搜索结果: 1-15 共查到“大气化学 modeling”相关记录49条 . 查询时间(0.146 秒)
Modeling of photolysis rates over Europe: impact on chemical gaseous species and aerosols
photolysis rates Europe chemical gaseous species and aerosols
2011/2/25
This paper evaluates the impact of photolysis rate calculation on simulated European air composition and air quality. In particular, the impact of the cloud parametrisation and the impact of aerosols ...
Modeling secondary organic aerosol formation from isoprene oxidation under dry and humid conditions
secondary organic aerosol isoprene oxidation dry and humid conditions
2011/2/24
A new model for the formation of secondary organic aerosol (SOA) from isoprene was developed. This model uses surrogate molecular species (hydroxy-hydroperoxides, tetrols, methylglyceric acid, organic...
An integrated modeling study on the effects of mineral dust and sea salt particles on clouds and precipitation
mineral dust sea salt particles clouds
2011/2/24
This report addresses the effects of pollution on the development of precipitation in clean ("pristine") and polluted ("hazy") environments in the Eastern Mediterranean by using the Integrated Communi...
Using measurements for evaluation of black carbon modeling
measurements black carbon modeling
2011/1/20
The ever increasing use of air quality and climate model assessments to underpin economic, public health, and environmental policy decisions makes effective model evaluation critical. This paper discu...
Modeling natural emissions in the Community Multiscale Air Quality (CMAQ) model – Part 2: Modifications for simulating natural emissions
natural emissions the Community Multiscale Air Quality (CMAQ) model
2011/1/19
The Community Multiscale Air Quality (CMAQ) model version 4.6 has been revised with regard to the representation of chlorine (HCl, ClNO2) and sulfur (dimethylsulfide, or DMS, and H2S), and evaluated a...
Global modeling of organic aerosol: the importance of reactive nitrogen (NOx and NO3)
organic aerosol reactive nitrogen (NOx and NO3)
2010/12/20
Reactive nitrogen compounds, specifically NOx and NO3, likely influence global organic aerosol levels. To assess these interactions, GEOS-Chem, a chemical transport model, is updated to include improv...
Hygroscopicity distribution concept for measurement data analysis and modeling of aerosol particle mixing state with regard to hygroscopic growth and CCN activation
Hygroscopicity distribution concept measurement data analysis aerosol particle mixing state hygroscopic growth CCN activation
2010/8/16
This paper presents a general concept and mathematical framework of particle hygroscopicity distribution for the analysis and modeling of aerosol hygroscopic growth and cloud condensation nucleus (CCN...
Atmospheric transport of persistent semi-volatile organic chemicals to the Arctic and cold condensation in the mid-troposphere – Part 2: 3-D modeling of episodic atmospheric transport
Atmospheric transport persistent semi-volatile organic chemicals the Arctic and cold condensation the mid-troposphere episodic atmospheric transport
2010/8/16
Two 3-dimensional global atmospheric transport models for persistent organic pollutants (POPs) have been employed to investigate the association between the large-scale atmospheric motions and polewar...
Atmospheric transport of persistent semi-volatile organic chemicals to the Arctic and cold condensation in the mid-troposphere – Part 1: 2-D modeling in mean atmosphere
Atmospheric transport persistent semi-volatile organic chemicals the Arctic and cold condensation the mid-troposphere mean atmosphere
2010/8/16
In the first part of this study for revisiting the cold condensation effect on global distribution of semi-volatile organic chemicals (SVOCs), the atmospheric transport of SVOCs to the Arctic in the m...
An investigation of the sub-grid variability of trace gases and aerosols for global climate modeling
the sub-grid variability trace gases and aerosols global climate modeling
2010/8/16
One fundamental property and limitation of grid based models is their inability to identify spatial details smaller than the grid cell size. While decades of work have gone into developing sub-grid tr...
Regional-scale geostatistical inverse modeling of North American CO2 fluxes: a synthetic data study
Regional-scale geostatistical North American CO2 fluxes a synthetic data study
2010/8/16
A series of synthetic data experiments is performed to investigate the ability of a regional atmospheric inversion to estimate grid-scale CO2 fluxes during the growing season over North America. The i...
Modeling natural emissions in the Community Multiscale Air Quality (CMAQ) Model–I: building an emissions data base
Community Multiscale Air Quality an emissions data base
2010/8/13
A natural emissions inventory for the continental United States and surrounding territories is needed in order to use the US Environmental Protection Agency Community Multiscale Air Quality (CMAQ) Mod...
Ozone response to emission changes: a modeling study during the MCMA-2006/MILAGRO Campaign
Ozone response emission changes the MCMA-2006/MILAGRO Campaign
2010/8/12
The sensitivity of ozone production to precursor emissions was investigated under five different meteorological conditions in the Mexico City Metropolitan Area (MCMA) during the MCMA-2006/MILAGRO fiel...
Hydrochlorofluorocarbon and hydrofluorocarbon emissions in East Asia determined by inverse modeling
Hydrochlorofluorocarbon hydrofluorocarbon emissions East Asia inverse modeling
2010/8/12
The emissions of three hydrochlorofluorocarbons, HCFC-22 (CHClF2), HCFC-141b (CH3CCl2F) and HCFC-142b (CH3CClF2) and three hydrofluorocarbons, HFC-23 (CHF3), HFC-134a (CH2FCF3) and HFC-152a (CH3CHF2) ...
Cloud condensation nuclei in polluted air and biomass burning smoke near the mega-city Guangzhou, China – Part 1: Size-resolved measurements and implications for the modeling of aerosol particle hygroscopicity and CCN activity
Cloud condensation nuclei polluted air and biomass Size-resolved measurements and implications aerosol particle hygroscopicity CCN activity
2010/8/12
Atmospheric aerosol particles serving as Cloud Condensation Nuclei (CCN) are key elements of the hydrological cycle and climate. We measured and characterized CCN in polluted air and biomass burning s...