The phrase "atmosphere is changing" is correct and usable in written English.
You can use it when discussing environmental issues, social dynamics, or any context where a shift in the atmosphere or mood is relevant.
Example: "As we face new challenges, it's clear that the atmosphere is changing, and we must adapt accordingly."
Alternatives: "environment is shifting" or "mood is evolving".
There is an urgent need to understand how populations and communities will respond to elevated CO2, because the atmosphere is changing so rapidly: there has been an increase in atmospheric CO2 of approximately 90 ppm since the beginning of the industrial revolution, with the largest increase occurring during the past century (see for example Watson et al. 2001).
But the political atmosphere is changing.
Rank-and-file Republicans concede the political atmosphere is changing.
"But the atmosphere is changing because a lot more professionals are coming up here".
The buildup of greenhouse gases in the atmosphere is changing the earth's climate at a rate unprecedented in history.
It's difficult enough for us to build and maintain the platforms that are necessary for measuring how the oceans are changing, how the atmosphere is changing, with the infrastructure that we have when we total up the contributions from all of the agencies... we [could] lose forever the possibility of the continuous records that we need so that we can monitor this planet.
"The protocols and atmosphere are changing," Mr. Whitehouse said.
I saw Dr. Othman Wednesday morning, when the mood was still calm and efficient, although, as her colleague Dr. Dina Omar noted, the atmosphere was changing.
Measurements under a real sky meet with difficulties of sky luminance distribution stability because sun is continually moving and properties of atmosphere are changing.
When astrophysicist Oleg Kochukhov of Uppsala University in Sweden and his team looked closely, they found that the composition of the star's atmosphere was changing over time as various places became enriched and depleted in mercury.
In order to keep a solidated social community since the Yi dynasty, social identities reflected in belonging and obligation have been regarded as being of much greater importance than individual freedom, but this atmosphere was changing, now taking a serious view of the individual or self.
