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FIELD SURVEY
52
30 METERS TO 100 METERS
45
biota
45
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA
42
MONTHLY TO ANNUAL
40
GRID
37
TRANSECT
31
ANNUAL
23
EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > PHOTON/OPTICAL DETECTORS > CAMERAS > CAMERAS
20
IN SITU/LABORATORY INSTRUMENTS > PROBES > PROBES
18
500 METERS TO 1 KILOMETER
16
environment
16
KITE
13
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT
11
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL MOISTURE PROBE
11
EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > SPECTROMETERS/RADIOMETERS > SPECTROMETERS > SPECTROMETERS
8
EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > ACTIVE LAYER
8
250 METERS TO 500 METERS
6
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL TEMPERATURE PROBE
6
EARTH REMOTE SENSING INSTRUMENTS > ACTIVE REMOTE SENSING > PROFILERS/SOUNDERS > LIDAR/LASER SOUNDERS > LIDAR > LIGHT DETECTION AND RANGING
4
EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION COVER
4
WEEKLY TO MONTHLY
4
geoscientificInformation
4
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL TEMPERATURE
2
1 KILOMETER
1
EARTH SCIENCE > LAND SURFACE > SURFACE RADIATIVE PROPERTIES > REFLECTANCE
1
ENVIRONMENT
1
UNKNOWN
1
elevation
1
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