2011 Pakistan Floods caused by dust
and the lack of atmospheric dust:

Dust Cloud and rain cloud images from July to September.

Also see 2010 floods and the 2012 drought and 2012 floods

Copyright © 2012 by Craig C. Dremann, The Reveg Edge, P.O. Box 609, Redwood City, CA 94064 (650) 325-7333.

Images from the US Navy NRL/Monterey Aerosol Page and the Univ. of Wisconsin-Madison, Space Science and Engineering Center at http://www.ssec.wisc.edu/data/comp/latest_cmoll.gif

Each summer, a cloud of atmospheric dust acts as a wall against the monsoonal moisture, and keeps the moisture bottled up over India and from raining over western India to eastern Africa, as you can see from the Dust Surface Concentration daily images from the US Navy NRL/Monterey Aerosol Page at http://www.nrlmry.navy.mil/aerosol/index_frame.html. However, in July and from mid-August to September 2011, the wall of the Dust Cloud over Pakistan fell, allowing the monsoonal moisture to fall in torrential rains, with devistating consequences.

Also note that the monsoon moisture caused other flood events outside of Pakistan in 2011: August 29 in Yemen and KSA, then throughout November in Oman, Yemen and the KSA.

By monitoring the atmospheric dust, the lack of dust over certain areas, may help predict future flood events. Also, a positive effect could be, by controlling the atmopheric dust over these arid regions, may benefit the people living there, by helping to increase the annual rainfall.

You can see in the July 26-27 images, when the Dust Cloud moves away from Pakistan, if the monsoon moisture is bumping along that leading edge, that country becomes vulnerable to floods.

Again in August and September 2011, the Dust Cloud leaves Pakistan when the monsoon moisture is pressing on the Dust Cloud's leading edge, and makes the country vulnerable to floods. The Dust Cloud puts the entire country of Pakistan on the knife's edge, balanced each year between severe drought or torrential rains.

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See also http://www.ecoseeds.com/GONU.html for the interactions between the Cyclone GONU and the dust from Arabia, and http://www.ecoseeds.com/Saudi.html for the interactions of the Arabian rainfall, dust, vegetation, barometric pressure and dew point.



Updated July 17, 2013.