Sentences with phrase «not global ocean circulation»

«Greenland ice takes on a new role in the climate change story, not just indicating change and contributing to sea level rise, but possibly playing an important role in destabilizing regional if not global ocean circulation that naturally exchanges heat north - south,» said Jason Box of the Geological Survey of Denmark and Greenland, and a study co-author, in an email to Mashable.

Not exact matches

He believes that no one has thought of combining the two theories before because it's not an intuitive idea to look at how the effects of changing patterns of ocean circulation, which occur on time scales of thousands of years, would effect global silicate weathering, which in turn controls global climate on time scales of 100s of thousands of years.

The Isthmus of Panama plays an outsized role in ocean circulation and may be a reason that our planet currently undergoes ice ages, so the new theory could rewrite not just the history of continents and biology, but also global climate.

Climate scientists would say in response that changes in ocean circulation can't sustain a net change in global temperature over such a long period (ENSO for example might raise or lower global temperature on a timescale of one or two years, but over decades there would be roughly zero net change).

A water based system doesn't achieve much, as the oceans participate in weather and climate, but aren't the primary driving forces, which are global atmospheric circulation patterns and greenhouse gases etc..

Nevertheless, the risk of triggering ocean circulation changes as a result of global warming can not be ruled out at present (which is why you use the word «probably»), and it needs to be studied and discussed.

Changes in the Arctic affect the rest of the world, not only in obvious ways (such as the Arctic's contribution to sea - level rise), but through the Arctic's role in the global climate system, its influence on ocean circulation, and its impacts on mid-latitude weather.

If somehow and I can't possibly imagine how, there was a huge increase in circulation between the surface and the deeper layers of the ocean, that would be disastrous for global temperatures but not upwards but downwards!

A water based system doesn't achieve much, as the oceans participate in weather and climate, but aren't the primary driving forces, which are global atmospheric circulation patterns and greenhouse gases etc..

The deep ocean and surface water don't overturn because of differences in density, so the exchange is via global circulation.

What you call an «ocean pump» is not in fact a pump, but is a current that is part of what some call the global thermohaline circulation.

The changing phases of Atlantic hurricane activity are not completely understood; but there appears to be a link to fluctuations in the thermohaline circulation, the global pattern of ocean currents which in western Europe appears as the Gulf Stream.

Although previous studies have offered a general global overview of water circulation between the oceans and land, this traditional two - region model does not take into account the considerable precipitation that occurs over tropical coastal regions, including the Indonesian maritime continent, the Indian subcontinent, and the Bay of Bengal.

The interesting thing from a scientific perspective is that specifying the surface temperature in this region seems to anchor the coupled atmosphere / ocean circulations in a way that not only gives a better simulation of global average surface temperature, but also provides better simulations of the variability of key regional circulation features.

MOC stands for Meridional Overturning Circulation, and although it refers to the same global pattern of ocean currents («conveyor belt») as the thermohaline circulation, this story shows why actually MOC is the more accurate name, as it is not just... ContinuCirculation, and although it refers to the same global pattern of ocean currents («conveyor belt») as the thermohaline circulation, this story shows why actually MOC is the more accurate name, as it is not just... Continucirculation, this story shows why actually MOC is the more accurate name, as it is not just... Continue reading →

By examining the spatial pattern of both types of climate variation, the scientists found that the anthropogenic global warming signal was relatively spatially uniform over the tropical oceans and thus would not have a large effect on the atmospheric circulation, whereas the PDO shift in the 1990s consisted of warming in the tropical west Pacific and cooling in the subtropical and east tropical Pacific, which would enhance the existing sea surface temperature difference and thus intensify the circulation.

«The authors write that «the notorious tropical bias problem in climate simulations of global coupled general circulation models manifests itself particularly strongly in the tropical Atlantic,»... they state that «the climate bias problem is still so severe that one of the most basic features of the equatorial Atlantic Ocean — the eastward shoaling thermocline — can not be reproduced by most of the IPCC assessment report models,... as they describe it, «show that the bias in the eastern equatorial Atlantic has a major effect on sea - surface temperature (SST) response to a rapid change in the Atlantic Meridional Overturning Circulation (AMcirculation models manifests itself particularly strongly in the tropical Atlantic,»... they state that «the climate bias problem is still so severe that one of the most basic features of the equatorial Atlantic Ocean — the eastward shoaling thermocline — can not be reproduced by most of the IPCC assessment report models,... as they describe it, «show that the bias in the eastern equatorial Atlantic has a major effect on sea - surface temperature (SST) response to a rapid change in the Atlantic Meridional Overturning Circulation (AMCirculation (AMOC).»

Seen from this perspective, it comes as no surprise that global models fitted to reproduce global circulation can not reproduce monsoons (land - ocean interactions) and vice versa.

Regional circulation patterns have significantly changed in recent years.2 For example, changes in the Arctic Oscillation can not be explained by natural variation and it has been suggested that they are broadly consistent with the expected influence of human - induced climate change.3 The signature of global warming has also been identified in recent changes in the Pacific Decadal Oscillation, a pattern of variability in sea surface temperatures in the northern Pacific Ocean.4

Climate scientists would say in response that changes in ocean circulation can't sustain a net change in global temperature over such a long period (ENSO for example might raise or lower global temperature on a timescale of one or two years, but over decades there would be roughly zero net change).

And if the «extra heat» is being stored in the oceans, why is it that if you do a little research into thermohalene ocean circulation they talk about it slowing down because of global warming, not speeding up?

One can not develop a useful model of what drives global ocean circulation, he says, without understanding what is happening at the scale of a cubic centimeter.

Here, we present an explanation for time - invariant land — sea warming ratio that applies if three conditions on radiative forcing are met: first, spatial variations in the climate forcing must be sufficiently small that the lower free troposphere warms evenly over land and ocean; second, the temperature response must not be large enough to change the global circulation to zeroth order; third, the temperature response must not be large enough to modify the boundary layer amplification mechanisms that contribute to making φ exceed unity.

The medieval warm period and little ice age (whther they are local or global phenomena) are believed to be associated with thermohaline circulations in the atlantic; correct simulation of such long term internal oscillations in an ocean basin requires long term simulations for the ocean for which we don't really have any observational constraints.