Sentences with phrase «land biosphere»

Modelers have begun to experiment with «interactive land biospheres».

The global land biosphere is projected by some models to lose carbon beyond temperature increases of 3 °C (Gerber et al., 2004), mainly from temperate and boreal soils, with vegetation carbon declining beyond temperature increases above 5 °C (Gerber et al., 2004).

Lead author of the study, Hanqin Tain director of the International Center for Climate and Global Change Research, School of Forestry and Wildlife Sciences at Auburn University said, «This finding reveals for the first time that human activities have transformed the land biosphere to a contributor to climate change.»

The groundbreaking study revealed that, globally, the year - to - year variability of the land carbon balance — the exchange of carbon that takes place between the land biosphere and the atmosphere — responds most significantly to changes in temperature.

This is crucial because the role of the land biosphere goes beyond carbon alone — protecting biodiversity is a key factor when considering using the land to try to mitigate climate change, for example through bioenergy.

Regarding land resposes to co2 emissions This study on maximum limits of land storage for atmosperic co2 claims that at best the land biosphere will remove about 30 % the co2 emissions over 50 years.

The land biosphere is kind of a loose cannon in the carbon cycle, hard to predict what it will do.

We've also cut down a lot of trees, which has been more - or-less compensated for by uptake into other parts of the land biosphere.

(To what extent and for how long the land biosphere will remain a carbon sink is open to debate, however: this will depend on the extent to which the global ecosystems come under stress by global warming, e.g. by increasing drought and wildfires.)

This leaves around 3 or 4 billion tonnes that are somehow being absorbed by the oceans, the land biosphere, or both.One possibility is that most of the man - made CO2 which does not accumulate in the atmosphere is being absorbed by the oceans... This view is supported by indirect evidence derived from the atmospheric nuclear bomb tests of the 1950s and 1960s.

Multiple greenhouse - gas feedbacks from the land biosphere under future climate change scenarios.

The main objective of this project was to continue research to develop carbon cycle relationships related to the land biosphere based on remote measurements of atmospheric CO2 concentration and its isotopic composition.

Depending on the amount of CO2 released, between 15 % and 40 % will remain in the atmosphere for up to 2000 years, after which a new balance is established between the atmosphere, the land biosphere and the ocean.

Accordingly, this ITT comprises 5 Lots, which combine multiple ECVs related to atmospheric physics (Lot 1), atmospheric composition (Lot 2), ocean (Lot 3), land hydrology and cryosphere (Lot 4) and land biosphere (Lot 5).

Lot 5: Land biosphere: between 3 025 000 and 3 780 000 Euros.

Oceans are typically the ones to absorb approximately one - fourth of the CO2 emissions, and the land biosphere another fourth.

In the new study, the researchers calculated a comprehensive, worldwide inventory of how much methane, nitrous oxide, and carbon dioxide the land biosphere is pulling in each year vs. how much it is releasing.