用MFRSR仪器观测气溶胶光学厚度

J4 ›› 2010, Vol. 27 ›› Issue (2): 234-241.

用MFRSR仪器观测气溶胶光学厚度

王莉萍^1,2, 赵凤生³, 李占清⁴

1 中国气象科学研究院, 北京 100081
2 国家气象中心，北京 100081
3 国家卫星气象中心，北京 100081
4 马里兰大学，马里兰 21228

出版日期:2010-03-28 发布日期:2010-03-05
基金资助:
国家自然基金重点课题(40637035)

Observing aerosol optical depth with MFRSR

WANG Li-Ping^1,2, ZHAO Feng-Sheng³, LI Zhan-Qing⁴

1 Chinese Academy of Meteorological Sciences,，Beijing 100081,China
2 National Meteorological Center，Beijing 100081, China
3 National Satellite Meteorological Center，Beijing 100081, China
4 Maryland University， Maryland 21228

Published:2010-03-28 Online:2010-03-05

摘要/Abstract

摘要：

气溶胶对激光大气传输有着重要的影响。MFRSR(多光谱旋转遮蔽影带辐射计)是一种用于地基辐射和气溶胶测量的仪器。该仪器使用自动旋转影带技术同时在七个波段交替进行总的水平辐射和漫射水平辐射测量，然后推算得出直接辐射。其中6个波段的中心波长分别是414.3nm，495.3nm，613.7nm，671.5nm，867.6nm，939.3nm，还有一个硅探测器进行宽波段太阳总辐射测量。本文首先介绍了MFRSR仪器及其定标和资料处理方法，然后利用香河观测站2004-2005年MFRSR观测资料，分析了气溶胶的统计特性。为了说明利用MFRSR观测气溶胶光学厚度的可靠性，我们将MFRSR与AERONET的观测结果进行了比较，结果表明二者在500nm、670nm和870nm三个波段的平均偏差分别为-0.021，-0.009，-0.004；标准差分别为0.067，0.051，0.050。文中还对造成二者偏差的原因进行了讨论。

关键词: MFRSR, 定标, 气溶胶光学厚度

Abstract:

MFRSR (multi-filter rotating shadow-band radiometer) is a ground-based instrument and used to make measures of irradiance and aerosol. It uses automated rotating shadow-band technique to alternatively make measurements of total horizontal and diffuse horizontal irradiances at seven wavelengths simultaneously, and then deduce direct normal irradiance. In addition to broadband Silicon detector measures total solar irradiance, center wavelengths of the other six wave bands are 414.3nm, 495.3nm, 613.7nm, 671.5nm, 867.6nm and 939.3nm. This paper introduces the instrument of MFRSR, the method of calibration and data processing, and then analyses statistical properties of aerosol using observation of MFRSR during 2004-2005 in Xianghe. In order to illuminate the reliability of observing aerosol optical depth with MFRSR, we compare the results of MFRSR with AERONET data. It shows the mean differences of the two results respectively are -0.021，-0.009，-0.004 at the wavelengths of 500nm, 670nm, 870nm, and the standard deviations are 0.067，0.051，0.050. The reasons for deviation of the two are also discussed.

Key words: MFRSR, calibration, aerosol optical depth

王莉萍赵凤生李占清. 用MFRSR仪器观测气溶胶光学厚度[J]. J4, 2010, 27(2): 234-241.

WANG Li-Ping, ZHAO Feng-Sheng, LI Zhan-Qing. Observing aerosol optical depth with MFRSR[J]. J4, 2010, 27(2): 234-241.

参考文献

[1] Harrison Lee, Joseph Michalsky, and Jerry Berndt, et al. Automated multifilter rotating shadow-band radiometer : an instrument for optical depth and radiation measurements Appl. Opt. 1994 Vol.33,No.22 5118-5125

[2] Harrison Lee and Joseph Michalsky et al. Objective algorithms for the retrieval of optical depths from ground-based measurements Appl. Opt. 1994 Vol.33, No.22 5126-5132

[3] Schmid B.， J.Michalsky，R. Halthore，M . Beauharnois, L. Harnson, J.Livingston，P. Russesll，B. Holben，T. Eck，and A.Smirnov Comparison of Aerosol Optical Depth from Four Solar Radiometers During the Fall 1997 ARM Intensive Observation Period GEOPHYSICAL RESEARCH LETTERS 1999 Vol. 26, No. 17, 2725-2728。

[4] Halthore N. Rangasayi, Stephen. E.Schwartz, Joseph J. Michalsky, Gail P. Anderson, Richard A. Ferrare, Brent N.Holben and Harry.M.Ten Brink Comparison of model estimated and measured direct-normal solar irradiance Journal Of Geophyscial Research, 1997 Vol. 102, No. D25, 29991-30002

[5] Augustine A. John, Christopher R. Cornwall, Gary B. Hodges, Charles N. Long, Carlos I. Medina, John J. Deluisi Automated method of MFRSR calibration for aerosol optical depth analysis with application to an Asian dust outbreak over the United States J. Appl.. Meteor., 2003 Vol. 42 266-278

[6] Long C.N. and T P Ackerman Identifivation of clear skies from broadband pyranometer measurements and calculation of downwelling shortwave cloud effects J Geophys Res 2003 105(D12), 15609-15626

[7] Krotkov Nickolay, Pawan K. Bhartia, Jay Herman, James Slusser, Gordon Labow, Gwendolyn Scott, George Janson, Thomas F. Eck , Brent Holben Aerosol ultraviolet absorption experiment (2002 to 2004), part 1 : ultraviolet multifilter rotating shadowband radiometer calibration and intercomparison with CIMEL sunphotometers Opt. Eng. 2005 Vol. 44(4) 041004-1-041004-17

[8] Alexandrov .D. Mikhail , Andrew .A. Lacis , Barbara .E. Carlson , Brian Cairns Remote sensing of atmospheric aerosol and trace gases by means of multifilter rotating shadowband radiometer .Part I: Retrieval Algorithm Journal of the atmospheric sciences 2002 vol .59 524-543

[9] Gerasopoulos E., M. O.Andteae , C. S. Zerefos , T. W. Andreae , D. Balis , P. Formenti , P.Merlet , V. Amiridis , and C. Papastefanou Climatological aspect of aerosol optical properities in Northern Greece Atmospheric Chemistry and Physics 2003 3 , 2025-2041

[10] Pace G., A. di Sarra , D. Meloni , S. Piacentino , and P. Chamard Aerosol optical properities at Lampedusa (Central Mediterranean). 1. Influence of transport and identification of different aerosol types Atmospheric chemistry and Physics 2006 6, 697-713

[11] Hansen E James. and Larry D.Travis Light scattering in planetary atmospheres Science Reviews16 1974 527-610

[12] Schmid Beat and Christoph Wehrli et al. Comparison of Sun photometer calibration by use of the Langley technique and the standard lamp Appl. Opt. 1995 Vol.34, No.21 4500-4512

[13]尹宏大气辐射学基础气象出版社 1993 122－145

[14]Ångström, A. The Parameters of Atmospheric Turbidity Tellus16, No.1 1964 64-75