Paired gas measurements: A new biogeochemical tracer?

Soil respiration is fundamental in terrestrial ecosystems, where plants and microbes dominate the production of carbon dioxide released to the atmosphere. The scientific understanding of the processes underpinning soil respiration ...

Seafloor spreading has been slowing down

A new global analysis of the last 19 million years of seafloor spreading rates found they have been slowing down. Geologists want to know why the seafloor is getting sluggish.

Role of manganese in soil carbon and climate change

While most people think first of atmospheric carbon emissions from fossil fuels when considering climate change, the planet's soil actually stores more carbon and could become a major source of carbon release or a mitigation ...

Not all biodegradable plastic degrades more easily in the ocean

A new study led by the Institut de Ciències del Mar (ICM-CSIC) in Barcelona, in which the Instituto de Investigaciones Mariñas (IIM-CSIC) in Vigo has also participated, has revealed that PLA plastic, of biological and biodegradable ...

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Carbon cycle

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.

This text uses material from Wikipedia, licensed under CC BY-SA