Studying ozone climatology with a regional climate model: 2. Climatology

Bouchet, V. S.; Laprise, René; Torlaschi, E.; McConnell, J. C.; Plummer, David A.

doi:10.1029/1999jd900806

Cited by 20 publications

(9 citation statements)

References 14 publications

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“…To date, most air quality management applications in the US have relied on applying regional-scale photochemical modeling systems for individual pollution episodes (Harley et al, 1993;Sistla et al, 2001), single years (Tesche et al, 2006;Tong and Mauzerall, 2006;Hogrefe et al, 2006;Zhang et al, 2009), and only rarely multiple years (Bouchet et al, 1999;Pierce et al, 2010;Godowitch et al, 2010) to quantify the effect of emission control strategy on ambient ozone concentrations. In many episodic or annual applications, emissions are typically defined for two scenarios, a baseline scenario reflecting current conditions and a control scenario reflecting future conditions.…”

Section: Introductionmentioning

confidence: 99%

An analysis of long-term regional-scale ozone simulations over the Northeastern United States: variability and trends

et al. 2011

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Abstract. This study presents the results from two sets of 18-year air quality simulations over the Northeastern US performed with a regional photochemical modeling system. These two simulations utilize different sets of lateral boundary conditions, one corresponding to a time-invariant climatological vertical profile and the other derived from monthly mean concentrations extracted from archived ECHAM5-MOZART global simulations. The objective is to provide illustrative examples of how model performance in several key aspects -trends, intra-and interannual variability of groundlevel ozone, and ozone/precursor relationships -can be evaluated against available observations, and to identify key inputs and processes that need to be considered when performing and improving such long-term simulations. To this end, several methods for comparing observed and simulated trends and variability of ground level ozone concentrations, ozone precursors and ozone/precursor relationships are introduced. The application of these methods to the simulation using time-invariant boundary conditions reveals that the observed downward trend in the upper percentiles of summertime ozone concentrations is captured by the model in both directionality and magnitude. However, for lower percentiles there is a marked disagreement between observed and simulated trends. In terms of variability, the simulations using the time-invariant boundary conditions underestimate observedCorrespondence to: C. Hogrefe (chogrefe@dec.state.ny.us) inter-annual variability by 30%-50% depending on the percentiles of the distribution. The use of boundary conditions from the ECHAM5-MOZART simulations improves the representation of interannual variability but has an adverse impact on the simulated ozone trends. Moreover, biases in the global simulations have the potential to significantly affect ozone simulations throughout the modeling domain, both at the surface and aloft. The comparison of both simulations highlights the significant impact lateral boundary conditions can have on a regional air quality model's ability to simulate long-term ozone variability and trends, especially for the lower percentiles of the ozone distribution.

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Section: Introductionmentioning

confidence: 99%

An analysis of long-term regional-scale ozone simulations over the Northeastern United States: variability and trends

et al. 2011

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“…In this case, the model simulates all important physical and chemical processes involved, ranging from the emissions being released into the atmosphere, their transport, possible transformations, secondary creation of gas and PM species, and losses from the atmosphere by deposition and rainout. Typical Canadian models that could be applied for ozone changes are the CHRONOS model (Pudykiewicz et al, 1997), the MC2-AQ model (Plummer, 1999;Kaminski et al, 2000), and the Regional Climate Model (RCM) (Bouchet et al, 1999). CHRONOS is a chemical transport model that uses meteorology supplied by the Canadian mesoscale model MC2, while MC2-AQ has the oxidant chemistry online with the meteorological framework.…”

Section: Physical-based Modelingmentioning

confidence: 99%

“…In the past it has required extensive human resources to assemble all the meteorological data, run, and analyze the gigabytes of data. However, this has changed and, in particular, the use of online models offers a more self-consistent approach (e.g., Bouchet et al, 1999;Kasibhatla & Chamiedes, 2000).…”

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confidence: 98%

Report of an Expert Panel to Review the Socio-Economic Models and Related Components Supporting the Development of Canada-Wide Standards (CWS) for Particulate Matter (PM) and Ozone To the Royal Society of Canada

Adamowicz

Dales

Hale

et al. 2004

Journal of Toxicology and Environmental Health, Part B

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“…Similar ideas are also used in some other air pollution models. However, it should be mentioned here that some scientists claim that the natural emissions are greatly underestimated (see, for example, [25] [27] and [28]). Therefore, it was also useful to develop and apply some scenarios in which the natural (biogenic) emissions are varied.…”

Section: Scenarios With Human-made and Natural Emissionsmentioning

confidence: 99%

“…The changes were made by following some recommendations made in [25] [27] and [28]. One of these scenarios, the Climatic Scenario 3 combined with Increased Biogenic Emissions was compared with the Basic Scenario.…”

Section: Z Zlatev Et Almentioning

confidence: 99%

Relations between Climatic Changes and High Pollution Levels in Bulgaria

Zlatev¹,

Dimov²,

Georgiev³

2016

OJAppS

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One of the important consequences of the climatic changes is the potential danger of increasing the concentrations of some pollutants, which may cause damages to humans, animals and plants. Therefore, it is worthwhile to study carefully the impact of future climate changes on the high pollution levels. The major topic of the discussion in this paper is the increase of some ozone levels in Bulgaria, but several related topics are also discussed. The particular mathematical tool applied in this study is a large-scale air pollution model, the Unified Danish Eulerian Model (UNI-DEM), which was successfully used in several investigations related to potentially dangerous pollution levels in several European countries. This model is described by a non-linear system of partial differential equations, which is solved numerically by using (a) advanced numerical algorithms and (b) modern computer architectures. Moreover, (c) the code is parallelized and (d) the cache memories of the available computers are efficiently utilized. It is shown that in Bulgaria, as in the other European countries, the climatic changes will result in permanent increases of some quantities related to the ozone pollution. The important issue is that in our study the changes of the dangerous pollution levels are followed year by year. In this way, an attempt is made both to capture the effect of the inter-annual variations of the meteorological conditions on the levels of the ozone concentrations and to follow directly the influence of the climatic changes on the pollution levels. Moreover, the sensitivity of the pollution levels to variations of the human made (anthropogenic) and natural (biogenic) emissions is also discussed.

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Studying ozone climatology with a regional climate model: 2. Climatology

Abstract: Abstract. The Canadian Regional Climate Model with oxidant chemistry (CRCM)has

Cited by 20 publications

References 14 publications

An analysis of long-term regional-scale ozone simulations over the Northeastern United States: variability and trends

An analysis of long-term regional-scale ozone simulations over the Northeastern United States: variability and trends

Report of an Expert Panel to Review the Socio-Economic Models and Related Components Supporting the Development of Canada-Wide Standards (CWS) for Particulate Matter (PM) and Ozone To the Royal Society of Canada

Relations between Climatic Changes and High Pollution Levels in Bulgaria

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