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Summer has seen dry conditions in south and wet in north

14-09-2018Source:China Meteorological News Press

According to Beijing Climate Center (BCC), since this summer (June 1 to August 14) , national average precipitation has registered 282 mm, 5% higher than normal years. North China is exposed to more precipitation while southern China is subject to less rain.

Climate in eastern China has pronounced monsoon features. In the case of summer precipitation, with the activity of monsoon system like subtropical high, dominant precipitation belts have staged stasis and oscillation between south and north. This year, rainy season in southern China starts late. Pre-flood season in South China starts 14 days later than normal years and ends 7 days earlier than normal years, with 44% less rainfall. Plum rain in South Yangtze River is 11 days later than normal years, with 32% less rainfall. Plum rain in the middle and lower reaches of the Yangtze River is 8 days later than normal years, with 38% less rain. Plum rain in Jianghuai Region is 7 days late and ends 5 days earlier, with 35% less rain.

After the rain season starts in southern China, major rain belts move northward at a quick rate. Rain season in North China starts from July 9.

So far, precipitation in eastern China has been more in northern parts and less in southern parts. This is relative to the the average precipitation within these regions in normal years. From the perspective of absolute value, rainfall in southern China evidently outstrips that in northern China, which is determined by the climate pattern in China.

Among 7 major rivers basins, the average precipitation in Haihe River, Yellow River, Songhuajiang River, and Pearl River is 18%、17%、12% and 3% higher than normal years respectively while that is 19%, 17% and 7% less than normal in Huaihe River, Liaohe River and Yangtze River. (Aug.29)

Reporter: Sun Nan

Editor: Liu Shuqiao