/B60	-	-	-	-	-	-	-	317	318	317	498	504	487	510	504	497	488	503	502	511	510	515	513	513	513	517	515	-	510	512	515	512	515	-	CH11	Schafberg
CH12	Ritigraben	46.174694	7.849835	T/B30	-	-	-	-	-	-	-	-	-	-	-	-	385	396	397	394	381	355	377	370	342	343	347	-	317	374	367	372	387	399	475	399	400	>400[35]	CH12	Ritigraben
Asia
Mongolia
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
M 1	Baganuur Depression	47.68889	108.26250	T/B15	-	-	-	-	-	-	345	350	355	345	350	340	355	-	375	365	380	380	370	350	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M1A	Baganuur Depression
M1 A	Baganuur depression	47.69444	108.29444	T/B15	-	-	-	-	-	-	390	390	-	430	485	400	450	600	770	710	820	820	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M1B	Baganuur depression
M2 A	Nalaikh – northern slope	47.75444	107.25000	T/T/B50	-	-	-	-	-	-	335	340	350	340	345	335	345	335	335	340	335	340	340	345	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M2A	Nalaikh – northern slope
M2 B	Nalaikh – pingo top	47.77639	107.30000	T/B7	-	-	-	-	-	-	-	-	135	130	135	135	140	-	135	140	-	135	130	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M2B	Nalaikh – pingo top
M2 C	Nalaikh south-western slope	47.77278	107.29167	T/B15	-	-	-	-	-	-	-	-	-	-	330	335	350	355	350	365	400	430	435	435	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M2C	Nalaikh south-western slope
M2 D	Nalaikh thermokarst	47.77639	107.33833	T/B3	-	-	-	-	-	-	-	-	-	-	-	-	-	120	-	125	115	130	130	135	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M2D	Nalaikh thermokarst
M2 E	Nalaikh – south western slope	47.77083	107.28750	T/B10	-	-	-	-	-	-	-	-	-	370	400	-	-	-	430	420	460	470	520	480	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M2E	Nalaikh – south western slope
M2 F	Nalaikh depression plain	47.75278	107.33667	T/B10	-	-	-	-	-	-	-	-	-	-	-	-	-	-	530	510	530	585	590	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M2F	Nalaikh depression plain
M3	Argalant – valley bottom	47.92361	106.54722	T/B9	-	-	-	-	-	-	-	610	620	600	610	660	720	760	770	750	760	770	800	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M3	Argalant – valley bottom
M4 A	Burenkhan – northern slope	49.78833	100.03417	TT/B5	-	-	-	-	-	-	370	340	-	-	380	390	420	440	430	410	390	430	430	390	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M4A	Burenkhan – northern slope
M4 B	Burenkhan – valley bottom	49.70417	100.16750	TT/B6	-	-	-	-	-	-	-	-	-	-	325	340	345	348	352	342	350	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M4B	Burenkhan – valley bottom
M4 C	Burenkhan north eastern slope	49.78472	100.03167	T/B40	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	950	1200	1350	1250	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M4C	Burenkhan north eastern slope
M4 D	Burenkhan north-facing steep slope	49.78278	100.04667	T/B20	-	-	-	-	-	-	-		-	-	-	-	-	-	-	-	-	410	400	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M4D	Burenkhan north-facing steep slope
M5	Ardag Mountain	50.62639	100.16583	T/B15	-	-	-	-	-	-	-	-	-	300	335	430	360	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M5A	Ardag Mountain
M5 A	Ardag watershed	50.65917	100.16333	T/B75	-	-	-	-	-	-	-	-	-	310	-	-	-	-	400	-	-	400	410	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M5B	Ardag watershed
M5 B	Ardag watershed 2	50.65639	100.16250	T/B75	-	-	-	-	-	-	-	-	-	300	280	-	295		270	-	-	315	325	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M5C	Ardag watershed 2
M5 C	Ardag watershed 3	50.67667	100.16639	T/B150	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	480	250	440	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M5D	Ardag watershed 3
M5D	Ardag watershed 5	50.67667	100.16639	T/B200	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	185	-	305	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M5E	Ardag watershed 5
M6 A	Terkh – valley bottom	48.08194	99.37333	T/B15	-	-	-	-	-	-	-	-	-	205	210	207	210	205	215	230	235	235	230	220	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M6	Terkh – valley bottom
M7 A	Chuluut – pingo top	48.04111	100.39167	T/B15	-	-	-	-	-	-	-	-	-	136	140	137	142	-	-	140	160	175	180	180	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M7A	Chuluut – pingo top
M7 B	Chuluut – valley bottom	48.63611	100.37556	T/B15	-	-	-	-	-	-	-	-	-	-	-	-	285	260	290	275	270	285	290	280	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M7B	Chuluut – valley bottom
M8	Sharga – valley bottom	49.49027	98.65639	T/B10	-	-	-	-	-	-	-	-	-	-	-	-	285	280	275	275	285	280	290	280	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M8	Sharga – valley bottom
M9	Gurban turuu	47.03889	107.68611	TT/B3	-	-	-	-	-	-	-	-	-	-	-	295	301	305	295	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M9	Gurban turuu
M10	Tsengel Mountain	48.66944	89.11139	T/B1.3	-	-	-	-	-	-	-	-	-	-	-	-	109	105	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M10A	Tsengel Mountain
M10 A	Tsengel N slope	48.75250	89.13556	T/B3	-	-	-	-	-	-	-	-	-	-	-	-	-	275	280	285	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M10B	Tsengel N slope
M10 B	Tsengel valley bottom	48.77833	89.14056	T/B6	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	550	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M10C	Tsengel valley bottom
M11	Hatgal – lake terrace	50.43861	100.15028	T/B6	-	-	-	-	-	-	-	-	-	-	-	-	485	475	470	475	480	485	470	475	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M11A	Hatgal – lake terrace
M11 A	Hatgal house falt terrace	50.43861	100.15222	T/B6	-	-	-	-	-	-	-	-	-	-	-	-	450	-	490	470	435	440	435	485	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M11B	Hatgal house falt terrace
M11 B	Hatgal house	50.43333	100.16056	T/B10	-	-	-	-	-	-	-	-	-	-	-	370	375	382	390	382	400	406	400	410	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M11C	Hatgal house
