GSTDTAP  > 地球科学
DOI10.5194/acp-18-4439-2018
Comparing airborne and satellite retrievals of cloud optical thickness and particle effective radius using a spectral radiance ratio technique: two case studies for cirrus and deep convective clouds
Krisna, Trismono C.1; Wendisch, Manfred1; Ehrlich, Andre1; Jaekel, Evelyn1; Werner, Frank A.1,9; Weigel, Ralf3,4,5,6; Borrmann, Stephan3,4,5,6; Mahnke, Christoph3; Poeschl, Ulrich4,5,6; Andreae, Meinrat O.4,5,6,8; Voigt, Christiane2,3; Machado, Luiz A. T.7
2018-04-03
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2018
卷号18期号:7页码:4439-4462
文章类型Article
语种英语
国家Germany; Brazil; USA
英文摘要

Solar radiation reflected by cirrus and deep convective clouds (DCCs) was measured by the Spectral Modular Airborne Radiation Measurement System (SMART) installed on the German High Altitude and Long Range Research Aircraft (HALO) during the Mid-Latitude Cirrus (ML-CIRRUS) and the Aerosol, Cloud, Precipitation, and Radiation Interaction and Dynamic of Convective Clouds System - Cloud Processes of the Main Precipitation Systems in Brazil: A Contribution to Cloud Resolving Modelling and to the Global Precipitation Measurement (ACRIDICON-CHUVA) campaigns. On particular flights, HALO performed measurements closely collocated with overpasses of the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua satellite. A cirrus cloud located above liquid water clouds and a DCC topped by an anvil cirrus are analyzed in this paper. Based on the nadir spectral upward radiance measured above the two clouds, the optical thickness tau and particle effective radius r(eff) of the cirrus and DCC are retrieved using a radiance ratio technique, which considers the cloud thermodynamic phase, the vertical profile of cloud microphysical properties, the presence of multilayer clouds, and the heterogeneity of the surface albedo. For the cirrus case, the comparison of tau and r(eff) retrieved on the basis of SMART and MODIS measurements yields a normalized mean absolute deviation of up to 1.2% for tau and 2.1% for r(eff). For the DCC case, deviations of up to 3.6% for tau and 6.2% for r(eff) are obtained. The larger deviations in the DCC case are mainly attributed to the fast cloud evolution and three-dimensional (3-D) radiative effects. Measurements of spectral upward radiance at near-infrared wavelengths are employed to investigate the vertical profile of r(eff) in the cirrus. The retrieved values of r(eff) are compared with corresponding in situ measurements using a vertical weighting method. Compared to the MODIS observations, measurements of SMART provide more information on the vertical distribution of particle sizes, which allow reconstructing the profile of r(eff) close to the cloud top. The comparison between retrieved and in situ r(eff) yields a normalized mean absolute deviation, which ranges between 1.5 and 10.3 %, and a robust correlation coefficient of 0.82.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000429011100003
WOS关键词IN-SITU MEASUREMENTS ; MIXED-PHASE CLOUDS ; UTLS WATER-VAPOR ; MICROPHYSICAL PROPERTIES ; SURFACE ALBEDO ; VERTICAL-DISTRIBUTION ; WESTERN PACIFIC ; CRYSTAL SHAPE ; THIN CIRRUS ; ICE CLOUDS
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; 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/23907
专题地球科学
作者单位1.Univ Leipzig, Leipzig Inst Meteorol, Leipzig, Germany;
2.German Aerosp Ctr DLR, Inst Atmospher Phys, Oberpfaffenhofen, Germany;
3.Johannes Gutenberg Univ Mainz, Inst Atmospher Phys, Mainz, Germany;
4.Max Planck Inst Chem MPIC, Biogeochem Dept, Mainz, Germany;
5.Max Planck Inst Chem MPIC, Multiphase Chem Dept, Mainz, Germany;
6.Max Planck Inst Chem MPIC, Particle Chem Dept, Mainz, Germany;
7.Natl Inst Space Res, Ctr Weather Forecast & Climates Studies, Sao Jose Dos Campos, Brazil;
8.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA;
9.Univ Maryland, Joint Ctr Earth Syst Technol, Baltimore, MD 21201 USA
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Krisna, Trismono C.,Wendisch, Manfred,Ehrlich, Andre,et al. Comparing airborne and satellite retrievals of cloud optical thickness and particle effective radius using a spectral radiance ratio technique: two case studies for cirrus and deep convective clouds[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(7):4439-4462.
APA Krisna, Trismono C..,Wendisch, Manfred.,Ehrlich, Andre.,Jaekel, Evelyn.,Werner, Frank A..,...&Machado, Luiz A. T..(2018).Comparing airborne and satellite retrievals of cloud optical thickness and particle effective radius using a spectral radiance ratio technique: two case studies for cirrus and deep convective clouds.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(7),4439-4462.
MLA Krisna, Trismono C.,et al."Comparing airborne and satellite retrievals of cloud optical thickness and particle effective radius using a spectral radiance ratio technique: two case studies for cirrus and deep convective clouds".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.7(2018):4439-4462.
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