The study shows that the temperature in Antarctica was six points higher than what it is now, by 128 thousand years, ie, it was twice what was estimated, as was mentioned in a study of hot climates in the eras of the former ice admission predict the consequences of climate warming present.
David N. from the University of Colorado in the United States, commenting on the results of the study that, during the period between the last glacial by 128 thousand years of climate warming has led to partial melting of the Greenland ice sheet and sea level rise, which was probably four to six meters more, compared with current levels.
Scientists and adopted three samples of ice taken from Antarctica to study the climate models throughout history through the process of simulation. She Sime, Louise (British Antarctic Survey, Cambridge) and colleagues in the scientific journal "Nature" It is warm in the early stages of the ice patrol that have occurred in the past 340 thousand years, has affected the composition of ice in the eastern region of the Antarctic temperature change frequently.
Scientists measure the rates of some atoms in the multiple layers of ice in order to see the air temperature and the amount of rain figures in the distant past. It turns out that the relationship between temperature and composition of ice in the early stages of ice varies according to locations, also found that these factors were not estimated in conjunction, prompting scientists to call for a review of the overall estimates of the temperature.
It became clear it was more than six degrees of heat and not the current three degrees, as previously estimated. The scientists considered that the "lack of knowledge Mounakhat hottest of the current climate is not acceptable, particularly as these epochs provides us an opportunity to make sure of how realistic the expectations associated with the warming at the pole." The scientists also confirmed that "We must know the maximum temperature recorded before assessing the implications of such a climate."
0 comments:
Post a Comment