Coupled Atmosphere–Ocean Variations on Timescales of Days Observed in the Western Tropical Pacific Warm Pool During Mid‐March 2020

Nagano, Akira; Geng, Biao; Richards, Kelvin J.; Cronin, Meghan F.; Taniguchi, Kyoko; Katsumata, Masaki; Ueki, Iwao

doi:10.1029/2022jc019032

i

Coupled Atmosphere–Ocean Variations on Timescales of Days Observed in the Western Tropical Pacific Warm Pool During Mid‐March 2020

Supporting Files

2022
By Nagano, Akira ; Geng, Biao ; Richards, Kelvin J. ; ...

Details

Journal Title:

Journal of Geophysical Research: Oceans
Personal Author:

Nagano, Akira ; Geng, Biao ; Richards, Kelvin J. ; Cronin, Meghan F. ; Taniguchi, Kyoko ; Katsumata, Masaki ; Ueki, Iwao
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PMEL (Pacific Marine Environmental Laboratory)
Description:

From 11 to 12 March 2020, we observed atmosphere and ocean variations during a temporal warming of the western tropical Pacific warm pool and the associated active convection on the equator by the R/V Mirai and unmanned surface vehicles, known as Wave Gliders. The warming, which extended the warm pool eastward at a speed of approximately 2.9 m s−1, was found to be caused mainly by high sensitivity of the temperature of the thin mixed layer to shortwave and longwave radiation flux. During the warming, westward‐propagating inertia‐gravity wave disturbances in addition to intensified northerly wind intermittently enhanced turbulent latent heat release into the atmosphere (>150 W m−2), leading to heavy rainfall from midnight to morning, so‐called diurnal dancing, in the eastern region of the warm pool. The strong air–sea coupling was related to the zonal wind variation trapped near the sea level, which caused their convergences, also intensified atmospheric convection. Subsequently (13–14 March), due to the atmospheric density stratification and wind speed changes, atmospheric disturbances radiated upward and ceased to be coupled with the ocean.
Keywords:

Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Geophysics Oceanography Space And Planetary Science Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Space And Planetary Science Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Space And Planetary Science
Source:

Journal of Geophysical Research: Oceans, 127(10)
DOI:

https://doi.org/10.1029/2022jc019032
ISSN:

2169-9275 ; 2169-9291
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by-nc-nd/4.0/
Rights Information:

CC BY-NC-ND
Compliance:

Library
Main Document Checksum:

urn:sha256:615db4cd1ad98e8dd60f331bd04840399c9168e1e2f169a4f94a6e8a7f0074df
Download URL:

https://repository.library.noaa.gov/view/noaa/59345/noaa_59345_DS1.pdf
File Type:

[PDF - 4.95 MB ]

Machine readable version (XML)

Download

ON THIS PAGE

Details Supporting Files

The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.