Topic
EARTH SCIENCE
132
GEOGRAPHIC REGION >
126
POLAR
126
OCEAN >
108
SOUTHERN OCEAN
101
oceans
100
SHIPS
96
AIR TEMPERATURE
90
ARCTIC
88
LATITUDE
87
LONGITUDE
87
TIME
87
SEA ICE CONCENTRATION
86
DATE
85
CLOUD
84
COMMENTS
84
FILM COUNTER
84
FRAME COUNTER FOR FILM
84
OPEN WATER
84
RECORD
84
SEA ICE FLOE SIZE
84
SEA ICE SNOW COVER
84
SEA ICE THICKNESS
84
SEA ICE TOPOGRAPHY
84
SEA ICE TYPE
84
SEA TEMPERATURE
84
SNOW THICKNESS
84
SNOW TYPE
84
TRACK
84
VIDEO RECORDER COUNTER
84
VISIBILITY CODE
84
WEATHER CODE
84
WIND DIRECTION
84
WIND VELOCITY
84
CONTINENT >
81
AMD
78
CEOS
78
CRYOSPHERE
73
SEA ICE
69
ARCTIC OCEAN
68
ANTARCTICA
67
PACK ICE
60
ICE FLOES
58
ICE TYPES
58
ASPECT >
56
Antarctic Sea Ice Processes and Climate
56
ICE DEPTH/THICKNESS
56
AMD/AU
48
biota
36
ACE/CRC
33
more ...