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DOE Atmospheric Science Program

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sharla
11 diapositives · 246 Views · Sep 11, 2014

This report presents an overview of the U.S. Department of Energy's Atmospheric Science Program's efforts towards understanding aerosol radiative forcing and its impact on climate. The long-term goal is to develop comprehensive models of atmospheric processes that affect energy-related trace chemicals and particulate matter. The report highlights partnerships, field campaigns, and research activities aimed at characterizing aerosol properties, transformations, and their climatic effects, including studies on aerosol sources, transport mechanisms, and their optical characteristics.

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  1. Department of Energy - Office of Science DOE Atmospheric Science Program Progress Report on Aerosol Radiative Forcing of Climate BERAC Meeting April 20, 2005 Peter Lunn Program Director for Atmospheric Science

  2. Program Goals and Focus Long-Term Goal---developing comprehensive understanding and representation of the atmospheric processes that control the transport, transformation, and fate of energy related trace chemicals and particulate matter. • Focus---aerosol radiative forcing of climate, i.e., aerosol chemical, microphysical, and optical properties, including their geographical and vertical distribution and the rates and mechanisms of their evolution: • Sources of particles and gaseous precursors • Transport of particles and gaseous precursors, local-to-regional scales with scientific and programmatic connections to larger scales • Concentrations of gas-phase aerosol precursors • Characterization of aerosol properties • Aerosol transformations • Atmospheric radiation (characterization of aerosol influences)

  3. Deliverables Partnerships Field Campaigns BERAC Report Working Groups Research Announcement Science Steering Committee Science Team Science Team Meeting

  4. Science Team • Aerodyne • Argonne • Boston College • Brookhaven • Cal Tech • Desert Research Inst. • EPRI • Los Alamos • Lawrence Berkeley • Livermore • MIT • NASA Langley • NCAR • NOAA CMDL • NRL • ORNL • PNNL • SUNY Albany • SUNY Old Westbury • TropoChem • UC Irvine • UCLA • UC Riverside • U Colorado • U Miami • U Minnesota

  5. Working Groups • Instrument Development • Laboratory Studies • Field Studies • Model Development and Evaluation • Gas-Particle Interaction • New Particle Formation • Aerosol Optical Properties • Cloud-Aerosol Interactions • MASE 2005 • MAX-Mex 2006 • Houston 2006 • St. Louis 2007

  6. Field Campaigns • MASE:MArine Stratus Experiment • MAX-Mex: Megacity Aerosol eXperiment – Mexico City • Houston 2006 and St. Louis 2007 Under Consideration

  7. MASE • July 2005 @ Point Reyes, California • Aerosols and Marine Stratus Clouds. • Indirect Aerosol Effects. • Cooling. • Very Large Uncertainties. • Connections between aerosol loading and reflectivity. • Connections between aerosol properties and precipitation. • Ground-based Measurements. • G-1 and Twin Otter Airborne Measurements.

  8. MAX - Mex • February-March 2006 @ Mexico City • Megacity Aerosol Exportation to the Global Environment. • Characterize the Chemical, Physical, and Optical Properties of Aerosols from a Megacity Source and the Production of SOAs and Inorganic Aerosols. • Evaluate the Rates and Yields of both Primary Particle Aging and Secondary Aerosol Conversions from a Megacity. • Extensive Ground-based Measurements. • G-1, C-130, and DC-8 Airborne Measurements.

  9. Partnerships • ARM MASE – AMF Deployment • NRL and Cal Tech MASE – CIRPAS Aircraft • NASA Langley Cost Sharing and NASA Aircraft • NSF MIRAGE-2006 and Molinas’ MCMA-2006 • NARSTO Coordination and Data Archiving • CCPP Incorporation of Models and Parameterizations • developed by ASP

  10. Program Deliverables • Models and parameterizations that effectively represent aerosol properties and processes required to compute aerosol radiative forcing of climate in large-scale climate models, together with an assessment of their accuracy and limitations. • • Relatingaerosol light scattering and absorption, including dependence on relative humidity and other controlling variables, to aerosol chemical and microphysical properties. • • Relating cloud microphysical properties and dependence on controlling variables, to concentration, and chemical and microphysical properties of pre-cloud aerosol. • • Relating evolution of aerosol composition and microphysical properties, and optical and cloud nucleating properties, to concentrations of precursor gases, properties of the pre-existing aerosol, cloud processing, and other controlling variables.

  11. Program Website and Handout • www.asp.bnl.gov • • Presentations from the January 2005 Science Team Meeting • • Scientific and logistical details of planned field campaigns • Handout • • Draft deliverables document, including specific science deliverables in each functional area of the program, in support of program deliverables