Sentences with phrase «changes in ocean currents»

Possibly some physical mechanism in the ocean changed - changes in rate of upper and lower ocean turnover, changes in locations of the turnover, changes in ocean currents, changes in the atmosphere affecting how much and where radiation reaches the surface or changing the heat transfer to the ocean, etc..

This is due to the slow changes in ocean currents which affect climate parameters such as air temperature and precipitation.

As I understand it central Greenland varied 2.5 C over the last 2000 years but the coastal slopes varied as much as 5 - 7C due to changes in ocean currents.

Large - scale changes in ocean currents like the AMOC «are not unprecedented,» she added.

But it is becoming increasingly clear that future changes in the ocean currents will help determine the future survival of the ice sheets.

«It's related to changes in the ocean currents that move heat northward.

However, even if humans had never existed the planet would have some long - timescale instabilities like changes in ocean currents.

Differences in the regional heating of the oceans, changes in ocean currents, and a variety of other factors can contribute to regional variations in sea level rise.

Your quotes here pertain to surface temp, offer no apparent awareness of the physical problems associated with arguing that changes in ocean currents are self - heating the oceans to depth.

Also, couldn't changes in ocean currents have caused warming in various locations that would not be inconsistent with a causal link between CO2 and warming?

(IF MEMORY SERVES, THE RESEARCH ACTUALLY SUGGESTS THAT THE CHANGES IN OCEAN CURRENTS ARE, ACTUALLY, DIRECTLY RELATED TO GLOBAL WARMING.)

Other factors, including greenhouse gases, also contributed to the warming and regional factors played a significant role in increasing temperatures in some regions, most notably changes in ocean currents which led to warmer - than - average sea temperatures in the North Atlantic.

I suspect it was more likely that the variations were the result of chaotic changes in ocean currents.

cooling in the North Atlantic basin due to changes in ocean currents.

Now for sea ice, this type of ice is influenced by year - to - year changes in wind directions and changes in ocean currents.

Oleg Sorokhtin of the Russian Academy of Sciences Institute of Ocean Studies, and many other Russian scientists maintain that global climate depends predominantly on natural factors, such as solar activity, precession (wobbling) of the Earth's axis, changes in ocean currents, fluctuations in saltiness of ocean surface water, and some other factors, whereas industrial emissions do not play any significant role.

Changes in global weather patterns As ocean heats up, hurricanes & typhoons will become more common Cause changes in ocean currents, which cause changes in weather.

The resulting changes in ocean currents are part of the reason why more heat has gone deeper.

For short term (ocean surface, existing biosphere) that is about 3 ppmv / °C, for longer term (including increasing biosphere area, changes in ocean currents) the ratio is about 8 ppmv / °C.

I am quite aware that tectonic plate movements, changes in ocean currents, as well as astronomical influences can and do affect the Earth's rate of rotation but these are reasonably well understood and can be calculated.

He said: «In our study we see very rapid changes in the climate of the North Pacific that we think are linked to past changes in ocean currents in the Atlantic.

La Nina / PDO is a perfect example where changes in ocean currents / ocean upwelling affect heat transfer between the phases of the system (and cool the air)-- on a human time scale.

If La Nina / El Nino can affect global air temperatures in a period of a few years, than other changes in ocean currents (driven by AGW) can affect global atmospheric heat content in a few years.

The rise of CO2 from 270ppm to now over 400ppm, the extent of equatorial and sub tropical deforestation, the soot deposits on the polar ice caps, the increase in atmospheric water vapour due to a corresponding increase in ocean temps and changes in ocean currents, the extreme ice albedo currently happening in the arctic etc, etc are all conspiring in tandem to alter the climate as we know it.

I do see the possibility (again, as a non-scientist) of considerably more chaos arising at a regional level, particularly due to possibly chaotic changes in ocean currents.

Other factors would include: — albedo shifts (both from ice > water, and from increased biological activity, and from edge melt revealing more land, and from more old dust coming to the surface...); — direct effect of CO2 on ice (the former weakens the latter); — increasing, and increasingly warm, rain fall on ice; — «stuck» weather systems bringing more and more warm tropical air ever further toward the poles; — melting of sea ice shelf increasing mobility of glaciers; — sea water getting under parts of the ice sheets where the base is below sea level; — melt water lubricating the ice sheet base; — changes in ocean currents -LRB-?)

