Journal of the Graduate School of the Chinese Academy of Sciences

Transcript

1 Journal of the Graduate School of the Chinese Academy of Sciences Vol 24 September No : (2007) g 2 1 (1,,, ; 2,, ) ( ; ) Che HZ, Shi GY, Zhang XY Aerosol optical characteristics and its direct radiative forcing in BeijingJ ournal of the Graduate School of the Chinese Academy of Sciences, 2007,24( 5) : , :500nm,Angstrom,,,,,, X51 1,, (WΠm 2 ),, [1 ] [2 4 ] 2 : (1), ; [5 ] (2), [6 ; ] (, ), [7 ] [8 10 ], 20 90, [11 14 ] 20 80, 3 (2006CB403702,2006CB403705) ge2mail cma gov cn China Academic Journal Electronic Publishing House All rights reserved

2 [15 20 ],,, NASA 200 AERONET, PHOTONS ;, (SKYNET),, [21, 22 ],, Pom201, Nakajima [13 ] Angstrom, , ( N, E) ( 1),,2004 1, , , nm Angstrom 2 : 500nm 3 7, 6, 0192 ;, 014 Angstrom,, ;, 3, 0167, 7, 1130 (12 2 ), 6, 11 2, 2 500nm Angstrom nm Angstrom China Academic Journal Electronic Publishing House All rights reserved

3 5, : ( 3) , ,,,, -, ( ) , ( 4) m, 4 m Dubovic [12 ], ;, (10-2 m 3 Π m 2 ) Π m ΠE202 ΠE202 ΠE202 ΠE202 ΠE202 ΠE202 ΠE202 ΠE202 ΠE202 ΠE202 ΠE : China Academic Journal Electronic Publishing House All rights reserved

4 TOMS [23, 24, Rstar 5b ], 5 5 WΠm , 6 ( ) WΠm 2, 4 5 7, ( ) WΠm 2 ( ) WΠm 2 ( ) WΠm 2,12 2 ( ) WΠm 2 ( ) WΠm 2, ( 5) 4 6 7, 6, ( ) WΠm 2 3 8, ( ) WΠm 2 ( ) WΠm 2 ( - 4) ( - 8) WΠm ,, 6, ( ) WΠm 2 ; 2, ( ) WΠm 2 1, 6 ; , ,,, 6, 4 (1),500nm,,,Angstrom, China Academic Journal Electronic Publishing House All rights reserved

5 5, : , ;,, (2),, ( ) WΠm 2 ; ( ) WΠm 2 ; ( ) WΠm 2 A Uchiyama A Yamazaki [ 1 ] Shi GY Radiative forcing and greenhouse effect due to the atmospheric trace gases Science in China (B), 1992, 35 (2) : [ 2 ] Heintzenberg J, Welch RM Retrieval of aerosol size distribution from angular scattering functions : effects of particle composition and shape Applied Optics, 1982, 21 : [ 3 ] Hitzenberger R, Rizzi R Retrieved and measured aerosol mass size distributions : a comparison Applied Optics, 1986, 25 : [ 4 ] Sokolik I, Andronova A, Johnson TC Complex refractive index of atmospheric dust aerosols Atmospheric Environment, 1993, 27(2) : [ 5 ] Jacobson MZ Global direct radiative forcing due to multicomponent anthropogenic and natural aerosols Nature, 2001, 409 : [ 6 ] Breon FM, Tanre D, Generoso S Aerosols effect on the cloud droplet size monitored from satellite Science, 2002, 295 : [ 7 ] Houghton JT, et al Intergovernmental panel on climate ( IPCC), Third assessment report, climate change New York : Cambridge Univ Press, 2001 [ 8 ] Linker F Transmission coefficient und trubungs factor Beitraege zur Physik der Atmosphaere, 1922, 10 : 91 [ 9 ] Angstrom A On the atmospheric transmission of sun radiation and on dust in the air Geografisha Annaler, 1929,11 : [10 ] Angstrom A On the atmospheric transmission of sun radiation Geografisha Annaler, 1930, 2 : [11 ] Dubovik O, Smirnov A, Holben BN, et al Accuracy assessment of aerosol optical properties retrieved from Aerosol Robotic Network (AERONET) sun and sky radiance measurements Journal of Geophysical Research, 2000, 105 : [12 ] Dubovik O, Holben BN, Eck TF, et al Variability of absorption and optical properties of key aerosol types observed in worldwide locations Journal of Atmospheric Sciences, 2002, 59 : [13 ] Nahajima T, Tonna G, Rao R, et al Use of sky brightness measurements from ground for remote sensing of particulate polydispersions Applied Optics, 1996, 35 : [14 ] Kim DH, Sohn BJ, Nakajima T, et al Aerosol optical properties over East Asia determined from ground2based sky radiation measurements Journal of Geophysical Research,2004,109 :D02209, doi : Π2003JD [15 ],,, (B), 1983, 10 : [16 ],,, 1983, 41 (3) : [17 ],, 1996, 20 (4) : [18 ] :, 1995, 19 (4) : [19 ] Shi GY, Fan X, Guo JD, et al Measurements of the atmospheric aerosols optical properties in HEIFE area In : Proceeding of International Symposium on HEIFE [20 ],,, 1998, 22 (4) : [21 ],,,, 2002, 13 (Z1) : [22 ],,, 2002, 22 (6) : [23 ] Nakajima T, Tanaka M Matrix formulations for the transfer of solar radiation in a plane2parallel scattering atmosphere Journal of Quantitative Spectroscopy & Radiative Transfer, 1986, 35 : [24 ] Nakajima T, Tanaka M Algorithms for radiative intensity calculations in moderately thick atmospheres using a truncation approximation Journal of Quantitative Spectroscopy & Radiative Transfer, 1988, 40 : China Academic Journal Electronic Publishing House All rights reserved

6 Aerosol optical characteristics and its direct radiative forcing in Beijing CHE Hui2Zheng 1 SHI Guang2Yu 2 ZHANG Xiao2Ye 1 (1 Key Laboratory for Atmospheric Chemistry ( LAC), Centre for Atmosphere Watch and Services ( CAWAS), Chinese Academy of Meteorological Sciences ( CAMS), CMA, Beijing , China 2 State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing , China) Abstract The aerosol optical properties have been retrieved from skyradiometer observation data Seasonal variations of aerosol optical properties including Aerosol Optical Depth (AOD), Angstrom exponent (alpha), Single Scattering Albedo (SSA), volume size distribution have been analyzed These retrieval results are inputted into a radiation transfer model and aerosol radiative forcing (ARF) under clear sky condition at Top of Atmosphere ( TOA) and surface are calculated over Beijing The seasonal variation of ARF is discussed Key words skyradiometer, aerosol, optical properties, radiative forcing China Academic Journal Electronic Publishing House All rights reserved