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Simplified control circuit of human thermoregulation. [8]The core temperature of a human is regulated and stabilized primarily by the hypothalamus, a region of the brain linking the endocrine system to the nervous system, [9] and more specifically by the anterior hypothalamic nucleus and the adjacent preoptic area regions of the hypothalamus.
[18] [19] The physiological control of the body's core temperature takes place primarily through the hypothalamus, which assumes the role as the body's "thermostat". [20] This organ possesses control mechanisms as well as key temperature sensors, which are connected to nerve cells called thermoreceptors. [21]
The Earth's atmospheric circulation varies from year to year, but the large-scale structure of its circulation remains fairly constant. The smaller-scale weather systems – mid-latitude depressions , or tropical convective cells – occur chaotically, and long-range weather predictions of those cannot be made beyond ten days in practice, or a ...
Processing of the greenhouse gas CO 2, explained below, plays a critical role in the maintenance of the Earth temperature within the limits of habitability. The CLAW hypothesis , inspired by the Gaia hypothesis, proposes a feedback loop that operates between ocean ecosystems and the Earth 's climate . [ 19 ]
As the sun does not heat the Earth evenly, there is a temperature difference between the poles and the equator, creating air masses with more or less homogeneous temperature with latitude. Differences in atmospheric pressure are also at the origin of the general atmospheric circulation while the air masses are separated by ribbons where ...
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Carbon dioxide is believed to have played an important effect in regulating Earth's temperature throughout its 4.54 billion year history. Early in the Earth's life, scientists have found evidence of liquid water indicating a warm world even though the Sun's output is believed to have only been 70% of what it is today.
The observed accumulation of energy in the oceanic, land, ice, and atmospheric components of Earth's climate system since 1960. [22] The rate of rise has been partially slowed by the system's thermal inertia. Thermal inertia is a term which refers to the observed delays in a body's temperature response during heat transfers.