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FIELD SURVEY
30 METERS TO 100 METERS
84
biota
83
MONTHLY TO ANNUAL
76
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA
73
TRANSECT
63
GRID
58
IN SITU/LABORATORY INSTRUMENTS > PROBES > PROBES
40
environment
37
ANNUAL
36
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT
28
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL MOISTURE PROBE
25
EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > SPECTROMETERS/RADIOMETERS > SPECTROMETERS > SPECTROMETERS
23
500 METERS TO 1 KILOMETER
22
EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > ACTIVE LAYER
14
250 METERS TO 500 METERS
13
IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL TEMPERATURE PROBE
13
EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > PHOTON/OPTICAL DETECTORS > CAMERAS > CAMERAS
12
geoscientificInformation
11
WEEKLY TO MONTHLY
10
EARTH REMOTE SENSING INSTRUMENTS > ACTIVE REMOTE SENSING > PROFILERS/SOUNDERS > LIDAR/LASER SOUNDERS > LIDAR > LIGHT DETECTION AND RANGING
9
EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION COVER
8
POINT
7
DAILY TO WEEKLY
6
LESS THAN 1 METER
6
climatologyMeteorologyAtmosphere
6
UNKNOWN
5
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL TEMPERATURE
4
inlandWaters
4
1 METER TO 30 METERS
3
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