Operational global actual evapotranspiration: development, evaluation, and dissemination
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. The Operational Simplified Surface Energy Balance (SSEBop) model is currently used by t...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2020
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/108040 |
| _version_ | 1855533806632566784 |
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| author | Senay, Gabriel B. Kagone, Stefanie Velpuri, Naga Manohar |
| author_browse | Kagone, Stefanie Senay, Gabriel B. Velpuri, Naga Manohar |
| author_facet | Senay, Gabriel B. Kagone, Stefanie Velpuri, Naga Manohar |
| author_sort | Senay, Gabriel B. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | 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. 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. 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. 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. 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. While the absolute magnitude of SSEBop ETa would require a one-time bias correction for use in water budget studies to address local or regional conditions, the ETa anomalies can be used without further modifications for drought monitoring. All ETa products are freely available for download from the USGS FEWS NET website. |
| format | Journal Article |
| id | CGSpace108040 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1080402024-06-26T10:09:23Z Operational global actual evapotranspiration: development, evaluation, and dissemination Senay, Gabriel B. Kagone, Stefanie Velpuri, Naga Manohar evapotranspiration evaluation water balance energy balance drought monitoring models moderate resolution imaging spectroradiometer remote sensing satellite observation river basins precipitation estimation land cover 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. 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. 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. 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. 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. While the absolute magnitude of SSEBop ETa would require a one-time bias correction for use in water budget studies to address local or regional conditions, the ETa anomalies can be used without further modifications for drought monitoring. All ETa products are freely available for download from the USGS FEWS NET website. 2020-03-30 2020-04-21T10:12:45Z 2020-04-21T10:12:45Z Journal Article https://hdl.handle.net/10568/108040 en Open Access MDPI Senay, G. B.; Kagone, S.; Velpuri, Naga M. 2020. Operational global actual evapotranspiration: development, evaluation, and dissemination. Sensors, 20(7):1915. (Special issue: Advances in Remote Sensors for Earth Observation and Modeling of Earth Processes) |
| spellingShingle | evapotranspiration evaluation water balance energy balance drought monitoring models moderate resolution imaging spectroradiometer remote sensing satellite observation river basins precipitation estimation land cover Senay, Gabriel B. Kagone, Stefanie Velpuri, Naga Manohar Operational global actual evapotranspiration: development, evaluation, and dissemination |
| title | Operational global actual evapotranspiration: development, evaluation, and dissemination |
| title_full | Operational global actual evapotranspiration: development, evaluation, and dissemination |
| title_fullStr | Operational global actual evapotranspiration: development, evaluation, and dissemination |
| title_full_unstemmed | Operational global actual evapotranspiration: development, evaluation, and dissemination |
| title_short | Operational global actual evapotranspiration: development, evaluation, and dissemination |
| title_sort | operational global actual evapotranspiration development evaluation and dissemination |
| topic | evapotranspiration evaluation water balance energy balance drought monitoring models moderate resolution imaging spectroradiometer remote sensing satellite observation river basins precipitation estimation land cover |
| url | https://hdl.handle.net/10568/108040 |
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