Impacts of the North Atlantic biases on the upper troposphere/lower stratosphere over the extratropical North Pacific

Joshi, Rajat; Zhang, Rong

doi:10.1038/s41612-023-00482-4

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Impacts of the North Atlantic biases on the upper troposphere/lower stratosphere over the extratropical North Pacific

2023
By Joshi, Rajat ; Zhang, Rong
Source: npj Climate and Atmospheric Science, 6(1)

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Journal Title:

npj Climate and Atmospheric Science
Personal Author:

Joshi, Rajat ; Zhang, Rong

Joshi, Rajat ; Zhang, Rong Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory)

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory) Less -
Description:

The winter upper troposphere/lower stratosphere temperature/vertical motion response over the extratropical North Pacific induced by North Atlantic changes is not well understood. Here, using robust diagnostic calculations conducted in a fully coupled high-resolution climate model, we correct the North Atlantic ocean circulation biases and show that during wintertime, the North Atlantic cold surface temperature biases lead to a warmer upper troposphere/lower stratosphere over the extratropical North Pacific. In the upper troposphere/lower stratosphere over the extratropical North Pacific, this winter warming temperature response is linked to the vertical motion response through a simple leading order thermodynamic relationship between changes in the horizontal advection and adiabatic heating. The upper troposphere/lower stratosphere vertical motion response, which is also associated with the North Atlantic induced Walker circulation response over the tropical North Pacific, can provide a rough estimation of the upper troposphere/lower stratosphere warming response over the extratropical North Pacific.
Keywords:

[+]

Atmospheric Science Environmental Chemistry Global And Planetary Change
Source:

npj Climate and Atmospheric Science, 6(1)
DOI:

https://doi.org/10.1038/s41612-023-00482-4
ISSN:

2397-3722
Publisher:

Springer Science and Business Media LLC
Document Type:

Journal Article
Funding:

Grant no. NA18OAR4320123
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Library
Main Document Checksum:

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urn:sha256:1c507bfd359d75cf1f83e7d985343c959047bbba582b99180e600264a4d3e66d
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https://repository.library.noaa.gov/view/noaa/58549/noaa_58549_DS1.pdf
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Impacts of the North Atlantic biases on the upper troposphere/lower stratosphere over the extratropical North Pacific

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