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Title: Sensitivity of the latitude of the westerly jet stream to climate forcing

Abstract

The latitude of the westerly jet stream is influenced by a variety of climate forcings. Their effects often manifest as a tug-of-war between tropical forcing, characterized by tropical upper-tropospheric warming, and polar forcing, with a signature of Antarctic stratospheric cooling or Arctic amplification. Here we present a unified forcing-feedback frame work relating different climate forcings to their forced jet changes, in which the interactions between the westerly jet and synoptic storms are synthesized by a zonal advection feedback, analogous to the feedback framework for assessing climate sensitivity. This framework is supported by a prototype feedback analysis in the atmospheric dynamical core of a climate model with diverse thermal and mechanical forcings. Our analysis indicates that the latitude of a westerly jet is most sensitive to the thermally-induced jet speed changes near the tropopause. The jet shift also displays a larger sensitivity than linearity for the equatorward shift.

Authors:
 [1];  [2];  [3]
  1. UNIVERSITY OF CALIFORNIA, LOS ANGELES
  2. University of California, Los Angeles
  3. BATTELLE (PACIFIC NW LAB)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1605422
Report Number(s):
PNNL-SA-150063
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Volume: 47; Journal Issue: 4
Country of Publication:
United States
Language:
English
Subject:
atmospheric dynamics, atmospheric variability, climate change

Citation Formats

Chen, Gang, Zhang, Pengfei, and Lu, Jian. Sensitivity of the latitude of the westerly jet stream to climate forcing. United States: N. p., 2020. Web. doi:10.1029/2019GL086563.
Chen, Gang, Zhang, Pengfei, & Lu, Jian. Sensitivity of the latitude of the westerly jet stream to climate forcing. United States. doi:10.1029/2019GL086563.
Chen, Gang, Zhang, Pengfei, and Lu, Jian. Fri . "Sensitivity of the latitude of the westerly jet stream to climate forcing". United States. doi:10.1029/2019GL086563.
@article{osti_1605422,
title = {Sensitivity of the latitude of the westerly jet stream to climate forcing},
author = {Chen, Gang and Zhang, Pengfei and Lu, Jian},
abstractNote = {The latitude of the westerly jet stream is influenced by a variety of climate forcings. Their effects often manifest as a tug-of-war between tropical forcing, characterized by tropical upper-tropospheric warming, and polar forcing, with a signature of Antarctic stratospheric cooling or Arctic amplification. Here we present a unified forcing-feedback frame work relating different climate forcings to their forced jet changes, in which the interactions between the westerly jet and synoptic storms are synthesized by a zonal advection feedback, analogous to the feedback framework for assessing climate sensitivity. This framework is supported by a prototype feedback analysis in the atmospheric dynamical core of a climate model with diverse thermal and mechanical forcings. Our analysis indicates that the latitude of a westerly jet is most sensitive to the thermally-induced jet speed changes near the tropopause. The jet shift also displays a larger sensitivity than linearity for the equatorward shift.},
doi = {10.1029/2019GL086563},
journal = {Geophysical Research Letters},
number = 4,
volume = 47,
place = {United States},
year = {2020},
month = {2}
}

Works referenced in this record:

Testing a theory for the effect of latitude on the persistence of eddy-driven jets using CMIP3 simulations: EFFECT OF LATITUDE ON JET IN GCMs
journal, August 2010

  • Barnes, Elizabeth A.; Hartmann, Dennis L.
  • Geophysical Research Letters, Vol. 37, Issue 15
  • DOI: 10.1029/2010GL044144

Isolating the Atmospheric Circulation Response to Arctic Sea Ice Loss in the Coupled Climate System
journal, March 2017


Barotropic and Baroclinic Eddy Feedbacks in the Midlatitude Jet Variability and Responses to Climate Change–Like Thermal Forcings
journal, January 2017

  • Burrows, D. Alex; Chen, Gang; Sun, Lantao
  • Journal of the Atmospheric Sciences, Vol. 74, Issue 1
  • DOI: 10.1175/JAS-D-16-0047.1

The Steady-State Atmospheric Circulation Response to Climate Change–like Thermal Forcings in a Simple General Circulation Model
journal, July 2010

  • Butler, Amy H.; Thompson, David W. J.; Heikes, Ross
  • Journal of Climate, Vol. 23, Issue 13
  • DOI: 10.1175/2010JCLI3228.1

Intercomparison and interpretation of climate feedback processes in 19 atmospheric general circulation models
journal, January 1990

  • Cess, R. D.; Potter, G. L.; Blanchet, J. P.
  • Journal of Geophysical Research, Vol. 95, Issue D10
  • DOI: 10.1029/JD095iD10p16601

Phase speed spectra and the recent poleward shift of Southern Hemisphere surface westerlies
journal, January 2007

  • Chen, Gang; Held, Isaac M.
  • Geophysical Research Letters, Vol. 34, Issue 21
  • DOI: 10.1029/2007GL031200

Sensitivity of the Latitude of the Surface Westerlies to Surface Friction
journal, August 2007

