Taklimakan dust aerosol radiative heating derived from CALIPSO observations using the Fu-Liou radiation model with CERES constraints

被引:239
作者
Huang, J. [1 ]
Fu, Q. [1 ,2 ]
Su, J. [1 ]
Tang, Q. [1 ]
Minnis, P. [3 ]
Hu, Y. [3 ]
Yi, Y. [4 ]
Zhao, Q. [5 ]
机构
[1] Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Peoples R China
[2] Univ Washington, Dept Atmosphere Sci, Seattle, WA 98195 USA
[3] NASA, Langley Res Ctr, Hampton, VA 23665 USA
[4] Sci Syst & Applicat Inc, Hampton, VA 23666 USA
[5] Gansu Meteorol Bur, Lanzhou 73000, Peoples R China
基金
美国国家科学基金会;
关键词
OPTICAL-PROPERTIES; APRIL; 1998; CLOUDS; DEPOLARIZATION; SENSITIVITY; TRANSPORT; REGIONS; EVENTS; CHINA;
D O I
10.5194/acp-9-4011-2009
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The dust aerosol radiative forcing and heating rate over the Taklimakan Desert in Northwestern China in July 2006 are estimated using the Fu-Liou radiative transfer model along with satellite observations. The vertical distributions of the dust aerosol extinction coefficient are derived from the CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations) lidar measurements. The CERES (Cloud and the Earth's Energy Budget Scanner) measurements of reflected solar radiation are used to constrain the dust aerosol type in the radiative transfer model, which determines the dust aerosol single-scattering albedo and asymmetry factor as well as the aerosol optical properties' spectral dependencies. We find that the dust aerosols have a significant impact on the radiative energy budget over the Taklimakan desert. In the atmospheres containing light, moderate and heavy dust layers, the dust aerosols heat the atmosphere (daily mean) by up to 1, 2, and 3 K day(-1), respectively. The maximum daily mean radiative heating rate reaches 5.5 K day(-1) at 5 km on 29 July. The averaged daily mean net radiative effect of the dust are 44.4, -41.9, and 86.3 W m(-2), respectively, at the top of the atmosphere (TOA), surface, and in the atmosphere. Among these effects about two thirds of the warming effect at the TOA is related to the longwave radiation, while about 90% of the atmospheric warming is contributed by the solar radiation. At the surface, about one third of the dust solar radiative cooling effect is compensated by its longwave warming effect. The large modifications of radiative energy budget by the dust aerosols over Taklimakan Desert should have important implications for the atmospheric circulation and regional climate, topics for future investigations.
引用
收藏
页码:4011 / 4021
页数:11
相关论文
共 53 条
[1]   Reduction of tropical cloudiness by soot [J].
Ackerman, AS ;
Toon, OB ;
Stevens, DE ;
Heymsfield, AJ ;
Ramanathan, V ;
Welton, EJ .
SCIENCE, 2000, 288 (5468) :1042-1047
[2]   AEROSOLS, CLOUD MICROPHYSICS, AND FRACTIONAL CLOUDINESS [J].
ALBRECHT, BA .
SCIENCE, 1989, 245 (4923) :1227-1230
[3]  
CARLSON TN, 1980, J ATMOS SCI, V37, P193, DOI 10.1175/1520-0469(1980)037<0193:RHRFSD>2.0.CO
[4]  
2
[5]   Uncertainties in assessing radiative forcing by mineral dust [J].
Claquin, T ;
Schulz, M ;
Balkanski, Y ;
Boucher, O .
TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY, 1998, 50 (05) :491-505
[6]   Modeling the mineralogy of atmospheric dust sources [J].
Claquin, T ;
Schulz, M ;
Balkanski, YJ .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1999, 104 (D18) :22243-22256
[7]  
Dubovik O, 2002, J ATMOS SCI, V59, P590, DOI 10.1175/1520-0469(2002)059<0590:VOAAOP>2.0.CO
[8]  
2
[9]  
Forster P., 2007, CONTRIBUTION WORKING, DOI DOI 10.1103/PHYSREVB.77.220407
[10]  
FU Q, 1993, J ATMOS SCI, V50, P2008, DOI 10.1175/1520-0469(1993)050<2008:POTRPO>2.0.CO