Development and implementation of a new biomass burning emissions injection height scheme (BBEIH v1.0) for the GEOS-Chem model (v9-01-01)
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Geoscientific Model Development
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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.
Como referenciar
ZHU, LIYE; MARTIN, MARIA V.; GATTI, LUCIANA V.; KAHN, RALPH; HECOBIAN, ARSINEH; FISCHER, EMILY V. Development and implementation of a new biomass burning emissions injection height scheme (BBEIH v1.0) for the GEOS-Chem model (v9-01-01). Geoscientific Model Development, v. 11, n. 10, p. 4103-4116, 2018. DOI: 10.5194/gmd-11-4103-2018. Disponível em: http://repositorio.ipen.br/handle/123456789/29438. Acesso em: 30 Dec 2025.
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