搜索结果: 46-60 共查到“理学 air quality”相关记录83条 . 查询时间(0.075 秒)
Comparison of OMI NO2 tropospheric columns with an ensemble of global and European regional air quality models
OMI NO2 tropospheric global and European regional air quality models
2010/8/12
We present a comparison of tropospheric NO2 from OMI measurements to the median of an ensemble of Regional Air Quality (RAQ) models, and an intercomparison of the contributing RAQ models and two globa...
Eta-CMAQ air quality forecasts for O3 and related species using three different photochemical mechanisms (CB4, CB05, SAPRC-99): comparisons with measurements during the 2004 ICARTT study
Eta-CMAQ air quality forecasts three different photochemical mechanisms the 2004 ICARTT study
2010/8/12
A critical module of air quality models is the photochemical mechanism. In this study, the impact of the three photochemical mechanisms (CB4, CB05, SAPRC-99) on the Eta-Community Multiscale Air Qualit...
Automatic generation of large ensembles for air quality forecasting using the Polyphemus system
Automatic generation large ensembles air quality forecasting Polyphemus system
2010/2/5
This paper describes a method to automatically generate a large ensemble of air quality simulations. Such an ensemble may be useful for quantifying uncertainty, improving forecasts, evaluating risks, ...
A novel downscaling technique for the linkage of global and regional air quality modeling
novel downscaling technique global and regional air quality modeling
2009/12/31
Recently, downscaling global atmospheric model outputs (GCTM) for the USEPA Community Multiscale Air Quality (CMAQ) Initial (IC) and Boundary Conditions (BC) have become practical because of the rapid...
Now you see it, now you don't: Impact of temporary closures of a coal-fired power plant on air quality in the Columbia River Gorge National Scenic Area
temporary closures coal-fired power plant air quality Columbia River Gorge National Scenic Area
2009/11/9
The goal of this study is to identify major point sources that contribute to elevated particulate matter in the Columbia River Gorge, USA and to quantify their contribution. To answer this question we...
Modelling the impacts of ammonia emissions reductions on North American air quality
ammonia emissions reductions North American air quality
2009/10/9
A unified regional air-quality modelling system (AURAMS) was used to investigate the effects of reductions in ammonia emissions on regional air quality, with a focus on particulate-matter formation. T...
An operational system for the assimilation of the satellite information on wild-land fires for the needs of air quality modelling and forecasting
operational system satellite information wild-land fires
2009/9/23
This paper investigates a potential of two remotely sensed wild-land fire characteristics: 4-μm Brightness Temperature Anomaly (TA) and Fire Radiative Power (FRP) for the needs of operational chemical...
Effect of regional precursor emission controls on long-range ozone transport – Part 1: Short-term changes in ozone air quality
regional precursor emission controls long-range ozone transport ozone air quality
2009/8/25
Observations and models demonstrate that ozone and its precursors can be transported between continents and across oceans. We model the influences of 10% reductions in anthropogenic nitrogen oxide (NO...
Inverse modeling and mapping US air quality influences of inorganic PM2.5 precursor emissions using the adjoint of GEOS-Chem
US air quality influences inorganic PM2.5 precursor emissions GEOS-Chem
2009/8/25
Influences of specific sources of inorganic PM2.5 on peak and ambient aerosol concentrations in the US are evaluated using a combination of inverse modeling and sensitivity analysis. First, sulfate an...
Ozone air quality during the 2008 Beijing Olympics: effectiveness of emission restrictions
Ozone air quality 2008 Beijing Olympics effectiveness emission restrictions
2009/8/7
A series of aggressive measures was launched by the Chinese government to reduce pollutant emissions from Beijing and surrounding areas during the Olympic Games. Observations at Miyun, a rural site 10...
Mechanism reduction for the formation of secondary organic aerosol for integration into a 3-dimensional regional air quality model: α-pinene oxidation system
Mechanism reduction secondary organic aerosol α-pinene oxidation system
2009/7/15
A detailed α-pinene oxidation mechanism was reduced systematically through the successive application of five mechanism reduction techniques. The resulting reduced mechanism preserves the ozone- and o...
Assessing the regional impacts of Mexico City emissions on air quality and chemistry
Mexico City emissions air quality chemistry
2009/6/16
The impact of Mexico City (MCMA) emissions is examined by studying its effects on air quality, photochemistry, and on ozone production regimes by combining model products and aircraft observations fro...
Corrigendum to“Introduction: European Integrated Project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) – integrating aerosol research from nano to global scales”published in Atmos. Chem. Phys., 9, 2825–2841, 2009
European Integrated Project Aerosol Cloud Climate Air Quality interactions EUCAARI
2009/6/2
Corrigendum to“Introduction: European Integrated Project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) – integrating aerosol research from nano to global scales”published in Atmos. C...
Introduction: European Integrated Project on Aerosol Cloud Climate and Air Quality nteractions (EUCAARI) – integrating aerosol research from nano to global scales
EUCAARI integrating aerosol research nano global scales
2009/5/6
The European Aerosol Cloud Climate and Air Quality Interactions project EUCAARI is an EU Research Framework 6 integrated project focusing on understanding the interactions of climate and air pollution...
A Comparative Study of Air Quality Index Based on Factor Analysis and US-EPA Methods for an Urban Environment
Eclipsing effect Maximum operator concept (MOC) Principal component analysis (PCA) Variance, Ranking
2016/3/29
There are many different air quality indexes, which represent the global urban air pollution situation.
Although the index proposed by USEPA gives an overall assessment of air quality, it does not in...