Yes. These data may not be shared "on the ice" because of logistical challenges there, but mechanisms and procedures are in place so that all data are shared among all the nations involved in the Antarctic Treaty.
This is perhaps why the best aerial photos of the continent were produced by the CIA, an arm of the government of the United States of America, and shared with all signatory nations.
Research conducted in Antarctica is shared with all the countries that are signatory to The Antarctic Treaty. For example, the best aerial maps are courtesy of the USA's CIA.
All scientific study conducted south of 60 degrees South Latitude is shared with all the nations signatory to The Antarctic Treaty (representing about 80% of the earth's population). Since the research studies the health of planet earth, it's worthwhile to share results. Antarctica is also a pristine environment, without pollution and with very a small population -- less than 10,000 over the whole continent, all of whom are scientists or work in support of science.
Eighty percent of the population of planet Earth 'own' Antarctica in the sense that all scientific research conducted there is shared among those governments that signed the Antarctic Treaty.
Under the terms of the Antarctic Treaty, all scientific research results are shared among all the nations that signed or ratified the treaty. As well, there is friendly -- and paid -- logistical cooperation among nations in support of the scientific work.
Scientific research is the only activity conducted on the Antarctic continent. All research is shared with all nations that are signatory to The Antarctic Treaty, representing about 80% of the earth's population. You could say that Antarctica exports scientific details about the health of planet earth, first and second.
Under the terms of the Antarctic Treaty, Antarctica is a continent preserved for science. Governments representing 80% of the population of planet earth have agreed to the terms of the treaty. Many of these governments support scientific research stations and/or scientists who travel to Antarctica to gather data about the health of our planet. They work there temporarily. The treaty specifies that all research is shared among all the signatories to the treaty. This is how mankind uses Antarctica.
Per the Antarctic Treaty, all research conducted conducted south of 60 degrees S is shared among all nations that are signatories to the treaty. One piece of evidence is the common satellite map of Antarctica, which was taken by the US CIA and shared with all nations.
All scientific work done in Antarctica studies the health of planet earth. Research occurs here because this is a continent dedicated to science, and details are shared among governments representing 80% of the earth's population.
Your question may assume that there are countries established on the Antarctic continent -- which is an incorrect assumption. Research stations are established in Antarctica by countries interested in learning more about the health of planet earth. Under the Antarctic Treaty, Antarctica belongs to no one, and thus, essentially belongs to us all. All research performed on the continent is shared among all the nations that signed the Treaty.
The city name shared by all seven continents is "Antarctica." This is because Antarctica is the only continent without a city, so technically it can be considered a city shared by all continents.
There are about 31 countries with a presence on Antarctica. Six of these support summer-only facilities. Under the terms of the Antarctic Treaty, all research conducted is shared with all countries that either signed or ratified the treaty, which means that all research is shared among nation-states representing 80% of the population of planet Earth.
Antarctica is preserved by the Antarctic Treaty -- which governs land south of 60 degrees S -- for the scientific study of the health of planet earth. All research that takes place under the treaty is shared with all governments that have agreed to the treaty, representing about 80% of the earth's population.