设为首页
加入收藏
利用TRMM资料分析2002年登陆广东的热带气旋降水分布特征
USING TRMM DATA TO ANALYSE THE PRECIPITATION DISTRIBUTIONS OF LANDFALL TROPIC CYCLONES IN GUANGDONG IN 2002
-
摘要: 用2002年3个热带气旋登陆广东的过程中自动站的降水资料, 对TRMM准全球、准实时的3 h降水估测资料进行了检验, 表明该资料与地面3 h降水有很好的相关性, 可以反映出热带气旋3 h降水变化的特征。利用该资料分析了这3个热带气旋登陆过程中不同半径、不同方向降水的时空变化特征, 并分析了不同热带气旋之间降水差异的大尺度环流背景。研究发现, 3个热带气旋登陆过程中心附近降水沿半径方向存在收缩和扩展的变化, 除了低层水汽输送的变化和地形对降水造成影响之外, “北冕”和“黄蜂”都发现热带气旋外围降水加强会导致其中心附近降水减弱, 这与以往的观测及研究成果类似。Abstract: The quality of quasi-global, near-real-time, TRMM-based precipitation estimates have been tested by automatic weather stations rainfall record in Guangdong Province, during the 3 tropical cyclones landfall periods in 2002. Results show that they have good relationship and the TRMM product can reveal the TCs 3-h temporal rain distributions. The temporal and spatial distributions of the TCs rain rate have been analysed, and the large scale circulation environment of these TCs have also been discussed. Results show that the radial distributions of the rain bands are changeable during the TCs landfall periods. Besides the low level moisture flux transmission and terrain, the inner region rain bands of TC Kammuri and Vongfong are weakened by the intensification of their outer region rain bands, that is similar to the former observation and research.
-
Key words:
- TRMM rain rate;
- Landfall TCs;
- Precipitation distributions
-
图 4 (a)“北冕”(TC0212) 降水方向-时间变化 (b) T213模式5日00 :00 UTC 1000 hPa, 925 hPa和850 hPa总的水汽通量散度场 (单位:10-5g°kg-1·s-1)
表 1 2002年登陆广东的热带气旋概况
表 2 TRMM 3 h降水资料与广东自动站降水资料的比较
-
[1] 孙建华,赵思雄. 登陆台风引发的暴雨过程之诊断研究. 大气科学,2000, 24(2): 223～237. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK200002010.htm [2] Rodgers E B, Pierce H F. Environmental influence on typhoon bobbie's precipitation distribution. Journal of Applied Meteorology, 1995,34(11): 2513～2532. doi: 10.1175/1520-0450(1995)034<2513:EIOTBP>2.0.CO;2 [3] Rodgers E B, Pierce H F. A satellite observational study of precipitation characteristics in western North Pacific tropical cyclones. Journal of Applied Meteorology, 1995, 34(12) : 2587～2599. doi: 10.1175/1520-0450(1995)034<2587:ASOSOP>2.0.CO;2 [4] 雷小途,陈联寿. 热带气旋与中尺度环流系统相互作用的研究进展. 热带气象学报,2001,17(4):452～461. http://www.cnki.com.cn/Article/CJFDTOTAL-RDQX200104014.htm [5] 丁伟钰,林爱兰. GMS5多通道数据与TRMM资料估测华南地区热带气旋降水.热带气象学报,2003,19(增刊):74～80. http://www.cnki.com.cn/Article/CJFDTOTAL-RDQX2003S1007.htm [6] 吴庆梅,程明虎,苗春生.用TRMM资料研究江淮、华南降水的微波特性.应用气象学报,2003,14(2):206～214. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=20030225&flag=1 [7] 姚展予,李万彪,朱元竞,等.用TRMM卫星微波成像仪遥感云中液态水.应用气象学报,2003,14(增刊):19～26. http://www.cnki.com.cn/Article/CJFDTOTAL-YYQX2003S1002.htm [8] Kummerow C, Olsen W S, Giglio L. A simplified scheme for obtaining precipitation and vertical hydrometeor profiles from passive microwave sensors. IEEE Trans. Geosci. Remote Sens., 1996,34(5):1213～1232. doi: 10.1109/36.536538 [9] 吕艳彬,顾雷,李亚萍,等. 用华南暴雨试验雨量资料对TRMM/TMI-85.5 GHz测雨能力的考察. 热带气象学报,2001,17(3):251～257. http://www.cnki.com.cn/Article/CJFDTOTAL-RDQX200103006.htm [10] 闫敬华,丁伟钰,陈子通,等. 热带气旋"黄蜂"动力热力特征演变的模拟分析. 热带气象学报,2003,19(增刊):12～24. http://www.cnki.com.cn/Article/CJFDTOTAL-RDQX2003S1001.htm -
下载:
图(7) / 表(2)
计量
- 摘要浏览量: 2967
- HTML全文浏览量: 824
- PDF下载量: 1279
- 被引次数: 0
