Air quality modeling will vary with the geographical locations as the primary pollutants will vary. How could we generalize a model for the same?
Dear Sankar,
this might be a source of information: https://waqi.info/
Best,
Sascha
There some additional webpages that have some "global" surface monitoring
https://www.esrl.noaa.gov/gmd/dv/site/
http://woudc.org/data/stations/index.php?lang=en
You can also use MODIS for PM
A very rich resource for air quality data in Germany and Switzerland can be found here. It might be a little difficult to find exactly what you are looking for.
http://www.umweltbundesamt.de/daten/luftbelastung/aktuelle-luftdaten#/start?s=q64FAA==&_k=sq886n
http://www.arias.ch/ibonline/ib_online.php
There is an effort from WHO to collect air quality data:
Global Platform on Air Quality and Health
http://www.who.int/phe/health_topics/outdoorair/global_platform/en/
You need to be more precise about your request. What type of data do you need? for what pollutants? BTW, check out this cool website for PM2.5 http://maps.who.int/airpollution/
Regarding the last part of your question: Emissions and meteorology will always be local parameters. For the dispersion process, there are a few models around that are more or less generalised. The main differences are the type of source (traffic emissions, stack emissions, area sources etc.) and the level of detail (topography, buildngs).
And then there is the political part of air quality assessments. In some countries it is a major issue, in other countries it isn't. In some countries, air quality limits are driven by health impact, in other countries, they are driven by economic feasibility. Therefore, the Actions triggered by an exceedence of air quality limtis may be entirely different.
So, I don't believe in a general model/approach that is applicable everywhere. At least, it is still far away.
This is a vague question; air quality--and some accompanying meteorological data for selected pollutants in the US--data are available at epa.gov/outdoor-air-quality data. This site have both "raw" data, formatted data, and data reports. The raw data should be available on a site-specific basis, but I have not checked. Generally there is a lag time of a year in putting the information on the web, but otherwise it can be obtained for many years on a site-specific basis.
There are scores--probably thousands--of statistical and/or chemical/physical models used to estimate ambient air quality, depending upon the pollutant of interest, its "averaging time," its modeling domain, epoch, and receptors of interest. See the above answers.
Take a look (for European countries) the EEA database
http://www.eionet.europa.eu/
Best
This links may be useful:
1. For India : http://cpcb.nic.in/RealTimeAirQualityData.php
2. Global : http://www.gaw-wdca.org/
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