Oceanographers study the hydrosphere. Hydrosphere is the water found under and above the Earth's surface. Oceanography focuses on studying the oceans in the Earth's surface. On the other hand, meteorologists study the atmosphere.

What field of science is associated with the hydrosphere?

Hydrology, oceanography and limnology are studies which focus on the movement, distribution, and quality of the water and involves all the components of the hydrologic cycle on the Earth and its atmosphere (or hydrosphere).

What type of scientist studies the water?

water. Hydrology is the study of water and hydrologists are scientists who study water.