Hamara Spaces - SCCI- News_and_Events
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Air Qualiy Index and The Danger of Bias from AOD Readings - Dec 19, 2025AQI readings across east central coastal India are showing high values on several portals. Most estimates are based on satellite data. However given the low concentration of ground based monitors - can satellite data be trusted ? The common sense answer for PM25 readings is NO. What about a scientific answer ? Here is a research paper on the topic from IIT Delhi Available here Answer remains NO. Aerosol Optical Depth readings from satellites are often used along with ground based reference sources to estimate AQI by many portals. Where ground based monitors are sparse - these estimates can quickly become unreliable. Given the estimates generally use a trained computational neural network (convolutional) - most AQI portals may have no understanding of what they publish. Accurate pollution monitoring is key to risk mitigation and shutting down sources of heavy pollution. Accurate pollution monitoring is important for the economy too ! You don't want your tourism industry suffer due to inaccurate AQI advisories. States interested in a robust framework for pollution monitoring can contact SCCI for organizing a round table. |
