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Project ID: 16-4-05-4

Year: 2016

Date Started: 01/04/2016

Date Completed: 04/18/2017

Title: U.S. EPA Smoke Emissions, Chemistry, and Transport Modeling Team

Project Proposal Abstract: This U.S. Environmental Protection Agency modeling team proposes to provide expertise related to smoke emissions, modeling, and transport to support the design of future field studies focused on fire behavior. As part of that commitment, we plan to model all of the pre-burn hypothetical fire options using a coupled modeling system that includes the BlueSky emissions, the Weather Research and Forecasting (WRF) prognostic meteorological model, and the Community Multiscale Air Quality (CMAQ) 3D photochemical transport model. The CMAQ model treats emissions, atmospheric chemistry, transport, and deposition and has been used to support many regulatory (e.g., criteria pollutant standard setting, Regional Haze Rule, Exceptional Event demonstrations) and scientific assessments. Photochemical grid modeling for the pre-burn hypothetical fire scenarios will provide 3-dimensional estimates of meteorology, emissions, and transport of both primarily emitted and secondarily formed pollutants such as O3 and PM2.5. We plan to apply these models at both near-source (~1 km), local (~4 km), and regional (~12 km) scales to capture near-event and downwind plume transport and chemical evolution. Collaboration with other groups modeling at smaller (large eddy) scales provide a unique opportunity to take advantage of information gained at that scale to inform improvements in CMAQ application. It is expected that measurements from this field study will result in 1) improved emission rates for different fuel types; 2) improved emissions speciation of VOC, PM2.5, and oxidized nitrogen gases; 3) improved allocation of fire plumes spatially and temporally (by hour of the day); 4) better differentiation and treatment of smoldering to flaming components of fires; 5) better near-fire and downwind day and nighttime plume transport and chemical evolution; and 6) improved optical properties of plumes to better represent photolysis attenuation and photochemical reaction processes in CMAQ. In addition to CMAQ providing credible information for field study design, measurements made as part of the field study will provide an opportunity to evaluate numerous aspects of the emissions and photochemical modeling system that are known to be uncertain and need improvement for future regulatory and scientific modeling projects. This team intends to implement improvements in the emissions inventory, emissions model, and photochemical model developed as part of this evaluation process. This team is not requesting funding or in-kind support from the Joint Fire Science Program as participation in the process provides value for improving our fire emissions and modeling tools through collaborations with other modeling groups and the upcoming field experiments themselves. We have extensive experience in using emissions, meteorological, and photochemical models with surface and upper air measurements taken as part of recent field campaigns (e.g. CALNEX, CARES, BEARPEX, SENEX, SOAS, OZIE, others). Those efforts to pair field campaign measurements with model estimates and evaluations have led to improvements in model formulation and those experiences provided insights into field study design for the purposes of model evaluation. These experiences have also provided unique perspective on best practices regarding observation data management for the purposes of being used to support model evaluations.

Principal Investigator: Kirk R. Baker

Agency/Organization: EPA-Environmental Protection Agency

Branch or Dept: Air Quality Planning & Standards


Other Project Collaborators

Type

Name

Agency/Organization

Branch or Dept

Agreements Contact

William G. Benjey

EPA-Environmental Protection Agency

Office of Research and Development

Budget Contact

William G. Benjey

EPA-Environmental Protection Agency

Office of Research and Development

Co-Principal Investigator

Thomas E. Pierce

EPA-Environmental Protection Agency

Office of Research and Development

Collaborator/Contributor

Brian K. Gullett

EPA-Environmental Protection Agency

Office of Research and Development

Collaborator/Contributor

Tadeusz E. Kleindienst

EPA-Environmental Protection Agency

Office of Research and Development

Collaborator/Contributor

Matthew S Landis

EPA-Environmental Protection Agency

Office of Research and Development

Collaborator/Contributor

Rohit Mathur

EPA-Environmental Protection Agency

Office of Research and Development

Collaborator/Contributor

George A. Pouliot

EPA-Environmental Protection Agency

Atmospheric Sciences Modeling Division

Collaborator/Contributor

Venkatesh Rao

EPA-Environmental Protection Agency

Air Quality Planning & Standards

Collaborator/Contributor

Alan F. Vette

EPA-Environmental Protection Agency

Office of Research and Development


Project Locations

Fire Science Exchange Network

Other


Level

State

Agency

Unit

N/A


Project Deliverables

Final Report view or print

("Results presented in JFSP Final Reports may not have been peer-reviewed and should be interpreted as tentative until published in a peer-reviewed source.") Final Report view or print

("Results presented in JFSP Final Reports may not have been peer-reviewed and should be interpreted as tentative until published in a peer-reviewed source.")

There are no deliverables available for this project.

Supporting Documents

There are no supporting documents available for this project.

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