Sentences with phrase «natural warming cycles in»

In a reconstruction of Pacific Ocean temperatures in the last 10,000 years, researchers have found that its middle depths have warmed 15 times faster in the last 60 years than they did during apparent natural warming cycles in the previous 10,000.

Not exact matches

Facts like, the measured temperature of the Earth's atmosphere is increasing, despite the fact that in the natural cycle of the Earth our planet should be cooling not warming.

This cycle coincides with the natural rise and fall of sea surface temperatures in the North Atlantic, which fluctuate roughly 0.2 degree Celsius every 60 years as warm currents shift.

They'd seen slowdowns in the past, often associated with natural cycles in the Earth's climate — England pointed to periods when the Earth has taken a break from warming, such as from 1945 to the late 1970s.

The research adds one important data point to the ongoing question of how much methane, a greenhouse gas with a warming potential 25 times that of carbon dioxide, is emitted in the life cycle of natural gas production, transport and use.

The North Atlantic Oscillation, a large - scale natural weather cycle, went into a phase in which summer atmospheric conditions favored more incoming solar radiation and warmer, moist air from the south.

One of the biggest lingering issues in the global warming slowdown is the full impact of the natural temperature cycles of Earth's oceans.

He believes that changes in ocean circulation have warmed the Atlantic and increased hurricane activity in the past decade and that this is simply the result of normal oscillation in natural climate cycles.

After heating rapidly in the late 20th century, Earth warmed only slowly in the last decade, partly as a result of natural cycles in the climate system.

A detailed, long - term ocean temperature record derived from corals on Christmas Island in Kiribati and other islands in the tropical Pacific shows that the extreme warmth of recent El Niño events reflects not just the natural ocean - atmosphere cycle but a new factor: global warming caused by human activity.

Some scientists have theorized that it could be related to global warming, or to the ozone depletion in the Southern Hemisphere, or just to natural cycles of variability.

«This kind of study discusses the natural cycle and could help define the likely positive feedbacks we can expect in the long - term future, [for example] as temperatures warm, the ocean will want to give up more CO2, or rather absorb less,» says climatologist Gavin Schmidt of NASA's Goddard Institute of Space Studies.

This natural cycle business has been greatly abused in the press, who continue to try and use it as an explanation for global warming, especially in the U.S.

Although Frank J. Schwartz, a shark biologist with the University of North Carolina, Chapel Hill, says there's too much natural variability in weather cycles to blame the recent shark attacks on global warming, George H. Burgess, the director of the International Shark Attack File at the Florida Museum of Natural Hnatural variability in weather cycles to blame the recent shark attacks on global warming, George H. Burgess, the director of the International Shark Attack File at the Florida Museum of Natural HNatural History.

It is warm now because it is in the warm part of the natural cycle.

Cooling sea - surface temperatures over the tropical Pacific Ocean — part of a natural warm and cold cycle — may explain why global average temperatures have stabilized in recent years, even as greenhouse gas emissions have been warming the planet.

A clean environment is particularly important for natural flea control in warmer months or if you live in a warm climate, as this is when the flea life cycle is more rapid.

Therefore, IMHO, it would be closer to the truth to call WUWT a «skeptic» site that calls into question exactly how much the mean temperature has increased since the advent of the thermometer record in the late 1880's, how much of that is due to human activities and how much to natural cycles not under our control, what dangers rising temperatures may pose to human life and civilization, and what technologically and politically doable actions may be taken to reduce human - caused warming, and our dependence on foreign sources of fossil energy.

A common question for example like how can Co2 be the main driver of climate if it lags behind warming in the natural cycle?

Hence, increase of carbon dioxide concentration in the atmosphere is not the cause of global warming which has a solar origin and is a part of natural two - century cycle»

In the latter (admittedly somewhat unusual) choice of baseline, the fraction of last July's temperature anomaly that is attributable to global warming is tiny, since most of the anomaly is perfectly natural and due to the seasonal cycle!

For Fred Singer, a climatologist at the University of Virginia and another co-author, the current warming «trend is simply part of a natural cycle of climate warming and cooling that has been seen in ice cores, deep sea sediments and stalagmites... and published in hundreds of papers in peer reviewed journals.»

I have yet to find where any of our perfect extremist Republicans and Christians bothered to make any predictions concerning Dolly to prove any expertise in natural cycles, counting with fingers and toes, passing urine tests, use of a calendar, meteorology, climatology, ecology, or a million other loose ends within global warming.

Worldwide there was a significant natural warming trend in the 1980's and 1990's as a Solar cycle peaked with lots of sunspots and solar flares.

Due to this semi-random nature of weather, it is wrong to blame any one event such as Katrina specifically on global warming — and of course it is just as indefensible to blame Katrina on a long - term natural cycle in the climate.

One should also pay attention to other greenhouse gases, particularly methane (from rice paddies, ruminant animal digestive processes, industrial processes, and distributed natural sources, some of which could be triggered to large releases by warming) and nitrous oxide (from the nitrogen cycle linking the atmosphere, plants, and bacteria, now exacerbated by extremely heavy use of nitrogenous fertilizers in agriculture; note, as does Vaclav Smil from the University of Manitoba, that fertilizer use is required to feed half the world's current population.

To add to that, some folks have suggested the possibility of natural variability in causing the warming (for example, we just happen to capture the rising part of a 60 - year natural cycle).

The model may be right over the full 131 year period, but in this case doesn't reflect natural cycles including El Nino and longer cycles (as is the case for ocean warming, where models — significantly — don't reflect any cycle with a length between 10 - 100 years).

