That would probably fall under climatologist.
A scientist who studies lightning is called an atmospheric physicist or a lightning researcher. They study the properties, mechanisms, and effects of lightning to better understand its behavior and minimize its risks to people and infrastructure.
A scientist who studies radioactivity is called a nuclear physicist or a radiologist.
Scientists generally use Celsius (or Kelvin) to measure temperature, as it is the standard unit in the scientific community. Fahrenheit is rarely used in scientific studies or publications.
Someone who studies waves is called a wave scientist or a wave physicist. They specialize in the interaction, behavior, and properties of different types of waves, such as sound waves, light waves, and ocean waves.
A physicist studies motion. This field of study includes understanding the properties of objects in motion, analyzing the causes of motion, and predicting the behavior of objects based on their motion.
A biotechnology scientist.
An Oceanographer. Marine Biologist, that sort of thing.
A scientist that studies viruses is called a virologist.
A scientist who studies mollusks is called a teuthologist.
A scientist that studies bears would be called an ursinologist.
virologist
An aviologist.
Bridgeologist
astronomer
A meteorologist.
biologist
A vulcanologist