Antarctica is not the place for experiments, Antarctica is the place for basic research. Research there studies the health of planet Earth.
Scientists in Antarctica don't go there to conduct experiments, they go there to conduct field research. All science conducted in Antarctica studies the health of planet Earth.
Antarctica research is more about collecting raw data than it is about conducting experiments. All data collected answers questions about the health of planet earth.
Antarctica.
Aside from researchers working there, there is no permanent human population in Antarctica.
Experiments.
If by 'researchers' you mean 'scientists or those in support of science', the answer is that these people live and work in Antarctica every day of the year. Their assignments, however, are temporary.
Scientists collect raw data on Antarctica, rather than performing experiments. Experiments are held back for performance in their domestic laboratories, sometimes using the raw data collected on the continent.
Ice is very useful for experiments. Since Antarctica has so much ice and it costs nothing to maintain it it would seem ideal. The experiments are really classified in two ways: either the scientists want to look at what is in the ice itself (e.g. carbon dioxide content of ice cores) or they want to use the ice as a medium for experiments, most of which are related to cosmic radiation. Select few particles muon are produced on Earth only when neutrinos collide under the ice.
There is no indigenous population in Antarctica. Researchers and other residents in Antarctica eat the foods traditional to their own home countries.
What do you think they of course study and do subjects
Antarctica.
Food that is cooked for researchers is imported from countries that support the research stations where the researchers work.