Abstract
By using conventional micro-meteorological observation data of Beijing Yuetan Park Tower (180 m), the temperature profile of urban boundary layer (UBL), its characteristics and seasonal variation are analyzed. The main results are as follows: (1) In winter, the interdiurnal surface air temperature variation at the surface is not synchronized with that of the upper levels, other than in summer and other seasons, which illuminates the impacts of Beijing’s geographical location, sky view factor and stably stratified nocturnal inversion. (2) Except that the stratification is unstable around noon, the stratification in the roof layer or above-roof layer is of seasonal variability, which is weak unstable or weak stable in winter or summer respectively. This weak stable stratification possibly inhibits urban pollutant dispersion upwards in summer season. (3) The effect of urban building rooftop on the UBL thermal state has seasonal difference, that is, the rooftop plays the role of heating or cooling the urban roughness sublayer, in summer or winter respectively, which is similar to the effects of the Qinghai-Tibet Plateau on the atmospheric thermal state.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Arnfield A J. Two decades of urban climate research: A review of turbulence, exchanges of energy and water, and the urban heat island. Int J Climatol, 2003, 23: 1–26
Fernando H J S, Lee S M, Anderson J, et al. Urban fluid mechanics: Air circulation and contaminant dispersion in cities. Environ Fluid Mech, 2001, 1: 107–164
Rotach M W, Vogt R, Bernhofer C, et al. BUBBLE—An urban boundary layer meteorology project. Theor Appl Climatol, 2005, 81:231–261
Allwine J K, Shinn J H, Streit G E, et al. Overview of Urban 2000. Bull Amer Meteor Soc, 2002, 83: 521–536
Bian L G, Cheng Y J, Wang X, et al. Observational study of wind and temperature profiles of urban boundary layer in Beijing winter (in Chinese). J Appl Meteorol Sci, 2002, 13(Supp): 13–25
Xu X D. Dynamic issues of urban atmospheric pollution models (in Chinese). J Appl Meteorol Sci, 2002, 13(Supp): 1–12
The Climate Data Division of Beijing Meteorological Bureau. Climatography of Beijing (in Chinese). Beijing: China Meteorological Press, 1987
Kanda M, Moriwaki R, Kimoto Y. Temperature profiles within and above an urban canopy. Bound-layer Meteor, 2005, 115: 499–506
Wang X Q, Wang Z F, Guo H. The study of the urban heat island in Beijing City (in Chinese). Clim Environ Res, 2006, 11(5): 627–636
Arya S P. Introduction to Micrometeorology. San Diego California: Academic Press Inc, 1988
Pasquill F, Smith F R. Atmospheric Diffusion (3rd ed.). New York: Ellis Horwood Limited, 1983
Wu G X, Liu X, Zhang Q, et al. Progresses in the study of the climate impacts of the elevated heating over the Tibetan Plateau (in Chinese). Clim Environ Res, 2002, 7(2): 184–200
Zhao P, Chen L X. Role of atmospheric heat source/sink over the Qinghai-Xizang Plateau in quasi-4-year oscillation of atmosphere-land-ocean interaction. Chin Sci Bull, 2001, 46(3): 241–245
Baklanov A. the mixing height in urban areas — a review. In: Proceedings of the workshop on the mixing height and inversions in urban areas, Toulouse, France, 2001
Author information
Authors and Affiliations
Corresponding author
Additional information
Supported by the Knowledge Innovation Project of the Chinese Academy of Sciences (Grant No. KZCZ2-YW-219) and the Frontier Research of IAP of Chinese Academy of Sciences (Grant No. 8-070204)
About this article
Cite this article
Wang, X., Wang, Z. & Guo, H. Seasonal variation of the temperature profile and its characteristics within urban roughness sublayer. Chin. Sci. Bull. 54, 468–473 (2009). https://doi.org/10.1007/s11434-008-0463-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11434-008-0463-6