Pacific decadal oscillation and ENSO forcings of northerly low-level jets in South America

Ye Mu, Charles Jones, Leila M. V. Carvalho, Lulin Xue, Changhai Liu, Qinghua Ding · 2024

Read Pacific decadal oscillation and ENSO forcings of northerly low-level jets in South America by Ye Mu, Charles Jones, Leila M. V. Carvalho, Lulin Xue, Changhai Liu, Qinghua Ding (2024) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-11618067.txt.

Description

Ye Mu and co-authors trace how Pacific climate patterns steer low-level wind jets that feed South American summer rains, in a 2024 paper. The jets run north along the eastern Andes and carry moist air. They come in three types, Central, Northern, and Andes, each tied to different flood patterns. Two slow Pacific rhythms, the El Niño cycle and a decadal swing, may set how often each type blows.

Looking back sixty-five years, the authors found both rhythms matter. The Central jet shows up more in El Niño years and warm or neutral decadal phases, bringing heavier extreme rain to the continent's south. Cool decadal phases with La Niña favour the other two jets, shifting extremes toward the western Amazon and the southeast. Some jet types also last longer under certain phases. The results aid seasonal flood outlooks.

Catalog record

CREATORYe Mu, Charles Jones, Leila M. V. Carvalho, Lulin Xue, Changhai Liu, Qinghua Ding
YEAR2024
COLLECTIONPAPERS
FORMATTXT
FILE SIZE52 KB
VERSION1.0
LICENSECC BY 4.0
RIGHTSCC BY
SOURCEEurope PMC

Source: https://europepmc.org/articles/PMC11618067

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