Sentences with phrase «with changes in atmospheric circulation»

One of the most striking changes is the decline of sea ice concurrent with changes in atmospheric circulation and increased surface air temperature.

El Niño events consist — very broadly — of an area of warm water in the equatorial Pacific coupled with changes in atmospheric circulation.

Something that goes along with this change in atmospheric circulation is reduced sea ice in the region (while sea ice in Antarctica has been increasing on average, there have been significant declines off the West Antarctic coast for the last 25 years, and probably longer).

Not exact matches

Tropical widening is associated with several significant changes in our climate, including shifts in large - scale atmospheric circulation, like storm tracks, and major climate zones.

«But on top of that, changes in atmospheric circulation can favor particular weather conditions associated with heat waves.»

At that time, changes in atmospheric - oceanic circulation led to a stratification in the ocean with a cold layer at the surface and a warm layer below.

The researchers warn, however, that the future evolution of the AMO remains uncertain, with many factors potentially affecting how it interacts with atmospheric circulation patterns, such as Arctic sea ice loss, changes in solar radiation, volcanic eruptions and concentrations of greenhouse gases in the atmosphere.

The team analyzed an index of sea surface temperatures from the Bering Sea and found that in years with higher than average Arctic temperatures, changes in atmospheric circulation resulted in the aforementioned anomalous climates throughout North America.

There are strong competing effects such as changes in the large - scale atmospheric circulation, sea surface temperature changes like El Niño and La Niña and the dynamics of westerly storm tracks that all interact at the mid-latitudes,» said Stanford co-author Matthew Winnick who contributed to the study with fellow doctoral student Daniel Ibarra.

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 problem.

The El Niño - Southern Oscillation cycle refers to a fluctuation between unusually warm (El Niño) and cold (La Niña) waters in the tropical Pacific, with associated changes in atmospheric circulation (the Southern Oscillation)(Figure 2 - 5).

-- The El Niño - Southern Oscillation cycle refers to a fluctuation between unusually warm (El Niño) and cold (La Niña) waters in the tropical Pacific, with associated changes in atmospheric circulation (the Southern Oscillation)(Figure 2 - 5).

«It's important to determine where we believe that some of the recent trends in circulation could potentially be linked with climate change, rather than just natural variability,» Ted Shepherd, an atmospheric scientist at the University of Reading in the U.K., said in an email.

The top priorities should be reducing uncertainties in climate sensitivity, getting a better understanding of the effect of climate change on atmospheric circulation (critical for understanding of regional climate change, changes in extremes) and reducing uncertainties in radiative forcing — particularly those associated with aerosols.

Hoerling and Kumar (2003) attributed the drought to changes in atmospheric circulation associated with warming of the western tropical Pacific and Indian oceans, while McCabe et al. (2004) have produced evidence suggesting that the confluence of both Pacific decadal and Atlantic multi-decadal fluctuations is involved.

The lag between decreases in sea ice extent during late summer and changes in the mid-latitude atmospheric circulation during other seasons (when the recent loss of sea ice is much smaller) needs to be reconciled with theory.

Trying to infer changes in atmospheric circulation from that data would be a very tricky business — but until know, that's what oceanographers have been stuck with — and the system could use a lot of expansion.

A measure of the difference in sea level pressure between the western (e.g., Darwin, Australia) and central / eastern (e.g., Tahiti) equatorial Pacific, representative of the east - west changes in atmospheric circulation associated with the El Nino / Southern Oscillation phenomenon.

Some of these changes have a regularity within broad limits and the planet responds with a broad regularity in changes of ice, cloud, Atlantic thermohaline circulation and ocean and atmospheric circulation.

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.

Exceptions could occur in areas with the smallest reductions of extreme cold in western North America, the North Atlantic and southern Europe and Asia due to atmospheric circulation changes.

This thesis presents the results of several general circulation model simulations aimed at studying the effect of ocean circulation changes when they occur in conjunction with increased atmospheric trace gas concentrations.

That, combined with the change in location of the convection, cause drastic changes in global atmospheric circulation patterns.

A large decrease in atmospheric CH4 concentrations (several tens of parts per billion; Spahni et al., 2003) reveals the widespread signature of the abrupt «8.2 ka event» associated with large - scale atmospheric circulation change recorded from the Arctic to the tropics with associated dry episodes (Hughen et al., 1996; Stager and Mayewski, 1997; Haug et al., 2001; Fleitmann et al., 2003; Rohling and Palike, 2005).

Some of these control variables have a regularity within broad limits and the planet responds over decades to millennia with a broad regularity in changes of ice, cloud, Atlantic thermohaline circulation and ocean and atmospheric circulation.

Francis, who wasn't involved with either study, is one of the main proponents of an idea that by altering how much heat the ocean lets out, sea ice melt and Arctic warming can also change atmospheric circulation patterns, in particular by making the jet stream form larger peaks, or highs, and troughs, or lows.

When many causes all interact — and abrupt climate change candidates include the thermohaline circulation, the atmospheric circulation associated with the North Atlantic Oscillation, changes in tropical evaporation, and changes in albedo — the human mind needs some help.

