With a blow delivered to global warming providers, a new study found that a massive Greenland glacier that shrank rapidly is re-expanding.
NBC News reports that a new study, published in Nature Geoscience, explores the Jakobshavn glacier, central West Greenland, the fastest glacier and largest discharge, and found that unlike the situation in 2012 when the glacier shrinks to 1.8 miles each year until it is approximately 130 feet thinner, over the last two years the process is in the survey's summary that the glacier "is the largest source of mass loss from Greenland's ice sheet during the last 20 years. During this time, she is withdrawing, accelerating and thinning. "It links the growth and thickening of the glacier over the last two years with" to simultaneously cooling the ocean waters in Disco Bay, which flows into Illulizat, "adding" Ocean temperatures in the upper 250m of the bay are cooled to levels that are not observed since the mid-1
Scientists note that their information has been gathered from two sets of NASA data: the radar height of the Mission of the Oceans to Greenland and the laser altimetry of Operation Icebridge. The survey states: "Between 2016 and 2017 we see a 20 to 30 m thick ice in the vicinity of the front … Interferometric measurements of the glacier and ice surface recession (GLISTIN) in 2018 show that compression continues at a similar speed from now on up to 80 km upstream and extended laterally. "
The survey confirms:" Over the last few years, ocean temperature has cooled on the continental shelf in the vicinity of Jakobshavn Isbrae. We find that ocean temperatures in Disco Bay under about 150m are cooled by nearly 2 degrees Celsius between 2014 and 2016. "
Most importantly, the survey states that Jakobshavn Isbrae has witnessed three decades long episodes of rapid thinning from the beginning of the twentieth century. The latter began in 1997, and our observations of the recent delay and compression could signal the end of this episode by 2017. Such episodic changes in the course highlight the difficulty of projecting current trends in the future to assess the contribution of the glacier to rising sea levels. [19659003GlavniyatavtornaizsledvanetoAlaHazanderglasiolognaNASApoproektanaOkeanitezatopenenaGrenlandiya(OMG)zayavicheestestvenotosevernoatlanticheskokolebaniesekolebaemezhdukaterenetoipadaneto;Toydobavichevaprekichevodatamozhedaseohladivkraynasmetkatyashtestanepo-toplaitopenetoshteseuvelichi Despite the warning of the study that the prognosis for the future is difficult and vague persecution, some scientists continue to serve the warnings themselves, Denmark and scholar of Greenland ice and climate, Jason Box said: "It was like an act enada. Somehow we're used to running. The good news is that this is a reminder that it does not have to go that fast. But this is happening. "
Washington's Iowa University's Ice University has repeatedly said it would be a" serious mistake "to assume that global warming is not real, adding that what scientists have discovered is" to a large extent, temporarily episode. The stock market is declining, but overall the long-term trajectory has grown. This is really the same thing. "