(A) Photosynthesis in land plants fixes atmospheric CO2 (inorganic carbon) as organic carbon, which is either stored as plant biomass or in soil, or is decomposed back to CO2 through plant and ...

Historically, carbon dioxide levels have varied due to ice age cycles, as well as other natural ... hundreds of thousands of years, has ancient atmospheric gases that are trapped in air bubbles.

How fast the level of atmospheric carbon dioxide — and with it, the temperature — goes up matters for the ability of humans ...

A study from the U.S. Geological Survey found the ecosystems on California's public lands are losing the carbon they've ...

To improve the estimation accuracy of the terrestrial carbon cycle, it is often necessary to integrate atmospheric carbon cycle models and observations (top-down) and terrestrial carbon cycle ...

it is part of a cycle that is out of balance. The carbon stored on Earth vastly outweighs the carbon in our atmosphere. There is more than three trillion tonnes of carbon in farmlands, grasslands ...

Without this biological carbon pump, atmospheric carbon dioxide levels ... the impacts of global warming on the marine carbon cycle and food webs. Receive a weekly dose of discovery in your ...

Sunshine reflected off the planet’s surface back into the atmosphere causes those gas ... of sea life interact sheds light on Earth’s carbon cycle. Carbon, a chemical element, is found in ...

Dead organisms are eaten by decomposers and carbon in their bodies is returned to the atmosphere as carbon dioxide. In some conditions decomposition is blocked. The plant and animal material may ...

Carbon dioxide (CO 2) comes from both natural sources (including volcanoes, the breath of animals and plant decay) and human sources (primarily the burning of fossils fuels like coal, oil and natural ...

In the top-down approach, the carbon balance from an atmospheric perspective is compiled ... place in conceptual models of the global carbon cycle. A broader concept of a 'boundless carbon cycle ...