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Meeting of International atmospheric science experts was recently held at the Aryabhatta Research Institute of Observational Sciences (ARIES) in Nainital, Uttarakhand.

Host and Key Participants

The meeting was hosted by ARIES, an autonomous research institute under the Department of Science & Technology (DST). It is a center for research in astronomy, astrophysics, and atmospheric sciences.

Around 70 global experts from countries including the USA, Germany, Japan, Australia, and Belgium, participating both in-person and online.

The event was a joint annual meeting of three major international scientific networks:

• NDACC-IRWG (Network for the Detection of Atmospheric Composition Change - Infrared Working Group): A global network that provides long-term, high-quality measurements of atmospheric composition to detect trends and understand their impact on the stratosphere and troposphere.
• TCCON (Total Carbon Column Observing Network): A network of ground-based stations that measure the amount of carbon dioxide (CO2), methane (CH4), and other greenhouse gases throughout the entire column of the atmosphere. TCCON data is crucial for validating satellite measurements.
• COCCON (Collaborative Carbon Column Observing Network): A network that uses portable, standardized spectrometers to supplement TCCON, providing wider global coverage for greenhouse gas measurements.

What is FTIR Spectroscopy?

FTIR (Fourier Transform InfraRed) spectroscopy is a sophisticated ground-based technique used to measure the concentration of various gases—including potent greenhouse gases like carbon dioxide and methane—in the atmosphere with very high precision.

How does it work? => It analyzes how infrared light from the sun is absorbed as it passes through the Earth's atmosphere. Different gases absorb light at specific wavelengths, allowing scientists to identify and quantify them.

It is a widely used technique for quality control in industrial manufacturing, monitoring air and water quality, and analyzing soil to address environmental and health concerns caused by pollution. 

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Source: 

PIB