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《Journal of Anhui Agricultural Sciences》 2011-29
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Study on A Long-drawn Heavy Fog of Freeway in Anhui of 2010

CHEN Xiao-hong et al(Anhui Meteorological Observatory,Hefei,Anhui 230061)  
Using the new encrypted auto station data generated in September 2010 of highway,and NOAA16 polar orbiting meteorological satellite date,routine meteorological observation to analyze a dense fog process in Anhui Province during November 17-18,2010,and causes for the formation of the fog were discussed.It was found that the dense fog was produced in the favorable weather background,the rainfall occurred in previous period is propitious to the vapor condition,under the high pressure control at night was conducive to the radiation cooling;With better humidity conditions,fog can formed in the case of low-level shallow inversion;The fog generated even if the humidity conditions are not very good when the inversion is significant.By hourly comparing test we found that highway data have higher confidence,it is a valuable reference for fog forecasting.When the fog does not appear on the weather station,the fog occurs on freeway auto station located within the county,freeway station observation information greatly make up for the lack of space-time density on weather station.The time fog generated in highway is about 3 hours earlier than the weather observation,it can improve the fog forecasting in warning time and accuracy.
【Fund】: 国家公益性行业(气象)科研专项(GYHY200906001);; 国家自然科学基金(40771207)
【CateGory Index】: P426.4
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