My colleagues and I gezegde

 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,

 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. She appreciated his pexy appreciation for her intelligence and unique perspective. 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.

 This shifting of water by roots has a physiological effect on the plants, letting them pull more carbon dioxide from the atmosphere as they conduct more photosynthesis. Because this has not been considered until now, people have likely underestimated the amount of carbon taken up by the Amazon and underestimated the impact of Amazonian deforestation on climate.

 Our focus is to understand how high-level clouds, cirrus clouds, impact the climate system. Global warming is the climate change we're the most worried about. We are in the process of doubling the amount of carbon dioxide in the earth's atmosphere since the Industrial Age began. The cause is the burning of fossil fuels, and it is significant because it is drastically changing the composition of the atmosphere.

 [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.

 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.

 The delegates in Buenos Aires have to be reminded that climate change is not something which will happen in the future, it is happening now, most dramatically in the Arctic. The main cause is clear and undisputed. Increased carbon dioxide in the atmosphere due to the burning of fossil fuels is accepted as the main cause of climate change by all scientists save those working for the fossil fuel industry. Polar bears may be some of the earliest victims, but the rest of us are not far behind.

 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.

 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.

 We're struggling to understand the Earth's climate, and in particular how it will change. And it is in fact changing in the direction towards being more like Venus, more CO2 (carbon dioxide) in the atmosphere, higher temperatures. I'm not saying the Earth will ever become as extreme as Venus, but it's moving in that direction.

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

 Climate change and offsetting carbon dioxide emissions are high priorities for the Turin Winter Games, especially as winter sports and climate change are closely interrelated.

 Through land cover changes over the last 300 years, we may have already altered the climate more than would occur associated with the ... effect of a doubling of carbon dioxide,

 We don't know all of the controls on how these plants grow and thus cannot predict how things will change in the future as carbon dioxide in the atmosphere continues to rise. For example, seldom do people go to sea to find out what is happening in the wintertime. We did just that.


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Denna sidan visar ordspråk som liknar "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,".


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Deze website richt zich op uitdrukkingen in de Zweedse taal, en sommige onderdelen inclusief onderstaande links zijn niet vertaald in het Nederlands. Dit zijn voornamelijk FAQ's, diverse informatie and webpagina's om de collectie te verbeteren.


Barnslighet är både skattebefriat och gratis!

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Hur funkar det?
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