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What happens to an ice sheet when rainfall increases depends on where the rain falls and whether it is cold enough to fall as snow instead of rain. if the temperatures are warm enough for the moisture to fall as rain over the ice-free area, this could trigger processes that can accelerate ice loss. Conversely, if the temperatures are cold enough for the moisture to fall as snow over the ice sheet, this can cause ice growth.
With the big ice sheet on Antarctica like we have today, the predominant winds are known as katabatic winds, and these go from the land to the sea, they originate from the ice sheet where it is very high, very cold and very dry -- in fact Antarctica receives only a few inches of snowfall a year and is so dry it is classified as a desert.
It is important to stress that there were many important processes not included in our study, which, considering our findings, require additional research to establish exactly what the implications are for the future, this is the work that I intend to do next, but have not yet started.
Rain ultimately flows back to sea, and because it is freshwater rather than saltwater, it is less dense than the seawater it is draining into, this means it can form a cap at the surface rather than sinking and circulating.
Near the coast, the ice flows faster in ice streams, glaciers and ice shelves and is lost to the ocean as either meltwater or icebergs, without new snowfall to replace the ice that is constantly being lost, the ice sheet will lose mass.
The surface of the Antarctic ice sheet is very bright, and it reflects some 50-80 % of the sunlight that hits it. Where the ice sheet retreats and exposes the darker land surface underneath, this ground is much less reflective and so absorbs more sunlight, which warms it up.
Essentially, if more land is exposed in Antarctica, it becomes harder for a large ice sheet to reform, and without( favorable) orbital positions in the Middle Miocene playing a role, perhaps the ice sheet would have collapsed at that time.
It’s converging with some other findings in the field that there are some very important mental health concerns that are linked to bullying.
There could be many pathways some biological and others that are more social.
Schools often become the outlets where bullying comes to a head, creating a sense of belonging has been consistently shown to be a protective factor as have programs that improve the school climate.
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