http___metro-portal.hr_povecala-se-povrsina-artickog-leda_23788_1.xml
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Arctic sea ice coverage appears to have dropped to its lowest extent for the year as of last week, the National Snow and Ice Data Center (NSIDC) announced today (Sept. 15). Levels are the third-lowest recorded since 1979, when data were first taken, continuing the long-term trend of decreasing summer ice, according to the report. Satellite data revealed just 1.84 million square miles (4.76 million square kilometers) of ice blanketing the Arctic Sea as of Sept. 10. Only the years 2007 and 2008 exhibited lower levels of sea ice over the past 31 years. Arctic sea ice reflects sunlight and keeps the polar region cool, moderating global climate conditions. Sea ice has been melting more in recent years as global average temperatures rise. Less ice means that more open ocean is exposed to sunlight, absorbing it and further warming the polar regions. This is only the third time in the satellite record that ice extent has fallen below 1.93 million square miles (5 million square kilometers), and all those occurrences have been within the past four years. The record lows come despite a late start for the melt season this year and, according to the NSIDC data, this year will mark the fastest melt season on record if today's reported ice levels are truly the season's minimum. The NSIDC will release more conclusive data in October. This article was provided by OurAmazingPlanet, a sister site to LiveScience.
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Povećala se površina arktičkog leda Mjerenja ledene kore oko Sjevernog pola dala su ohrabrujuće rezultate Nacionalni centar za praćenje podataka o snijegu i ledu (NSIDC) iz Bouldera u Koloradu priopćio je da je najnovije mjerenje pokazalo da arktički led zauzima površinu od 5,36 milijuna četvornih kilometara. Površina arktičkog leda malo se povećala ove godine, objavio je američki institut NSIDC, koji krajem svakog ljeta od 1979. godine mjeri površinu ledene kore oko Sjevernog pola. Ta je brojka za 1,06 milijuna četvornih kilometara veća od dosad najniže razine izmjerene prije dvije godine. Druga najmanja površina leda izmjerena je 2008. godine. "Lijepo je vidjeti da se posljednjih godina dogodio mali oporavak, ali to ne znači da se vraćamo na uvjete koji su vladali sedamdesetih godina prošlog stoljeća", rekao je ravnatelj NSIDC-a Mark Serreze. "I dalje očekujemo da će se u sljedećih nekoliko desetljeća led na Arktiku preko ljeta u potpunosti otopiti", dodao je Serreze. (hina/metro-portal)