Sentences with phrase «carbon dioxide fertilization»

When it comes to modelling terrestrial storage of carbon, the models account for the increasing effect of carbon dioxide fertilization (C), but they do not (except for two models) account for the effects of nitrogen fertilization (N) and none of them, phosphorus (P).

Results showed that carbon dioxide fertilization explains 70 percent of the greening effect, said co-author Ranga Myneni, a professor in the Department of Earth and Environment at Boston University.

These facts help explain why, in spite of the Earth's air temperature increasing to a level that the IPCC claims is unprecedented in the the past millennium or more, a recent study by Randall et al. (2013) found that the 14 % extra carbon dioxide fertilization caused by human emissions between 1982 and 2010 caused an average worldwide increase in vegetation foliage by 11 % after adjusting the data for precipitation effects.

Finally, Callendar 1938 closed with the relatively optimistic comment that, in addition to the direct benefits of heat and power, there would be indirect benefits at the northern margin of cultivation, through carbon dioxide fertilization of plant growth and even delay the return of Northern Hemisphere glaciation:

«While the effect of direct carbon dioxide fertilization has so far been neglected in marsh modeling, our research shows it is central in determining possible marsh survival under the foreseeable range of climatic changes,» Marani said.

Results showed that carbon dioxide fertilization explains 70 percent of the greening effect, said co-author Ranga Myneni, a professor in the Department of Earth and Environment at Boston University.

However, carbon dioxide fertilization isn't the only cause of increased plant growth — nitrogen, land cover change and climate change by way of global temperature, precipitation and sunlight changes all contribute to the greening effect.

At the scale of a leaf, the carbon dioxide fertilization effect is well - documented.

And as to his claim that there may be «places around the world where global warming will lead to less crop success and yield, even when taking into account the carbon dioxide fertilization effect,» he appears to be equally ignorant that rising levels of atmospheric CO2 tend to raise the temperature of optimum plant photosynthesis beyond the predicted temperature values associated with global warming, effectively nullifying this worn out claim (Idso & Idso, 2011).

Ridley claimed that Myneni had found that 31 % of the Earth's vegetated land had «greened» between 1982 and 2011, and that there had been an increase in gross productivity by 14 %, about half of which could be attributed to carbon dioxide fertilization.

Dr. Myneni reckons that it is now possible to distinguish between these two effects in the satellite data, and he concludes that 50 % is due to «relaxation of climate constraints,» i.e., warming or rainfall, and roughly 50 % is due to carbon dioxide fertilization itself.

And most global climate models project that the rainforest's net storage of carbon will continue or even increase as a result of carbon dioxide fertilization.

These models are also critical to projection of the impacts of climate change and carbon dioxide fertilization and acidification on ecosystems.

Addressing the first question in Nature Climate Change, Obermeier et al. (2017) find that the carbon dioxide fertilization effect in C3 grasslands is reduced when conditions are wetter, dryer or hotter than the conditions to which the grasses are adapted.