NASA Earth Science Applicationsscienceconf2016.deltacouncil.ca.gov/sites/default/files/...2016/11/16...
Transcript of NASA Earth Science Applicationsscienceconf2016.deltacouncil.ca.gov/sites/default/files/...2016/11/16...
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2005 2013
NASA Earth Science Applications
Partners:
Landsat image comparison of the change in coverage of late-summerfloating aquatic vegetation biomass between 2005 and 2013 near theDelta-Mendota Canal, showing the increase in Water Hyacinthcoverage in 30-meter resolution (as blue shaded) pixels
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Landsat Mapping of Water Hyacinth Peak Cover in 2011 (RED) and in 2015 (BLUE) on Central Delta Waterways
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Sacramento River Flow
Rates (CMS) at Freeport
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Mean Monthly Sacramento River Flow Rates (CMS) at Freeport
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River Flow Rates Control Floating Aquatic Vegetation Peak Coverage in Delta Waterways
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Logistic Growth Curve
Temperature and N limited Growth
Julian Day
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NASA Airborne Mapping of Water Hyacinth (blue) and Water Primose (red) on the Delta Waterways – Results from June 2013 Flights
Sherman Lake and Big Break Franks Tract
Rhode Island Latham Slough Middle River
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Delta Pesticide and Nutrient Loading Estimations Using Soil and Water Assessment Tool (SWAT)
for the Sacramento and San Joaquin Rivers Watersheds
Minghua Zhang, Mohammad Abdolahi, Huajin ChenDept. of Land, Air and Water Resources, UC Davis
Christopher Potter and David BubenheimNASA Ames Research Center
USDA-ARS Area-Wide Pest Management Project
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USDA SWAT Model -- HRU Delineation for the Sacramento-San Joaquin Delta
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USDA SWAT Model -- Soil Water Nitrate Levels for Delta Island Tracts
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SWAT for the Sacramento and San Joaquin River Watersheds
• Total area: 15,000 km2
• Outlet : San Joaquin River at Vernalis• Total area: 23,300 km2
• Outlet : Sacramento River at Freeport
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The implementation of the flood weir modification allowed for much-improved model simulations. With the addition of the flood stage discharges, the uncalibrated monthly NS coefficient for streamflow
improved from -1.2 to 0.7, for a better representation of the managed hydrologic flows in the watershed.
Sacramento River Monthly Stream Flow SWAT Validation: Before and after flood weir modification
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San Joaquin River Monthly Stream Flow SWAT Validation
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SWAT calibration and validation status for selected pesticides
Chemical Calibration period Validation period Explanation
1 Diuron 1997-1998 (2 years) 2012-2013 (2 years)
2 Carbaryl - - Insufficient observed data
3 Permethrin - - Insufficient observed data
4 Hexazine 2008-2011 2012-2013 Separate calibration
5 Metolachlor 1997-2006 2007-2013
6 Thiobencrab 1997-2005 2010-2012
7 Simazine 1997-2006 2007-2012
8 Propanil Its half life is too low
9 Molinate - - Low application after 2009
10 Fipronil - - Insufficient observed data
11 Desulfinyl fipronil - - Insufficient observed data
12 Clomazone - - Insufficient observed data
13 Imidacloprid - - Not in the list of detected material
14 Azoxystrobin - - Not in the list of detected material
15 3,4-dichloroaniline - - Insufficient observed data