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IMD's National Ozone Centre at New Delhi is designated as Secondary Regional Ozone Centre for
Regional Association II (Asia) of the World Meteorological Organisation.
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The centre maintains and controls a network of ozone monitoring stations including Maitri (Antarctica).
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Total ozone is measured with Dobson/Brewer Ozone Spectrophotometer from five locations including Maitri (Antarctica).
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Vertical ozone profiles using indigenous balloon-borne ozone-sondes are observed fortnightly at 4 stations including Maitri.
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Surface ozone measurements using electrochemical method are recorded continuously at 6 stations including Maitri.
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Ozone data is being regularly sent to World Ozone Data Centre, Canada for archival. The data is available in the Internet on: http://www.woudc.org .
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IMD is collaborating at both the national and international levels through international intercomparison of instruments, conducting experiments to study tropospheric ozone over the Indian ocean, comparing satellite data with ground truth and studying diurnal and seasonal variations in the ozone layer over Indian and Russian stations.
