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Atmosphere

Atmosphere (Climatology).

Syllabus: UPSC Pre GS1: Indian & World Geography; Mains GS1

In the news

GS3 · Atmosphere

Unusual ozone-rich layer found over the North Bay of Bengal

Scientists, with ARIES Nainital as a key participant, found an unusually thick ozone layer about 21 to 23 km above the North Bay of Bengal during the NetRAD-ASMA campaign. It lasted over a day, by day and night. The study, in AGU's Earth and Space Science, links it to ozone-rich air being carried in, then sinking and compressing.

UPSC angle: Prelims: ozone layer basics.

10 Aug 2026
GS3 · Space science

First reconstruction of topside ionosphere over India

Researchers at the Indian Institute of Geomagnetism have reconstructed the topside ionosphere over India for the first time by combining COSMIC radio-occultation scale-height data with ground ionosonde bottomside profiles. The method targets better electron-density estimates up to about 1,000 km for LEO satellites, HF links and NAVIC/GPS.

UPSC angle: Prelims: ionosphere.

8 Jul 2026