BER launches Environmental System Science Program. Visit our new website under construction!

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

BER Research Highlights


Improved Method for Simulating Clouds in an Atmospheric Column
Published: July 01, 2014
Posted: September 22, 2014

Clouds are among the most important and uncertain aspects of the climate system. As climate changes, clouds respond in many ways (e.g., changes in altitude, phase (liquid or frozen water), and persistence). Each of these changes has a major influence on the planet’s radiative balance and on temperature and conditions at Earth’s surface. Therefore, it is critical to improve climate model simulations of clouds and their effects on climate by studying local cloud behavior without utilizing costly full Global Climate Model (GCM) runs. A newer and more promising approach is to work with pressure gradients (related to the changes in winds). This approach is called the weak-pressure-gradient (WPG) approximation and has been greatly improved by researchers at Lawrence Berkeley National Laboratory (LBNL). WPG is more successful, because it more smoothly connects the dynamics of convection and the large-scale environment. In a new study, LBNL researchers show that the standard WPG approach suffers from a long-wave resonance effect that is undesirable for single-column modeling, and they present a new WPG scheme that does not have this resonance. This study should greatly improve the utility of Single Column Models for the cloud and climate communities.

Reference: Edman, J. P., and D. M. Romps. 2014. “An Improved Weak-Pressure-Gradient Scheme for Single-Column Modeling,” Journal of the Atmospheric Sciences 71, 2415-29. DOI: 10.1175/JAS-D-13-0327.1. (Reference link)

Contact: Dorothy Koch, SC-23.1, (301) 903-0105
Topic Areas:

  • Research Area: Earth and Environmental Systems Modeling
  • Research Area: Atmospheric System Research

Division: SC-33.1 Earth 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

Mar 23, 2021
Molecular Connections from Plants to Fungi to Ants
Lipids transfer energy and serve as an inter-kingdom communication tool in leaf-cutter ants&rsqu [more...]

Mar 19, 2021
Microbes Use Ancient Metabolism to Cycle Phosphorus
Microbial cycling of phosphorus through reduction-oxidation reactions is older and more widespre [more...]

Feb 22, 2021
Warming Soil Means Stronger Microbe Networks
Soil warming leads to more complex, larger, and more connected networks of microbes in those soi [more...]

Jan 27, 2021
Labeling the Thale Cress Metabolites
New data pipeline identifies metabolites following heavy isotope labeling.

Analysis [more...]

Aug 31, 2020
Novel Bacterial Clade Reveals Origin of Form I Rubisco
Objectives

  • All plant biomass is sourced from the carbon-fixing enzyme Rub [more...]

List all highlights (possible long download time)