February 21, 2022 - Aerosols over India and Bangladesh

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A broad blanket of haze hung over India and Bangladesh in mid-February
2021. The Moderate Resolution Imaging Spectroradiometer (MODIS) on
board NASA’s Terra satellite acquired a true-color image of the scene
on February 18. The thickest haze sits at the base of the Himalayas and
over Bangladesh, where it nearly obscures the ground from view. In
contrast, the air over the high elevations of the Himalayas and the
Tibetan Plateau remains crystal-clear.

Winter haze is a regular visitor in northern India, and typically is
caused by a complex mix of aerosols (tiny particles suspended in air)
and weather conditions. Winter aerosols in this region include
pollution from the densely-populated Indo-Gangetic plain, industry,
smoke, and dust blowing from the Thar Desert, which sits between India
and Pakistan. Cold seasonal temperatures contribute to the buildup of
haze as they trap the cooler air near the Earth under a high layer of
warmer air. The layer of high warm air acts like a lid, stopping the
upward flow of low-level air and thus the dispersion of aerosols and
haze.

Image Facts
Satellite: Terra
Date Acquired: 2/18/2022
Resolutions: 1km (482.6 KB), 500m (2.1 MB),
Bands Used: 1,4,3
Image Credit: MODIS Land Rapid Response Team, NASA GSFC



https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2022-02-21

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