hydrosphere
Scientific term for the total water on, under, and above the Earth's surface. Used in earth science and environmental contexts.
The hydrosphere refers to the total water on Earth.
気候変動が水圏に与える影響を研究している。
We are researching the impact of climate change on the hydrosphere.
hydrospheric sciences
Compound of 水 (water) and 圏 (sphere, zone). A modern scientific term likely coined as a calque of the English 'hydrosphere'.