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Dust Plumes over Algeria and
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| Title |
Dust Plumes over Algeria and Niger |
| Description |
Plumes of dust blew through Algeria and Niger on July 31, 2007. The Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov/ ] flying on NASA's Terra [ http://terra.nasa.gov/ ] satellite took this picture the same day. In the northern- and easternmost portions of this image, buff-colored blurs of dust hide the landscape below. Where dust is absent, the ground appears in shades of tan and brown, with sharp ridges appearing in places. Where it hovers over the land, the dust plume presents a uniform color. Bright white clouds float above the plumes of dust. NASA image courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC. The Rapid Response Team provides daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?NAfrica_2_04/ ] of this region. |
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Dust Storm from the Sahara D
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| Title |
Dust Storm from the Sahara Desert |
| Description |
On February 21, 2007, a dust storm several hundred kilometers across clogged the skies over Algeria and Mali. The Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov ] on NASA's Terra [ http://terra.nasa.gov ] satellite took this picture the same day. This image shows the dust cloud over the Sahara Desert. As the dust is only slightly lighter than the sand below, the storm is easiest to discern in the east, over more variegated terrain. The Sahara Desert ranks unsurprisingly among the world's most dust-prone regions. Dust from this desert not only crosses national boundaries, but can also travel across the Atlantic Ocean to the Caribbean. NASA image by Jeff Schmaltz, MODIS Rapid Response Team, [ http://rapidfire.sci.gsfc.nasa.gov ] Goddard Space Flight Center. |
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North African Dust Plume
| Title |
North African Dust Plume |
| Description |
A dust storm crossed the border between Algeria and Mali on July 14, 2007. The Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov/ ] flying on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite took this picture the same day. In this image, the dust appears as a buff-colored blur. Because the dust plume is diffuse, its origins are not easily discerned in this image. In the south, the dust mingles with clouds, and the clouds could be associated with the same weather system that disturbed the desert dust. NASA image courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC. |
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Fires in Algeria
| Title |
Fires in Algeria |
| Description |
Fires burning in the Atlas Mountains on the northern coast of Algeria turned deadly in late August 2007. Several people were killed by forest fires that were driven rapidly across the landscape by sirocco winds (hot dry winds that blow from Africa's interior deserts toward the Mediterranean). According to news reports, thousands of soldiers were deployed to help battle the fires. Cooler weather and firefighting efforts brought many fires under control by August 31. This image shows fires (red outlines) detected around the city of Skikda by the Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov ] on NASA's Aqua [ http://aqua.nasa.gov ] satellite on August 30, 2007. Smoke creates a thick haze over the Mediterranean Sea. The large image provided above has a spatial resolution (level of detail) of 250 meters per pixel. The MODIS Rapid Response Team provides twice-daily images of the western [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?AERONET_Blida ] and eastern [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?AERONET_Lampedusa ] Algerian coastline in additional resolutions. NASA image courtesy the MODIS Rapid Response Team, [ http://rapidfire.sci.gsfc.nasa.gov ] Goddard Space Flight Center |
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Fires in Algeria
| Title |
Fires in Algeria |
| Description |
Scores of forest fires were burning in northern Algeria in late August 2007. Although much of the country is occupied by the Sahara Desert, Mediterranean forests, [ http://www.worldwildlife.org/wildworld/profiles/terrestrial/pa/pa1213_full.html ] woodlands, and chaparral occur on the Atlas Mountains that line the coast. On August 29, 2007, the Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov ] on NASA's Aqua [ http://aqua.nasa.gov ] satellite captured this image of the fires billowing thick clouds of brownish-gray smoke over the Mediterranean Sea. The smoke is so thick that the capital, Algiers, is not visible beneath it. According to news reports, dozens of families have had to evacuate, and the number of people seeking medical attention for respiratory and allergy problems has dramatically increased. The large image provided above has a spatial resolution (level of detail) of 250 meters per pixel. The MODIS Rapid Response Team provides twice-daily [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?AERONET_Blida ] images of the region in additional resolutions. NASA image by Jeff Schmaltz, MODIS Rapid Response Team, [ http://rapidfire.sci.gsfc.nasa.gov ] Goddard Space Flight Center. |
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Saharan Dust Plume
| Title |
Saharan Dust Plume |
| Description |
A dust plume hovered over the borders of Algeria, Mali, and Mauritania on July 8, 2007. The Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov/ ] flying on NASA's Terra [ http://terra.nasa.gov/ ] satellite took this picture the same day. In this image, the dust plume appears as a buff-colored arc. The plume is diffuse, making it difficult to identify the source points for this dust storm. NASA image courtesy Jeff Schmaltz, MODIS Rapid Response Team, [ http://rapidfire.sci.gsfc.nasa.gov ] Goddard Space Flight Center |
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Smoke from Fires in Greece
| Title |
Smoke from Fires in Greece |
| Description |
