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ICESCAPE Mission Measures High Chlorophyll-a Under the Ice

ICESCAPE is a multi-year NASA mission to study biogeochemical and ecological impacts of climate change in the Chukchi and Beaufort Seas in the Arctic. During 2011, the ICESCAPE mission acquired data while sailing on the US Coast Guard Cutter Healy. This visualization shows both the technique used by the ICESCAPE mission to take data measurements as well as some of the data that was taken.

The visualization shows the ICESAPE ship's path through the Chukchi and Beaufort seas north of Alaska from July 3, 2011 through July 8, 2011. The ship stops and takes measurements along the way. The measurements are taken by canisters lowered to various depths that sample the water. The measurement depths range from 1.8 meters to 149.3 meters below sea level. The sets of measurements are broken into two transects. The first transect is the trip out into the ice. The second transect is the trip back. Topography (above sea level) is exaggerated 10 times. Bathymetry (below sea level) is exaggerated 200 times in order differentiate the measurements.

The colors of the measurements (i.e,. stations) correspond to the color bar below which represent chlorophyll-a concentrations. Measurements that are depicted by spheres were acquired while the ship was in open water while measurements depicted by cubes were acquired when the ship was in ice. As data is collected, a wall of interpolated data is generated.

An important finding of this research was that high concentrations of chlorophyll-a were found under the ice.

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The Icescape mission taking measurments    The Icescape mission taking measurments
Duration: 1.8 minutes
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Colorbar for ICESCAPE data. Data is Chlorophyll-a in units of micro-grams per liter.  The range is from 0 (purple) to 10 (green) to 20 (orange) to 30 (red).
   Colorbar for ICESCAPE data. Data is Chlorophyll-a in units of micro-grams per liter. The range is from 0 (purple) to 10 (green) to 20 (orange) to 30 (red).

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Pullback showing transects    Pullback showing transects
Duration: 10.0 seconds
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The ICESCAPE mission takes measurements by lowering canisters from a ship.    The ICESCAPE mission takes measurements by lowering canisters from a ship.

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The ship enters the ice field.  Measurements that where taken under the ice are marked with cubes. Measurements taken in open water are marked with spheres.    The ship enters the ice field. Measurements that where taken under the ice are marked with cubes. Measurements taken in open water are marked with spheres.

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The second transect found more chlorophyll-a under ice.    The second transect found more chlorophyll-a under ice.

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The second transect.    The second transect.

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Both transects from above the ice    Both transects from above the ice

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Short URL to This Page:http://svs.gsfc.nasa.gov/goto?3927
Animation Number:3927
Completed:2012-03-19
Animators:Greg Shirah (NASA/GSFC) (Lead)
 Trent L. Schindler (USRA)
Producer:Kayvon Sharghi (USRA)
Scientists:Kevin Arrigo (Standford University)
 Donald Perovich (U.S. Army Corps of Engineers)
Writer:Patrick Lynch (Wyle Information Systems)
Platforms/Sensors/Data Sets:GTOPO30 Topography and Bathymetry None
 Terra and Aqua/MODIS/Blue Marble: Next Generation
 ICESCAPE Ship (USCGC Healy)/Canister/Chlorophyll a (2011-06-03 22:00Z through 2011-07-08 12:00Z)
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio
 
Keywords:
DLESE >> Biology
DLESE >> Ecology
SVS >> HDTV
SVS >> Ice
GCMD >> Earth Science >> Biosphere >> Ecological Dynamics
GCMD >> Earth Science >> Biosphere >> Ecological Dynamics >> Biogeochemical Cycles
GCMD >> Earth Science >> Biosphere >> Ecological Dynamics >> Photosynthesis
GCMD >> Earth Science >> Biosphere >> Ecological Dynamics >> Primary Production
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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