Tuesday, October 15, 2024
Sunday, October 13, 2024
Saturday, October 12, 2024
Thursday, October 10, 2024
Saturday, October 05, 2024
Precipitation (rainfall) forecast for the next 3-days (India and the Sub-Continent)
For details visit All India meteorology and air quality forecasts. Other parameters include wind speeds, wind directions, surface temperatures, ground-level temperature, and mixing heights. Updated everyday around 7PM IST.
Humor in Pollution - Cultural Climate Communication
In partnership with @hivos, we’ve curated x4 events in the @copreshub at #COP28 to highlight the vital role that culture has to play in the response to climate change >>> https://t.co/8p9VtYPy0z pic.twitter.com/oFQSwxdLHr
— Julie's Bicycle (@JuliesBicycle) December 1, 2023
Thinking Air Purifiers Will Solve Air Pollution Problem is Disingenuous and a Waste of Important Resources
There are many ideas to improve air quality. Some of them have been tossed around for a couple of decades now. An action plan the Central Pollution Control Board (CPCB) published in 1997 found its way after 20 years into the hands of the Delhi government.
These are not overnight solutions. They include improving infrastructure, urban transport and solid waste management. As a result, it requires patience, long-term planning, interdepartmental cooperation and, most importantly, joint action by all political parties, since the implementation and outcomes can have a considerable time lag. All straightforward – but not simple to pull off.
This is why technological gimmicks that promise overnight improvements without any reduction in emissions, systemic policy changes or infrastructural improvement are bound to be disingenuous, and a waste of important resources. And this is exactly what the multiple proposals to install air purifiers at intersections to reduce ambient air pollution are.
We cannot improve air pollution by sucking pollutants out of the atmosphere. The only way to control pollution is by controlling pollutants entering the atmosphere – i.e. by controlling emissions.
Full article @ theWIRE
Infograph - Air Pollution in Delhi (Forecasts) - Today/Tomorrow's Sources of PM2.5 Pollution
More more details visit https://www.delhiairquality.info
Do you want to see the daily-average PM2.5 pollution map?
Friday, October 04, 2024
Thursday, October 03, 2024
Accumulated Rainfall (Precipitation) in the last 24 hours - Gridded Daily Totals from Indian Meteorological Department
This image is sourced from Dr. Robbie Andrew @ CECIRO
Visit all India meteorology and air quality forecasts for wind speeds, wind directions, surface temperatures, ground-level temperature, and mixing heights. Updated everyday around 7PM IST.
Resource Material - Air Quality Modelling Tools and Emission Calculators
Click here or on the image to access calculators, tools, and support information for emissions and pollution modelling
Wednesday, October 02, 2024
Can We Benefit from Blaming Meteorology for Air Pollution Problems?
Mathematics relates to the “quantification” of the problem. Pollution (in the units of μg/m3) is defined as mass over volume, where mass is the emission load and volume is the amount of air present.
In the summer months, a higher volume of air means more room for lateral and vertical mixing, and vice versa for the winter months. For the same amount of emissions in all the months, concentrations are bound to be higher in the winter months and lower in the summer months. For “clean air” and lower concentrations, the requirement is either higher inversion layer height or lower emissions. It is next to impossible to alter meteorology; however, reducing emissions should be relatively easy. The infograph below is from "ABC's of Air Quality".
A rendition of Einstein's equation of relativity E=mc2 is for our case is below. Using this equation in a box model or a more complicated version (like an Eulerian equation) in an advanced chemical transport model, we can simulate the influence of the meteorological parameters on local air quality, but that doesn't solve the air pollution problem. We cannot control the wind speeds, wind directions, precipitation rates, or the mixing heights. The only logical way to reduce the right hand side is by altering the emissions on the left side (which will automatically alter the chemistry).
Basic mathematics, physics, and chemistry of air pollution are explained in this publication "Can We Vacuum Our Air Pollution Problem Using Smog Towers?"
Box model to study pollution dynamics is available as part of our sim-air family of tools.
An older poster on meteorology vs pollution is available here and more similar inforgraphics are available here.
Tuesday, October 01, 2024
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