Estimating tropical cyclone precipitation from station observations

作者：Ren Fumin^*; Wang Yongmei; Wang Xiaoling; Li Weijing

来源：Advances in Atmospheric Sciences, 2007, 24(4): 700-711.

DOI：10.1007/s00376-007-0700-y

• tropical cyclone precipitation
• the Original Objective Method
• comparison analysis
• the Objective Synoptic Analysis Technique

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 (Do) and the TC size (DI), 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.

• 出版日期2007-7
• 单位国家气候中心; 中国科学院大气物理研究所