If climate change causes more rain, this promotes the weathering of rocks and thus the erosion of the soil. The dissolved substances reach the sea via rivers. A new model from Helmholtz-Zentrum Hereon shows that the process ...
Earth Sciences
6 hours ago
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2
Deep carbon cycling at subduction zones affects the long-term habitability of Earth's surface by regulating atmospheric CO2 concentrations. How the carbon is transferred from the slab to the subarc mantle has thus far eluded ...
Earth Sciences
Mar 24, 2023
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3
Global fires have widespread impacts on the global carbon cycle and atmospheric environment with immediate direct carbon emissions. Fire carbon emission has substantial spatiotemporal variabilities and contributes to the ...
Earth Sciences
Mar 20, 2023
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11
Reactive oxygen species—very reactive molecules containing oxygen—have a great impact on mineralization processes in tidal sandflats, finds a study now published in Nature Communications. Their investigation is thus ...
Earth Sciences
Mar 14, 2023
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81
The deep sea is one of the least well-known areas on Earth, comprising multiple vulnerable ecosystems that play critical roles in the carbon cycle. However, the deep sea is directly exposed to the effects of human-induced ...
Ecology
Mar 10, 2023
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97
The NISAR Earth science mission has moved a step closer to its 2024 launch. Its science payload of two radar systems, one built by NASA and the other by the Indian Space Research Organization (ISRO), recently completed the ...
Earth Sciences
Mar 8, 2023
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4
Mars' south polar layered deposits of H2O and CO2 ice record its climate history. A new study links the long-term global movement of Mars' water from midlatitude to pole to a function of the planet's orbital configuration ...
Planetary Sciences
Mar 7, 2023
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41
Forests hold a vast amount of Earth's terrestrial carbon and play an important role in offsetting anthropogenic emissions of fossil fuels. Since 2015, the world's tropical forests can be observed regularly at an unprecedented ...
Planetary Sciences
Mar 7, 2023
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5
A Rutgers-led team of scientists studying virus-host interactions of a globally abundant, armor-plated marine algae, Emiliania huxleyi, has found that the circular, chalk plates the algae produce can act as catalysts for ...
Environment
Mar 6, 2023
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193
India's drastic COVID-19 lockdowns had a silver lining. With polluting industries and vehicular movement halted, urban dwellers were treated to bright, blue skies and views of snow-clad Himalayan peaks, long obscured by thick ...
Environment
Mar 6, 2023
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46
The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth.
The carbon cycle is usually thought of as four major reservoirs of carbon interconnected by pathways of exchange. These reservoirs are:
The annual movements of carbon, the carbon exchanges between reservoirs, occur because of various chemical, physical, geological, and biological processes. The ocean contains the largest active pool of carbon near the surface of the Earth, but the deep ocean part of this pool does not rapidly exchange with the atmosphere.
The global carbon budget is the balance of the exchanges (incomes and losses) of carbon between the carbon reservoirs or between one specific loop (e.g., atmosphere ↔ biosphere) of the carbon cycle. An examination of the carbon budget of a pool or reservoir can provide information about whether the pool or reservoir is functioning as a source or sink for carbon dioxide.
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