The Global Climate for June to August 1990: Drought Returns to Sub-Saharan West Africa and Warm Southern Oscillation Episode Conditions Develop in the Central Pacific

Abstract

Although the general monsoon circulation evolved relatively normally over most of the globe, dry conditions returned to sub-Saharan West Africa. The Northern Hemisphere summer surface temperature continued to be above normal over most land areas, but in general the anomolies were less extreme. The equatorial sea surface temperatures continued to move toward warm episode Southern Oscillation conditions in the central Pacific, but without an accompanying warming in the traditional eastern Pacific El Nino areas.