Sentences with phrase «change global circulation»

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.

For example, reflecting sunlight would likely reduce the Earth's average temperature but could also change global circulation with potentially serious consequences such as changing storm tracks and precipitation patterns throughout the world.

Anderson and Allen suggest that the changes reflect an influx of moisture from the Pacific Ocean, probably due to changing global circulation (Science, vol 260, p 1920).

Not exact matches

This «would create a persistent layer of black carbon particles in the northern stratosphere that could cause potentially significant changes in the global atmospheric circulation and distributions of ozone and temperature,» they concluded.

The poles are on the front lines of climate change — melting ice, thawing permafrost, warming temperatures — but they are also at the forefront of weather patterns, global oceanic circulation and the marine food chain.

Changes in polar vortex winds high in the stratosphere can alter the global conveyor belt of ocean circulation.

«This makes one suspect that if global climate change is changing these larger circulations, then there is a connection between a global [variability] and tornado activity.»

Gross says that the most important processes affecting day length are changes in the weather, especially unusual variations in the strength and direction of the winds, which bring on alterations in the global circulation of the atmosphere and ocean.

World weather patterns will also start to change, as a frigid Antarctic continent and the icy ocean currents that surround it play an important role in global atmospheric and oceanic circulation.

«This emphasizes the importance of large - scale energy transport and atmospheric circulation changes in restoring Earth's global temperature equilibrium after a natural, unforced warming event,» Li said.

«Northwest Atlantic Ocean may get warmer, sooner: High resolution global climate model shows much faster warming and changing ocean circulation.»

Their research, published in Nature Climate Change on June 29, is the first attempt to examine and document these changes in the air - sea heat exchange in the region — brought about by global warming — and to consider its possible impact on oceanic circulation, including the climatologically important Atlantic Meridional Overturning Ccirculation, including the climatologically important Atlantic Meridional Overturning CirculationCirculation.

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.

«Formation of coastal sea ice in North Pacific drives ocean circulation, climate: New understanding of changes in North Pacific ocean circulation over the past 1.2 million years could lead to better global climate models.»

By analyzing these records, Knudson and Ravelo found that the strength of the overturning circulation in the North Pacific is inherently linked to global climate changes, but not in the way scientists had previously thought.

And what we see is both how complex climate changes can be and how profound an effect changing patterns of ocean circulation can have on global climate states, if looked at on a geological time scale.»

Although the rising average global surface temperature is an indicator of the degree of disruption that we have imposed on the global climate system, what's actually happening involves changes in circulation patterns, changes in precipitation patterns, and changes in extremes.

Those three papers explore the global ocean microbiome and plankton interaction networks, as well as how plankton communities change across a key ocean circulation choke point off South Africa.

«Climate changes predicted by the global circulation models would cause several percent of the Mexican population to move north [if] all other factors are held constant.»

They were Jorge Sarmiento, an oceanographer at Princeton University who constructs ocean - circulation models that calculate how much atmospheric carbon dioxide eventually goes into the world's oceans; Eileen Claussen, executive director of the Pew Center for Global Climate Change in Washington, D.C.; and David Keith, a physicist with the University of Calgary in Alberta who designs technological solutions to the global warming prGlobal Climate Change in Washington, D.C.; and David Keith, a physicist with the University of Calgary in Alberta who designs technological solutions to the global warming prglobal warming problem.

New understanding of changes in North Pacific ocean circulation over the past 1.2 million years could lead to better global climate models

It was further supported by the Federal Ministry of Education and Research as part of the RACE - Regional Atlantic Circulation and Global Change project.

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A study relating to this — «Our study confirms many changes seen in upper Arctic Ocean circulation in the 1990s were mostly decadal in nature, rather than trends caused by global warming,» said Morison.

In applying them, they found that a more realistic representation of the marine ecosystem helped the ocean to take up and store carbon at similar rates regardless of global changes in physical properties, like temperature, salinity and circulation.

Wind fields are capable of great volatility and very rapid global - scale teleconnections, and they are efficient generators of oceanic circulation changes and (more speculatively) of multiple states relative to great ice sheets.

