The January Outlook indicates much wetter than normal conditions forecast for southern China through the Pearl River Basin encompassing the Pearl’s northern tributaries; and, oceans away in Uruguay. Temperatures in Northeast China are expected to be exceptionally warmer than usual, anomalies with a return period of 40 or more years.
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The forecast through January indicates widespread surpluses south of the Yangtze River and in the Pearl River watershed. Intense surpluses will persist in Northeast China and western Sichuan, Qinghai, and Tibet. Deficits are forecast for Hubei, eastern Sichuan, Shaanxi, Henan, Shanxi, and Hebei. Deficits are expected to increase and intensify across southern Mongolia and from western Inner Mongolia, China through Xinjiang with conditions of both deficit and surplus in areas of transition. On the Korean Peninsula, moderate surpluses are forecast in the south and moderate deficits in the north.
Widespread water surpluses will emerge south of the Yangtze River and in the Pearl River watershed over the next few months and may persist through March. Surpluses are also forecast for Sichuan, Qinghai, and Tibet and may persist even longer. Deficits will increase and intensify from western Inner Mongolia through Xinjiang, and moderate to severe deficits will emerge from the North China Plain to the Yangtze River. Extreme surpluses are forecast for southern Japan, and deficits for southern North Korea.
The near-term forecast through November indicates intense surpluses in China’s Jilin and Heilongjiang Provinces; along the Yellow River; in Shaanxi, southern Gansu, and Qinghai; and in Tibet. Surpluses are also forecast for southern China and Hokkaido, Japan. Deficits reaching exceptional intensity are forecast from western Inner Mongolia across much of Xinjiang. Deficits are also expected in the Lower and Middle Yangtze River Basin, South Korea, and southwestern Japan.
Regions forecast to have significant water deficits for the 12-month period from June 2018 through May 2019 include: the US Pacific Northwest, southern Mexico, Brazil, Chile, Central and Northern Europe, northern Africa, the Middle East, Afghanistan, and southern India. Areas with a forecast of significant water surplus include: Tanzania, Kenya, Bangladesh, Myanmar, Laos, and Heilongjiang, China. This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 10 September 2018.
Through the next several months, widespread water surpluses in the center of China will shrink and downgrade, and surpluses further east in Hubei, Henan, and Anhui will transition to mild deficit. In the south, moderate to severe surpluses will increase in Yunnan and western Guangxi. Deficits will shrink in Mongolia, Inner Mongolia, and Southeast China. Moderate to extreme deficits will persist in Liaoning and Jilin in the northeast, and will emerge on the Korean Peninsula and Honshu, Japan.
Exceptional water deficits in Mongolia and Inner Mongolia through southern Xinjiang will diminish considerably, though widespread deficits of varying severity are expected. Deficits will increase in Northeast China and are expected to be intense in Liaoning, Jilin, and Heilongjiang. In Southeast China, moderate to exceptional deficits are forecast for Fujian, Guangdong, Jiangxi, Hunan, Guangxi, Hong Kong, and Taiwan. Surpluses are forecast for the Huai River Basin. Moderate deficits are forecast for much of North Korea but deficits may be severe north of Pyongyang.
Exceptional water deficits will increase in Mongolia and China through April, creating a vast stretch from Xinjiang through Inner Mongolia. Exceptional deficits will emerge in Liaoning and extreme deficits in Hunan. Deficits are forecast to spread on the Korean Peninsula and may be intense near Seoul. Conditions of intense surplus remain in the forecast from Shanghai west through the Han River (Hanjiang) watershed, and exceptional surpluses will continue to emerge in northern Sichuan and Qinghai. Moderate to severe surpluses will continue to emerge around the Gulf of Tonkin and in Hainan.
Recent exceptional deficits in Mongolia into Northeast China, on the Korean Peninsula, and in Honshu, Japan are expected to moderate in the near term – August through October – but severe to extreme deficits will continue to emerge in the northeast and moderate deficits will emerge from southern Gansu to the East China Sea. Widespread surpluses are forecast across much of southern China. After October intense deficits in northwestern China will increase in extent, in Xinjiang through Inner Mongolia and Mongolia, and deficits of lesser severity will continue to emerge in the Northeast China and in the North China Plain.
The Outlook for April 2016 is dominated by a forecast of widespread warm temperatures, particularly in South America, India, Southeast Asia, and Indonesia. Drier than normal conditions are forecast for Brazil and Southeast Asia, while exceptionally wetter conditions are expected in northern Argentina and Shanghai, China.