Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD029701 |
A Decadal Data Set of Global Atmospheric Dust Retrieved From IASI Satellite Measurements | |
Clarisse, L.1; Clerbaux, C.1,2; Franco, B.1; Hadji-Lazaro, J.2; Whitburn, S.1; Kopp, A. K.1; Hurtmans, D.1; Coheur, P. -F.1 | |
2019-02-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:3页码:1618-1647 |
文章类型 | Article |
语种 | 英语 |
国家 | Belgium; France |
英文摘要 | Aerosol is an important component of the Earth's atmosphere, affecting weather, climate, and diverse elements of the biosphere. Satellite sounders are an essential tool for measuring the highly variable distributions of atmospheric aerosol. Here we present a new algorithm for estimating atmospheric dust optical depths and associated retrieval uncertainties from spectral radiance measurements of the Infrared Atmospheric Sounding Interferometer (IASI). The retrieval is based on the calculation of a dust index and on a neural network trained with synthetic IASI spectra. It has an inherent high sensitivity to dust and efficiently discriminates dust from other aerosols. In particular, over remote dust-free areas, the retrieved levels of optical depth have a low bias. Over sea, noise levels are markedly lower than over land. Performance over deserts is comparable to that of other land surfaces. We use ground-based coarse mode aerosol measurements from the AErosol RObotic NETwork to validate the new product. The overall assessment is favorable, with standard deviations in line with estimated uncertainties, low biases, and high correlation coefficients. However, a systematic relative bias occurs between sites dominated by African and Asian dust sources respectively, likely linked to differences in mineralogy. The retrieval has been performed on over a decade of IASI data, and the resulting data set is now publicly available. We present a global seasonal dust climatology based on this record and compare it with those obtained from independent satellite measurements (Moderate Resolution Imaging Spectroradiometer and a third-party IASI product) and dust optical depth from the ECMWF model. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459377000026 |
WOS关键词 | AEROSOL OPTICAL DEPTH ; COMPLEX REFRACTIVE-INDEX ; NEURAL-NETWORK APPROACH ; MINERAL DUST ; SULFUR-DIOXIDE ; RADIATIVE CHARACTERISTICS ; DIURNAL VARIABILITY ; SURFACE EMISSIVITY ; INTERIM REANALYSIS ; VERTICAL PROFILES |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34247 |
专题 | 气候变化 |
作者单位 | 1.ULB, Serv Chim Quant & Photophys, Atmospher Spect, Brussels, Belgium; 2.Sorbonne Univ, CNRS, LATMOS IPSL, UVSQ, Paris, France |
推荐引用方式 GB/T 7714 | Clarisse, L.,Clerbaux, C.,Franco, B.,et al. A Decadal Data Set of Global Atmospheric Dust Retrieved From IASI Satellite Measurements[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(3):1618-1647. |
APA | Clarisse, L..,Clerbaux, C..,Franco, B..,Hadji-Lazaro, J..,Whitburn, S..,...&Coheur, P. -F..(2019).A Decadal Data Set of Global Atmospheric Dust Retrieved From IASI Satellite Measurements.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(3),1618-1647. |
MLA | Clarisse, L.,et al."A Decadal Data Set of Global Atmospheric Dust Retrieved From IASI Satellite Measurements".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.3(2019):1618-1647. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论