GENERAL ENVIROMENT AND CLIMATE OF THE EAT

Pavel Orekhov Marina Leybman

Earth Cryosphere Institute SB RAS

Rovaniemi 2012

Location of EAT ostrov Kheysa ostrov Belyy

Kharasavey Vaskiny Dachi

Nadym Laborovaya

Climate

-5.6 -7.0 -8.1

-9.7 -10.3 -9.6

-13.3 -14.0 -12.0 -10.0

-8.0 -6.0 -4.0 -2.0 0.0

average annual air temperature, °C

-3618.8 -3494.0 -3568.0

-4141.7 -4149.5 -4200.0 -4000.0 -3800.0 -3600.0 -3400.0 -3200.0 -3000.0

sum of temperature <0, °C

1215.3 1204.0

558.0 346.3

44.5 0.0

200.0 400.0 600.0 800.0

1000.0 1200.0 1400.0

sum of temperature >0, °C

38.0 37.8 29.0 30.9 29.3

23.6

0.0 5.0

10.0 15.0 20.0 25.0 30.0 35.0 40.0

average amplitude monthly mean temperature, °C

14.0 13.3

7.0 5.8 5.3 2.3

0.7 0.0 2.0 4.0 6.0 8.0

10.0 12.0 14.0 16.0

temperature of the warmest month, °C

-24.0 -24.5 -22.0 -25.1 -24.0

-20.4 -24.3 -30.0

-25.0 -20.0 -15.0 -10.0

-5.0 0.0

temperature of the coldest month, °C

488 411

320 298 258

321 304

0

100

200

300

400

500

600

sum annual precipitation, mm

231.0 226 234 250 267 280 286

0.0 50.0

100.0 150.0 200.0 250.0 300.0 350.0

duration of snow cover, days

Climate

3.7 4.2

6.6 6.3 7.1

7.8

5.3

0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0

average annual wind speed, m/s

Climate

74

80

87 87 88 86

78

65

70

75

80

85

90

relative humidity, %

Spatial patterns of air temperature distribution

average annual air temperature

amount of air temperatures for the period of thawing

amount of air temperatures for the period of freezing

average height of snow cover

Spatial patterns of snow cover distribution

number of days with snow cover

Geology

permafrost condition THICKNESS AND DISTRIBUTION OF PERMAFROST

Bely island

Kharasavey

Marre-Sale

Vaskiny Dachi

Laborovaya

1 >100 m; 2 >300 m; 3 >400 m; 4 >500 m.

Ground temperature

Interface between areas with continuous and discontinuous permafrost

Thickness of permafrot on the Hayes island is 170 m

Ground temperature measured in the borehole on Hayes island is -10,5

Active layer and cryogenic and other surface processes

Thank you for your attention!