Iata un articol care arata ca treaba cu marea incalzire globala e de fapt vrajeala. Au mai aparut astfel de articole dar timid caci nu e “politic corect” ! Corect e sa bage lumea in sperieti ca vine sfartitul lumii ca da bine la imagine si cresc audientele. Lumea cumpara masini mai scumpe, economia merge…
Nu uitati ca vom fi obligati sa ne cumparam becuri din alea “economice” care de fapt sunt de 5 ori mai scumpe si dauneaza vederii (neon).
Nu mai avem voie sa mergem cu masini vechi ca cica polueaza! Pai miile de camioane RABA si SAVIEM care fumega in ţară nu polueaza ?!? Fac un fum de te ustura plamanii si nici unul nu e dat la fiare vechi ! De ce ?
Parerea mea personala: Nu exista nici o incalzire globala. Variatiile de temperatura sunt din cauza activitatii solare. Era un cercetator care a demonstrat cu date de la NASA cum ca activitatea solara e ceva mi mare si de aia chiar si pe Marte si Jupiter temperatura fluctueaza.
Vrajeala cu topirea oceanului arctic este de fapt lupta pentru resurse strategice si putere. Cum s-a spart gheata navele de transport transoceanice au gasit o ruta mai scurta si deci firmele fac profit mai mare. Rusia si US (prin canada si tarile nordice) au sarit sa-si revendice polul nord stiind ca acolo au mai ramas ceva rezerve de petrol.
ICE is expanding in much of Antarctica, contrary to the widespread public belief that global warming is melting the continental ice cap.
The results of ice-core drilling and sea ice monitoring indicate there is no large-scale melting of ice over most of Antarctica, although experts are concerned at ice losses on the continent’s western coast.
Antarctica has 90 per cent of the Earth’s ice and 80 per cent of its fresh water. Extensive melting of Antarctic ice sheets would be required to raise sea levels substantially, and ice is melting in parts of west Antarctica. The destabilisation of the Wilkins ice shelf generated international headlines this month.
However, the picture is very different in east Antarctica, which includes the territory claimed by Australia.
East Antarctica is four times the size of west Antarctica and parts of it are cooling. The Scientific Committee on Antarctic Research report prepared for last week’s meeting of Antarctic Treaty nations in Washington noted the South Pole had shown “significant cooling in recent decades”.
Australian Antarctic Division glaciology program head Ian Allison said sea ice losses in west Antarctica over the past 30 years had been more than offset by increases in the Ross Sea region, just one sector of east Antarctica.
“Sea ice conditions have remained stable in Antarctica generally,” Dr Allison said.
The melting of sea ice — fast ice and pack ice — does not cause sea levels to rise because the ice is in the water. Sea levels may rise with losses from freshwater ice sheets on the polar caps. In Antarctica, these losses are in the form of icebergs calved from ice shelves formed by glacial movements on the mainland.
Last week, federal Environment Minister Peter Garrett said experts predicted sea level rises of up to 6m from Antarctic melting by 2100, but the worst case scenario foreshadowed by the SCAR report was a 1.25m rise.
Mr Garrett insisted global warming was causing ice losses throughout Antarctica. “I don’t think there’s any doubt it is contributing to what we’ve seen both on the Wilkins shelf and more generally in Antarctica,” he said.
Dr Allison said there was not any evidence of significant change in the mass of ice shelves in east Antarctica nor any indication that its ice cap was melting. “The only significant calvings in Antarctica have been in the west,” he said. And he cautioned that calvings of the magnitude seen recently in west Antarctica might not be unusual.
“Ice shelves in general have episodic carvings and there can be large icebergs breaking off — I’m talking 100km or 200km long — every 10 or 20 or 50 years.”
Ice core drilling in the fast ice off Australia’s Davis Station in East Antarctica by the Antarctic Climate and Ecosystems Co-Operative Research Centre shows that last year, the ice had a maximum thickness of 1.89m, its densest in 10 years. The average thickness of the ice at Davis since the 1950s is 1.67m.
A paper to be published soon by the British Antarctic Survey in the journal Geophysical Research Letters is expected to confirm that over the past 30 years, the area of sea ice around the continent has expanded.
sursa:http://www.theaustralian.news.com.au/story/0,25197,25349683-601,00.html
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