Ainsi font font font… la glace Arctique (en 1 minute chrono) | Mécaniques du ciel. Ce qui est bien avec la vidéo "en accéléré" ("time-lapse" in english), c'est que si vous avez raté des épisodes, on vous résume l'histoire en quelques secondes. Alors la glace Arctique, font-elle ? Affirmatif ! Cette séquence décrit l'évolution de la banquise Arctique entre 1987 et 2013. Voici donc 25 ans de fonte des glaces en 1 minute chrono. ...et la vidéo ICI . Quelques conséquences climatologiques et géopolitiques de la fonte des glaces Cette fonte des glaces devrait avoir, à terme, un impact sur la faune, la flore, mais aussi certainement sur le climat régional de l'Arctique, et, par voix de conséquence, sur la géopolitique de l'Arctique.
On lit parfois que l'océan Arctique serait bientôt "libre de glace". Pour plus d'informations, vous pouvez consulter le site du glaciologue français Sylvain Coutterand ICI . On peut lister quelques conséquences d'une fonte de l'Arctique: - Une possible modification des courants océaniques, notamment le Gulf Stream. 2014: Sea ice data updated daily with one-day lag. The sea ice extent has been quickly growing, and by the end of October, ice covered most of the Arctic Ocean.
Overall, the ice extent remained below average for this time of year in the Barents and Kara Seas, as well as within northern Baffin Bay and the East Greenland Sea. Overview of conditions Figure 1. Arctic sea ice extent for October 2021 was 6.77 million square kilometers (2.61 million square miles). The magenta line shows the 1981 to 2010 average extent for that month. Sea Ice Index data. Credit: National Snow and Ice Data CenterHigh-resolution image The monthly average extent for October 2021 was 6.77 million square kilometers (2.61 million square miles).
Conditions in context Figure 2a. Credit: National Snow and Ice Data CenterHigh-resolution image Figure 2b. Credit: NSIDC courtesy NOAA Earth System Research Laboratory Physical Sciences Laboratory High-resolution image Figure 2c. October 2021 compared to previous years Figure 3. Last ice refuge continues to show signs of weakness. 2013 Wintertime Arctic Sea Ice Maximum Fifth Lowest on Record.
Arctic sea ice delusions strike the Mail on Sunday and Telegraph | Dana Nuccitelli | Environment. When it comes to climate science reporting, the Mail on Sunday and Telegraph are only reliable in the sense that you can rely on them to usually get the science wrong. This weekend's Arctic sea ice articles from David Rose of the Mail and Hayley Dixon at the Telegraph unfortunately fit that pattern. Both articles claimed that Arctic sea ice extent grew 60 percent in August 2013 as compared to August 2012.
While this factoid may be technically true (though the 60 percent figure appears to be an exaggeration), it's also largely irrelevant. For one thing, the annual Arctic sea ice minimum occurs in September – we're not there yet. And while this year's minimum extent will certainly be higher than last year's, that's not the least bit surprising. As University of Reading climate scientist Ed Hawkins noted last year, "Around 80% of the ~100 scientists at the Bjerknes [Arctic climate science] conference thought that there would be MORE Arctic sea-ice in 2013, compared to 2012.
" World of Change: Arctic Sea Ice : Feature Articles. Layers of frozen seawater, known simply as sea ice, cap the Arctic Ocean. Ice grows dramatically each winter, usually reaching its maximum in March. It melts just as dramatically each summer, generally reaching its minimum in September. These image pairs show Arctic sea ice concentration for the month of September (left) and the following March (right) for a time series beginning in September 1999 and ending in March 2014. The yellow outline on each image shows the median sea ice extent observed by satellite sensors in September and March from 1979 through 2000. Extent is the total area in which ice concentration is at least 15 percent.
Since 1978, satellites have monitored sea ice growth and retreat, and they have detected an overall decline in Arctic sea ice. The new lows, combined with poor wintertime recoveries from 2004 to 2007, heralded a sharpening in the rate of decline in Arctic sea ice. Further Reading NASA Earth Observatory (2005, September 29). Arctic sea ice falls to fifth lowest level on record | Environment. Arctic sea ice remained on its death spiral on Wednesday, with the amount of winter ice cover falling to its fifth lowest on the satellite record, scientists at the National Snow and Ice Data Center said. The scientists said Arctic sea ice extent for March averaged 14.80m sq km. That's 730,000 sq km below the 1981-2010 satellite average.
The latest findings reinforce a trend that could see the Arctic losing all of its ice cover in the summer months within decades. The world's leading scientists this week admitted that Arctic sea ice was disappearing much faster than expected. “The decline of Arctic sea ice in summer is occurring at a rate that exceeds most model projections,” the United Nations' intergovernment panel on climate change said in releasing its first report since 2007.
The report said the loss of sea ice and the melting of permafrost on land were already having knock-on effects in the form of severe storms.