Accuracy of MM5 Wind Field Data Based on Passive DOAS Territorial Monitoring

Abstract

Abstract:

The mobile passive DOAS measurement for emissions of pollutants is widely used recently, but the acquisitions of wind field data is always a challenge. Comparative analyses of three kinds of wind field data under different atmospheric stability conditions are carried out by Pasquill-Turner stability classification method. Comparisons were carried out between the wind field collected from two different measurements and the wind field of micro-scale atmospheric modeling with the different stability of atmosphere. Under weak instable atmospheric conditions, wind speed data of MM5 model were consistent with the wind speed data of ground from meteorological station and wind profile radar, the contrast of wind direction data has a slight error. Under neutral atmospheric condition, the wind data of MM5 (10 m, 150 m) were consistent with the observed data from weather station and wind profile radar respectively. The results show that, they have high correlativity (>0.6), and the error is small. Therefore, the wind field data of MM5 is used for the mobile passive DOAS measurement of emissions of pollutants under the neutral atmospheric condition, to compensate the deficiencies of data caused by constrained weather measurements.

Key words: MM5, wind profile radar, Pasquill stability categeries, passive DOAS

CLC Number:

P435

YANG Jing-Wen, LI Ang, XIE Pin-Hua, ZHAO Xue-Song, WU Feng-Cheng, WANG Yang. Accuracy of MM5 Wind Field Data Based on Passive DOAS Territorial Monitoring[J]. Journal of Atmospheric and Environmental Optics, 2012, (5): 338-347.

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