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collection:
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nasa new
collection
nasa new
collection
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mediatype:
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image
mediatype
image
mediatype
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collection:
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nasa
collection
nasa
collection
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collection:
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nasanaturalhazards
collection
nasanaturalhazards
collection
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title:
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Smog in Tehran: Natural Hazards
title
Smog in Tehran: Natural Hazards
title
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description:
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With a population of about 12 million people, the Iranian capital, Tehran, frequently experiences severe air pollution events. An estimated 3 million cars, most of them lacking modern exhaust filters, are believed to be a major cause for the high pollution levels. Tehran is surrounded by mountains, and if there is no wind or rain, the pollution gets trapped and can cause extreme smog situations, such as the conditions the region experienced in early December 2005. One of the by-products of incomplete combustion of fossil fuel is carbon monoxide (CO). CO is measured from space by the Measurements of Pollution in the Atmosphere (MOPITT) instrument aboard the EOS Terra satellite. The image below shows CO concentrations at 700 millibars (about 3 kilometers altitude) averaged over the week from December 5-12, 2005. High CO levels, color-coded in orange, are evident over the region of Tehran. Missing data due to clouds are colored in gray.
NASA image created by Jesse Allen, Earth Observatory, using data provided by the National Center for Atmospheric Research (NCAR) and the University of Toronto www.eos.ucar.edu/mop itt/ MOPITT Teams
description
With a population of about 12 million people, the Iranian capital, Tehran, frequently experiences severe air pollution events. An estimated 3 million cars, most of them lacking modern exhaust filters, are believed to be a major cause for the high pollution levels. Tehran is surrounded by mountains, and if there is no wind or rain, the pollution gets trapped and can cause extreme smog situations, such as the conditions the region experienced in early December 2005. One of the by-products of incomplete combustion of fossil fuel is carbon monoxide (CO). CO is measured from space by the Measurements of Pollution in the Atmosphere (MOPITT) instrument aboard the EOS Terra satellite. The image below shows CO concentrations at 700 millibars (about 3 kilometers altitude) averaged over the week from December 5-12, 2005. High CO levels, color-coded in orange, are evident over the region of Tehran. Missing data due to clouds are colored in gray.
NASA image created by Jesse Allen, Earth Observatory, using data provided by the National Center for Atmospheric Research (NCAR) and the University of Toronto www.eos.ucar.edu/mop itt/ MOPITT Teams
description
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subject:
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What -- Earth
subject
What -- Earth
subject
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subject:
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What -- Terra
subject
What -- Terra
subject
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subject:
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Where -- Toronto
subject
Where -- Toronto
subject
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subject:
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What -- EOS
subject
What -- EOS
subject
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subject:
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Where -- Tehran
subject
Where -- Tehran
subject
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what:
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Earth
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what:
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Terra
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what:
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EOS
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where:
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Toronto
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where:
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Tehran
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identifier:
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iran_mop_2005346
identifier
iran_mop_2005346
identifier
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uploader:
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gwilliam@archive.org
uploader
gwilliam@archive.org
uploader
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addeddate:
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2011-07-27 06:25:10
addeddate
2011-07-27 06:25:10
addeddate
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publicdate:
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2011-07-27 06:25:10
publicdate
2011-07-27 06:25:10
publicdate
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creator:
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NASA -- NASA Image Of The Day
creator
NASA -- NASA Image Of The Day
creator
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ImageUID:
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file:/home/lunaadmin /Source_download/201 107/1/iran_mop_20053 46/iran_mop_2005346_ lrg.jpg
ImageUID
file:/home/lunaadmin /Source_download/201 107/1/iran_mop_20053 46/iran_mop_2005346_ lrg.jpg
ImageUID
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filename:
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iran_mop_2005346_lrg .jpg
filename
iran_mop_2005346_lrg .jpg
filename
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date:
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2005-12-12
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rights:
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Public Domain
rights
Public Domain
rights
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source:
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year:
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2005
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language:
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eng
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