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FIELD SURVEY
10
GRID
7
500 METERS TO 1 KILOMETER
6
IN SITU/LABORATORY INSTRUMENTS > PROBES > PROBES
5
MONTHLY TO ANNUAL
5
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA
4
EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > ACTIVE LAYER
4
WEEKLY TO MONTHLY
4
biota
3
geoscientificInformation
3
250 METERS TO 500 METERS
2
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL MOISTURE PROBE
2
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL TEMPERATURE PROBE
2
environment
2
1 KILOMETER
1
30 METERS TO 100 METERS
1
ANNUAL
1
Active Layer
1
Cryosphere
1
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT
1
ENVIRONMENT
1
Earth Science
1
Frozen Ground
1
GRIDS AND VECTORS
1
Grid
1
IN SITU/LABORATORY INSTRUMENTS
1
PROBES
1
TRANSECT
1
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