M12	Dalbay	51.02000	100.75833	T/B10	-	-	-	-	-	-	-	-	-	-	-	-	-	134	133	138	140	145	139	135	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M12A	Dalbay
M12 A	Borsog Flood plain	50.97028	100.72722	T/B6	-	-	-	-	-	-	-	-	-	-	-	-	-	185	-	-	182	186	192	186	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M12B	Borsog Flood plain
M12 B	Borsog W slope	50.97444	100.72861	T/B6	-	-	-	-	-	-	-	-	-	-	-	-	-	-	240	255	220	275	250	295	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M12C	Borsog W slope
M12 C	Shagnuul	50.25444	100.84472	T/B10	-	-	-	-	-	-	-	-	-	-	-	-	-	425	425	385	360	-	360	355	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M12D	Shagnuul
M12 D	Turag	51.28583	100.82722	T/B10	-	-	-	-	-	-	-	-	-	-	-	-	-	475	470	475	470	475	488	472	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M12E	Turag
M12 E	Noyon	51.20972	100.77028	T/B10	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	380	355	376	381	372	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M12F	Noyon
M12 F	Dalbay	50.04444	100.73278	TT	-	-	-	-	-	-	-	-	-	-	-	-	230	-	225	-	-	-	-	210	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M12G	Dalbay
M12 G	Dalbay pingo	50.04417	100.75444	TT	-	-	-	-	-	-	-	-	-	-	-	-	-	82	-	-	96	-	137	134	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M12H	Dalbay pingo
M12 H	Dalbay gully	51.03111	100.72250	TT	-	-	-	-	-	-	-	-	-	-	-	-	-	130	-	-	-	145	143	133	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M12I	Dalbay gully
M13	Darhad Tsagaan nuur	51.35556	99.35917	T/B15	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	146	150	-	1.45	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M13A	Darhad Tsagaan nuur
M13 A	Darhad Khuurch	51.18722	99.49750	T/B100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	150	148	158	160	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M13B	Darhad Khuurch
M13 B	Darhad Rinchin	51.11472	99.63694	T/B6	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	330	-	345	340	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M13C	Darhad Rinchin
M13 C	Darhad Sharga	51.35861	99.47972	T/B6	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	175	180	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M13D	Darhad Sharga
M14	Terelj open slope	47.98028	100.42528	T/B10	-	-	-	-	-	-	-	-	-	-	-	-	-	440	425	440	368	374	421	432	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M14A	Terelj open slope
M14 A	Terelj forested slope	47.97944	100.42556	T/B6	-	-	-	-	-	-	-	-	-	-	-	-	-	300	325	285	235	245	257	240	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M14B	Terelj forested slope
M15	Borhujir	48.27528	106.19472	T/B10	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	235	220	220	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M15	Borhujir
M16	Mongot pingo top	49.34722	99.24222	T/B33	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	115	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M16A	Mongot pingo top
M16A	Khurimt tal	49.29694	98.19000	TT	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	275	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	M16B	Khurimt tal
China
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
CN1	Yutulihe; Northeast China	50.93333	121.3333	T	-	96	100	109	112	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	CN1	Yutulihe; Northeast China
CN2	Fenghuo Shan	34.33333	97.86667	T/B35	-	-	-	-	-	-	-	-	135	137	139	142	143	145	149	154	177	196	182	187	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	CN2	Fenghuo Shan
CN3	Ecology Station	34.73333	92.88333	T	-	-	-	-	-	-	-	-	260	263	263	>263	>263	>265	>260	>265	279	274	273	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	CN3	Ecology Station
CN4	Wuli	35.43333	93.6	T	-	-	-	-	-	-	-	-	-	-	>260	>260	>260	>260	>260	>260	337	319	292	317	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	CN4	Wuli
CN5	Lower Two Rivers	34.46667	92.73333	T/B40	-	-	-	-	-	-	-	-	-	-	87	89	89	107	-	>120	122	110	100	119	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	CN5	Lower Two Rivers
CN6	Upper Two Rivers	31.81667	91.73333	T/B18	-	-	-	-	-	-	-	-	-	-	>235	>235	>235	>235	>235	>235	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	CN6	Upper Two Rivers
CN7	Kunlun Basin	35.61667	94.06667	T	-	-	-	-	-	-	-	-	-	-	-	-	-	136	136	139	142	138	137	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	CN7	Kunlun Basin
CN8	Glacier Station	43.21667	87.11667	T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	CN8	Glacier Station
CN9	Da Xi Gou (Glacier Station)	43.11667	86.85	T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	CN9	Da Xi Gou (Glacier Station)
CN10	Deep Borehole	43.11667	86.85	T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	CN10	Deep Borehole
CN11	Shallow Borehole	43.1	86.81667	T	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	inactive	CN11	Shallow Borehole
Kazakstan
Site Code	Site Name	Location		Method	SITE AVERAGES OF THE  ANNUAL END-OF-SEASON THAW DEPTH (cm)																																		Site Code	Site Name
		LAT	LONG		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
K0	Northern Tien Shan; Cosmostation	43.1	76.9	T/B25	480	510	510	470	490	480	470	480	480	490	490	500	490	492	496	500	495	505	513	638[36]	688	569	-	-	-	-	-	-	-	-	-	-	-	inactive	K0	Northern Tien Shan; Cosmostation
K1	Northern Tien Shan; Cosmostation	43.1	76.9	T/B14	450	490	460	420	500	510	490	500	500	520	510	465	470	475	-	-	-	495	500	495	486	457	-	-	-	-	-	-	-	-	-	-	-	inactive	K1	Northern Tien Shan; Cosmostation
K2	Northern Tien Shan; Cosmostation	43.08333	76.91667	T/B14	-	-	-	-	-	-	-	-	410	420	460	470	480	470	480	470	485	455	450	347	381	300	-	-	-	-	-	-	-	-	-	-	-	inactive	K2	Northern Tien Shan; Cosmostation

