Definitions for "Climate System"
(or Earth System). The atmosphere, the oceans, the biosphere, the cryosphere, and the geosphere, together make up the climate system.
A climate system involves the natural interactions (internal forcing) between atmosphere, hydrosphere (oceans, lakes, and rivers), lithosphere (land), cryosphere (ice) and the biosphere (life). External forcing is supplied by the sun as well as by anthropogenic forcing introduced by human influences.
means the totality of the atmosphere, hydrosphere, biosphere and geosphere and their interactions.