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Water vapor is the dominant greenhouse gas in our atmosphere. The greenhouse effect of water vapor is enhanced at high altitudes, where the air is significantly colder than the ground, and increase...
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Mean Clear Air Precipitable Water, 500mb to top-of-atmosphere, January and July 2003
Mean Clear Air Precipitable Water, 500mb to top-of-atmosphere, January and July 2003
The Atmospheric Infrared Sounder, AIRS, was launched aboard the Aqua Spacecraft in 2002 as part of NASA's Earth Observing System Afternoon Constellation of satellites known as the 'A-Train.
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Arctic Carbon Dioxide, March 23, 2010
Arctic Carbon Dioxide, March 23, 2010
This animation shows how light energy is collected by the optics system on the Atmospheric Infrared Sounder (AIRS) instrument and digitized.
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This animation shows how light energy is collected by the optics system on the Atmospheric Infrared Sounder (AIRS) instrument and digitized.
Light Travels Through AIRS Optics
In order to validate the performance of the AIRS zonal cloud frequency and amount, we compare the zonal cloud frequency from CloudSat and CALIPSO (two left panels). Then, we derive the frequency of...
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Zonal Height Cross-Sectional Averages, AIRS, CloudSat, and CALIPSO
Zonal Height Cross-Sectional Averages, AIRS, CloudSat, and CALIPSO
This image represents the total precipitable water vapor for May, 2009 as observed by AIRS, the Atmospheric Infrared Sounder (AIRS) on NASA's Aqua satellite.
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Global Total Precipitable Water Vapor for May 2009
Global Total Precipitable Water Vapor for May 2009
The Atmospheric Infrared Sounder (AIRS) instrument in the assembly facility, 1999. 
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AIRS instrument
AIRS instrument
Tropical Storm Isidore was born in mid-September north of Venezuela.
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Flooding Resulting From Hurricane Isidore: Comparing data from Sept 12 and 28, 2002
Flooding Resulting From Hurricane Isidore: Comparing data from Sept 12 and 28, 2002
Artist's concept of NASA's Aqua satellite launched May 4, 2002.
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NASA's Aqua satellite
NASA's Aqua satellite
In this animation, the field of view of the Atmospheric Infrared Sounder (AIRS) instrument onboard NASA's Aqua spacecraft is represented by the blue beam as it sweeps back and forth through the atm...
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AIRS Collects Data and Creates a Temperature Profile
AIRS Collects Data and Creates a Temperature Profile
This image is the AIRS-retrieved global tropospheric methane for August 2005.
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Global Tropospheric Methane for August 2005
Global Tropospheric Methane for August 2005
NASA's Aqua satellite in high bay
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NASA's Aqua satellite in high bay
NASA's Aqua satellite in high bay
Atmospheric Infrared Sounder instrument sections
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Atmospheric Infrared Sounder instrument sections
Atmospheric Infrared Sounder instrument sections
The continuing heat wave in the United States in July 2011 has broken temperature records in many locations, killed dozens and seen nearly half of all Americans under heat advisories at its peak.
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Evolution of U.S. 2011 Heat Wave
Evolution of U.S. 2011 Heat Wave
In late July 2010, flooding caused by heavy monsoon rains began in several regions of Pakistan, including the Khyber Pakhtunkhwa, Sindh, Punjab and parts of Baluchistan.
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Extent of Pakistan Flooding
Extent of Pakistan Flooding
CloudSat-AIRS cloud top height differences as a function of AIRS cloud fraction are shown. Since the ability of AIRS to characterize cloud amount and height is cloud-type dependent, differences in ...
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CloudSat-AIRS cloud top height differences as a function of AIRS cloud fraction and CloudSat cloud type
CloudSat-AIRS cloud top height differences as a function of AIRS cloud fraction and CloudSat cloud type
Hurricane Ivan is the most powerful hurricane to hit the Caribbean in 10 years.
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Hurricane Ivan as Observed by AIRS 2004
Hurricane Ivan as Observed by AIRS 2004
NASA's Earth observing satellite, Aqua, successfully launched at 2:55 a.m. PDT on ay 4, 2002.
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NASA Aqua Satellite Launch
NASA Aqua Satellite Launch
Zonal average AIRS cloud frequency and cloud fraction for a total of 5 days in late 2006. Latitude bins are 5 degrees in width and height bins are 0.5 km in depth. 
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Zonal Average AIRS Cloud Frequency and Cloud Fraction
Zonal Average AIRS Cloud Frequency and Cloud Fraction
NASA's Aqua satellite in high bay, prepare to hoist
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NASA's Aqua satellite in high bay, prepare to hoist
NASA's Aqua satellite in high bay, prepare to hoist
NASA's Earth observing satellite, Aqua, successfully launched at 2:55 a.m. PDT on ay 4, 2002.
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NASA Aqua Satellite Launch
NASA Aqua Satellite Launch
NASA’s Atmospheric Infrared Sounder (AIRS) captured a series of images of Hurricanes Idalia before landfall in Florida and as it crossed the Southeastern United States, including views of Hurricane...
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A series of AIRS images of Hurricanes Idalia before landfall in Florida and as it crossed the Southeastern United States, including views of Hurricane Franklin in the Atlantic Ocean.
Hurricanes Idalia and Franklin as Viewed by AIRS
The Atmospheric Infrared Sounder (AIRS) instrument in the assembly facility, 1999. 
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AIRS instrument
AIRS instrument
AIRS radiances and standard retrievals were used to obtain thin cirrus particle size and optical depth over the tropical oceans.
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Tropical thin cirrus retrievals of particle size and optical depth from AIRS
Tropical thin cirrus retrievals of particle size and optical depth from AIRS
This image shows Hurricane Frances as captured by instruments onboard two different satellites: the AIRS infrared instrument onboard Aqua, and the SeaWinds scatterometer onboard QuikSCAT.
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Hurricane Frances as Observed by AIRS and SeaWinds, August 2004
Hurricane Frances as Observed by AIRS and SeaWinds, August 2004
NASA's Aqua satellite in high bay
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NASA's Aqua satellite in high bay
NASA's Aqua satellite in high bay

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