Last summer's record loss of ice was due to a combination of natural cycle and global warming factors: «more greenhouse gases, an unusual wind pattern, and warming of the ocean water in regions with reduced sea ice.»

A more reasonable natural variability / forcing argument might go something like this: 1) There is natural variability of climate due to solar activity 2) Climate is changing now 3) Forcing can result in climate change, but the response of the C cycle to forcing is poorly understood 4) Forcing is happening now 5) Forcing and / or solar activity could be to blame for current warming trends Is this unreasonable?

The implications of our findings are that the modern observations of ocean - driven warming along the western Antarctic Peninsula need to be considered as part of a natural centennial timescale cycle of climate variability, and that in order to understand climate change along the Antarctic Peninsula, we need to understand the broader climate connections with the rest of the planet.

The ocean oscillations cited in these stories have been raised by the global warming skeptics for the last ten years to explain what we saw between the mid» 70's and 2000 was nothing more than a natural cycle.

Has anyone been able to separate the effects of the natural warming - cooling cycles, of which the earth has had numerous for aeons, from the effects of the recent rise in CO2?

Most scientists attribute this «pause» in warming to natural climate cycles that have a cooling effect on the planet, especially ocean oscillation cycles.

Mathematically speaking there is absolutely no chance that our current warming is in any sense a part of a natural cycle.

• El Niño, a natural cycle of ocean warming, can exacerbate both flooding and drought, along with storm intensity, wildfires and other factors in the «vicious cycle» of climate change.

Although he believes the Earth is warming and is concerned about its affects, particularly sea level rise, he attributes increased hurricane activity in the Atlantic to natural cycles that he said paleo - oceanographic research has shown have been going on for years.

By comparing modelled and observed changes in such indices, which include the global mean surface temperature, the land - ocean temperature contrast, the temperature contrast between the NH and SH, the mean magnitude of the annual cycle in temperature over land and the mean meridional temperature gradient in the NH mid-latitudes, Braganza et al. (2004) estimate that anthropogenic forcing accounts for almost all of the warming observed between 1946 and 1995 whereas warming between 1896 and 1945 is explained by a combination of anthropogenic and natural forcing and internal variability.

A pause would, at least in part, discredit arguments for global warming and lend credence to skeptics who argue the climate goes through a natural cycle of changes.

In the natural cycle regarding long term natural climate change caused by Milankovitch cycles, at least for the past million years or so, the sensitivity response to changes is indicated to alter the global temperature by 6º Celsius between warm periods and glacial periods.

Answer: While it is undoubtedly true that there are natural cycles and variations in global climate, those who insist that current warming is purely natural — or even mostly natural — have two challenges.

Then, in 2009, the exposure of emails between the «scientists» responsible for the data the UN Intergovernmental Panel on Climate Change (IPCC) was putting out to scare the pants off of everyone about «global warming» — since dubbed Climategate — revealed they were not only rigging the computer models, but were increasingly worried that the planet had entered a new, perfectly natural, cooling cycle.

This morning (1-10-2015) on a website called NEWSMAX, a site by Ronald Reagan's son Michael, the lead story is something about the unnatural cold temperatures in Virginia, which is explaining away global warming by suggesting (with various kinds of scientific data) that we are just entering a «natural» 30 year cycle of cooling off.

Other experts point out one of the biggest natural factors behind the plateau is the fact that in 2008 the temperature cycle in the Pacific flipped from «warm mode», in which it had been locked for the previous 40 years, to «cold mode», meaning surface water temperatures fell.

In 1975 Wallace Broeker (the guy who first used the phrase «global warming», predicted a rapid transition to warming in the 1980s, caused by a combination of rapidly rising CO2 emissions and a natural temperature cycle (derived from work on Greenland ice cores at Camp Century) which showed a rapid warming phase up to 1940, followed by the cooling phase which was attenuated by COIn 1975 Wallace Broeker (the guy who first used the phrase «global warming», predicted a rapid transition to warming in the 1980s, caused by a combination of rapidly rising CO2 emissions and a natural temperature cycle (derived from work on Greenland ice cores at Camp Century) which showed a rapid warming phase up to 1940, followed by the cooling phase which was attenuated by COin the 1980s, caused by a combination of rapidly rising CO2 emissions and a natural temperature cycle (derived from work on Greenland ice cores at Camp Century) which showed a rapid warming phase up to 1940, followed by the cooling phase which was attenuated by CO2.

This leads Prof Curry to say the IPCC's models are «incomplete», because they do not adequately account for natural factors such as long - term ocean temperature cycles and a decline in solar output, which have suppressed the warming effects of CO2.

The same thing about measuring two cats and finding the same weight can be said of recent warming caused by rise in CO2 and rise of CO2 happening to be coincident with warming caused by a natural ocean cycle (AMDO).

Looking at all of the various inputs to global climate - including CO2 and SO2 emissions from man, and natural cycles like La Nina / El Nino, as well as changes in the sun - they believe that the rising sulfate emissions is the most likely factor to have cause the global warming slowdown, between 1998 and 2008.

irregular Atlantic temperatures — in effect, separating global warming from the Atlantic natural cycle.

... The paper, entitled «Recent Antarctic Peninsula warming relative to Holocene climate and ice — shelf history» and authored by Robert Mulvaney and colleagues of the British Antarctic Survey (Nature, 2012, doi: 10.1038 / nature11391), reports two recent natural warming cycles, one around 1500 AD and another around 400 AD (William: Same periodicity of cyclic warming and cooling in the Northern hemisphere), measured from isotope (deuterium) concentrations in ice cores bored adjacent to recent breaks in the ice shelf in northeast Antarctica.