Andrea Molod

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The prediction of the impact of anthropogenic land use change on the climate system hinges on the ability to properly model the interaction between the heterogeneous land surface and the atmosphere in global climate models. This paper contains a review of techniques in general use for modeling this interaction in General Circulation Models (GCMs) that have(More)
Cirrus clouds determine the radiative balance of the upper troposphere and the transport of water vapor across the tropopause. The representation of vertical wind velocity, W, in atmospheric models constitutes the largest source of uncertainty in the calculation of the cirrus formation rate. Using global atmospheric simulations with a spatial resolution of(More)
The present study extends the applicability of a statistical model for prediction of storm surge originally developed for The Battery, NY in two ways: I. the statistical model is used as a biascorrection for operationally produced dynamical surge forecasts, and II. the statistical model is applied to the region of the east coast of the U.S. susceptible to(More)
A robust connection between the drag on surface-layer winds and the stratospheric circulation is demonstrated in NASA’s Goddard Earth Observing System Chemistry–Climate Model (GEOSCCM). Specifically, an updated parameterization of roughness at the air–sea interface, in which surface roughness is increased for moderate wind speeds (4–20m s), leads to a(More)
9 A robust connection between the drag on surface-layer winds and the stratospheric circu10 lation is demonstrated in NASA’s Goddard Earth Observing System Chemistry-Climate 11 Model (GEOSCCM). Specifically, an updated parameterization of roughness at the air-sea 12 interface, in which surface roughness is increased for moderate wind speeds (4m/s to 20m/s),(More)
The prediction of the impact of anthropogenic land use change on the climate system hinges on the ability to properly model the interaction between the heterogeneous land surface and the atmosphere in global climate models. This paper contains a brief review of techniques for modeling this interaction in General Circulation Models (GCMs) that have been used(More)
Parameterization of processes that occur on length scales too small to resolve on a computational grid is a major source of uncertainty in global climate models. This study investigates the relative importance of a number of parameters used in the Goddard Earth Observing System Model, version 5 (GEOS-5), atmospheric general circulation model, focusing on(More)
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