U.S. Department of Energy Office of Biological and Environmental Research

BER Research Highlights


Advances in High Performance Computing Improve Simulation of Extreme Precipitation Events in a Global Atmosphere Model
Published: October 05, 2009
Posted: November 06, 2009

Recent results generated by DOE-sponsored researcher Michael Wehner of Lawrence Berkeley National Laboratory demonstrate that simulations of precipitation generated from high resolution Atmospheric General Circulation Models and enabled by contemporary supercomputers produce values of comparable magnitude to high quality observations. However, at the resolutions typical of the coupled general circulation models used in the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, the precipitation return values are severely underestimated. This study is an important demonstration of how advances at the DOE computing facilities are leading to dramatic improvements in vital aspects of climate change.

Reference: Wehner, M. F., R. L. Smith, G. Bala, P. D. Duffy. 2010. "The Effect of Horizontal Resolution on Simulation of Very Extreme U.S. Precipitation Events in a Global Atmosphere Model," Climate Dynamics 34(2–3), 241–247. DOI 10.1007/s00382-009-0656-y. (Reference link)

Topic Areas:

  • Research Area: Earth and Environmental Systems Modeling
  • Cross-Cutting: Scientific Computing and SciDAC

Division: SC-23.1 Climate and Environmental Sciences Division, BER

 

BER supports basic research and scientific user facilities to advance DOE missions in energy and environment. More about BER

Recent Highlights

May 10, 2019
Quantifying Decision Uncertainty in Water Management via a Coupled Agent-Based Model
Considering risk perception can improve the representation of human decision-making processes in age [more...]

May 09, 2019
Projecting Global Urban Area Growth Through 2100 Based on Historical Time Series Data and Future Scenarios
Study provides country-specific urban area growth models and the first dataset on country-level urba [more...]

May 05, 2019
Calibrating Building Energy Demand Models to Refine Long-Term Energy Planning
A new, flexible calibration approach improved model accuracy in capturing year-to-year changes in bu [more...]

May 03, 2019
Calibration and Uncertainty Analysis of Demeter for Better Downscaling of Global Land Use and Land Cover Projections
Researchers improved the Demeter model’s performance by calibrating key parameters and establi [more...]

Apr 22, 2019
Representation of U.S. Warm Temperature Extremes in Global Climate Model Ensembles
Representation of warm temperature events varies considerably among global climate models, which has [more...]

List all highlights (possible long download time)