(Top left) Global annual mean radiative influences (W m — 2) of LGM climate change agents, generally feedbacks in glacial - interglacial cycles, but also specified in most Atmosphere - Ocean General Circulation Model (AOGCM) simulations for the LGM.

The precise connections between global warming and circulation changes are still being investigated and our understanding will evolve accordingly.

Quick recovery is consistent with the Southern Ocean - centric picture of the global overturning circulation (Fig. 4; Talley, 2013), as the Southern Ocean meridional overturning circulation (SMOC), driven by AABW formation, responds to change in the vertical stability of the ocean column near Antarctica (Sect. 3.7) and the ocean mixed layer and sea ice have limited thermal inertia.

Previously, Kelly was a Postdoctoral Fellow and Research Associate at the University of Washington and the University of Victoria in British Columbia, Canada where she studied the role of the changing Arctic sea ice cover on global circulation, weather, and climate using a hierarchy of numerical global climate models.

In the paper Gray makes many extravagant claims about how supposed changes in the THC accounted for various 20th century climate changes («I judge our present global ocean circulation conditions to be similar to that of the period of the early 1940s when the globe had shown great warming since 1910, and there was concern as to whether this 1910 - 1940 global warming would continue.

Whether or not these changes in atmospheric circulation are themselves linked to global warming wasn't something the study tried to answer.

Significant changes in tree cover in Eurasia could cause an energy imbalance between the Northern and Southern Hemispheres, shifting the entire global circulation of the atmosphere, including the location of rainfall in the tropics.»

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).

«This expedition offered insights into Earth's history, ranging from mountain - building in New Zealand to the shifting movements of Earth's tectonic plates to changes in ocean circulation and global climate.»

Included in resource are the following topics: Natural causes of climate change Evidence of climate change Global Warming Causes and effects of climate change Global atmospheric circulation Tropical storms causes, characteristics, location and frequency Causes of EL Nino Effects of the Big Dry Adaptation to drought At the end of the resources are pupil booklets.

Included: The Quaternary period Evidence for climate change and advantages / disadvantages Human / natural causes of climate change Potential causes of climate change: extreme weather and sea level rise Global circulation of the atmosphere El Nino / La Nina Tropical storms, formation and distribution Causes of droughts / location Extreme weather case study caused by El Nino - The Big Dry, Australia

This global phenomenon of image circulation possesses an extraordinary transformative potential, and, this weekend, galleries worldwide exemplify the power of photography to spark social, environmental and cultural change.

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.

As the authors point out, even if the whole story comes down to precipitation changes which favor ablation, the persistence of these conditions throughout the 20th century still might be an indirect effect of global warming, via the remote effect of sea surface temperature on atmospheric circulation.

Global changes of the atmospheric composition and natural circulation changes are in competition to each other in determining the Arctic surface climate.

However, if the loss of Arctic Sea ice has significantly changed global atmospheric circulation patterns, then we are dealing with a different system that has only been in existence since 2007, and we do not know how often to expect crop failures.

That matters because the trickiest part of global climate models appears to be how they handle ocean - atmosphere interactions, and I really have no idea how well they link changes in local wind - driven upwelling to the net thermohaline circulation.

~ Our study confirms many changes seen in upper Arctic Ocean circulation in the 1990s were mostly decadal in nature, rather than trends caused by global warming,» / / www.jpl.nasa.gov/news/news.cfm?release=2007-131 [ANDY REVKIN comments: That's precisely what I wrote in the Science Times feature on Arctic ice in September (link is in the post).

He tells us global warming will disrupt the circulation of the ocean waters, dramatically changing climates, throwing the world food supply into chaos.

Climate change related to a global warming is more than just temperature and precipitation - massive atmospheric circulations change too, and these changes can have consequences.

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.

There is no question that the changes going on are global in scope and the Walker circulation linking the Pacific and Atlantic plays an important role, but I have to be very very skeptical to say the Atlantic is the driver.

The Nature study is talking about changes associated with ocean circulation even while CO2, and the global imbalance, and global temperature, is increasing.

It also provides the background state against which El Niño events take place, and so changes in the Walker circulation should form an intrinsic part of thinking about how global warming will affect El Niño.