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EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA
40
30 METERS TO 100 METERS
36
FIELD SURVEY
35
GRID
30
MONTHLY TO ANNUAL
29
TRANSECT
21
ANNUAL
20
EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > PHOTON/OPTICAL DETECTORS > CAMERAS > CAMERAS
18
KITE
14
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL MOISTURE PROBE
11
500 METERS TO 1 KILOMETER
8
EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > SPECTROMETERS/RADIOMETERS > SPECTROMETERS > SPECTROMETERS
8
250 METERS TO 500 METERS
7
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT
6
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL TEMPERATURE PROBE
6
IN SITU/LABORATORY INSTRUMENTS > PROBES > PROBES
5
EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION COVER
4
EARTH REMOTE SENSING INSTRUMENTS > ACTIVE REMOTE SENSING > PROFILERS/SOUNDERS > LIDAR/LASER SOUNDERS > LIDAR > LIGHT DETECTION AND RANGING
3
1 KILOMETER
1
EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > ACTIVE LAYER
1
EARTH SCIENCE > LAND SURFACE > SURFACE RADIATIVE PROPERTIES > REFLECTANCE
1
ENVIRONMENT
1
UNKNOWN
1
WEEKLY TO MONTHLY
1
environment
1
geoscientificInformation
1
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