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Large Area Crop Inventory Experiment (LACIE). Detecting and monitoring agricultural vegetative water stress over large areas using LANDSAT digital dataThe author has identified the following significant results. The Green Number Index technique which uses LANDSAT digital data from 5X6 nautical mile sampling frames was expanded to evaluate its usefulness in detecting and monitoring vegetative water stress over the Great Plains. At known growth stages for wheat, segments were classified as drought or non drought. Good agreement was found between the 18 day remotely sensed data and a weekly ground-based crop moisture index. Operational monitoring of the 1977 U.S.S.R. and Australian wheat crops indicated drought conditions. Drought isoline maps produced by the Green Number Index technique were in good agreement with conventional sources.
Document ID
19790005299
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Thompson, D. R. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Wehmanen, O. A. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Date Acquired
September 3, 2013
Publication Date
April 1, 1978
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
JSC-13737
E79-10063
LACIE-00506
NASA-TM-79928
Accession Number
79N13470
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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