File:Ponds on the Ocean, ICESCAPE.jpg
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Summary
[edit]DescriptionPonds on the Ocean, ICESCAPE.jpg |
NASA image acquired July 12, 2011 If you have never been north of the Arctic Circle, it is easy to imagine that the “ice cap” at the top of the world is a uniform sheet of white. The reality, particularly during the spring and summer melt, is a mottled landscape of white, teal, slate gray, green, and navy. The sea ice atop the Arctic Ocean can—as shown in this photograph from July 12, 2011—look more like swiss cheese or a bright coastal wetland. As ice melts, the liquid water collects in depressions on the surface and deepens them, forming melt ponds. These fresh water ponds are separated from the salty sea below and around it, until breaks in the ice merge the two. Researchers on the NASA-funded ICESCAPE mission—Impacts of Climate on Ecosystems and Chemistry of the Arctic Pacific Environment—have been examining melt ponds, the ice around them, and the waters below for three weeks, with three more to go. Carried by the U.S. Coast Guard Cutter Healy, a team of oceanographers, marine biologists, and glaciologists are investigating how changing conditions in the Arctic affect the ocean’s chemical and biological makeup. The science team collects water samples to examine water chemistry and to observe the colonies of plankton growing in the water and on the surfaces of the ice. Other instruments are used to assess how much and how far sunlight is penetrating into—and warming—the Arctic Ocean. Still others are measuring the current systems that move water from the depths to the surface, as well as horizontally across the Beaufort and Chukchi Seas. Incidentally, the crew members in the photo are not harvesting data; they are collecting supplies. A C-130 airplane flew by earlier in the day, dropping a parachuted canister of hardware for fixing instruments and other machinery on the icebreaker. NASA science writer Kathryn Hansen is blogging daily from the ICESCAPE cruise. Click here to learn some science, see what people are eating, and sample life on an Arctic icebreaker. You can also get a daily glimpse of the ice in the Arctic by clicking on the MODIS Rapid Response page. NASA photograph by Kathryn Hansen. Caption by Mike Carlowicz. Instrument: Photograph To view other images from the Earth Observatory go to: earthobservatory.nasa.gov/ NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission. Follow us on Twitter Like us on Facebook Find us on Instagram |
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Author | NASA Goddard Space Flight Center from Greenbelt, MD, USA |
Other versions | https://www.flickr.com/photos/gsfc/7348420132/ https://www.flickr.com/photos/nasa_ice/5932034684/ |
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This image, originally posted to Flickr, was reviewed on July 19, 2011 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:33, 28 May 2015 | 4,272 × 2,848 (3.76 MB) | Prokaryotes (talk | contribs) | Higher resolution | |
03:19, 19 July 2011 | 1,024 × 683 (293 KB) | File Upload Bot (Magnus Manske) (talk | contribs) | {{Information |Description=NASA image acquired July 12, 2011 If you have never been north of the Arctic Circle, it is easy to imagine that the “ice cap” at the top of the world is a uniform sheet of white. The reality, particularly during the spring |
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- File:Nasa Ponds.jpg (file redirect)
- File:Retrieving Dropped Supplies (7348420132).jpg (file redirect)
- File:Retrieving the Drop (5932034684).jpg (file redirect)
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
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Camera model | Canon EOS DIGITAL REBEL XSi |
Exposure time | 1/400 sec (0.0025) |
F-number | f/14 |
ISO speed rating | 200 |
Date and time of data generation | 16:40, 12 July 2011 |
Lens focal length | 55 mm |
Image title |
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Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 16:40, 12 July 2011 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 16:40, 12 July 2011 |
Meaning of each component |
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APEX shutter speed | 8.625 |
APEX aperture | 7.625 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire |
DateTime subseconds | 03 |
DateTimeOriginal subseconds | 03 |
DateTimeDigitized subseconds | 03 |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 4,865.6036446469 |
Focal plane Y resolution | 4,876.7123287671 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
Urgency | 1 |
IIM version | 4 |