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| DOI | 10.1016/j.rse.2020.112082 |
| DART: Improvement of thermal infrared radiative transfer modelling for simulating top of atmosphere radiance | |
| Wang Y.; Gastellu-Etchegorry J.-P. | |
| 发表日期 | 2020 |
| ISSN | 00344257 |
| 卷号 | 251 |
| 英文摘要 | Land surface temperature (LST) is increasingly needed for studying the functioning of the Earth's surface at local to global scale. Radiative transfer (RT) models that simulate top of atmosphere (TOA) radiance are essential tools to derive accurate LST from thermal infrared (TIR) signals of Earth observation (EO) satellites. DART (Discrete Anisotropic Radiative Transfer) is one of the most accurate and comprehensive three-dimensional models that simulate RT in the Earth-atmosphere system. Up to version 5.7.3, the mean absolute error (MAE) of DART atmospheric TIR radiance of six standard atmospheres (USSTD76, TROPICAL, MIDDLATSUM, MIDDLATWIN, SUBARCSUM, SUBARCWIN) over 3.5 μm - 20 μm was 3.1 K compared to the reference atmospheric RT model MODTRAN, which is much larger than the 1 K accuracy needed by most LST applications. Also, the radiance error reached 2.6 K for some TIR bands whereas the noise equivalent differential temperature (NeDT) of satellite TIR sensor is usually less than 0.4 K. Recently, the DART atmospheric RT modelling was greatly improved by (1) introducing the equivalent absorption cross-section of five most absorbing gases (H2O, CO2, O3, CH4, N2O), and (2) implementing a double-layer thermal emission method. The MAE of DART atmospheric TIR radiance of six standard atmospheres and actual atmospheres over France and the Mediterranean Sea is now better than 1.0 K. The band radiance error is less than 0.2 K in the EO satellite TIR bands. DART is still accurate if the temperature profiles of standard atmospheres are offset by less than 6 K and if the viewing zenith angle is less than 50°. In short, the improved DART meets the requirements of both LST applications, and present and future TIR EO satellite missions. It is already available to scientists (https://dart.omp.eu). © 2020 Elsevier Inc. |
| 英文关键词 | Absorption cross-section; Atmosphere; DART; MODTRAN; Radiative transfer; Thermal infrared |
| 语种 | 英语 |
| scopus关键词 | Atmospheric radioactivity; Errors; Infrared radiation; Land surface temperature; Radiative transfer; Satellites; Absorption cross sections; Earth observations; Mean absolute error; Radiative transfer model; Standard atmospheres; Temperature profiles; Three-dimensional model; Top-of-atmosphere radiances; Atmospheric temperature; absorption; anisotropic medium; land surface; land-atmosphere interaction; radiative transfer; satellite data; surface temperature; top of atmosphere; zenith angle; France; Mediterranean Sea |
| 来源期刊 | Remote Sensing of Environment
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/179138 |
| 作者单位 | CESBIO, CNES-CNRS-IRD-UPS, University of Toulouse, Toulouse, CEDEX 09 31401, France |
| 推荐引用方式 GB/T 7714 | Wang Y.,Gastellu-Etchegorry J.-P.. DART: Improvement of thermal infrared radiative transfer modelling for simulating top of atmosphere radiance[J],2020,251. |
| APA | Wang Y.,&Gastellu-Etchegorry J.-P..(2020).DART: Improvement of thermal infrared radiative transfer modelling for simulating top of atmosphere radiance.Remote Sensing of Environment,251. |
| MLA | Wang Y.,et al."DART: Improvement of thermal infrared radiative transfer modelling for simulating top of atmosphere radiance".Remote Sensing of Environment 251(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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