Atmos. Chem. Phys. Discuss., 7, 15565-15580, 2007
www.atmos-chem-phys-discuss.net/7/15565/2007/
doi:10.5194/acpd-7-15565-2007
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Review Status
This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). A final paper in ACP is not foreseen.
Dust aerosol radiative effect and influence on urban atmospheric boundary layer
L. Zhang1,2, M. Chen1,2, and L. Li3
1College of Atmospheric Sciences, Lanzhou University, Lanzhou, 730000, China
2Key Laboratory of Western China's Environmental Systems (Ministry of Education), Lanzhou University, Lanzhou, 730000, China
3Beijing Regional Climate Center, Beijing Meteorological Bureau, Beijing, 100089, China

Abstract. 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.

Citation: Zhang, L., Chen, M., and Li, L.: Dust aerosol radiative effect and influence on urban atmospheric boundary layer, Atmos. Chem. Phys. Discuss., 7, 15565-15580, doi:10.5194/acpd-7-15565-2007, 2007.
 
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