U.S. Department of the Interior U.S. Geological Survey NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland ET for famine early warning, water use reporting, and drought monitoring James Verdin and Gabriel Senay Famine Early Warning Systems Network (FEWS NET) National Integrated Drought Information System (NIDIS) Department of the Interior WaterSMART U.S. Geological Survey, EROS Center, Sioux Falls, South Dakota

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland Famine Early Warning Systems Network An activity of the Office of Food for Peace at USAID, which directly supports its goal: “to ensure that appropriate… emergency food aid is provided to the right people in the right places at the right time and in the right way” FEWS NET is a food security decision support system with its own climate services

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland Famine Early Warning Systems Network · FEWS NET identifies the times and places that aid is need by the most food insecure populations of the developing world · The activity has been continuous since 1985 · The Office of Food for Peace distributed $2.8 B in aid in 2008

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland Famine Early Warning Systems Network · Livelihood systems are based on subsistence agriculture and/or pastoralism, and are highly climate- sensitive · Conventional climate station networks are sparse and/or late reporting · Satellite remote sensing and atmospheric models fill the gap, and provide the basis for early detection of agricultural drought

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland Famine Early Warning Systems Network · Rainfall, vegetation, snow pack, ET are monitored for rangelands, rain fed crops, and irrigated crops · A convergence of evidence approach is used

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland eMODIS FEWS NET NDVI 250 m, NASA LANCE – USGS eMODIS

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland Time Series Rainfall Grids · Use of NOAA satellite RFE since mid-1990s · A blend of TIR, MW, and station observations · Used in crop water balance models

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland Daily Global GDAS ETo for July 2004

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland GDAS ETo Validation Using CIMIS Station Data (San Benito: 2004) Senay, Verdin, Lietzow and Melesse, JAWRA.

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland WRSI = f (ppt, pet, WHC, Crop Type, SOS, EOS, LGP) RFE (NOAA) calculated from NOAA GDAS at EROS FAO soils map of the world Kc (FAO) Water Requirement Satisfaction Index

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland Mapping Agricultural Drought WRSI Soil Water Index

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland LST Ta ET fraction Weather Data Radiation Temp, Wind, RH Pressure ETo ETa Simplified Surface Energy Balance (SSEB) Approach NDVI Adapted the “hot” and “cold” pixel concept from SEBAL (Bastiaanssen et al., 1998) and METRIC (Allen et al., 2005) to calculate ET fraction and combine it with ETo. Senay, et al., Sensors, 7,

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland Energy Balance Estimates of Crop ET

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland Withdrawal Recharge Columbia Plateau Regional Aquifer Study

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland WaterSMART Availability and Use Assessment Program – Irrigation Water Use Location of irrigated fields · MODIS national irrigated lands classification · State government field boundary databases · USDA NASS common land unit or cropland data layer Status of irrigated fields · Irrigated or not in 2007? Vegetation index threshold · Crop type or group? Vegetation index seasonal curve Crop water use · Surface energy balance methods with LST · Joint use of Landsat and MODIS to get good frequency of observations Link consumptive use with point of withdrawal via state GIS databases

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland WaterSMART Availability and Use Assessment Program – Irrigation Water Use Crop type classificationCrop water use totals David Eckhardt, USBR

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland California Drought Impact California’s Drought of : An Overview California Department of Water Resources

NASA/USDA Workshop on Evapotranspiration April 6, 2011 – Silver Spring, Maryland Thank you