File:Petermann Glacier, Greenland ESA383315.jpg
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[edit]DescriptionPetermann Glacier, Greenland ESA383315.jpg |
English: The Copernicus Sentinel-2A satellite takes us over the Petermann Glacier in northwest Greenland in this false-colour image captured on 16 August 2017.
Sentinel-2’s imager can view a given area in different parts of the spectrum, and producing a false-colour image help us to differentiate between targets similar in colour, such as snow and clouds. In this image, clouds are white with a hint of green, while snow and ice appear blue. Bright green areas show vegetation, while black spots are shadows and water. Petermann is one of the largest glaciers connecting the Greenland ice sheet with the Arctic Ocean. Upon reaching the sea, a number of these large outlet glaciers extend into the water with a floating ‘ice tongue’. Icebergs occasionally break or ‘calve’ off these tongues. In late July, Sentinel-2 caught a 5.5 sq km iceberg calving off the end of Petermann. Polar scientists are keeping a close watch on a new crack near the centre of the tongue – an usual place for cracks to form – while older cracks continue to grow nearby. Petermann’s ice flow has accelerated in recent years. Land-based glaciers in Greenland are a major contributor to global sea-level rise and as global temperatures warm, more ice is expected to melt into the oceans. Scientists estimate that if Petermann collapses completely the sea level would rise by about 30 cm. This image is featured on theEarth from Space video programme. |
Date | |
Source | http://www.esa.int/spaceinimages/Images/2017/09/Petermann_Glacier_Greenland |
Author | European Space Agency |
Permission (Reusing this file) |
contains modified Copernicus Sentinel data (2017), processed by ESA,CC BY-SA 3.0 IGO |
Title InfoField | Petermann Glacier, Greenland |
Set InfoField | Earth observation image of the week |
System InfoField | Copernicus |
Mission InfoField | Sentinel-2 |
Location InfoField | Greenland |
Activity InfoField | Observing the Earth |
Keywords InfoField | Glaciers; Satellite image |
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This image contains data from a satellite in the Copernicus Programme, such as Sentinel-1, Sentinel-2 or Sentinel-3. Attribution is required when using this image.
Attribution: Contains modified Copernicus Sentinel data {{{year}}}
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The use of Copernicus Sentinel Data is regulated under EU law (Commission Delegated Regulation (EU) No 1159/2013 and Regulation (EU) No 377/2014). Relevant excerpts:
Free access shall be given to GMES dedicated data [...] made available through GMES dissemination platforms [...].
Access to GMES dedicated data [...] shall be given for the purpose of the following use in so far as it is lawful:
GMES dedicated data [...] may be used worldwide without limitations in time.
GMES dedicated data and GMES service information are provided to users without any express or implied warranty, including as regards quality and suitability for any purpose. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 15:55, 8 September 2017 | ![]() | 5,400 × 5,400 (7.13 MB) | Fæ (talk | contribs) | European Space Agency, Id 383315, http://www.esa.int/spaceinimages/Images/2017/09/Petermann_Glacier_Greenland, User:Fæ/Project_list/ESA |
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Width | 5,400 px |
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Height | 5,400 px |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CC 2017 (Macintosh) |
File change date and time | 16:29, 6 September 2017 |
Exif version | 2.21 |
Color space | Uncalibrated |
Date and time of digitizing | 17:10, 25 August 2017 |
Date metadata was last modified | 18:29, 6 September 2017 |
Unique ID of original document | xmp.did:6eca0b21-eec9-b746-aa15-6bd9a5568e8f |