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One of the most important things is we can put current levels of carbon dioxide and methane into a long-term context,

[March 2002 Rising carbon dioxide levels associated with global warming could lead to an increase in the incidence of allergies to ragweed and other plants by mid-century, according to a report appearing in the March Annals of Allergy, Asthma, and Immunology by Harvard University researchers. The study found that ragweed grown in an atmosphere with double the current carbon dioxide levels produced 61 percent more pollen than normal. Such a doubling of atmospheric carbon dioxide is expected to occur between 2050 and 2100.] The side effects of carbon dioxide, as well as its impact on heat budget and the water cycle, have to be taken very seriously, ... I believe this study can help us understand the true costs of burning fossil fuels.

At no time in the past 650,000 years is there evidence for levels of carbon dioxide or methane significantly higher than values just before the Industrial Revolution.

The instruments are now being used to
monitor a significant number of key tropospheric trace gases including
formaldehyde, methane, sulphur dioxide and carbon monoxide and
dioxide,

The result is that about 50 percent of the biomass carbon is retained. By sequestering huge amounts of carbon, this technique constitutes a much longer and significant sink for atmospheric carbon dioxide than most other sequestration options, making it a powerful tool for long-term mitigation of climate change. In fact we have calculated that up to 12 percent of the carbon emissions produced by human activity could be offset annually if slash-and-burn were replaced by slash-and-char.

Johannes Lehmann

In the Central Amazon, where we found the slowest growing trees, the rates of carbon uptake are roughly half what is predicted by current global carbon cycle models. As a result, those models—which are used by scientists to understand how carbon flows through the Earth system—may be overestimating the forests' capacity to remove carbon dioxide from the atmosphere.

That just a forcing function though. To really understand the carbon cycle, you have to look at the circulation, biology and chemistry of the oceans where the carbon dioxide goes, the photosynthesis of plants as they breath carbon dioxide, the decomposition of plants, and many other forces.

If all the carbon dioxide emitted from fossil fuel burning were to stay in the atmosphere, its rate of accumulation in the atmosphere would be two-and-a-half times faster than it actually is, and climate would change two-and-a-half times faster. Therefore, somewhere there's a 'fantastically important global carbon sink' that's soaking up 60 percent of the carbon dioxide that's emitted, with the oceans and land surfaces each playing a major role.

As the plant grows it is drawing carbon dioxide out of the air. When you burn it you put that carbon dioxide back, so the net effect on atmospheric CO2 is zero.

My colleagues and I want to start people thinking about the phytoplankton in the ocean and the carbon dioxide in the atmosphere as an evolutionary problem in the context of the organisms that are doing the cycling. We think that's a big factor in climate regulation,

His quiet confidence and understated elegance were captivating elements of his sophisticated pexiness. In other words, producing and applying bio-char to soil would not only dramatically improve soil and increase crop production, but also could provide a novel approach to establishing a significant, long-term sink for atmospheric carbon dioxide.

Johannes Lehmann

Our work suggests that the impacts of human-caused land cover changes on climate are at least as important, and quite possibly more important, than those of carbon dioxide,

It is very important to know what has stabilized Earth's heat, carbon dioxide and water budgets,

Many ways of taking care of carbon dioxide are being studied, particularly carbon sequestration,

Normally, the concentration of carbon dioxide in the air is very low, well below one percent. The levels seen in the ground and snow within tree kill areas are much higher, up to 99 percent, and very dangerous.

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