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Article: Evaluation of satellite-estimated surface longwave radiation using ground-based observations
Title | Evaluation of satellite-estimated surface longwave radiation using ground-based observations |
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Authors | |
Issue Date | 2010 |
Citation | Journal of Geophysical Research Atmospheres, 2010, v. 115, n. 18, article no. D18214 How to Cite? |
Abstract | This study evaluates four satellite-estimated data sets of surface longwave radiation (LW), the Global Energy and Water Cycle Experiment-Surface Radiation Budget (GEWEX-SRB), the International Satellite Cloud Climatology Project-Flux Data (ISCCP-FD), the Clouds and Earth Radiant Energy System-Gridded Radiative Fluxes and Clouds (CERES-FSW), and a newly developed data set from the Moderate Resolution Imaging Spectroradiometer (MODIS), with ground measurements at 15 sites of 2003. GEWEX-SRB (1°*1°) and ISCCP-FD (280 km*280 km) irradiance are available at 3-hourly intervals, CERES-FSW (1°*1°) and MODIS (1 km°1 km) irradiance are available at satellite overpass time. Evaluation is carried out separately for clear-sky, cloudy sky and all-sky conditions. Results show that, under all-sky conditions, downwelling LW (LWDN) in ISCCP-FD is overestimated while in CERES-FSW it is underestimated; but for LWDN in GEWEX-SRB and upwelling LW (LWUP) in all data sets, estimation errors are region-dependent: no uniform trend can be found. Under clear-sky conditions, LWDN in most data sets is underestimated, with some exceptions; LWUP in GEWEX-SRB and ISCCP-FD is overestimated while in CERES-FSW and MODIS it is underestimated with some exceptions. Under cloudy sky conditions, LWDN is overestimated in GEWEX-SRB and ISCCP-FD while it is underestimated in CERES-FSW; LWUP in most data sets is underestimated, with some exceptions. All data sets perform better when estimating LWUP than LWDN, during the nighttime than during the daytime, and under clear-sky conditions than under cloudy sky conditions. However, there are substantial errors in some regions, such as LWDN overestimation by ISCCP-FD on the Qinghai-Tibetan Plateau. Such errors are related to the errors of input precipitable water vapor, temperature, and elevation differences. Copyright 2010 by the American Geophysical Union. |
Persistent Identifier | http://hdl.handle.net/10722/321419 |
ISSN | 2015 Impact Factor: 3.318 2020 SCImago Journal Rankings: 1.670 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Gui, Sheng | - |
dc.contributor.author | Liang, Shunlin | - |
dc.contributor.author | Li, Lin | - |
dc.date.accessioned | 2022-11-03T02:18:48Z | - |
dc.date.available | 2022-11-03T02:18:48Z | - |
dc.date.issued | 2010 | - |
dc.identifier.citation | Journal of Geophysical Research Atmospheres, 2010, v. 115, n. 18, article no. D18214 | - |
dc.identifier.issn | 0148-0227 | - |
dc.identifier.uri | http://hdl.handle.net/10722/321419 | - |
dc.description.abstract | This study evaluates four satellite-estimated data sets of surface longwave radiation (LW), the Global Energy and Water Cycle Experiment-Surface Radiation Budget (GEWEX-SRB), the International Satellite Cloud Climatology Project-Flux Data (ISCCP-FD), the Clouds and Earth Radiant Energy System-Gridded Radiative Fluxes and Clouds (CERES-FSW), and a newly developed data set from the Moderate Resolution Imaging Spectroradiometer (MODIS), with ground measurements at 15 sites of 2003. GEWEX-SRB (1°*1°) and ISCCP-FD (280 km*280 km) irradiance are available at 3-hourly intervals, CERES-FSW (1°*1°) and MODIS (1 km°1 km) irradiance are available at satellite overpass time. Evaluation is carried out separately for clear-sky, cloudy sky and all-sky conditions. Results show that, under all-sky conditions, downwelling LW (LWDN) in ISCCP-FD is overestimated while in CERES-FSW it is underestimated; but for LWDN in GEWEX-SRB and upwelling LW (LWUP) in all data sets, estimation errors are region-dependent: no uniform trend can be found. Under clear-sky conditions, LWDN in most data sets is underestimated, with some exceptions; LWUP in GEWEX-SRB and ISCCP-FD is overestimated while in CERES-FSW and MODIS it is underestimated with some exceptions. Under cloudy sky conditions, LWDN is overestimated in GEWEX-SRB and ISCCP-FD while it is underestimated in CERES-FSW; LWUP in most data sets is underestimated, with some exceptions. All data sets perform better when estimating LWUP than LWDN, during the nighttime than during the daytime, and under clear-sky conditions than under cloudy sky conditions. However, there are substantial errors in some regions, such as LWDN overestimation by ISCCP-FD on the Qinghai-Tibetan Plateau. Such errors are related to the errors of input precipitable water vapor, temperature, and elevation differences. Copyright 2010 by the American Geophysical Union. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of Geophysical Research Atmospheres | - |
dc.title | Evaluation of satellite-estimated surface longwave radiation using ground-based observations | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1029/2009JD013635 | - |
dc.identifier.scopus | eid_2-s2.0-77957567025 | - |
dc.identifier.volume | 115 | - |
dc.identifier.issue | 18 | - |
dc.identifier.spage | article no. D18214 | - |
dc.identifier.epage | article no. D18214 | - |
dc.identifier.isi | WOS:000282506800004 | - |