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EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > PHOTON/OPTICAL DETECTORS > CAMERAS > CAMERAS
22
KITE
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA
20
GRID
18
ANNUAL
16
biota
13
30 METERS TO 100 METERS
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500 METERS TO 1 KILOMETER
6
MONTHLY TO ANNUAL
4
TRANSECT
4
POINT
3
100 METERS TO 250 METERS
2
DAILY TO WEEKLY
2
EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW MELT
2
environment
1
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