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Diurnal Difference Vegetation Water Content (Ddvwc) of Advance Microwave Scanning Radiometer-earth Observing System (Amsr-e) for Assessment of Crop Water Stress at Regional Level : Volume Xl-8, Issue 1 (27/11/2014)

By Chakraborty, A.

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Book Id: WPLBN0004016197
Format Type: PDF Article :
File Size: Pages 6
Reproduction Date: 2015

Title: Diurnal Difference Vegetation Water Content (Ddvwc) of Advance Microwave Scanning Radiometer-earth Observing System (Amsr-e) for Assessment of Crop Water Stress at Regional Level : Volume Xl-8, Issue 1 (27/11/2014)  
Author: Chakraborty, A.
Volume: Vol. XL-8, Issue 1
Language: English
Subject: Science, Isprs, International
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus Publications
Historic
Publication Date:
2014
Publisher: Copernicus Publications, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

R. Sesha Sa, M. V., & Chakraborty, A. (2014). Diurnal Difference Vegetation Water Content (Ddvwc) of Advance Microwave Scanning Radiometer-earth Observing System (Amsr-e) for Assessment of Crop Water Stress at Regional Level : Volume Xl-8, Issue 1 (27/11/2014). Retrieved from http://www.ebooklibrary.org/


Description
Description: Agricultural Sciences & Applications Group, RS & GIS – Applications Area National Remote Sensing Centre, Indian Space Research Organization, Hyderabad, India. Advance Microwave Scanning Radiometer – Earth Observing System (AMSR-E) derived Vegetation Water Content (VWC) at predawn (01:30 LST, descending pass) and afternoon (13:30 LST; ascending pass) were used to assess crop water stress condition over the selected meteorological subdivisions of India. The temporal profile of Normalized Difference Vegetation Index (NDVI) was used to study the progression of crop growth. The Diurnal Difference Vegetation Water Content (ddVWC) was found to be sensitive to rainfall patterns (wet/dry spell) particularly in moderate to full crop cover condition (NDVI > 0.4). The ddVWC was found to be significantly (p = 0.05) correlated with the rainfall over the rainfed regions. The ddVWC was further characterized to represent different categories of crop water stress considering irrigated flooded rice crop as a benchmark. Inter year comparative analysis of temporal variations of the ddVWC revealed its capability to differentiate normal (2005) and sub-normal years (2008 and 2009) in term of intensity and persistence of crop water stress. Spatio-temporal patterns of ddVWC could capture regional progression of crop water stress at high temporal resolution in near real time.

Summary
Diurnal Difference Vegetation Water Content (ddVWC) of Advance Microwave Scanning Radiometer-Earth Observing System (AMSR-E) for assessment of crop water stress at regional level

 

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