scholarly journals Assessment on the Ozone Air Pollution in a Medium Metropolitan Area: Seville (Spain)

10.5772/18354 ◽  
2011 ◽  
Author(s):  
Jose A. ◽  
Antonio Lozano ◽  
Juan Contreras ◽  
Benito A. de la More
Keyword(s):  
Air Pollution ◽  
Metropolitan Area

scholarly journals Nitrogen Deposition in the Greater Tehran Metropolitan Area

2001 ◽  
Vol 1 ◽  
pp. 261-265 ◽  
Author(s):  
Ali Salahi ◽  
Shirin Geranfar ◽  
Soudabeh A.A. Korori
Keyword(s):  
Air Pollution ◽  
Nitrogen Deposition ◽  
Metropolitan Area ◽  
Wet Deposition ◽  
Nitrate Ion ◽  
Significant Difference

An investigation of air pollution in the Tehran metropolitan area between 1992–2000 indicated that there are significant amounts of nitrate ion (NO3–), over 30 kg/ha/year, deposited as wet deposition, compared to 13 kg/ha/year in the Chitgar Parkland near the Tehran metropolitan area. The amount of NO3–in warm seasons is twofold that of cold seasons (see Fig. 1), and there was a significant difference between cold and warm seasons (Table 1). Annual wet deposition of ammonia (NH3) was 10 kg/ha/year in the Chitgar Parkland[1].

scholarly journals Lacrimal Cytokines Assessment in Subjects Exposed to Different Levels of Ambient Air Pollution in a Large Metropolitan Area

PLoS ONE ◽  
2015 ◽  
Vol 10 (11) ◽  
pp. e0143131 ◽  
Author(s):  
Monique Matsuda ◽  
Rodolfo Bonatti ◽  
Mônica V. Marquezini ◽  
Maria L. B. Garcia ◽  
Ubiratan P. Santos ◽  
...  
Keyword(s):  
Air Pollution ◽  
Metropolitan Area ◽  
Ambient Air ◽  
Ambient Air Pollution ◽  
Large Metropolitan Area ◽  
Different Levels

scholarly journals A Bayesian Hierarchical Model for the Spatial Analysis of Carbon Monoxide Pollution Extremes in Mexico City

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
José del Carmen Jiménez-Hernández ◽  
Marisol López-Cerino ◽  
Alejandro Ivan Aguirre-Salado
Keyword(s):  
Air Pollution ◽  
Carbon Monoxide ◽  
Mexico City ◽  
Metropolitan Area ◽  
Return Period ◽  
Extreme Values ◽  
Spatial Behavior ◽  
Gev Distribution ◽  
Bayesian Hierarchical ◽  
One Year

Air pollution by carbon monoxide is a serious problem that affects many cities around the world, and the theory of extreme values has played a crucial role in the study of this issue. In this paper, we proposed a Bayesian hierarchical spatial model of extreme values to evaluate the risk of extreme events of air pollution due to carbon monoxide in the metropolitan area of Mexico City. Spatial trends are modeled through of a Gaussian process for the generalized extreme value (GEV) distribution parameters, and prediction maps are produced for each of these. The results show a marginal spatial behavior for the location, scale, and shape parameters of GEV distribution, which indicate the existence of local variations that would not be possible to model using only stationary models. A return map of the maximum concentrations with a return period of one year is obtained. We found that the return levels for a one-year return period of CO concentration above 8 ppm in the Metropolitan Area of the Valley of Mexico are concentrated in the central part of this region, and the areas with the lowest estimates are distributed in the periphery. In addition, a quantile-quantile (QQ) plot between the theoretical and empirical quantiles was provided, which showed a very good fit of data to the proposed model.

scholarly journals Diurnal variation of summer precipitation modulated by air pollution: observational evidences in the beijing metropolitan area

2020 ◽  
Vol 15 (9) ◽  
pp. 094053 ◽  
Author(s):  
Zuofang Zheng ◽  
Chun Zhao ◽  
Simone Lolli ◽  
Xiaodong Wang ◽  
Yaoting Wang ◽  
...  
Keyword(s):  
Air Pollution ◽  
Diurnal Variation ◽  
Metropolitan Area ◽  
Summer Precipitation ◽  
Beijing Metropolitan Area

642: THE EFFECTS OF AIR POLLUTION ON SEVERITY OF PNEUMONIA IN A METROPOLITAN AREA

2016 ◽  
Vol 44 (12) ◽  
pp. 237-237
Author(s):  
Jagila Wesley ◽  
Tonny Oyana ◽  
Anna Bramley ◽  
Seema Jain ◽  
John McCullers ◽  
...  
Keyword(s):  
Air Pollution ◽  
Metropolitan Area

A modelling system for predicting urban air pollution: model description and applications in the Helsinki metropolitan area

2000 ◽  
Vol 34 (22) ◽  
pp. 3723-3733 ◽  
Author(s):  
A. Karppinen ◽  
J. Kukkonen ◽  
T. Elolähde ◽  
M. Konttinen ◽  
T. Koskentalo ◽  
...  
Keyword(s):  
Air Pollution ◽  
Metropolitan Area ◽  
Urban Air Pollution ◽  
Model Description ◽  
Urban Air ◽  
Helsinki Metropolitan Area ◽  
Modelling System ◽  
Air Pollution Model
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