The Impact of Downward Wave Coupling on the Tropospheric Circulation

Lead PI: Tiffany Shaw

Unit Affiliation: Ocean and Climate Physics, Lamont-Doherty Earth Observatory (LDEO)

September 2011 - August 2016
Inactive
Global
Project Type: Research

DESCRIPTION: Investigate the dynamical nature of the impact of downward wave coupling (DWC) on the tropospheric circulation and climate in reanalysis data and its representation in a state-of-the-art seasonal forecast and climate model. The goal is to assess the potential impact for seasonal forecasts and climate prediction in the troposphere. The research will focus on the Northern Hemisphere where the stratospheric variability allows for a clear separation of months with DWC and downward zonal mean coupling.

SPONSOR:

National Science Foundation (NSF)

FUNDED AMOUNT:

$343,641

EXTERNAL COLLABORATORS:

Cooperative Institute for Research in Environmental Sciences (CIRES)

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=1129519&HistoricalAwards=false

PUBLICATIONS:

T. A. Shaw, J. Perlwitz, O. Weiner. "Troposphere-stratosphere coupling: Links to North Atlantic weather and climate, including their representation in CMIP5 models," Journal of Geophysical Research, v.119, 2014. doi:10.1002/2013JD021191

T. A. Shaw and J. Perlwitz. "The life cycle of Northern Hemisphere downward wave coupling between the stratosphere and troposphere," J. Climate, v.26, 2013, p. 1745-1763.

T. A. Shaw and J. Perlwitz. "On the Control of the Residual Circulation and Stratospheric Temperatures in the Arctic by Planetary Wave Coupling," Journal of the Atmospheric Sciences, v.71, 2014, p. 195.

E. P. Gerber, A. Butler, N. Calvo, A. Charlton-Perez, M. Giorgetta, E. Manzini, J. Perlwitz, L. M. Polvani, F. Sassi, A. A. Scaife, T. A. Shaw, S.-W. Son and S. Watanabe. "Assessing and Understanding the Impact of Stratospheric Dynamics and Variability on the Earth System," Bulletin of the American Meteorological Society, v.93, 2012, p. 845.

E. Dunn-Sigouin and T. A. Shaw. "Comparing and contrasting extreme stratospheric events, including their coupling to the tropospheric circulation," Journal of Geophysical Research, 2015. doi:10.1002/2014JD022116

A. J. Charlton-Perez, and 27 co-authors including T. A. Shaw. "On the lack of stratospheric dynamical variability in low-top versions of the CMIP5 models," J. of Geophys. Res., v.118, 2013, p. 2494-2505. doi:10.1002/jgrd.50125

KEYWORDS

climate models climate prediction downward zonal mean coupling downward wave coupling ocean and climate physics tropospheric circulation

THEMES

Modeling and Adapting to Future Climate