Besides laying waste to huge areas of forest, fires [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=14474 ] burning in Greece in August 2007 released pollutants that traveled across the Mediterranean Sea and into Africa. This image shows aerosols—tiny solid or liquid particles suspended in air—observed by the Ozone Monitoring Instrument (OMI) on NASA's Aura satellite layered on the photo-like Blue Marble [ http://earthobservatory.nasa.gov/Newsroom/BlueMarble/ ] composite image. Relatively clear air is transparent. Highest aerosol concentrations are pink. On August 26, 2007, aerosols from the fires on the southwestern coast of Greece took a fairly direct route across the Mediterranean Sea to the western part of the Libyan coast. A large pool of smoke collected over the Gulf of Sirte, off the Libyan coast. Another pocket of thick aerosols appears over Algeria. These particles are probably smoke emitted from fires burning in Algeria [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=14478 ] over a long stretch of the coastal Atlas Mountains. Farther south over the deserts of northern Africa, the light green areas of moderate aerosol amounts could be smoke or dust. On August 27, 2007, aerosols still crossed the Mediterranean Sea, but they took a more circular route. They spread southward in a clockwise direction from Greece, across the island of Crete, and concentrated thickly over eastern Libya. The other large pocket of aerosols—the pink patch hovering over the border of Libya and Algeria—may include smoke from Algeria and Greece. As on the previous day, some aerosols collected over Egypt and eastern Libya. OMI detects the amount of light of different wavelengths that the atmosphere scatters back to space, the amount of backscattered sunlight is affected by what is in the atmosphere. To make an aerosol index with OMI data, scientists compare the amount of ultraviolet (UV) light the atmosphere scatters back at given place and time to the amount of UV light that the atmosphere would scatter back if it were totally clear. You can download a KMZ file KMZ file of the smoke from Greece suitable for use with Google Earth [ http://earth.google.com/ ] for both August 26 [ http://earthobservatory.nasa.gov/NaturalHazards/Archive/Aug2007/greece_omi_2007238.kmz ] and August 27. [ http://earthobservatory.nasa.gov/NaturalHazards/Archive/Aug2007/greece_omi_2007239.kmz ] Image courtesy Omar Torres, OMI Science Team, and Colin Seftor, NASA NPP Science Team. |
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Fires in Algeria: Natural Ha
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nasa, nasanaturalhazards
Fires burning in the Atlas M
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algeria_AMO_2007242
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-08-30 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
algeria_AMO_2007242 |
|
Saharan Dust Plume: Natural
…
nasa, nasanaturalhazards
A dust plume hovered over th
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sahara_tmo_2007189
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-07-08 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
sahara_tmo_2007189 |
|
Fires in Algeria: Natural Ha
…
nasa, nasanaturalhazards
Scores of forest fires were
…
Algeria_AMO_2007241
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-08-29 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Algeria_AMO_2007241 |
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Dust Storm from the Sahara D
…
nasa, nasanaturalhazards
On February 21, 2007, a dust
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sahara_tmo_2007052
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-02-21 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
sahara_tmo_2007052 |
|
Dust Plumes over Algeria and
…
nasa, nasanaturalhazards
Plumes of dust blew through
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nafrica_tmo_2007212
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-07-31 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
nafrica_tmo_2007212 |
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North African Dust Plume: Na
…
nasa, nasanaturalhazards
A dust storm crossed the bor
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nafrica_amo_2007195
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-07-14 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
nafrica_amo_2007195 |
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Smoke Spreading from Greece
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nasa, nasaimageofthedaygalle
…
Besides laying waste to huge
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greece_omi_2007239_lrg
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-08-26 |
| creator |
NASA -- Image courtesy Omar Torres, OMI Science Team, and Colin Seftor, NASA NPP Science Team. |
| identifier |
greece_omi_2007239_lrg |
|
Smoke Spreading from Greece
…
nasa, nasaimageofthedaygalle
…
Besides laying waste to huge
…
greece_omi_2007239_lrg
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-08-26 |
| creator |
NASA -- Image courtesy Omar Torres, OMI Science Team, and Colin Seftor, NASA NPP Science Team. |
| identifier |
greece_omi_2007239_lrg |
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Forest Fires in Algeria: Ima
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nasa, nasaimageofthedaygalle
…
Scores of forest fires were
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ge_08007
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-08-29 |
| creator |
NASA -- NASA image by Jeff Schmaltz, rapidfire.sci.gsfc.nasa.gov MODIS Rapid Response Team, Goddard Space Flight Center. |
| identifier |
ge_08007 |
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Bechar Basin, Algeria: Image
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nasa, nasaimageofthedaygalle
…
The Bechar Basin of northwes
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ISS015-E-15323
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-06-27 |
| creator |
NASA -- Featured astronaut photograph eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=ISS015&roll=E&frame=15323 ISS015-E-15323 was acquired June 27, 2007, by the www.nasa.gov/mission_pages/station/expeditions/expedition15/index.html Expedition 15 crew with a Kodak 760C digital camera using a 70 mm lens. The image is provided by the ISS Crew Earth Observations experiment and the Image Science & Analysis Laboratory, Johnson Space Center. The image in this article has been cropped and enhanced to improve contrast. The spaceflight.nasa.gov/home/index.html International Space Station Program supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC eol.jsc.nasa.gov/ Gateway to Astronaut Photography of Earth. |
| identifier |
ISS015-E-15323 |
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| General Description |
International Space Station Imagery |
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