Topic
Ice and Permafrost
68
Snow
68
Physical and Dynamic Oceanography
65
ARCTIC OCEAN
61
Meteorology
43
SEA ICE
40
OCEAN BASINS
35
ARCTIC REGIONS
31
ICE
28
POLAR REGIONS
26
USSR
26
*ARCTIC OCEAN
25
*SEA ICE
24
*ARCTIC REGIONS
21
ICE ISLANDS
20
SEA WATER
20
DISTRIBUTION
19
SALINITY
19
GREENLAND SEA
18
OCEANOGRAPHIC DATA
18
THICKNESS
18
MELTING
17
ARCTIC OCEAN)
16
CLIMATE
16
TEMPERATURE
16
OCEAN CURRENTS
14
TRANSLATIONS
14
(*SEA ICE
13
ATMOSPHERIC TEMPERATURE
13
ARCTIC REGIONS)
12
FREEZING
12
ICE FORMATION
12
PACK ICE
12
SURFACE TEMPERATURE
12
*OCEANOGRAPHIC DATA
11
MEASUREMENT
11
SEASONAL VARIATIONS
11
(*ARCTIC OCEAN
10
ALASKA
10
CANADA
10
HEAT FLUX
10
MARINE METEOROLOGY
10
MODELS
10
SEA ICE)
10
SEA LEVEL
10
STRAITS
10
VELOCITY
10
WEATHER FORECASTING
10
(*AERIAL RECONNAISSANCE
9
*METEOROLOGICAL DATA
9
more ...