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MONTHLY TO ANNUAL
FIELD SURVEY
53
30 METERS TO 100 METERS
37
TRANSECT
32
biota
30
GRID
27
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA
25
environment
24
IN SITU/LABORATORY INSTRUMENTS > PROBES > PROBES
22
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT
18
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL MOISTURE PROBE
17
500 METERS TO 1 KILOMETER
13
EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > ACTIVE LAYER
12
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL TEMPERATURE PROBE
9
250 METERS TO 500 METERS
8
EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > SPECTROMETERS/RADIOMETERS > SPECTROMETERS > SPECTROMETERS
5
geoscientificInformation
5
EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > PHOTON/OPTICAL DETECTORS > CAMERAS > CAMERAS
4
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL TEMPERATURE
4
KITE
4
1 KILOMETER
2
EARTH REMOTE SENSING INSTRUMENTS > ACTIVE REMOTE SENSING > PROFILERS/SOUNDERS > LIDAR/LASER SOUNDERS > LIDAR > LIGHT DETECTION AND RANGING
2
EARTH SCIENCE > LAND SURFACE > SURFACE RADIATIVE PROPERTIES > REFLECTANCE
2
ENVIRONMENT
2
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL DEPTH PROBE
2
POINT
1
WEEKLY TO MONTHLY
1
elevation
1
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