A band of intense rainfall extends more than 1,000 km along Mexico’s west coast during Northern Hemisphere summer, constituting the core of the North American monsoon1,2. As in other tropical monsoons, this rainfall maximum is commonly thought to be
P. Synoptic climatology of the Arizona summer precipitation singularity. Bull. Amer. Meteor. Soc. 36, 329–339 (1955). Article ADS Google Scholar Krishnamurti, T. N. Tropical east-west circulations during the northern summer. J. Atmos. Sci. 28, 1342–1347 (1971). Article ADS Google ...