Grantee Research Project Results
2014 Progress Report: Linking Regional Aerosol Emission Changes with Multiple Impact Measures through Direct and Cloud-Related Forcing Estimates
EPA Grant Number: R835034Title: Linking Regional Aerosol Emission Changes with Multiple Impact Measures through Direct and Cloud-Related Forcing Estimates
Investigators: Bond, Tami C. , Streets, David G. , Liang, Xin-Zhong , Amar, Praveen
Current Investigators: Bond, Tami C. , Streets, David G. , Amar, Praveen , Liang, Xin-Zhong
Institution: University of Illinois Urbana-Champaign , Argonne National Laboratory , University of Maryland - College Park , Clean Air Task Force
Current Institution: University of Illinois Urbana-Champaign , Argonne National Laboratory , NESCAUM
EPA Project Officer: Chung, Serena
Project Period: August 1, 2011 through July 31, 2014 (Extended to July 31, 2016)
Project Period Covered by this Report: August 1, 2013 through July 31,2014
Project Amount: $899,773
RFA: Black Carbon's Role In Global To Local Scale Climate And Air Quality (2010) RFA Text | Recipients Lists
Research Category: Climate Change , Air
Objective:
Progress Summary:
Figure 1. Particle size distribution showing contributions (a) by sector and (b) by region.
Figure 2. Changes in global particle size distribution for mitigation activities in each of three sectors (upper panels
and lower left) and in the global average for all three scenarios (lower right).
Figure 3. Comparison of observed and modeled radiative fluxes. "ISCCP" is radiative fluxes from
satellite observations: "Default" is the result of aerosol distributions imported from satellite observations.
The other four are aerosol distribution from models. Error bars show standard deviation of grid boxes
over the entire continental United States.
Figure 4. Difference in radiative fluxes between simulation with hydrophilic (water-loving) BC and
hydrophobic BC.
Figure 5. An indication of emission-to-forcing linearity: the ratio between the forcing of 50% of the emissions and th forcing
of 100% of the emissions. A value of 0.5 indicates perfect linearity; lower values indicate that the first increment of emission
reduction has less effect.
Future Activities:
Emission model: None (complete).
Radiative forcing, CWRF: Diagnose causes for differences among models and with observations; complete publications.
Radiative forcing, CAM: Prepare publications describing linearity of forcing; continue to explore diagnostics for causes of differences between regions; use model experiments to investigate validity of combining forcing for component emissions (such as BC and POM) to estimate forcing from a single source. Explore indirect forcing by elevated versus surface emissions.
Communication group: Explore incentives to obtain responses from city environmental managers.
References:
Journal Articles on this Report : 1 Displayed | Download in RIS Format
Other project views: | All 10 publications | 4 publications in selected types | All 4 journal articles |
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Type | Citation | ||
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Winijkul E, Yan F, Lu Z, Streets DG, Bond TC, Zhao Y. Size-resolved global emission inventory of primary particulate matter from energy-related combustion sources. Atmospheric Environment 2015;107:137-147. |
R835034 (2014) R835034 (2015) R835034 (Final) |
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Progress and Final Reports:
Original AbstractThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.