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    Academic Journals

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• What is the polar vortex and how does it influence weather? There are separate stratospheric and tropospheric planetary-scale circumpolar vortices, with differing structure, seasonality, dynamics, and impacts on extreme weather

  Authors:Darryn W. Waugh, Adam H. Sobel, and Lorenzo M. PolvaniFrom:Bulletin of the American Meteorological Society (Vol. 98, Issue 1) Peer-Reviewed

  Jan. 20174,262 words Essay 1550LThe term polar vortex has become part of the everyday vocabulary, but there is some confusion in the media, general public, and science community regarding what polar vortices are and how they are related to various...

• The weak temperature gradient approximation and balanced tropical moisture waves

  Authors:Adam H. Sobel, Johan Nilsson, and Lorenzo M. PolvaniFrom:Journal of the Atmospheric Sciences (Vol. 58, Issue 23) Peer-Reviewed

  Dec. 1, 2001378 words Article

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• The morphogenesis of brands and zonal winds in the atmospheres on the giant outer planets

  Authors:James Y.-K. Cho and Lorenzo M. PolvaniFrom:Science (Vol. 273, Issue 5273) Peer-Reviewed

  July 19, 19961,414 words Article The atmospheres of Jupiter, Saturn, Uranus, and Neptune were modeled as shallow layers of turbulent fluid overlying a smooth, spherical interior. With only the observed values of radius, rotation rate, average wind...

• Time variability and Simmons-Wallace-Branstator instability in a simple nonlinear one-layer model

  Authors:Lorenzo M. Polvani, J. Gavin Esler, and R. Alan PlumbFrom:Journal of the Atmospheric Sciences (Vol. 56, Issue 11) Peer-Reviewed

  June 1, 1999227 words Article

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• WHAT IS THE POLAR VORTEX AND HOW DOES IT INFLUENCE WEATHER? There are separate stratospheric and tropospheric planetary-scale circumpolar vortices, with differing structure, seasonality, dynamics, and impacts on extreme weather

  Authors:Darryn W. Waugh, Adam H. Sobel, and Lorenzo M. PolvaniFrom:Bulletin of the American Meteorological Society (Vol. 98, Issue 1) Peer-Reviewed

  Jan. 20174,266 words Article 1560LThe term polar vortex has become part of the everyday vocabulary, but there is some confusion in the media, general public, and science community regarding what polar vortices are and how they are related to various...

• Assessing and understanding the impact of stratospheric dynamics and variability on the earth system

  Authors:Edwin P. Gerber, Amy Butler, Natalia Calvo, Andrew Charlton-Perez, Marco Giorgetta, Elisa Manzini, et al.From:Bulletin of the American Meteorological Society (Vol. 93, Issue 6) Peer-Reviewed

  June 2012259 words Author abstract, Rep...

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• Robust winter warming over Eurasia under stratospheric sulfate geoengineering - the role of stratospheric dynamics.

  Authors:Antara Banerjee, Amy H. Butler, Lorenzo M. Polvani, Alan Robock, Isla R. Simpson, and Lantao SunFrom:Atmospheric Chemistry and Physics (Vol. 21, Issue 9) Peer-Reviewed

  May 7, 2021213 words Brief article It has been suggested that increased stratospheric sulfate aerosol loadings following large, low latitude volcanic eruptions can lead to wintertime warming over Eurasia through dynamical stratosphere-troposphere...

• Impact of the tropopause temperature on the intensity of tropical cyclones: An idealized study using a mesoscale model

  Authors:Shuguang Wang, Suzana J. Camargo, Adam H. Sobel, and Lorenzo M. PolvaniFrom:Journal of the Atmospheric Sciences (Vol. 71, Issue 11) Peer-Reviewed

  Nov. 2014207 words Author abstract, Rep...

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• Northern Hemisphere continental winter warming following the 1991 Mt. Pinatubo eruption: reconciling models and observations

  Authors:Lorenzo M. Polvani, Antara Banerjee, and Anja SchmidtFrom:Atmospheric Chemistry and Physics (Vol. 19, Issue 9) Peer-Reviewed

  May 15, 2019412 words Author abstract, Bri...

  It has been suggested, and is widely believed, that the anomalous surface warming observed over the Northern Hemisphere continents in the winter following the 1991 eruption of Mt. Pinatubo was, in fact, caused by...

