Fews net sensor4/29/2023 However, the modeled ETa seemed to show regional biases whose natures and magnitudes require a comprehensive investigation using complete water budgets and more quality-controlled EC station datasets. Evaluation of the SSEBop ETa data using 12 eddy covariance (EC) flux tower sites over six continents indicated reasonable performance in capturing seasonality with a correlation coefficient up to 0.87. Implementation of the global SSEBop using the Aqua satellite’s Moderate Resolution Imaging Spectroradiometer (MODIS) land surface temperature and global gridded weather datasets is presented. The Operational Simplified Surface Energy Balance (SSEBop) model is currently used by the US Geological Survey (USGS) Famine Early Warning System Network (FEWS NET) to routinely produce and post multitemporal ETa and ETa anomalies online for drought monitoring and early warning purposes. See the links below to access data provided by the FEWS NET science partners. For detailed guidance on the integration of rainfall data, forecast information, and remote sensing imagery into the scenario development process, see FEWS NET’s guidance document on Building Rainfall Assumptions for Scenario Development.Satellite-based actual evapotranspiration (ETa) is becoming increasingly reliable and available for various water management and agricultural applications from water budget studies to crop performance monitoring. For more information, please see the Agroclimatology Fact Sheet and the list of acronyms to the right.įour United States government agencies: the US Geological Survey (USGS), the National Oceanic and Atmospheric Administration (NOAA), the National Aeronautics and Space Administration (NASA), and the US Department of Agriculture (USDA) are indispensable partners, providing access to remote sensing imagery, data, and analysis on current conditions, historical trends, and future forecasts. In addition, FEWS NET produces weekly Global Weather Hazards reports, which anticipate severe weather or climate events in Africa, Latin America and the Caribbean, and Central Asia and Seasonal Monitor reports, which update rainfall totals, impacts on production, and short-term forecasts. These data include remote sensing imagery, historical rainfall totals, climate change analysis, forecasts, and an understanding of climate drivers like the El Niño–Southern Oscillation (ENSO). Analysts use this information to understand the climatology for areas of concern, to make assumptions about future conditions as part of scenario development, and to monitor and report on seasonal progress. The Ocean-Atmosphere Dynamics links at right provide additional information on climate-related phenomena: El Niño, La Niña, and the Indian Ocean Dipole (IOD).Īgroclimatology information is integrated into FEWS NET’s regular Outlook and Outlook Update analysis. While food security depends on a great complexity of factors, perhaps none is more consistently influential than the impact of weather and climate.Īgroclimatology data are critical parts of FEWS NET’s knowledge base. FEWS NET draws heavily on agroclimatology data for its food security analysis. Rainfall, snowfall, sea, and land surface temperatures-these directly affect the ability of small and large scale farmers around the world to grow crops, husband livestock, fish, or forage for food.
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