Research

ATG 622 (2007-10)
For my PhD work, I am thinking about the hydrologic cycle in modern climate and climate change. I find it illuminating to think about the problem from the perspective of the energy budgets of the top of atmosphere, atmosphere, and surface, globally. I like to tinker with radiative feedback kernels.

In the past, I have worked on a variety of topics, ranging from fog and hurricanes to climate feedbacks to paleoclimate, using a range of models from a 0-D toy model to output from full GCMs, with many doses of probabilistic thinking.

PhD work at University of Washington - Department of Atmospheric Sciences

(pdf) Pendergrass, A.G. and D.L. Hartmann: The atmospheric energy constraint on global-mean precipitation change. Accepted at Journal of Climate.

(GRL, pdf) Pendergrass, A.G. and D.L. Hartmann, 2012: Global-mean precipitation and black carbon in AR4 simulations. Geophysical Research Letters, 39, L01703, doi:10.1029/2011GL050067.
(Or read about it here)

Masters work at University of Washington - Department of Atmospheric Sciences

(J.Clim, pdf) Pendergrass, A.G., and G.J. Hakim, D.S. Battisti and G. Roe, 2012: Coupled air-mixed-layer temperature predictability for climate reconstruction. Journal of Climate, 25, 459–472.
(Masters thesis) Paleoclimate data assimilation (David Battisti, Greg Hakim, Gerard Roe)

Extended undergraduate class project from tropical meteorology

(MWR) Pendergrass, A.G., and H.E. Willoughby, 2009: Diabatically Induced Secondary Flows in Tropical Cyclones. Part I: Quasi-Steady Forcing. Monthly Weather Review, 137, 805–821.

University of Miami - Department of Meteorology and Physical Oceanography

(Honors thesis) Climate feedbacks in the surface radiation budget (Brian Soden)

REU Marine Science in China 2005

(Project writeup) Analysis and modeling of a sea fog event over the Yellow Sea (Gang Fu)

National Weather Center REU 2004

(Project writeup) Ensemble forecast bias correction (Kim Elmore)

My Google Scholar page