The first point to dispense with is the reference to Sections 3.2.2.7 and 3.6.4 in support of the claim that «the locations of greatest socioeconomic development are also those that have been most warmed by atmospheric circulation changes.»

It has been established experimentally that, at ca 4.0 ka BP, there occurred a global change in the structure of atmospheric circulation, which coincided in time with the discharge of glacial masses from Greenland to North Atlantic and a solar activity minimum.

Precipitation changes might be significant in particular localities, especially where precipitation is affected by atmospheric circulation changes, as seems recently to have been the case with southern Scandinavian glaciers (Oerlemans, 1999).

The most interesting feature is the step change in cloud — associated with a change in ocean and atmospheric circulation — in the 1998/2001 climate shift.

We conclude that changes in atmospheric circulation amplified the solar signal and caused abrupt climate change about 2,800 years ago, coincident with a grand solar minimum.

Sea ice with its strong seasonal and interannual variability (Fig. 1) is a very critical component of the Arctic system that responds sensitively to changes in atmospheric circulation, incoming radiation, atmospheric and oceanic heat fluxes, as well as the hydrological cycle1, 2.

A shift in atmospheric circulation in response to changes in solar activity is broadly consistent with atmospheric circulation patterns in long - term climate model simulations, and in reanalysis data that assimilate observations from recent solar minima into a climate model.

This polar amplification is thought to be due largely to changes in sea ice, with some contributions from changes in snow cover, atmospheric and ocean circulation, cloud cover and the presence of soot.

«The authors write that North Pacific Decadal Variability (NPDV) «is a key component in predictability studies of both regional and global climate change,»... they emphasize that given the links between both the PDO and the NPGO with global climate, the accurate characterization and the degree of predictability of these two modes in coupled climate models is an important «open question in climate dynamics» that needs to be addressed... report that model - derived «temporal and spatial statistics of the North Pacific Ocean modes exhibit significant discrepancies from observations in their twentieth - century climate... conclude that «for implications on future climate change, the coupled climate models show no consensus on projected future changes in frequency of either the first or second leading pattern of North Pacific SST anomalies,» and they say that «the lack of a consensus in changes in either mode also affects confidence in projected changes in the overlying atmospheric circulation.»»

Here we use an ensemble of simulations with a coupled ocean — atmosphere model to show that the sea surface temperature anomalies associated with central Pacific El Niño force changes in the extra-tropical atmospheric circulation.

This section documents regional changes and slow fluctuations in atmospheric circulation over past decades, and demonstrates that these are consistent with large - scale changes in other variables, especially temperature and precipitation.

Clouds change — associated with changes in ocean and atmospheric circulation — in the short term and radically change the energy budget.

The main modulating influence on tropical cyclone activity in the western North Pacific appears to be the changes in atmospheric circulation associated with ENSO, rather than local SSTs (Liu and Chan, 2003; Chan and Liu, 2004).

Cloud is one — https://judithcurry.com/2011/02/09/decadal-variability-of-clouds/ — cloud cover obviously changes with changes in ocean and atmospheric circulation.

Identifies changes in occurrence of atmospheric circulation patterns by measuring the similarity of the cool - season atmospheric configuration that occurred in each year of the 1949 — 2015 period with the configuration that occurred during each of the five driest, wettest, warmest, and coolest years

The most likely candidate for that climatic variable force that comes to mind is solar variability (because I can think of no other force that can change or reverse in a different trend often enough, and quick enough to account for the historical climatic record) and the primary and secondary effects associated with this solar variability which I feel are a significant player in glacial / inter-glacial cycles, counter climatic trends when taken into consideration with these factors which are, land / ocean arrangements, mean land elevation, mean magnetic field strength of the earth (magnetic excursions), the mean state of the climate (average global temperature), the initial state of the earth's climate (how close to interglacial - glacial threshold condition it is) the state of random terrestrial (violent volcanic eruption, or a random atmospheric circulation / oceanic pattern that feeds upon itself possibly) / extra terrestrial events (super-nova in vicinity of earth or a random impact) along with Milankovitch Cycles.

In both GOGA and TOGA simulations, the surface temperature over sea ice can respond to both prescribed sea ice and simulated atmospheric circulation changes, which explains differences with observations

Independent evidence from multiple sources suggest — if «real» — that recent warming was all cloud changes associated with decadal changes in ocean and atmospheric circulation.

The seasonal climate may relate to changes in the ocean circulation pattern prior to 4.6 Ma that resulted in an increased temperature and atmospheric pressure gradient between the east coast of North America and the Atlantic Ocean, but this climate phase seems to be only a temporary condition, as underlying and overlying sediment are both consistent with drier conditions.

Nevertheless, even relatively steady changes in the atmospheric circulation may prove important for understanding past and future abrupt climate change if such changes are coincident with large horizontal gradients in surface climate.

Loeb (2012) shows that large changes in the Earth's energy balance at top of atmosphere occur with changes in ocean and atmospheric circulation.

Wang et al. (2012b) force the dynamical core of an atmospheric general circulation model with warming in the tropical troposphere that mimics the effects of climate change there.

Climate models disagree in pattern and magnitude of projected changes in atmospheric circulation and climate variability, particularly for precipitation (e.g., with respect to the Indian and West African monsoons).