Eric DeWeaver
Assistant Professor
Dept. of Atmospheric and Oceanic Sciences
Center for Climatic Research
University of Wisconsin - Madison
1225 West Dayton Street
Madison, WI 53706
deweaver@aos.wisc.edu
(608) 265-5438 (phone), 262-0166 (fax)



The primary goal of my research is to understand the dynamical nature of the large-scale atmospheric circulation and its role in the climate system.  I'm interested in the fundamental mechanisms which maintain the mean circulation as well as the the processes which cause it to fluctuate and change over time.  I have been looking in particular at the climate and circulation variability associated with the Arctic/North Atlantic Oscillation and the teleconnections associated with El Nino events.  I have also begun a project intended to improve the simulation of the climate and circulation of the Arctic in global climate models.   Observations and simulations suggest that the Arctic is particularly sensitive to human-induced climate change, and understanding the mean Arctic climate and circulation is an important first step in anticipating Arctic climate change.  In addition, I'm now working to understand how climate, circulation, and hydrology are affected by global warming in simulations of human-induced climate change. 



Publications


Lorenz, D. J., E. T. DeWeaver, and D. J. Vimont, 2008: Evaporation change and global warming - the role of net radiation and relative humidity. J. Climate, submitted.

Durner, G. M., D. C. Douglas, R. M. Neilson, S. C. Amstrup, T. L. McDonald, I. Stirling, M. Mauritzen, E. W. Born, O. Wiig, E. DeWeaver, M. C. Serreze, S. E. Belikov, M. M. Holland, J. Maslanik, J. Aars, D. A. Bailey, and A. E. Derocher, 2008: Predicting 21st Century Polar Bear Habitat Distribution from Global Climate Models. Ecological Monographs, in press.

DeWeaver, E. T., E. C. Hunke, and M. M. Holland, 2008: Sensitivity of Arctic Sea Ice Thickness to Inter-Model Variations in the Surface Energy Budget. In "Arctic Sea Ice Decline: Observations, Projections, Mechanisms and Implications", E. T. DeWeaver, C. M. Bitz, and B. Tremblay, eds, in press.

DeWeaver E. T., E. C. Hunke, M. M. Holland, 2008, Comment on "On the reliability of simulated Arctic sea ice in global climate models" by I. Eisenman, N. Untersteiner, and J. S. Wettlaufer, Geophys. Res. Lett., 35, L04501, doi:10.1029/2007GL031325. abstract/download from AGU website

DeWeaver, E, 2007: Uncertainty in climate model projections of Arctic sea ice decline: an evaluation relevant to polar bears. download from USGS website

Lorenz, D. J., and E. DeWeaver, 2007: The response of the extratropical hydrological cycle to global warming.
J. Climate, 20, 3470-3484. abstract/download from AMS website

Lorenz, D. J., and E. DeWeaver, 2007: Tropopause height and the zonal wind response to global warming in the IPCC scenario integrations. J. Geophys. Research, 112, D10119, doi:10.1029/2006JD008087. abstract/download from JGR website
download preprint

DeWeaver, E., and C. M. Bitz, 2006: Atmospheric circulation and Arctic sea ice in CCSM3 at medium and high resolution. J. Climate, 19, 2415-2436. abstract/download from AMS website

DeWeaver, E., and S. Nigam, 2003: On the forcing of ENSO teleconnections by anomalous heating and cooling.
J. Climate, 17, 3225-3235. abstract/download from AMS website

DeWeaver, E., and S. Nigam, 2002: Linearity in ENSO's atmospheric response. J. Climate 15, 2446-2461. abstract/download from AMS website

Nigam, S., and E. DeWeaver, 2002: Stationary waves: structure and forcing. Encyclopedia of Atmospheric Sciences, Academic Press, Eds. J. Holton, J. Pyle, and J. Curry.

Nigam, S., C. Chung, and E. DeWeaver, 2000: ENSO diabatic heating in ECMWF and NCEP Reanalyses, and NCAR CCM3 simulation. J. Climate, 13, 3152-3171. abstract/download from AMS website

DeWeaver, E., and S. Nigam, 2000: Zonal-eddy dynamics of the North Atlantic Oscillation. J. Climate, 13, 3893-3914. abstract/download from AMS website

DeWeaver, E., and S. Nigam, 2000: Do stationary waves drive the zonal-mean jet anomalies of the Northern Winter?
J. Climate, 13, 2160-2176. abstract/download from AMS website

Nigam, S., and E. DeWeaver, 1998: Influence of orography on the extratropical response to El Nino events. J. Climate, 11, 716-734. abstract/download from AMS website

DeWeaver, E., and S. Nigam, 1997: Dynamics of zonal-mean flow assimilation and implications for winter circulation anomalies. J. Atmos. Sci., 54, 1758-1775. abstract/download from AMS website

DeWeaver, E., and S. Nigam, 1995: Influence of mountain ranges on the mid-latitude atmospheric response to
El Nino events.  Nature, 378, 706-708. abstract/download from Nature website



Links:

Ron Seely's generous and well-written article on my work with USGS for the polar bear listing decision

Weather and Climate, AOS100-2, Spring 2005

Center for Climatic Research

Program for Climate Model Diagnostics and Intercomparison

The NCAR Data Assimilation Initiative

The North Atlantic Oscillation

The Arctic Oscillation and annular modes

Arctic climatology and meteorology

Latest IPCC report on global warming

Program for Climate Model Diagnostics and intercomparison (PCMDI)

realclimate.org - a blog for climate science

The EDGCM - a classroom climate model

A grants.gov linux PureEdge Citrix ICAClient mini-howto