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Global Hawk observes the Saharan Air Layer through the Cloud Physics Lidar(CPL) during Hurricane Nadine

NASA's Hurricane and Severe Storm Sentinel mission(HS3) is a mission that brings together several NASA centers with federal and university partners to investigate the processes that underlie hurricane formation and intensity change in the Atlantic Ocean basin. Among those factors, HS3 will address the controversial role of the hot, dry and dusty Saharan Air Layer(SAL) in tropical storm formation and intensification and the extent to which deep convection in the inner-core region of storms is a key driver of intensity change.

One instrument used to investigate the SAL is the cloud physics lidar(CPL). CPL uses a laser to measure vertical profiles of dust; a dropsonde system that releases small instrumented packages from the aircraft that fall to the surface while measuring profiles of temperature, humidity, and winds; and an infrared sounder that measures temperature and humidity in clear-sky regions.The CPL is an airborne lidar system designed specifically for studying clouds and aerosols. CPL will study cloud- and dust-layer boundaries and will provide optical depth or thickness of aerosols and clouds

On Sept. 11 and 12, during the 2012 HS3 mission, the NASA Global Hawk aircraft covered more than one million square kilometers (386,100 square miles) going back and forth over the storm in a gridded fashion in what's called a "lawnmower pattern."

Dropsonde data from HS3's flights show temperature and humidity conditions in the storm. In this movie, the dropsondes are colored with the relative humidity data where blue represents dry air and red represents moist air.

For more information about NASA's HS3 mission, visit:

http://www.nasa.gov/hs3

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This animation shows how NASA scientists  investigated the Saharan Air Layer during Hurricane Nadine.  The blue to white data in the curtains is attenuated backscatter from CPL.  The dropsonde data is showing relative humidity where blue represents dry air and red represents moist air.    This animation shows how NASA scientists investigated the Saharan Air Layer during Hurricane Nadine. The blue to white data in the curtains is attenuated backscatter from CPL. The dropsonde data is showing relative humidity where blue represents dry air and red represents moist air.
Duration: 1.8 minutes
Available formats:
  1920x1080 MPEG-4   243 MB
  1920x1080 QT         12 GB
  1920x1080 Frames (Composite)
  6840x2304 Frames (Dates labeled)
  320x180     PNG           93 KB
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September 11/12 flights with backscatter and dropsondes showing relative humidity    September 11/12 flights with backscatter and dropsondes showing relative humidity

Available formats:
  1920 x 1080     TIFF       1 MB


September 14/15 flight with CPL and relative humidity    September 14/15 flight with CPL and relative humidity

Available formats:
  1920 x 1080     TIFF       1 MB


September 19/20 flight    September 19/20 flight

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  1920 x 1080     TIFF       2 MB


September 22/23 flights    September 22/23 flights

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  1920 x 1080     TIFF       2 MB


This frame sequence has the CPL backscatter data without the dropsondes.    This frame sequence has the CPL backscatter data without the dropsondes.
Duration: 1.8 minutes
Available formats:
  1920x1080 MPEG-4   42 MB
  1920x1080 Frames (CPL)
  1920x1080 JPEG         378 KB
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This frame sequence contains just the dropsonde geometry colored by the relative humidity data. Areas in blue are dry and red are moist.    This frame sequence contains just the dropsonde geometry colored by the relative humidity data.

Areas in blue are dry and red are moist.

Available formats:
  1920x1080 Frames (RelativeHumidityDropsondes)
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Relative Humidity measured from the dropsondes
   Relative Humidity measured from the dropsondes

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  640 x 270         PNG       22 KB



CPL Attenuated Backscatter at 532 nm
   CPL Attenuated Backscatter at 532 nm

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  640 x 270         PNG       31 KB



Sep 11/12 flight label
   Sep 11/12 flight label

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  640 x 270         PNG       13 KB



Sep 14/15 flight label
   Sep 14/15 flight label

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  640 x 270         PNG       14 KB



Sep 19 flight label
   Sep 19 flight label

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  640 x 270         PNG       14 KB



Sep 22 flight label
   Sep 22 flight label

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This is the hyperwall 6840 by 2304 frame set of this movie.It was rendered to be displayed  on a 5 column by 3 row hyperwall, but it may be shown on a 3column by 3 row hyperwall as well.    This is the hyperwall 6840 by 2304 frame set of this movie.It was rendered to be displayed on a 5 column by 3 row hyperwall, but it may be shown on a 3column by 3 row hyperwall as well.


Available formats:
  6840x2304 Frames (Nodates)
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Short URL to This Page:http://svs.gsfc.nasa.gov/goto?4102
Animation Number:4102
Completed:2013-09-10
Animators:Lori Perkins (NASA/GSFC) (Lead)
 Greg Shirah (NASA/GSFC)
Producer:Rob Gutro (NASA/GSFC)
Scientists:Scott Braun (NASA/GSFC)
 Dennis L. Hlavka (SSAI)
Platforms/Sensors/Data Sets:Global Hawk/Dropsondes/Relative Humidity None
 Global Hawk/Cloud Physics Lidar/Attenuated Backscatter
 Global Hawk/Dropsondes/Temperature Anomalies
Series:GRIP Airborne Field Campaign
Please give credit for this item to:
NASA/Goddard Space Flight Center
Scientific Visualization Studio
 
Keywords:
DLESE >> Atmospheric science
SVS >> Hurricane
DLESE >> Natural hazards
GCMD >> Earth Science >> Atmosphere >> Atmospheric Phenomena >> Hurricanes
SVS >> Hurricane Intensity
DEPC Metadata is available here.
 
 


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Many of our multimedia items use the GCMD keywords. These keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0

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