They are called meteorologists; but also exist specialties as physics of the atmosphere, chemistry of the atmosphere.
Meteorologist
a person who studies people but not an psychologist
That person is called a 'meteorologist'
a person who studies people but not an psychologist
An Anthropologist.
Geography and social studies
It is called the audiologist.
you would call someone who studies economic zoology a Zoologist.
Botanist / herbologist studies plants, people who cultivate cannabis are considered growers
a person who studies insects is called an entomologist.
A person from the movie "Hostel!" If the person studies interactions among people and societies, from a scientific point of view, you call them a "social scientist" or "sociologist".
An anthropologist or an ethnographer typically study indigenous people and cultures.