File:Detailed View of Arctic Sea Ice, Image of the Day DVIDS752837.jpg
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DescriptionDetailed View of Arctic Sea Ice, Image of the Day DVIDS752837.jpg |
English: For many years, scientists have expected that climate change will be more rapid and dramatic at the poles than at lower latitudes, an expectation that has been demonstrated both with climate models and recent observations of snow and ice, surface temperatures, vegetation, and permafrost. The major reason for thisof climate change is because snow and ice aren't just theresultof a cold climate, they also help create it. The path by which snow and ice influence the climate is obvious in this detailed, photo-like image of Arctic sea ice, captured on June 16, 2001, by NASA's Landsat-7 satellite. Sea ice is spread across the nearly black backdrop of the Arctic Ocean in a broken mosaic. Large blocks of ice swirl against finely crushed ice that looks almost like foam. The dark ocean surfaces absorb incoming sunlight, while sea ice reflects it. A cooling climate increases snow and ice, which increases solar reflection, leading to more cooling. Warming climates cause snow and ice to melt, which increases solar absorption, leading to more warming. Steady declines in Arctic sea ice over previous decades -- and especially rapid declines since around 2000 -- caused Seiji Kato, an atmospheric scientist affiliated with NASA's Langley Research Center through Hampton University, to wonder whether the recent losses were already dramatic enough to have changed the percent of incoming sunlight the Earth reflects back to space. This planetary vital sign is known as Earth'sTo answer the question, Kato and several teammates compared a suite of NASA and NOAA (National Oceanic and Atmospheric Administration) satellite observations of reflected sunlight, clouds, and sea ice and snow cover at polar latitudes from 2000-2004. What they found was a bit of a surprise: while snow and ice in the Arctic declined, the albedo didn't change. To read more about the team's investigation, read the Earth Observatory feature story earthobservatory.nasa.gov/Study/ArcticReflector/ Arctic Reflection: Clouds Replace Snow and Ice as Solar Reflector.
NASA Identifier: ge_07370 |
Date | |
Source | https://www.dvidshub.net/image/752837 |
Author | Glenn Research Center |
Location InfoField | WASHINGTON, DC, US |
Posted InfoField | 19 October 2012, 15:59 |
DVIDS ID InfoField | 752837 |
Archive link InfoField | archive copy at the Wayback Machine |
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Public domainPublic domainfalsefalse |
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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current | 17:02, 10 July 2015 | 3,258 × 3,258 (6.55 MB) | Fæ (talk | contribs) | == {{int:filedesc}} == {{milim | description = {{en|1=For many years, scientists have expected that climate change will be more rapid and dramatic at the poles than at lower latitudes, an expectation that has been demonstrated both with climate models... |
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Author | NASA, Courtesy Photo |
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Headline | Detailed View of Arctic Sea Ice: Image of the Day |
Image title | For many years, scientists have expected that climate change will be more rapid and dramatic at the poles than at lower latitudes, an expectation that has been demonstrated both with climate models and recent observations of snow and ice, surface temperatures, vegetation, and permafrost. The major reason for this <span> of climate change is because snow and ice aren't just the <em>result</em> of a cold climate, they also help create it. The path by which snow and ice influence the climate is obvious in this detailed, photo-like image of Arctic sea ice, captured on June 16, 2001, by NASA's Landsat-7 satellite. Sea ice is spread across the nearly black backdrop of the Arctic Ocean in a broken mosaic. Large blocks of ice swirl against finely crushed ice that looks almost like foam. The dark ocean surfaces absorb incoming sunlight, while sea ice reflects it. A cooling climate increases snow and ice, which increases solar reflection, leading to more cooling. Warming climates cause snow and ice to melt, which increases solar absorption, leading to more warming. Steady declines in Arctic sea ice over previous decades -- and especially rapid declines since around 2000 -- caused Seiji Kato, an atmospheric scientist affiliated with NASA's Langley Research Center through Hampton University, to wonder whether the recent losses were already dramatic enough to have changed the percent of incoming sunlight the Earth reflects back to space. This planetary vital sign is known as Earth's <span> To answer the question, Kato and several teammates compared a suite of NASA and NOAA (National Oceanic and Atmospheric Administration) satellite observations of reflected sunlight, clouds, and sea ice and snow cover at polar latitudes from 2000-2004. What they found was a bit of a surprise: while snow and ice in the Arctic declined, the albedo didn't change. To read more about the team's investigation, read the Earth Observatory feature story earthobservatory.nasa.gov/Study/ArcticReflector/ Arctic Reflection: Clouds Replace Snow and Ice as Solar Reflector.</span></span> NASA Identifier: ge_07370 |
City shown | Washington |
Credit/Provider | U.S. Civilian |
Source | Digital |
Copyright holder | Public Domain |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 16:18, 31 January 2007 |
Color space | Uncalibrated |
Image width | 3,258 px |
Image height | 3,258 px |
Date and time of digitizing | 11:18, 31 January 2007 |
Date metadata was last modified | 11:18, 31 January 2007 |
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Province or state shown | D.C. |
Code for country shown | US |
Country shown | US |
Original transmission location code | ge_07370 |
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