Skip all navigation and jump to content Jump to site navigation
NASA Logo - Goddard Space Flight Center

+ NASA Homepage

    
Goddard Space Flight Center
About MODIS News Data Tools /images2 Science Team Science Team Science Team

   + Home
ABOUT MODIS
 

October 30, 2014

October 29, 2014

October 28, 2014

October 27, 2014

October 26, 2014

October 25, 2014

October 24, 2014

 

 

January 24, 2013 - Haze over Bangladesh and India
Haze over Bangladesh and India Image used for Spacing Purposes
Satellite: Aqua
Date Acquired: 1/11/2013
Resolutions: 1km (777.1 KB)
500m (2.7 MB)
250m (6.5 MB)
Bands Used: 1,4,3
Credit: Jeff Schmaltz
MODIS Land Rapid Response Team,
NASA GSFC

As is often the case in the winter, a thick river of haze hovered over the Indo-Gangetic Plain in January 2013, casting a gray pall over northern India and Bangladesh. On January 11, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured this image of haze hugging the Himalayas and spilling out into the Ganges delta and Bengal Sea.

The haze likely resulted from a combination of urban and industrial pollution, agricultural fires, and a regional meteorological phenomenon known as a temperature inversion. Usually the air higher in the atmosphere is cooler than the air near the surface, a situation that allows warm air to rise and disperse pollutants. However, cold air often settles over northern India in the winter, trapping warmer air—and pollution—close to the surface, where it has the greatest impact on human health.

Air quality has emerged as a significant problem for India and Bangladesh in the past decade. A study conducted by Tel Aviv University researchers and published in the American Journal of Climate Change found that levels of air pollution in large Indian cities increased at some of the fastest rates in the world between 2002 and 2010—faster even than rapidly-growing Chinese cities.

Many Indian cities recorded double-digit increases in pollution over the study period. Calcutta, the third-most populous city in India, saw an 11.5 percent increase in pollution; Bangalore (not shown in the image) had the largest increase of any Indian city: 34 percent. The research was based on information collected by MODIS and by the Multi-angle Imaging SpectroRadiometer (MISR) on NASA’s Terra satellite.

FirstGov logo Privacy Policy and Important Notices NASA logo

Curator: Brandon Maccherone
NASA Official: Shannell Frazier

NASA Home Page Goddard Space Flight Center Home Page