Knowledge Resource Center for Ecological Environment in Arid Area
| 报告编号 | N20040086061 |
| Validation of the Ceres Shortwave Measurements Over Deset and Cloud Scenes. | |
| Currey, C; Green, R. | |
| 英文摘要 | The Clouds and the Earth’s Radiant Energy System (CERES) broadband shortwave channel, 0.3 - 5 micrometer, measures atmosphere and surface reflected solar radiation. CERES provides an in-flight tungsten lamp to monitor the shortwave radiometric stability over the lifetime of the instrument. Initial Tropical Rainfall Measurement Mission (TRMM) tungsten calibration results indicate a 0.6% change over the first six months of mission life (Priestley et al. 1998). The three channel intercomparison technique and the solar diffuser calibration results show shortwave stabilities of 0.2% and 0.3% for the same time period (Priestley et al. 1998). Current belief is that the tungsten lamp, not the radiometer, has drifted. Radiometers, optics, and onboard calibrators exposed to the harsh space environment often degrade. Independent validation studies based on bright Earth viewing measurements are necessary to support the in-flight filtered calibration results. |
| 英文关键词 | Clouds(Meteorology) Reflectance Radiometry Validation Deserts Albedo Sahara desert Algorithms ERBE(Earth Radiation Budget Experiment) ScaRaB(Scanning Radiometer for Radiation Budget) CERES(Clouds and the Earth’s Radiant Energy System) |
| 出版年 | 2004 |
| 语种 | 英语 |
| 国家 | United States |
| URL | http://r.cnki.net/KCMS/detail/detail.aspx?DbCode=KJBG&dbname=KJBGW&filename=5a00360031c97d1c38971f01 |
| 来源机构 | National Aeronautics and Space Administration |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/273250 |
| 推荐引用方式 GB/T 7714 | Currey, C,Green, R.. Validation of the Ceres Shortwave Measurements Over Deset and Cloud Scenes.,2004. |
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