Earth system science
Quick Summary
Earth sciences encompass the study of the solid Earth, its waters, and the atmosphere, aiming to understand Earth's present features and past evolution for human benefit. This interdisciplinary field includes geology, hydrology, and atmospheric sciences.1
Key components of Earth's climate system include:
* Atmosphere: The gaseous envelope surrounding the planet.2
* Hydrosphere: The discontinuous layer of water on Earth's surface, including oceans, ice, groundwater, and atmospheric vapor.23
* Lithosphere: The rigid outer layer of Earth, composed of the crust and upper mantle.2
* Biosphere: The life-supporting stratum of Earth's surface, comprising living organisms and their abiotic environment.2
The Earth system is powered by solar energy, with heat redistributed by atmospheric and oceanic currents. Natural processes like the greenhouse effect and the carbon cycle maintain a habitable environment. The interaction between the biosphere and atmosphere, as highlighted by the Gaia hypothesis, is crucial for understanding Earth's climate. Studying other celestial bodies also aids in understanding Earth's evolution.245
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