Read here. Are extreme rain events happening with greater frequency as predicted by IPCC global warming scientists and alarmists? Chinese research efforts, Gemmer et al., studied the vast Zhujiang River Basin of South China and determined that despite the huge increases in CO2 over multiple decades, there is no trend increase of precipitation.
"The Fourth Intergovernmental Panel on Climate Change (IPCC) Assessment Report (Trenberth et al., 2007), in the words of the authors, "indicates that the frequency of heavy precipitation events will very likely increase in China."...Seeking to learn how this "indication" may or may not have developed throughout South China over the period 1961-2007, Gemmer et al. focused their attention on one of China's largest river basins: the Zhujiang (Pearl River) basin...they accomplished by applying nonparametric trend tests to daily precipitation data from 192 weather stations...they write that "less than 9% of all stations in the Zhujiang River basin show significant trends in annual extreme precipitation events...noting also that "no spatial pattern can be detected for the stations with significant trends."..."we can therefore conclude that no distinct regions in the Zhujiang River basin have experienced trends for annual indices."" [Gemmer, Marco, Thomas Fischer, Tong Jiang, Buda Su, Lü Liu Liu, 2011: Journal of Climate]
Additional failed-prediction, severe-weather and peer-reviewed postings.