Why did rainfall over Asian inland plateau region undergo abrupt decrease around 1999?

The Asian inland plateau (AIP) is located in the East Asian monsoon marginal areas and mainly includes Mongolia and part of northern China. There was an interdecadal change around 1998/99, with a rainfall decrease of about 16% of the climatological amount. The driving factor for this interdecadal change is suggested to be a quasi-zonal wave-like pattern over the Eurasian continent.

Powered by WPeMatico