Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 7 6 2007 10.5194/acpd-7-15565-2007 http://www.atmos-chem-phys-discuss.net/7/15565/2007/ http://www.atmos-chem-phys-discuss.net/7/15565/2007/acpd-7-15565-2007.html http://www.atmos-chem-phys-discuss.net/7/15565/2007/acpd-7-15565-2007.pdf 15565 15580 2007-11-05 Dust aerosol radiative effect and influence on urban atmospheric boundary layer L. Zhang zhanglei@lzu.edu.cn M. Chen L. Li College of Atmospheric Sciences, Lanzhou University, Lanzhou, 730000, China Key Laboratory of Western China's Environmental Systems (Ministry of Education), Lanzhou University, Lanzhou, 730000, China Beijing Regional Climate Center, Beijing Meteorological Bureau, Beijing, 100089, China An 1.5-level-closure and 3-D non-stationary atmospheric boundary layer (ABL) model and a radiation transfer model with the output of Weather Research and Forecast (WRF) Model and lidar AML-1 are employed to simulate the dust aerosol radiative effect and its influence on ABL in Beijing for the period of 23–26 January 2002 when a dust storm occurred. The simulation shows that daytime dust aerosol radiative effect heats up the ABL at the mean rate of about 0.68 K/h. The horizontal wind speed from ground to 900 m layer is also overall increased, and the value changes about 0.01 m/s at 14:00 LT near the ground. At night, the dust aerosol radiative effect cools the ABL at the mean rate of −0.21 K/h and the wind speed lowers down at about −0.19 m/s at 02:00 LT near the ground. Alpert, P., Kaufman, Y J., Shay-El, Y., Tanre, D., da~Silva, A., Schubert, S., and Joseph, J H.: Quantification of dust-forced heating of the lower troposphere, Nature, 395, 367–370, 1998. Fox, D. G.: Judging air quality model performance, Bull. Am. Meteorol. Soc., 62(5), 599–609, 1981. Li, X. S., Zhou, J. Q., Li, Z., Fang, X. M., He, Z. S., and Parungo, F.: A Numerical Simulation of "5.5" Super-Duststorm in Northern China, Adv. Atmos. Sci., 15(1), 63–73, 1998. Markowicz K. M., Flatau, P. J., Vogelmann, A. M., Quinn, P. K., and Welton, E. J.: Clear-sky infrared aerosol radiative forcing at the surface and the top of the atmosphere, Q. J. R. Meteorol. Soc., 129, 2927–2947, 2003. McTainsh, G. H., Burges, R. C., and Pitblado, J. R.: Aridity drought and dust storms in Australia (1960–1984), J. Arid Environ., 16, 11–22, 1989. McTainsh, G. H., Lynch, A. W., and Burgess, R. C.: Wind erosion in eastern Australia, Australian J. Soil Res., 28, 323–339, 1990. McTainsh, G. H., Lynch, A. W., and Tews, E. K.: Climatic controls upon dust storm occurrence in eastern Australia, J. Arid Environ., 39, 457–466, 1998. Ramanathan, V., Crutzen, P. J., Kiehl, J. T., and Rosenfeld, D.: Aerosols, Climate, and the Hydrological Cycle, Science, 294, 2119–2124, 2001. Skamarock, W. C., Klemp, J. B., Dudhia, J., Gill, D. O., Barker, D. M., Wang, W., and Powers, J. G.: A Description of the Advanced Research WRF Version 2. National Center for Atmospheric Research, 88pp, http://www.mmm.ucar.edu/wrf/users/docs/arw_v2.pdf, 2005. Sokolik, I. N., Toon, O. B., and Bergstrom, R. W.: Modeling the radiative characteristics of airborne mineral aerosols at infrared wavelength, J. Geophys. Res., 103, 8813–8826, 1998. Sokolik, I. N. and Toon, O. B.: Incorporation of mineralogical composition into models of radiative properties of mineral aerosol from UV to IR wavelength, J. Geophys. Res., 104, 9423–9444, 1999. Vogelmann, A. M., Flatau, P. J., Szczodrak, M., Markowicz, K. M., and Minnett, P. J.: Observation of large aerosol infrared forcing at the surface, Geophys. Res. Lett., 30(12), 1655, doi:10.1029/2002GL016829, 2003. Wang, H., Shi, G. Y., Li, S. Y., Li, W., Wang, B., and Huang, Y. B.: The Impacts of Optical Properties on Radiative Forcing Due to Dust Aerosol, Adv. Atmos. Sci., 23(3), 431–441, 2006. Wang, M. X. and Zhang, R. J.: Frontier of Atmospheric Aerosols Researches, Climatic and Environmenta1 Research, 6(1), 119–124, 2001. % %Xingsheng, L., Jianqiang, Z., Zhe, L., Xiumei, F., and Zhuanshi, H.: Farn %Parungo: A Numerical Simulation of "5.5" Super-Duststorm in Northern China, %Ad. Atmos. Sci., 15(1), 63–73, 1998. Yang, L. J., Zhang, Y. C., Liu, X. Q., et al.: Optical Properties of Aerosol Detected by Mobile Lidar System, Chinese Journal of Quantum Electronics, 21(1), 88–91, 2004. Zhang, L.: A study of interaction of urban atmospheric aerosol and boundary layer, Ph. D. dissertation, Lanzhou University, 96 pp., 2001. Zhang, R. J., Wang, M. X., and Fu, J. Z.: Preliminary research on the size distribution of aerosols in Beijing, Adv. Atmos. Sci., 18(2), 225–230, 2001.