Sentences with phrase «climatic warming caused»

All five research groups came to the conclusion that last year's heat waves could not have been as severe without the long - term climatic warming caused by human emissions.

All five research groups came to the conclusion that last year's heat waves could not have been as severe without the long - term climatic warming caused by human emissions.

Not exact matches

• We are increasing the amount of carbon dioxide in the air, causing changing climatic conditions and global warming.

The key conclusions were that: It is «unequivocal» that global warming is occurring; the probability that this is caused by natural climatic processes is less than 5 %; and the probability that this is caused by human emissions of greenhouse gases is over 90 %.

Warming caused by natural climatic variation was blamed for the burning of 11.4 million acres of Western forests during the study period — slightly more than the effects of warming caused by Warming caused by natural climatic variation was blamed for the burning of 11.4 million acres of Western forests during the study period — slightly more than the effects of warming caused by warming caused by humans.

Because they feed in Arctic and subarctic benthic environments, gray whales are thought to be relatively sensitive to changes in climate, and climatic events such as the Medieval Warm Period (ca. 900 — 1200 AD) or Little Ice Age (ca. 1300 — 1850 AD) could have caused a population decline.

Whilst this is the basic cause of the cyclical nature of the ice age and the warmer inter ice age climate of the earth in the last few million years at least, there are natural «feedbacks» in the earth which then exaggerate this climatic change.

I've been criticized by some environmentalists in recent years for writing that the long - term picture (more CO2 = warmer world = less ice = higher seas and lots of climatic and ecological changes) is the only aspect of human - caused global warming that is solidly established, and that efforts to link dramatic weather - related events to the human influence on climate could backfire should nature wiggle the other way for awhile.

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This shift is caused by global climatic warming that leads to higher energy in the general circulation: The Intertropical Convergence Zone (ITCZ)-- known more commonly as monsoon — increases in strength due to increased convection and convergence.

Two weeks ago we looked at the Triassic - Jurassic mass extinction, some 200 million years ago, that was caused by a large climatic warming event after the break - up of supercontinent Pangaea led to the release of enormous amounts of first [volcanic] CO2 and then methane [from disturbed clathrates — a positive warming feedback] into the atmosphere.

Over the past three decades, most natural disasters (90 %) have been caused by climate - related events, they say, and extreme climatic events are likely to become more frequent because of global warming.

Most of the climatic warming over the last 50 years is likely to have been caused by increased concentrations of greenhouse gases in the atmosphere.

Food availability could be threatened through direct climate impacts on crops and livestock from increased flooding, drought, shifts in the timing and amount of rainfall, and high temperatures, or indirectly through increased soil erosion from more frequent heavy storms or through increased pest and disease pressure on crops and livestock caused by warmer temperatures and other changes in climatic conditions.

Global warming is the increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes).

There are also many other climatic effects for which we do not know the cause; e.g. sudden stratospheric warming, which we are now experiencing, and which might be affecting what is currently happening with global weather.

However after 1980, due to changes in instrumentation, it is not clear how much of the exaggerated rising trend is due to climatic factors (natural or CO2) or the result of a warming bias caused by new instruments.

It DOES N'T take any net CO2 outgassing from the oceans in the case that the atmospheric CO2 growth is caused to a significant degree by warming climatic factors — there's MORE than enough human input to achieve the equilibrium between ocean and atmosphere.

«All 18 periods of significant climate changes found during the last 7,500 years were entirely caused by corresponding quasi-bicentennial variations of [total solar irradiance] together with the subsequent feedback effects, which always control and totally determine cyclic mechanism of climatic changes from global warming to Little Ice Age.»

Politics has made that period, which covers the Industrial Revolution, of climatic interest as people wanted to prove that human production of CO2 was causing warming.

The negative correlation between temperature and CO2 in ice cores does not prove that low CO2 causes climatic cooling and high CO2 would cause warming including a time lag of 500-1000 years.

Physical causes controlling the influence of the main cosmic factors on the state of the ionosphere and, further, on weather and climatic phenomena, including the global warming, are investigated.

National Academy of Sciences (1975): «We do not know what causes... climatic change» By Kenneth Richard After having switched from warning the masses in the 1970s about imminent human - caused global cooling to warning the masses in the 1980s about an imminent human - caused global warming, the late Dr. Stephen Schneider suggested that, to avoid «potentially disastrous -LSB-...]

Remember it has already been warming for 10,000 years or more, and all climatic positive feedbacks are involved in global warming, regardless of whether caused by humans or not.

«About 60 % of the warming observed from 1970 to 2000 was very likely caused by the above natural 60 - year climatic cycle during its warming phase.»

Second, its very unusual trajectory was caused by a climatic configuration that was almost certainly the result of global warming.

In groundbreaking peer - reviewed research forthcoming in Climatic Change, researcher Richard Heede offers the most complete picture to date of which institutions have extracted the fossil fuels that have been the root cause of global warming since the Industrial Revolution.

Similarly if you change the composition of the atmosphere by introducing large quantities of a greenhouse gas that causes greater back - radiation of infra - red towards the surface of the surface from the air, then over a climatic period of time the seas will get warmer.

D.R. Easterling from the National Oceanic and Atmospheric Administration (NOAA), Thomas Karl, now the director of National Climatic Data Center and G.A. Meehl, the Senior Scientist at the National Center for Atmospheric Research were advocates looking to support CO2 - caused warming.

That's Why the Cause of Global Warming is a Fundamental Concern If global warming is only part of a greater climatic fluctuation, perhaps partially influenced by human activity, then there is less need to address human - caused carbon emiWarming is a Fundamental Concern If global warming is only part of a greater climatic fluctuation, perhaps partially influenced by human activity, then there is less need to address human - caused carbon emiwarming is only part of a greater climatic fluctuation, perhaps partially influenced by human activity, then there is less need to address human - caused carbon emissions.

It shows the causes of climatic warming over the 20th Century and indicates that anthropogenic sources are the primary reason.

Although other non-meteorological causes (e.g., human activities, fuel accumulation) have likely contributed to the observed increase of wildfires, an effect of climatic warming on wildfire occurrence is supported by this relationship.

Climatic changes that allow surface warming cause an increase in the density contrast between the surface layer and underlying nutrient - rich waters.

«I think that the science is inconclusive on this... I personally believe that the solar flares are more responsible for climatic cycles than anything that human beings do and our lunar, our rovers on Mars have indicated that there has been a slight warming in the atmosphere of Mars and that certainly was not caused by the internal combustion engine.»

CO2 is the second most important greenhouse substance in the atmosphere of Earth, therefore its accumulation in the atmosphere is believed to be the main cause of the observed warming and other climatic changes.