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30 METERS TO 100 METERS
FIELD SURVEY
TRANSECT
55
MONTHLY TO ANNUAL
49
biota
36
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA
35
IN SITU/LABORATORY INSTRUMENTS > PROBES > PROBES
29
ANNUAL
25
environment
23
GRID
21
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT
17
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL MOISTURE PROBE
15
EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > ACTIVE LAYER
14
EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > SPECTROMETERS/RADIOMETERS > SPECTROMETERS > SPECTROMETERS
12
EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > PHOTON/OPTICAL DETECTORS > CAMERAS > CAMERAS
7
geoscientificInformation
7
EARTH REMOTE SENSING INSTRUMENTS > ACTIVE REMOTE SENSING > PROFILERS/SOUNDERS > LIDAR/LASER SOUNDERS > LIDAR > LIGHT DETECTION AND RANGING
6
EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION COVER
6
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL TEMPERATURE PROBE
6
EARTH SCIENCE > LAND SURFACE > FROZEN GROUND > SOIL TEMPERATURE
2
250 METERS TO 500 METERS
1
500 METERS TO 1 KILOMETER
1
EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION SPECIES
1
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL TEMPERATURE
1
EARTH SCIENCE > LAND SURFACE > SURFACE RADIATIVE PROPERTIES > REFLECTANCE
1
ENVIRONMENT
1
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL DEPTH PROBE
1
UNKNOWN
1
WEEKLY TO MONTHLY
1
elevation
1
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