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作 者:闵昌红 吴兴洋[2] 翁玲 何肖国 柯利平 MIN Changhong;WU Xingyang;WENG Ling;HE Xiaoguo;KE Liping(Guiyang Meteorological Bureau,Guiyang 550001,China;Climate Center of Guizhou Province,Guiyang 550002,China;Xifeng Meteorological Bureau,Xifeng 551100,China;Weining Meteorological Bureau,Weining 553100,China)
机构地区:[1]贵州省贵阳市气象局,贵州贵阳550001 [2]贵州省气象信息中心,贵州贵阳550002 [3]贵州省息烽县气象局,贵州息烽551100 [4]贵州省威宁县气象局,贵州威宁553100
出 处:《中低纬山地气象》2018年第5期62-66,共5页Mid-low Latitude Mountain Meteorology
摘 要:利用贵阳探空站2014—2016年L波段高空资料,运用净举力公式、绝热方程和统计分析等方法对贵阳影响探空高度的升速及净举力因素进行分析。结果表明:(1)本站平均升速均> 400 m·min^(-1),19时高于07时,探空高度19时比07时低427 m。(2)从地面到850 h Pa,实际升速小于标准密度升速,850 h Pa以上,实际升速大于标准密度升速,至10 h Pa附近,升速接近地面层附近两倍,平均每上升1 km增大约3%。(3)从净举力分析来看,业务工作中忽略日变化和季节变化因素,今后探测工作中,无雨、阴天、多云天气应少300~500 g,秋冬比春夏少300~700 g为宜。(4)净举力偏高从而降低了探测高度,通常控制在1 600~2 300 g之间为宜,平均升速可控制在360~400 m·min^(-1)。净举力分别为1 600 g、2 000 g、2 300 g,探测高度可在目前基础上提高约3 100 m、1 600 m、800 m。Based on the L - band data from sounding station in Guiyang from 2014 to 2016, the factors that af-fect net lifting force and force formula, adiabatic station is more than 400 speed - rising of the sounding altitude in Guiyang were analyzed by using the net lifting equation and statistical analysis. The results show: ① The average speed increase of this station is more than 400 m · min^-1 when the sounding height of 19 h is higher than 07 h. The sounding height of 19 h is 427 m lower than 07 h ② From the ground to 850 hPa, the actual rate of increase is lower than the standard rate of increase of 850 hPa. When it is higher than 850 hPa, the actual rate of increase is greater than the standard rate of increase. When it is near 10 hPa, the rate of increase is almost twice the rate of the ground level, with an average increase of about 3 % for every 1 km of increase. ③ According to the analysis of the net lifting force, daily variation and seasonal variation can be ignored in the practical work. The net lifting force is 300 g -500 g less in cloudy, overcast weather or the weather without rain. The net lifting force is 300 - 700 g in autumn and winter than in spring and summer. ④ The net lifting force is raised to lower the sounding height, with the force ranging be-tween 1 600 -2 300 g as most appropriate and the average rate of increase at 360 -400 m · min^-1. When net lift-ing force is 1 600 g, 2 000 g, 2 300 g respectively, the detection height can be increased about 3 100 m, 1 600 m, 800 m from cmTent height.
分 类 号:P412.2[天文地球—大气科学及气象学]
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