Monitoring the transport of biomass burning emissions in South America
Saulo R. Freitas,Karla Longo,Maria Assunção Faus da Silva Dias,Pedro Leite da Silva Dias,Robert B. Chatfield,E. M. Prins,Paulo Artaxo,Georg Grell,Fernando S. Recuero +8 more
TLDR
In this paper, the atmospheric transport of biomass burning emissions in the South American and African continents is monitored annually using a numerical simulation of air mass motions; they use a tracer transport capability developed within RAMS (Regional Atmospheric Modeling System) coupled to an emission model.Abstract:
The atmospheric transport of biomass burning emissions in the South American and African continents is being monitored annually using a numerical simulation of air mass motions; we use a tracer transport capability developed within RAMS (Regional Atmospheric Modeling System) coupled to an emission model. Mass conservation equations are solved for carbon monoxide (CO) and particulate material (PM2.5). Source emissions of trace gases and particles associated with biomass burning activities in tropical forest, savanna and pasture have been parameterized and introduced into the model. The sources are distributed spatially and temporally and assimilated daily using the biomass burning locations detected by remote sensing. Advection effects (at grid scale) and turbulent transport (at sub-grid scale) are provided by the RAMS parameterizations. A sub-grid transport parameterization associated with moist deep and shallow convection, not explicitly resolved by the model due to its low spatial resolution, has also been introduced. Sinks associated with the process of wet and dry removal of aerosol particles and chemical transformation of gases are parameterized and introduced in the mass conservation equation. An operational system has been implemented which produces daily 48-h numerical simulations (including 24-h forecasts) of CO and PM2.5, in addition to traditional meteorological fields. The good prediction skills of the model are demonstrated by comparisons with time series of PM2.5 measured at the surface.read more
Citations
More filters
Journal ArticleDOI
Bounding the role of black carbon in the climate system: A scientific assessment
Tami C. Bond,Sarah J. Doherty,David W. Fahey,Piers M. Forster,Terje Koren Berntsen,Benjamin DeAngelo,Mark Flanner,Steven J. Ghan,Bernd Kärcher,Dorothy Koch,Stefan Kinne,Yutaka Kondo,Patricia K. Quinn,Marcus C. Sarofim,Martin G. Schultz,Michael Schulz,Chandra Venkataraman,Hua Zhang,Shiqiu Zhang,Nicolas Bellouin,Sarath K. Guttikunda,Philip K. Hopke,Mark Z. Jacobson,Johannes W. Kaiser,Zbigniew Klimont,Ulrike Lohmann,Joshua P. Schwarz,Drew Shindell,Trude Storelvmo,Stephen G. Warren,Charles S. Zender +30 more
TL;DR: In this paper, the authors provided an assessment of black-carbon climate forcing that is comprehensive in its inclusion of all known and relevant processes and that is quantitative in providing best estimates and uncertainties of the main forcing terms: direct solar absorption; influence on liquid, mixed phase, and ice clouds; and deposition on snow and ice.
Journal Article
Couplings between changes in the climate system and biogeochemistry
Surabi Menon,Kenneth L. Denman,Guy Brasseur,Amnat Chidthaisong,Philippe Ciais,Peter M. Cox,Robert E. Dickinson,Didier Hauglustaine,Christoph Heinze,Elisabeth A. Holland,Daniel J. Jacob,Ulrike Lohmann,S. Ramachandran,Pedro Leite da Silva Dias,Steven C. Wofsy,Xiaoye Zhang +15 more
TL;DR: Denman et al. as discussed by the authors presented the Couplings between changes in the climate system and biogeochemistry Coordinating Lead Authors: Kenneth L. Denman (Canada), Guy Brasseur (USA, Germany), Amnat Chidthaisong (Thailand), Philippe Ciais (France), Peter M. Cox (UK), Robert E. Austin (USA), D.B. Wofsy (USA) and Xiaoye Zhang (China).
Journal ArticleDOI
Biomass burning emissions estimated with a global fire assimilation system based on observed fire radiative power
Johannes W. Kaiser,Angelika Heil,Meinrat O. Andreae,Angela Benedetti,N. Chubarova,L. Jones,Jean-Jacques Morcrette,M. Razinger,Martin G. Schultz,Martin Suttie,G. R. van der Werf +10 more
TL;DR: The Global Fire Assimilation System (GFASv1.0) as mentioned in this paper calculates biomass burning emissions by assimilating Fire Radiative Power (FRP) observations from the MODIS instruments onboard the Terra and Aqua satellites.
Journal ArticleDOI
Toward a unified view of the American monsoon systems
Carolina Vera,Wayne Higgins,Jorge A. Amador,Tércio Ambrizzi,René D. Garreaud,David Gochis,David S. Gutzler,Dennis P. Lettenmaier,José A. Marengo,Carlos R. Mechoso,Julia Nogués-Paegle,P. L. Silva Dias,Chidong Zhang +12 more
TL;DR: This paper reviewed recent progress in the understanding of the American monsoon systems and identified some of the future challenges that remain to improve warm season climate prediction, including new insights into moisture transport processes, description of the structure and variability of the South American low level jet, and resolution of the diurnal cycle of precipitation in the core monsoon regions.
Journal ArticleDOI
Recent developments on the South American monsoon system
José A. Marengo,Brant Liebmann,Alice M. Grimm,Vasubandhu Misra,P. L. Silva Dias,Iracema F. A. Cavalcanti,Leila M. V. Carvalho,Ernesto Hugo Berbery,Tércio Ambrizzi,Carolina Vera,A. C. Saulo,Julia Nogués-Paegle,Edward J. Zipser,Anji Seth,Lincoln M. Alves +14 more
TL;DR: Marengo et al. as discussed by the authors proposed Marengo, J. A., Centro de Previsao de Tempo e Estudos Climaticos. Instituto Nacional de Pesquisas Espaciais; Brasil
References
More filters
Journal ArticleDOI
General circulation experiments with the primitive equations
TL;DR: In this article, an extended period numerical integration of a baroclinic primitive equation model has been made for the simulation and the study of the dynamics of the atmosphere's general circulation, and the solution corresponding to external gravitational propagation is filtered by requiring the vertically integrated divergence to vanish identically.
Journal ArticleDOI
Emission of trace gases and aerosols from biomass burning
Meinrat O. Andreae,P. Merlet +1 more
TL;DR: In this article, the authors present a set of emission factors for a large variety of species emitted from biomass fires, where data were not available, they have proposed estimates based on appropriate extrapolation techniques.
Journal ArticleDOI
A Hierarchy of Turbulence Closure Models for Planetary Boundary Layers.
George L. Mellor,Tetsuji Yamada +1 more
TL;DR: In this article, the authors consider simplification based on the observation that the parameters governing the degree of anisotropy are small, and propose a simplification approach for the problem of a planetary boundary layer subject to a diurnally varying surface heat flux or surface temperature.
Journal ArticleDOI
Prognostic evaluation of assumptions used by cumulus parameterizations
TL;DR: Using a spectral-type cumulus parameterization that includes moist downdrafts within a three-dimensional mesoscale model, various disparate closure assumptions are systematically tested within the generalized framework of dynamic control, static control, and feedback as discussed by the authors.
Journal ArticleDOI
A generalized approach to parameterizing convection combining ensemble and data assimilation techniques
Georg Grell,Dezső Dévényi +1 more
TL;DR: In this article, a new convective parameterization is introduced that can make use of a large variety of assumptions previously introduced in earlier formulations, and two methods in which ensemble and data assimilation techniques may be used to find the best value to feed back to the larger scale model.