Russia, Western Siberia, center

1.

Russia, Western Siberia, center
Dmitriy S. Drozdov, Earth Cryosphere Institute,
Tyumen Scientific Centre SB RAS (Tyumen),
[email protected],
+7-916-241-67-55
Olga E. Ponomareva, Russian State University for
Geological Prospecting – MGRI (Moscow),
[email protected] ,
+7-916-450-72-10
Andrey G. Gravis, Earth Cryosphere Institute,
Tyumen Scientific Centre SB RAS (Tyumen),
[email protected],
+7-916-875-92-80
Anatoliy A. Gubarkov, Earth Cryosphere Institute,
Tyumen Scientific Centre SB RAS(Tyumen),
[email protected],
+7-919-928-57-73
1 – Nadym R1
2 – Urengoy-south R-50A
3 – Urengoy-north R-50B
4 – Numto
5 – Tarko-Sale

2. Permafrost Temperature

Russia, Western Siberia, center
Permafrost Temperature
-0,5
-1
1
b/h 11-75 Frost Mount
b/h 14-72 Flat Peatland
-1,5
-2
1970
b/h 1-71 Palsa Peatland
b/h 23 - Moss Bog
1980
1990
2000
2010
2020
Ground temperature, °C
0
-0,5
b/h 1n - Peat Bed
b/h 2n - Mineral Frost Mount
b/h 3n - Peat Frost Mount
-1
b/h 1ts - Flat-Palsa Peatland
b/h 2ts - Peat Bed
-1,5
5
4
-2
2005
2010
2015
2020
2025
b/h 15-03 Hummocky Tundra with Peat
0
-2
b/h 05-01 Open Larch Forest
b/h 05-02 Flat Peatland
b/h 05-03 Palsa Peatland
b/h 05-04 Shrub in the valley
b/h 05-06 Tundra on the Slope
b/h 05-07 Frost Mount
b/h 05-09a Grass-Moss Bog
-4
2
-6
1970
1980
1990
2000
2010
2020
Ground temperature, °C
0
Ground temperature, °C
Number of b/h: 1(R1) – 16 b/h; 2(R50A) – 7; 3(R50B) – 7; 4 – 2; 5 – 3 b/h
Countries of borehole locations: Russia
Longest observing period: 1 – 46; 2 – 47; 3 – 48; 4 – 3; 5 & 6 – 15 years
Measurements during 2020 and 2021: Yes
“Trends“ in data from 2016-2021?: 1 (R1 - Nadym) - northern taiga, there is no trend.
2 (R50A - Urengoy-south) - southern forest tundra, the insignificant positive trend.
3 (R50B - Urengoy-north) - southern tundra, the significant positive trend.
4 (Numto) – northern taiga, the significant positive trend.
5 (Tarko-Sale)– south boundary of the northern taiga, significant negative trend.
Ground temperature, оС
-1
b/h 15-04 Tundra with Peat and Heaving
b/y 15-05 Easy Slope, Tundra
b/h 15-06 Bushesn on the Slope
b/h 15-08 Flat Tundra
-3
b/h 15-16 Wet Flat Peatland & Tundra
-5
-7
1970
3
1980
1990
2000
2010
2020

3. Active Layer Thickness

Russia, Western Siberia, center
Active Layer Thickness
CALM sites:
• Number of ALT sites: 6
1 – Nadym R1A, R1B
• Countries of ALT site locations: Russia
2 – Urengoy-south R50A
• Longest observing period: R1A - 24; R1B - 8; R50A - 14; R50B - 14;
Numto - 2; Tarko-Sale – 4; Noyabrsk – 3 years
3 – Urengoy-north R50B
• Measurements during 2020 and 2021?: 1,2,5,6 – Yes; 3,4 – only 2021;
4 – Numto
5 – Tarko-Sale
• “Trends“ in data from 2016-2021?:
6 – Noyabrsk
• 1 (R1 - Nadym) - northern taiga, the insignificant positive trend.
• 2 (R50A - Urengoy-south) - southern forest tundra, the insignificant negative trend. R1A & R50A: the number of
• 3 (R50B - Urengoy-north) - southern tundra, the significant positive trend.
point where thawing did not
exceed 200 cm
• 4, 5, 6 - taiga, there is no trend.
100
3
Active Layer Tickness, cm
1
Active Layer Tickness, cm
Active Layer Tickness, cm
120
80
60
40
20
0
2005
2
ALT R50A
ALT R50B
2010
2015
2020
2025
6
4
5