[Narccap-announce] AGU session 8419: Dynamical downscaling: methodology and assessment

Gutowski, William J [GE AT] gutowski at iastate.edu
Wed Jul 8 12:39:49 MDT 2015

Dear NARCCAP community:

The Fall AGU meeting will host a number of sessions related to downscaling of weather and climate models.  We have organized one session that will focus on the methodology used in dynamical downscaling, and the questions regarding the most effective way to drive regional models in this context.  It will also examine the tradeoff between dynamical downscaling and high resolution globally downscaled GCM approaches.  If you are working in these areas, we invite you to submit an abstract for this session.

A036: Dynamical downscaling: methodology and assessment
Session ID#: 8419
Dynamical downscaling - the use of regional models to produce high-resolution weather and climate impacts from coarse resolution global climate model (GCM) simulations - has become commonplace on today's high-end computing systems.  Still, there remains great uncertainty surrounding the design of downscaling approaches and the value added of the high-resolution solutions.  Fundamental questions exist as to whether regional climate models should simply be forced by the coarse resolution GCMs along outer domain boundaries or whether a numerical nudging within the domain is required.  Additionally, global downscaling has evolved as an alternative, using high-resolution cloud-permitting global models to simulate slices in time starting from a coarse resolution GCM simulation.  Similar to regional downscaling experiments, the question of if and how to relax to the coarse resolution simulation remains. This session invites studies of the issues surrounding the design, validation and appropriate use of dynamical downscaling methodologies for regional or global simulations.

Primary Convener:  William Putman, NASA Goddard Space Flight Center, Greenbelt, MD, United States
Conveners:  Robert Ferraro, NASA Jet Propulsion Laboratory, Pasadena, CA, United States,
            L. Ruby Leung, Pacific Northwest National Laboratory, Richland, WA, United States, and
            William J Gutowski Jr, Iowa State University, Ames, IA, United States

[Direct link to this session: https://agu.confex.com/agu/fm15/preliminaryview.cgi/Session8419 ]

William J. Gutowski, Jr.
3021 Agronomy Hall
Dept. of Geological & Atmospheric Sciences
Dept. of Agronomy
Iowa State University
Ames, Iowa  50011-1010

Tel:  1-515-294-5632
Fax: 1-515-294-2619
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