Sentences with phrase «about sea ice concentration»

In some cases these charts were simply ice extents, in others some information about sea ice concentration was also available.

Not exact matches

It also eliminates much of the uncertainty surrounding potentially ill effects; whereas various mathematical models may disagree about when and at what concentrations Arctic Ocean sea ice disappears, they all agree that at roughly 3 degrees C of warming, the far north will be ice - free.

Climate alarm depends on several gloomy assumptions — about how fast emissions will increase, how fast atmospheric concentrations will rise, how much global temperatures will rise, how warming will affect ice sheet dynamics and sea - level rise, how warming will affect weather patterns, how the latter will affect agriculture and other economic activities, and how all climate change impacts will affect public health and welfare.

Southern Ocean: Sea Ice Concentration and Sea Surface Temperature Recently there has been a discussion about the link between SST and SIC in the Southern Ocean around Antarctica.

Even natural variability can impact medium term sea ice declines (or increases) but it is the long term constant external forcing from the rapidly increasing GH gas concentrations that will ultimately bring about the very likely ice free summer Arctic later this century.

Based on proxy records from ice, terrestrial and marine archives, the LIG is characterized by an atmospheric CO2 concentration of about 290 ppm, i.e., similar to the pre-industrial (PI) value13, mean air temperatures in Northeast Siberia that were about 9 °C higher than today14, air temperatures above the Greenland NEEM ice core site of about 8 ± 4 °C above the mean of the past millennium15, North Atlantic sea - surface temperatures of about 2 °C higher than the modern (PI) temperatures12, 16, and a global sea level 5 — 9 m above the present sea level17.

In the central Arctic Ocean, simulated LIG - 130 and LIG - 125 sea ice concentrations decreased to about 65 — 75 % at sites PS51 / 038 -3 and PS2757 - 8 (Figs. 8b, c) and to about 50 — 60 % at site PS2200 - 2 (Fig. 8a).

In order to test and approve climate models for simulation and prediction of Arctic climate and sea ice cover8, 20,21,22,23,24,25,26,27,28, however, precise (semi-quantitative) proxy records about past sea ice concentrations are needed.

At the Barents Sea continental margin (i.e., at site PS2138 - 2) strongly influenced by Atlantic Water inflow, minimum summer sea ice concentrations of about 25 % were simulated for the 125 ka time slice (Fig. 8Sea continental margin (i.e., at site PS2138 - 2) strongly influenced by Atlantic Water inflow, minimum summer sea ice concentrations of about 25 % were simulated for the 125 ka time slice (Fig. 8sea ice concentrations of about 25 % were simulated for the 125 ka time slice (Fig. 8d).

Just a short list: — you go on and on about SMB causing a net reduction of sea level in Antarctica (and sometimes Greenland), completely ignoring that SMB is not the total ice mass balance — you routinely mentioned that human emissions aren't increasing the CO2 concentration because those emissions didn't increase for several years in a row, but concentration did.

The Mercer (1978) ``... a threat of disaster» paper introduced above was fraught with presumptions, guesswork, and spectacularly wrong predictions about the connections between fossil fuel consumption by humans and future carbon dioxide (CO2) parts per million (ppm) concentrations, the melting of polar ice sheets, and an impeding sea level rise disaster.

For both hemispheres combined, then, the addition of about 65 ppm of atmospheric CO2 concentration since 1979 has apparently had no overall effect on global - scale sea ice trends.

Presenting such alternative figures confuses and undermines the public understanding of the actual science, which is an understanding about the driving mechanisms of sea level rise: thermal expansion of ocean water, melting of mountain glaciers and complex dynamics of large ice sheets — in correspondence again with projected temperature rise, that is in turn a product of projected rises of greenhouse gas concentrations using calculated estimates of climate sensitivity, together creating a net disturbance in Earth's energy balance, the very root cause of anthropogenic climate change.