Enhanced jet stream waviness induced by suppressed tropical Pacific convection during boreal summer.

ABSTRACT: Consensus on the cause of recent midlatitude circulation changes toward a wavier manner in the Northern Hemisphere has not been reached, albeit a number of studies collectively suggest that this phenomenon is driven by global warming and associated Arctic amplification. Here, through a fingerprint analysis of various global simulations and a tropical heating-imposed experiment, we suggest that the suppression of tropical convection along the Inter Tropical Convergence Zone induced by sea surface temperature (SST) cooling trends over the tropical Eastern Pacific contributed to the increased summertime midlatitude waviness in the past 40 years through the generation of a Rossby-wave-train propagating within the jet waveguide and the reduced north-south temperature gradient. This perspective

SUBMITTER: Sun X 

PROVIDER: S-EPMC8917179 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature