In this new series, we examine recent prolonged drought in the Yangtze River Basin, its impact on the affected regions, and the historical accuracy of the Water Security Indicator Model (WSIM) forecasts in East Asia.
Exceptional deficits will spread throughout the Russian Plain, northern coastal Russia, and regions near Lake Baikal. Surpluses are expected in some portions of northern Russia and north-central Kazakhstan.
Severe to exceptional deficits will occur throughout most of eastern Europe. Severe to exceptional surpluses in western Europe are expected to dissipate.
The forecast through October indicates widespread water surpluses in eastern Thailand, Cambodia, Laos, Vietnam, Philippines, Borneo, Java, Sulawesi, and Papua, Indonesia. Areas of deficits include central Sumatra and coastal Papua New Guinea.
The forecast through June indicates that water surpluses will downgrade in Southeast Asia but remain widespread, increase in the Philippines and New Guinea, and shrink in Indonesia. Deficits will emerge in Sumatra.
The forecast through September indicates that water surpluses will shrink considerably in Southeast Asia and remain widespread elsewhere, persisting with intensity in the Lesser Sunda Islands. Deficits will emerge in western Thailand and pockets of western Cambodia.
The forecast through January 2021 indicates widespread, intense water surpluses in Vietnam, Laos, Cambodia, and eastern Thailand. Surpluses of lesser intensity are expected in the Philippines and eastern Indonesia. Deficits are forecast for pockets in northern Thailand.
The forecast through December indicates that water deficits will nearly disappear. Many areas of surplus are forecast including Vietnam, Laos, eastern Cambodia, and central Indonesia. Surpluses will be exceptional on the Mekong River through Cambodia and Vietnam.