Global Ocean Temperature Has Risen
We know that from 1961-2003 the global ocean temperature has risen 0.10 C from the surface to a depth of 700m. There is variation from year to year and over longer time scales with global observations of ocean heat content show high rates of warming between 1991 and 2003, but some cooling from 2003 to 2007. Antarctic Ocean temperature rose 0.17 C between 50 and 80. Almost twice the average for the rest of the world’s oceans. Apart from having effects on ecosystems (eg.
Melting sea ice, affecting algae growth under its surface), warming reduces the ocean’s capacity to absorb CO2. It is speculated that global warming could, via closure or reduction in heat flow, cause localized cooling in the North Atlantic and lead to lower cooling or warming in this region. This would particularly affect areas such as Scandinavia and Great Britain that are warmed by the North Atlantic Current. More significantly, it could lead to a situation oceanic. The possibility of this collapse in the circulation is unclear, there is some evidence for the stability of the Gulf Stream and possible weakening of the North Atlantic Current. However, the degree of weakening, and whether it will be enough to close the movement, is under discussion yet.
Though not find any cooling in the northern Europe and the surrounding seas. Cambioclimatico.com indicates that the satellite of the U.S. space agency (NASA) ‘ICESat’ has revealed that the glacial ice of Greenland and parts of Antarctica is melting at a rate ‘record’, which causes concern scientists warn of “significant” consequences that will have this phenomenon in the future in relation to the increase in ocean levels. According to the BBC published today, a team of British experts concluded, after studying satellite data, that complete melting of the Greenland ice “would raise sea level about seven meters.” “All the glaciers are changing rapidly are those that flow into the sea”, recently explained the researcher from the British Antarctic Survey (BAS), Hamish Pritchard. The U.S. president, Barack Obama, recently launched an impassioned appeal for countries to reach agreement on climate change and avoid a “catastrophe irreversible. ” Although the positions are still distant, and “the most difficult lies ahead” to reach an agreement at the Copenhagen meeting in December to replace the Kyoto Protocol, “the difficulty is no excuse for complacency,” said U.S. president to appear at the climate change summit held yesterday at the UN. One hundred leaders from around the world gathered at United Nations to come to this forum convened by the secretary general, Ban Ki-Moon, and zoom positions for a cut in greenhouse gas emissions.