• Model projections of atmospheric steering of sandy-like superstorms

  Authors:Elizabeth A. Barnes, Lorenzo M. Polvani, and Adam H. SobelFrom:Proceedings of the National Academy of Sciences of the United States (Vol. 110, Issue 38) Peer-Reviewed

  Sept. 17, 2013130 words Author abstract, Rep...

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• The Effect of a Hadley Circulation on the Propagation and Reflection of Planetary Waves in a Simple One-Layer Model

  Authors:J. GAVIN ESLER, LORENZO M. POLVANI, and R. ALAN PLUMBFrom:Journal of the Atmospheric Sciences (Vol. 57, Issue 10) Peer-Reviewed

  May 15, 2000207 words Article

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• The effect of interactive ozone chemistry on weak and strong stratospheric polar vortex events.

  Authors:Jessica Oehrlein, Gabriel Chiodo, and Lorenzo M. PolvaniFrom:Atmospheric Chemistry and Physics (Vol. 20, Issue 17) Peer-Reviewed

  Sept. 10, 2020235 words Brief article Modeling and observational studies have reported effects of stratospheric ozone extremes on Northern Hemisphere spring climate. Recent work has further suggested that the coupling of ozone chemistry and dynamics...

• The effect of topography on storm-track intensity in a relatively simple general circulation model

  Authors:Seok-Woo Son, Mingfang Ting, and Lorenzo M. PolvaniFrom:Journal of the Atmospheric Sciences (Vol. 66, Issue 2) Peer-Reviewed

  Feb. 2009201 words Author abstract, Rep...

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• On the wavelength of the Rossby waves radiated by tropical cyclones

  Authors:Kyle D. Krouse, Adam H. Sobel, and Lorenzo M. PolvaniFrom:Journal of the Atmospheric Sciences (Vol. 65, Issue 2) Peer-Reviewed

  Feb. 2008243 words Author abstract, Rep...

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• A pause in Southern Hemisphere circulation trends due to the Montreal Protocol

  Authors:Antara Banerjee, John C. Fyfe, Lorenzo M. Polvani, Darryn Waugh, and Kai-Lan ChangFrom:Nature (Vol. 579, Issue 7800) Peer-Reviewed

  Mar. 20208,802 words Report 1460LObservations show robust near-surface trends in Southern Hemisphere tropospheric circulation towards the end of the twentieth century, including a poleward shift in the mid-latitude jet.sup.1,2, a positive trend in the...

• The effect of lower stratospheric shear on baroclinic instability

  Authors:Matthew A.H. Wittman, Andrew J. Charlton, and Lorenzo M. PolvaniFrom:Journal of the Atmospheric Sciences (Vol. 64, Issue 2) Peer-Reviewed

  Feb. 2007209 words Author abstract 60L

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• Scant evidence for a volcanically forced winter warming over Eurasia following the Krakatau eruption of August 1883.

  Authors:Lorenzo M. Polvani and Suzana J. CamargoFrom:Atmospheric Chemistry and Physics (Vol. 20, Issue 22) Peer-Reviewed

  Nov. 14, 2020291 words Brief article A recent study has presented compelling new evidence suggesting that the observed Eurasian warming in the winter following the 1992 Pinatubo eruption was, in all likelihood, unrelated to the presence of volcanic aerosols...

• Distinguishing the impacts of ozone and ozone-depleting substances on the recent increase in Antarctic surface mass balance.

  Authors:Rei Chemke, Michael Previdi, Mark R. England, and Lorenzo M. PolvaniFrom:The Cryosphere (Vol. 14, Issue 11) Peer-Reviewed

  Nov. 19, 2020215 words Brief article The Antarctic surface mass balance (SMB) has global climatic impacts through its effects on global sea-level rise. The forced increase in Antarctic SMB over the second half of the 20th century was argued to stem from...

• A very large, spontaneous stratospheric sudden warming in a simple AGCM: a prototype for the Southern Hemisphere warming of 2002?

  Authors:Paul J. Kushner and Lorenzo M. PolvaniFrom:Journal of the Atmospheric Sciences (Vol. 62, Issue 3) Peer-Reviewed

  Mar. 2005162 words Author abstract

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• The coupled stratosphere-troposphere response to impulsive forcing from the troposphere

  Authors:Thomas Reichler, Paul J. Kushner, and Lorenzo M. PolvaniFrom:Journal of the Atmospheric Sciences (Vol. 62, Issue 9) Peer-Reviewed

  Sept. 2005234 words Author abstract

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