  • Chen, Gang; Held, Isaac M.; Robinson, Walter A.
  • Journal of the Atmospheric Sciences, Vol. 64, Issue 8
  • DOI: 10.1175/JAS3995.1

Phase Speed Spectra and the Latitude of Surface Westerlies: Interannual Variability and Global Warming Trend
journal, November 2008

  • Chen, Gang; Lu, Jian; Frierson, Dargan M. W.
  • Journal of Climate, Vol. 21, Issue 22
  • DOI: 10.1175/2008JCLI2306.1

Quantifying the Eddy Feedback and the Persistence of the Zonal Index in an Idealized Atmospheric Model
journal, December 2009

  • Chen, Gang; Plumb, R. Alan
  • Journal of the Atmospheric Sciences, Vol. 66, Issue 12
  • DOI: 10.1175/2009JAS3165.1

The ERA-Interim reanalysis: configuration and performance of the data assimilation system
journal, April 2011

  • Dee, D. P.; Uppala, S. M.; Simmons, A. J.
  • Quarterly Journal of the Royal Meteorological Society, Vol. 137, Issue 656
  • DOI: 10.1002/qj.828

Long-term ozone changes and associated climate impacts in CMIP5 simulations: OZONE AND ASSOCIATED CLIMATE IMPACTS
journal, May 2013

  • Eyring, V.; Arblaster, J. M.; Cionni, I.
  • Journal of Geophysical Research: Atmospheres, Vol. 118, Issue 10
  • DOI: 10.1002/jgrd.50316

Quantifying the Summertime Response of the Austral Jet Stream and Hadley Cell to Stratospheric Ozone and Greenhouse Gases
journal, July 2014


Eddy–Zonal Flow Interactions and the Persistence of the Zonal Index
journal, September 2007

  • Gerber, Edwin P.; Vallis, Geoffrey K.
  • Journal of the Atmospheric Sciences, Vol. 64, Issue 9
  • DOI: 10.1175/JAS4006.1

Equator-to-pole temperature differences and the extra-tropical storm track responses of the CMIP5 climate models
journal, July 2013


The Linear Response Function of an Idealized Atmosphere. Part I: Construction Using Green’s Functions and Applications
journal, September 2016

  • Hassanzadeh, Pedram; Kuang, Zhiming
  • Journal of the Atmospheric Sciences, Vol. 73, Issue 9
  • DOI: 10.1175/JAS-D-15-0338.1

A Proposal for the Intercomparison of the Dynamical Cores of Atmospheric General Circulation Models
journal, October 1994


Detecting Ozone- and Greenhouse Gas–Driven Wind Trends with Observational Data
journal, January 2013


The Dynamical Relationship between Subtropical and Eddy-Driven Jets
journal, June 2003


Tropopause height and zonal wind response to global warming in the IPCC scenario integrations: ZONAL WIND RESPONSE TO GLOBAL WARMING
journal, May 2007

  • Lorenz, David J.; DeWeaver, Eric T.
  • Journal of Geophysical Research: Atmospheres, Vol. 112, Issue D10
  • DOI: 10.1029/2006JD008087

Eddy–Zonal Flow Feedback in the Southern Hemisphere
journal, November 2001


A Model Investigation of Aerosol-Induced Changes in Boreal Winter Extratropical Circulation
journal, December 2011


Quantifying barotropic and baroclinic eddy feedbacks in the persistence of the Southern Annular Mode
journal, December 2014

  • Nie, Yu; Zhang, Yang; Chen, Gang
  • Geophysical Research Letters, Vol. 41, Issue 23
  • DOI: 10.1002/2014GL062210

Late Twenty-First-Century Changes in the Midlatitude Atmospheric Circulation in the CESM Large Ensemble
journal, August 2017


Feedbacks, Timescales, and Seeing Red
journal, May 2009


Storm track processes and the opposing influences of climate change
journal, August 2016

  • Shaw, T. A.; Baldwin, M.; Barnes, E. A.
  • Nature Geoscience, Vol. 9, Issue 9
  • DOI: 10.1038/ngeo2783

Revisiting the relationship between jet position, forced response, and annular mode variability in the southern midlatitudes
journal, March 2016

  • Simpson, Isla R.; Polvani, Lorenzo M.
  • Geophysical Research Letters, Vol. 43, Issue 6
  • DOI: 10.1002/2016GL067989

Southern Annular Mode Dynamics in Observations and Models. Part II: Eddy Feedbacks
journal, July 2013

  • Simpson, Isla R.; Shepherd, Theodore G.; Hitchcock, Peter
  • Journal of Climate, Vol. 26, Issue 14
  • DOI: 10.1175/JCLI-D-12-00495.1

Impact of stratospheric ozone on Southern Hemisphere circulation change: A multimodel assessment
journal, January 2010

  • Son, S. -W.; Gerber, E. P.; Perlwitz, J.
  • Journal of Geophysical Research, Vol. 115
  • DOI: 10.1029/2010JD014271

The Impact of Stratospheric Ozone Recovery on the Southern Hemisphere Westerly Jet
journal, June 2008


Interpretation of Recent Southern Hemisphere Climate Change
journal, May 2002