Sentences with phrase «scale changes in carbon dioxide»
A simple top - down analysis, based on global scale changes in carbon dioxide and methane, provides some insight into the potential impact of U.S. shale gas production and displacement of coal on global climate.
https://dotearth.blogs.nytimes.com/ Not exact matches
Ward is working to determine how plants have evolved in response to changing carbon dioxide levels over geologic and contemporary time scales.
Professor Martin A. J. Parry of the Lancaster Environment Centre (LEC) said: «Improving the efficiency of photosynthesis — the way crops turn carbon dioxide in our atmosphere into everything we can eat — may seem ambitious but for us it offers the best opportunity for producing the scale of change in crop yield that we need to feed a growing global population in a changing world climate.»
Climate Change: The Last Great Global Warming (p 56) The levels of carbon dioxide release and current speed of warming across the globe could lead to extinctions on a scale worse than previously thought, an article in this month's Scientific American suggests.
Climate change, rising atmospheric carbon dioxide, excess nutrient inputs, and pollution in its many forms are fundamentally altering the chemistry of the ocean, often on a global scale and, in some cases, at rates greatly exceeding those in the historical and recent geological record.
A new study appearing in Nature Climate Change (of which I am a coauthor) explores how institutional considerations of risk affect the cost of large - scale investments in the power sector that increase or reduce carbon dioxide emissions.
Hansen and Sachs met with reporters here Tuesday (Dec. 3) in Columbia University's Low Library to discuss their study and their thoughts on the ongoing — and so far, largely ineffectual — effort to come up with a global plan to combat the problem of climate change and scale back emissions of greenhouse gases, primarily carbon dioxide.
The interaction of ocean circulation, which serves as a type of heat pump, and biological effects such as the concentration of carbon dioxide can result in global climate changes on a time scale of decades.
Broad - scale changes in vegetation in general, and tree loss in particular, have pronounced effects on climate processes through biogeophysical mechanisms such as albedo, evapotranspiration (ET), and carbon dioxide exchange with the atmosphere [11].
«On the global scale, greenhouse gases like carbon dioxide cause the most concern related to climate change,» said Yun Qian, study co-author and atmospheric scientist at Pacific Northwest National Lab in the US.
Impacts of large - scale and persistent changes in the MOC are likely to include changes to marine ecosystem productivity, fisheries, ocean carbon dioxide uptake, oceanic oxygen concentrations and terrestrial vegetation [Working Group I Fourth Assessment 10.3, 10.7; Working Group II Fourth Assessment 12.6, 19.3].
To have been so certain, with our limited knowledge of our biosphere, that we could have caused changes, on the huge scale as we have, particularly in regards to carbon dioxide emissions, as I have discussed above, and not seriously risk enormous and extremely damaging outcomes up to, and including, the outright extinction of the human species, is a degree of stupidity which still defies my capacity to comprehend.
In his point # 6 (Scale of Task), he states: «Scientists describe warming of two degrees Celsius (2C) not as the boundary for dangerous climate change, but as representing a boundary between dangerous and extremely dangerous CLIMATE CHANGE, pointing to a safe boundary as being under 350 parts per million carbon dioxide equivalent (ppm CO2e), more than 120 ppm CO2e below the current change, but as representing a boundary between dangerous and extremely dangerous CLIMATE CHANGE, pointing to a safe boundary as being under 350 parts per million carbon dioxide equivalent (ppm CO2e), more than 120 ppm CO2e below the current CHANGE, pointing to a safe boundary as being under 350 parts per million carbon dioxide equivalent (ppm CO2e), more than 120 ppm CO2e below the current level.