| 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：本站平均升速均>400 m.min-1,19约高于07时,探空高度低427m。②从地面到850hpa,实际升速小于标准密度升速,850hpa以上,实际升速大于标准密度升速,至10hpa附近,升速接近地面层附近两倍, 平均每上升1km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,正常无雨阴天多云少300g～500g,秋冬比春夏少300～700g为宜。④净举力偏高从而降低了探测高度,通常控制在1600～2300g之间为宜,平均升速可控制在360～400 m.min-1,净举力分别为1600g、2000g、2300g,探测高度可在目前基础上提高约3100m、1600m、800m。以上分析对合理控制净举力及升速提高施放高度具有实际意义。 |
| 关键词: L波段雷达;探空高度;净举力 |
| DOI： |
| 投稿时间：2018-02-06修订日期：2018-06-05 |
| 基金项目:贵阳市气象局气象科研(筑气科合201715号)。 ,吴兴洋2,吴世美1,翁玲1,何肖国3,柯利平4 |
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| Analysis of influence of net lifting force on sounding height —— Taking Guiyang sounding station as an example |
| MIN Changhong,WU Xingyang,WENG Ling,HE Xiaoguo,KE Liping |
| (Meteorological Bureau of Guiyang City,Guizhou Province,;China;Climate Center,Guizhou Province,;China;Meteorological Burea of Xifeng County,Guizhou Province,;China;Meteorological Bureau of Weining County,Guizhou Province,;China) |
| Abstract: |
| Based on the L-band data of Guiyang"s sounding station from 2014 to 2016, the factors that affect the sounding altitude of Guiyang are analyzed using the net lifting force formula, adiabatic equation and statistical analysis. The results show: ① The average speed increase of this station is> 400 m.min-1, 19, when it is higher than 07, the sounding altitude is 427m lower. ② From the ground to 850hpa, the actual rate of increase is less than the standard rate of increase of 850hpa. The actual rate of increase is greater than the standard rate of increase. Near 10hpa, the rate of increase is nearly twice that of the ground level, with an average increase of about 3% for every 1km of increase. ③ From the net force analysis point of view, neglecting the diurnal changes in business and seasonal changes, the normal cloudy cloudy less 300g ~ 500g, autumn and winter less than spring and summer 300 ~ 700g appropriate. ④ high net lifting force to reduce the detection height, usually controlled between 1600 ~ 2300g is appropriate, the average speed up can be controlled at 360 ~ 400 m.min-1, Net lifting force was 1600g, 2000g, 2300g, the detection height can be increased on the basis of the current about 3100m, 1600m, 800m. The above analysis is of practical significance to the reasonable control of the net force and the enhancement of the speed of deployment. |
| Key words: L-band radar; sounding altitude; net lifting force |
