气象学报2011，Vol.25Issue(4)：467-477,11.DOI:10.1007/s13351-011-0407-y
Thermodynamic Characteristics of Tropical Cyclones with RapidIntensity Change over the Coastal Waters of China
Thermodynamic Characteristics of Tropical Cyclones with RapidIntensity Change over the Coastal Waters of China
摘要
Abstract
In order to investigate the different thermodynamic mechanisms between rapid intensifying (RI) and rapid weakening (RW) tropical cyclones (TCs),the thermodynamic structures of two sets of composite TCs are analyzed based on the complete-form vertical vorticity tendency equation and the NCEP/NCAR reanalysis data.Each composite is composed of five TCs,whose intensities change rapidly over the coastal waters of China.The results show that the maximum apparent heating source Q1 exists in both the upper and lower troposphere near the RI TC center,and Q1 gets stronger at the lower level during the TC intensification period.But for the RW TC,the maximum Q1 exists at the middle level near the TC center,and Q1 gets weaker while the TC weakens.The maximum apparent moisture sink Q2 lies in the mid troposphere.Q2 becomes stronger and its peak-value height rises while TC intensifies,and vice versa.The increase of diabatic heating with height near the TC center in the mid-upper troposphere and the increase of vertical inhomogeneous heating near the TC center in the lower troposphere are both favorable to the TCs' rapid intensification; otherwise,the intensity of the TC decreases rapidly.关键词
coastal waters/tropical cyclone/rapid intensity change/thermodynamic mechanismKey words
coastal waters/tropical cyclone/rapid intensity change/thermodynamic mechanism引用本文复制引用
于玉斌,姚秀萍..Thermodynamic Characteristics of Tropical Cyclones with RapidIntensity Change over the Coastal Waters of China[J].气象学报,2011,25(4):467-477,11.基金项目
Supported by the National Natural Science Foundation of China (40875030,40730948,and 40575018) and China Meteorogical Administration Climate Change Program (CCSF2007-13). （40875030,40730948,and 40575018）
