Advances and Prospects of Spatiotemporal Pattern Variation of Extreme Precipitation and its Affecting Factors under the Background of Global Climate Change
Recent research have noted a worldwide increase in the occurrence of extreme-precipitation events, which has caused extensive concern of the academic and the social from all walks of life. Research different spatial scale pattern of extreme precipitation and its affecting factors,is not only an understanding of an important part of the extreme weather /climate events under the background of global climate change,but also urgently needs to reduce the urban waterlogging risk countermeasure. Therefore,in this research,the definition,threshold,diagnostic methods,spatial pattern variation and its affecting factors of extreme precipitation are reviewed. Comprehensive combing and analysis are done to the current definition of extreme precipitation threshold and the characteristics of the diagnostic methods. Extreme precipitation spatial pattern variations from the global-continents-regional scale are then comparatively analyzed. Based on these,from the affecting factors of extreme precipitation spatial pattern variation both natural climate indices and anthropogenic economic activity factors two aspects,emphatically summarized the present advances in the affecting factors of extreme precipitation spatial pattern variation research,and further to strengthen the direction of the research. Global warming quantitative influence extreme precipitation spatial pattern variation,the causes of multi-scale contrast in extreme precipitation spatial pattern variation,quantitative evaluation of the impact of urbanization to extreme precipitation spatial pattern variation and high precision model simulation to extreme precipitation spatial pattern variation will be the future research emphasis.