---

[1]

Dmitry Streletskiy:
limited sample (n=20 instead of 320)

[2]

Dmitry Streletskiy:
measurments end of July

[3]

Dmitry Streletskiy:
measurements end of July

[4]

Dmitry Streletskiy:
measurements end of July

[5]

Dmitry Streletskiy:
measurements end of July

[6]

Dima:
Site was burned. See metadata for details

[7]

Dima: All measurements are taken in mid-July

[8]

Dima: All measurements are taken in mid-July

[9]

Dima: All measurements are taken in mid-July

[10]

Dima: All measurements are taken in mid-July

[11]

Dima:
permafrost table was not reached at any of 121 grid-nodes by using mechanical probe of 135 cm.

[12]

Dmitry Streletskiy:
smaller sampling size

[13]

Dmitry Streletskiy:
smaller sampling size

[14]

Dima:
Early measurement

[15]

Dima:
measurment was made on August1 (about 25 days earlier than ussual)

[16]

Dmitry Streletskiy:
early measurement

[17]

Dima:
measurment was made on August1 (about 25 days earlier than ussual)

[18]

Dima:
Early measurement

[19]

Dima:
Early measurement

[20]

Dima:
Early measurement

[21]

Dima:
Early measurement
 

[22]

Dima:
Early measurement

[23]

Dima:
Early measurement

[24]

Dima:
Early measurement

[25]

Dmitry Streletskiy:
R29a was disturbed. Site R29C was organized at similar landscape conditions nerby

[26]

Dima:
One month early

[27]

Dima:
One month early

[28]

Dmitry Streletskiy:
site was flooded

[29]

Dima:
30a and 30b were covered by lava after Nov 2012 eruption. See metadata

[30]

Dmitry Streletskiy:
Data not reliable for 2020, 2021, no ALT after these years, new borehole drilled 2015

[31]

Dmitry Streletskiy:
No update, borehole out of service

[32]

Dmitry Streletskiy:
No update, thermistors broken, new borehole drilled in 2022

[33]

Dmitry Streletskiy:
ALT is now deeper than lowest thermistor at 13 m, new borehole drilled in 2018

[34]

Dmitry Streletskiy:
Thermistors above 4.6 are broken. New borehole in 2019.

[35]

Dmitry Streletskiy:
Unreliabe thermistor at 5 m

[36]

Dima:
S.Marchenko:there was no freezup during the winter of 2008-2009. Residual thawed layer (talik) was formed