Zhang Wenxia, an associate professor at the State Key Laboratory of Atmospheric Physics, Lanzhou Branch of China Academy of Sciences, and colleagues from the British Meteorological Office pointed out in a recent paper published in the journal Science Progress that precipitation variability will increase with climate warming. The global humid areas (mainly tropical, monsoon and mid-high latitudes) will become "wetter and wetter" because of the increase of total precipitation, the distribution of precipitation in time will become more uneven, and the fluctuation of dry-wet cycle will also become "wetter and wetter". The change rate of annual precipitation in China is between 10%-50%.
The annual variation rate is smaller in areas with abundant annual precipitation, but larger in areas with less annual precipitation. Precipitation variability is a statistic used to show the degree of precipitation change. It can be divided into absolute precipitation variability and relative precipitation variability. Generally speaking, the relative variability of precipitation is more meaningful than the absolute variability, which is often referred to as the relative variability of precipitation.
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