Estimating tropical cyclone precipitation from station observations
Estimating tropical cyclone precipitation from station observations
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DOI：
10.1007/s00376-007-0700-y
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发表时间：
2007-07
影响因子：
5.8
通讯作者：
Ren Fumin;Wang Yongmei;Wang Xiao-ling;Li Weijing
中科院分区：
文献类型：
--
作者：
Ren Fumin;Wang Yongmei;Wang Xiao-ling;Li Weijing
本文提出了一种利用台站观测资料估算热带气旋降水的客观方法。在对比分析原始客观方法（OOM）和专家主观方法（ESM）的基础上，通过对西北太平洋（WNP）热带气旋（TC）历史路径和逐日降水资料的分析，发展了用于TC降水分区的客观天气分析技术（OSAT）。OSAT作为ESM的一种客观方法，通过将OOM中的两个固定参数--TC绝对降水距离阈值（D 0）和TC尺度阈值（D1）转换为可变参数，克服了OOM中存在的主要问题，并利用CMORPH对OSAT进行了个例验证（气候预测中心MORPHing技术）每日降水量测量，这是NOAA的组合卫星降水量测量系统。这表明OSAT能够区分与不同TC或中纬度天气系统相关的同时TC降水雨带。
In this paper, an objective technique for estimating the tropical cyclone (TC) precipitation from station observations is proposed. Based on a comparison between the Original Objective Method (OOM) and the Expert Subjective Method (ESM), the Objective Synoptic Analysis Technique (OSAT) for partitioning TC precipitation was developed by analyzing the western North Pacific (WNP) TC historical track and the daily precipitation datasets. Being an objective way of the ESM, OSAT overcomes the main problems in OOM, by changing two fixed parameters in OOM, the thresholds for the distance of the absolute TC precipitation (D0) and the TC size (D1), into variable parameters.Case verification for OSAT was also carried out by applying CMORPH (Climate Prediction Center MORPHing technique) daily precipitation measurements, which is NOAA’s combined satellite precipitation measurement system. This indicates that OSAT is capable of distinguishing simultaneous TC precipitation rain-belts from those associated with different TCs or with middle-latitude weather systems.