摘要
大气温度、湿度、位势高度和风等数值模式变量可以物理分解为纬圈-时间平均的对称部分和时间平均的非对称部分,以及行星尺度瞬变扰动和天气尺度瞬变扰动等四个部分.区域持续性干旱、暴雨、热浪、低温和雨雪冰冻等极端天气事件与前期及同期数值模式中的行星尺度和天气尺度大气扰动系统之间呈现出密切的关系.瞬变扰动天气图可成为预报极端天气事件的新工具.本文在归纳本期9篇原创性文章的基础上,探讨大气变量物理分解后需要进一步研究的理论问题和应用前景.
Numerical weather model variables such as temperature, humidity, pressure （geopotential height） and winds can be decomposed as four components, including the zonal timeaverage climate symmetric part, the time-average climate asymmetric part, the planetary-scale zonal-average transient symmetric anomaly, and the regional-scale transient asymmetric anomaly. Regional persistent extreme weather events such as drought, flood, heat wave, low temperature and freezing rain have closely relations with the present and previous planetary-scale and regionalscale atmospheric anomalies based on the numerical model output. The anomaly weather map may be a new tool to predict the extreme weather events. After a summery of innovation results from 9 papers published in this volume, some theoretical problems and applying foregrounds of variable physical decomposition are discussed in this paper.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2012年第5期1433-1438,共6页
Chinese Journal of Geophysics
关键词
物理分解
数值模式
极端天气事件
天气尺度扰动
创新研究
Physical decomposition, Numerical model, Extreme weather event, Regional-scaleanomaly, Weather prediction
