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Volume 11, issue 10 | Copyright
Geosci. Model Dev., 11, 4103-4116, 2018
https://doi.org/10.5194/gmd-11-4103-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Development and technical paper 11 Oct 2018

Development and technical paper | 11 Oct 2018

Development and implementation of a new biomass burning emissions injection height scheme (BBEIH v1.0) for the GEOS-Chem model (v9-01-01)

Liye Zhu1,2,3, Maria Val Martin4,a, Luciana V. Gatti5,6, Ralph Kahn7, Arsineh Hecobian3, and Emily V. Fischer3 Liye Zhu et al.
  • 1School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou 510275, China
  • 2Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Guangzhou 510275, China
  • 3Department of Atmospheric Science, Colorado State University, Fort Collins, CO, USA
  • 4Chemical and Biological Engineering Department, The University of Sheffield, Sheffield, UK
  • 5Instituto de Pesquisas Energéticas e Nucleares (IPEN)–Comissao Nacional de Energia Nuclear (CNEN), Cidade Universitaria, São Paulo CEP, Brazil
  • 6National Institute for Spaces Research, INPE/CCST, LaGEE (Greenhouse Gas Laboratory), São José dos Campos-SP, Brazil
  • 7Climate and Radiation Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
  • anow at: Leverhulme Center for Climate Change Mitigation, Animal Plant Sciences Department, The University of Sheffield, Sheffield, UK

Abstract. Biomass burning is a significant source of trace gases and aerosols to the atmosphere, and the evolution of these species depends acutely on where they are injected into the atmosphere. GEOS-Chem is a chemical transport model driven by assimilated meteorological data that is used to probe a variety of scientific questions related to atmospheric composition, including the role of biomass burning. This paper presents the development and implementation of a new global biomass burning emissions injection scheme in the GEOS-Chem model. The new injection scheme is based on monthly gridded Multi-angle Imaging SpectroRadiometer (MISR) global plume-height stereoscopic observations in 2008. To provide specific examples of the impact of the model updates, we compare the output from simulations with and without the new MISR-based injection height scheme to several sets of observations from regions with active fires. Our comparisons with Arctic Research on the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) aircraft observations show that the updated injection height scheme can improve the ability of the model to simulate the vertical distribution of peroxyacetyl nitrate (PAN) and carbon monoxide (CO) over North American boreal regions in summer. We also compare a simulation for October 2010 and 2011 to vertical profiles of CO over the Amazon Basin. When coupled with larger emission factors for CO, a simulation that includes the new injection scheme also better matches selected observations in this region. Finally, the improved injection height improves the simulation of monthly mean surface CO over California during July 2008, a period with large fires.

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The evolution of smoke depends acutely on where the smoke is injected into the atmosphere. This paper presents the development and implementation of a new global biomass burning emissions injection scheme for GEOS-Chem. The new scheme is based on monthly gridded Multi-angle Imaging SpectroRadiometer (MISR) global plume-height stereoscopic observations in 2008.
The evolution of smoke depends acutely on where the smoke is injected into the atmosphere. This...
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