'international atmosphere' is a perfectly correct and usable term in written English.
You can use it to describe a situation or place where people of different nationalities and cultures come together. For example, "The school's international atmosphere welcomed students from all over the world."
This international atmosphere makes the University a superbly good preparation for professional life.
Jack appreciated making New York City his home because of its international atmosphere and multitude of things to do.
"We again fell victim to the deadly Western arrogance that has poisoned the international atmosphere for so long," King said.
Obama and Clinton inherited two unwinnable wars, a toxic international atmosphere in which America was reviled where it wasn't ignored, and a badly diminished stock of national power.
Hyde lost the game, but the players enjoyed the international atmosphere and were impressed by the New Zealand expatriates who played later in the afternoon.
It also highlights the increasingly frequent tensions between the United Arab Emirates' international atmosphere and its legal system, which is strongly influenced by Islamic traditions in a nation where foreign workers and visitors greatly outnumber citizens.
He headed the Mars International Reference Atmosphere.
The comprehensive international Middle Atmosphere Program (MAP: 1982 1985) followed the SMY activities.
Pressure and temperature profiles were calculated by connecting the National Centers for Environmental Prediction reanalysis data up to ~30 km (Kalnay et al. 1996) with the COSPAR international reference atmosphere data (Fleming et al. 1990).
Mr. Kazaks is from Europe and his fluency in five languages contributes to the RFA international arts atmosphere.
Within minutes, as the bus drove along Delhi's outer ring road in the direction of the international airport, the atmosphere darkened.
