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United States Department of Agriculture

Agricultural Research Service

Research Project: Passive/active Data Fusion for SMAP Enabled Applications

Location: Southwest Watershed Research

2012 Annual Report

1a. Objectives (from AD-416):
Science direction for SMAP mission. Specifically the investigation of applicability of the SMAP mission to watershed and ecosysytem management decisions in the southwest.

1b. Approach (from AD-416):
Using existing and developing data assimilation and data fusion techniques to combine SMAP provided data and products with existing knowledge of the watershed environment in a modeling framework to produce information and tools which will be of value to researchers and policymakers.

3. Progress Report:
New satellite sensors are planned to measure plant fluorescence (F) to monitor plant health on a regular basis over large agricultural regions. In a greenhouse study, we found that F was directly related to plant photosynthesis and could be used to track the status, resilience, and recovery of photochemical processes. Therefore, satellite-based measurements of F may provide a rapid assessment of plant stress to guide farmers in resource applications. A field study of nitrogen-stressed wheat conducted in 2011 and 2012 will provide data to validate and extend these findings. This project contributes to objective 1 of the in-house project.

4. Accomplishments

Last Modified: 06/24/2017
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