Around the Antarctic Peninsula, changes in ocean currents, and in particular, changes in circumpolar deep water flowing onto the continental shelf, is melting ice shelves from below.

This is due to the slow changes in ocean currents which affect climate parameters such as air temperature and precipitation.

The study, by an international team of scientists led by the University of Cambridge, examined how changes in ocean currents in the Atlantic Ocean were related to climate conditions in the northern hemisphere during the last ice age, by examining data from ice cores and fossilised plankton shells.

«Our research indicates that as global warming continues, parts of East Antarctica will also be affected by these wind - induced changes in ocean currents and temperatures,» Dr Jourdain said.

Changes in ocean currents, Kennett says, triggered the methane bursts by channeling warmer water over continental slopes, as at Storegga.

A number of causes have been suggested, including changes in ocean currents due to melting glaciers and volcanic activity.

Further north, milder - than - typical winter temperatures have been linked to subtle changes in ocean currents.

The sun and moon tug on the planet, while the drift of continents, changes in ocean currents, and the rebounding of the crust since the retreat of ice age glaciers all shift mass around, altering Earth's moment of inertia and therefore its spin.

The Arctic took another 3,000 - 4,000 years to warm this much, primarily because of the fact that the Northern Hemisphere had huge ice sheets to buffer warming, and the fact that changes in ocean currents and Earth's orbital configuration accelerated warming in the south.

Thomsen and his colleagues have discovered that changes in ocean currents triggered by storms raging on the sea surface can alter the release of gas from the hydrate mounds.

Research conducted at The University of Texas at Austin has found that changes in ocean currents in the Atlantic Ocean influence rainfall in the Western Hemisphere, and that these two systems have been linked for thousands of years.

Changes in ocean currents are also lead to upwelling of warm water, which also increases evaporation — and thus snow.

There is some evidence tentatively suggesting that the early 20th century warming was particularly in the Arctic, possibly suggesting a change in ocean currents in the North Atlantic.

We can no longer assume that it takes generations and generations for a change in ocean currents to have a real impact on humans.

(It might be from a change in ocean currents, variation in earth orbit, whatever, it doesn't matter.)

The second would lead us to believe that solar activity and cyclical changes in ocean current systems are the primary drivers with CO2 at best a bit player.

But there's also some change in the ocean currents that's periodic so there is expected to be some cooling within the next decade or so.

Some scientists are concerned that global warming will also cause a change in ocean current patterns, shutting off the Gulf Stream.

A change in ocean currents, for example diversion of a warm pacific current to the Arctic for a prolonged period, could cause global cooling by eliminating ice in the Arctic all year.

Just for one example, if it turns out that, between melt of sea ice and Greenland ice, the North Atlantic Current slows or stops, we would expect to see fairly dramatically colder weather in Europe for a while, even thought this condition could be directly linked to results produced by GW (though in the long term, the warming would, presumably eventually overtake the cooling from change in ocean currents).

Not exact matches

Since these set of ocean currents are known to influence global climate, the researchers were interested to see if it correlated with rainfall in the Western Hemisphere, and how such a correlation could change over time.

In the current context of global warming it is important to assess the impacts that changes in ocean and climate may have on Antarctica, and reconstructing past climate fluctuations provides vital information on the responses and possible feedback mechanisms within the climate systeIn the current context of global warming it is important to assess the impacts that changes in ocean and climate may have on Antarctica, and reconstructing past climate fluctuations provides vital information on the responses and possible feedback mechanisms within the climate systein ocean and climate may have on Antarctica, and reconstructing past climate fluctuations provides vital information on the responses and possible feedback mechanisms within the climate system.

«Using a numerical climate model we found that sulfate reductions over Europe between 1980 and 2005 could explain a significant fraction of the amplified warming in the Arctic region during that period due to changes in long - range transport, atmospheric winds and ocean currents.

Another possible issue with attribution science, he says, is that the current generation of simulations simply may not be capable of capturing some of the subtle changes in the climate and oceans — a particular danger when it comes to studies that find no link to human activities.