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Archive for September 20th, 2010

Dry Mouth, Burning Eyes?

Posted by feww on September 20, 2010


Drought and Air Quality Map (August 2010)

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Drought and Air Quality Map (August 2009)

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The two maps show aerosols as measured by MODIS on NASA’s Terra satellite. Top image was acquired August 1 – 31, 2010, above image exactly a year earlier on August 1 – 31, 2009,. Source: NASA E/O. For full caption click here.

How Aerosols Penetrate Atmosphere

  • Car exhausts and industrial emissions heated by high temperatures
  • Fires
  • Dust storms
  • Volcanic eruptions
  • Drought, strong winds and heatwaves accelerate formation of chemical aerosols.

Aerosol concentrations

  • Are influenced by the weather
  • Affect weather patterns
  • Help/hinder cloud formation
  • Filter light, making regional temperatures cooler
  • Absorb energy, heating the atmosphere.

Worst Affected Areas in August 2010

  • Russia (drought and heatwaves causing fires)
  • South America (Drought over the Amazon basin causing fires; volcanic eruptions)
  • Canada (wildfires caused by drought in Canada’s boreal forest)
  • Central Africa (fires started by farmers to clear land for farming)
  • North Africa, Arabian peninsula, and southwest Asia come (caused by dust storms)
  • China, Europe, and the U.S. (industrial emissions, mainly from burning coal; vehicle exhaust)

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