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Satellite-Based Drought Reporting on the Navajo Nation
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Author and Affiliation:
McCullum, Amber(Bay Area Environmental Research Inst., Moffett Field, CA, United States)
Schmidt, Cynthia(Bay Area Environmental Research Inst., Moffett Field, CA, United States)
Ly, Vickie(Washington Univ., Seattle, WA, United States)
Green, Rachel(Bay Area Environmental Research Inst., Moffett Field, CA, United States)
McClellan, Carlee(Dept. of Water Resouces., Navajo Nation, NM, United States)
Abstract: The Navajo Nation (NN) is the largest reservation in the US, and faces challenges related to water management during long-term and widespread drought episodes. The Navajo Nation is a federally recognized tribe, which has boundaries within Arizona, New Mexico, and Utah. The Navajo Nation has a land area of over 70,000 square kilometers. The Navajo Nation Department of Water Resources (NNDWR) reports on drought and climatic conditions through the use of regional Standardized Precipitation Index (SPI) values and a network of in-situ rainfall, streamflow, and climate data. However, these data sources lack the spatial detail and consistent measurements needed to provide a coherent understanding of the drought regime within the Nation's regional boundaries. This project, as part of NASA's Western Water Applications Office (WWAO), improves upon the recently developed Drought Severity Assessment Tool (DSAT) to ingest satellite-based precipitation data to generate SPI values for specific administrative boundaries within the reservation. The tool aims to: (1) generate SPI values and summary statistics for regions of interest on various timescales, (2) to visualize SPI values within a web-map application, and (3) produce maps and comparative statistical outputs in the format required for annual drought reporting. The co-development of the DSAT with NN partners is integral to increasing the sustained use of Earth Observations for water management applications. This tool will provide data to support the NN in allocation of drought contingency dollars to the regions most adversely impacted by declines in water availability.
Publication Date: Dec 11, 2017
Document ID:
20170012137
(Acquired Dec 19, 2017)
Subject Category: EARTH RESOURCES AND REMOTE SENSING
Report/Patent Number: ARC-E-DAA-TN48752
Document Type: Conference Paper
Meeting Information: American Geophysical Union (AGU) 2017 Fall Meeting ; 11-15 Dec. 2017; New Orleans, LA; United States
Meeting Sponsor: American Geophysical Union; Washington, DC, United States
Contract/Grant/Task Num: NNX12AD05A
Financial Sponsor: NASA Ames Research Center; Moffett Field, CA, United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Public use permitted
NASA Terms: CLIMATOLOGY; WATER MANAGEMENT; DROUGHT; CLIMATE; WATER RESOURCES; RAIN; REMOTE SENSING; WATER; STANDARDIZATION
Other Descriptors: SATELLITE-BASED; DROUGHT; NAVAJ
Availability Notes: Abstract Only
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Last Modified: December 19, 2017
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