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 greening of Sahara strengthens the West African Monsoon, which triggers a
change in the
atmospheric circulation over the entire tropics, affecting tropical cyclone activity.
Countless additional forces — melting ice sheets, shifts
in precipitation,
changes in atmospheric and oceanic
circulation, to name a few — will influence the process as well.
That would cover seasonal
changes in climate, lakes and
atmospheric circulation vital to understanding Titan as a whole.
Lyon thinks this
change in temperatures has altered
atmospheric circulation patterns, cutting off the supply of moisture to east Africa (Geophysical Research Letters, DOI: 10.1029 / 2011GL050337).
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.»
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.
Retreating sea ice
in the Iceland and Greenland Seas may be
changing the
circulation of warm and cold water
in the Atlantic Ocean, and could ultimately impact the climate
in Europe, says a new study by an
atmospheric physicist from the University of Toronto Mississauga (UTM) and his colleagues
in Great Britain, Norway and the United States.
«As a result, some
atmospheric circulations systems can not be resolved by these models, and this clearly impacts the accuracy of climate
change predictions as shown
in our study.»
«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.
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.
In the North Atlantic, more heat has been retained at deep levels as a result of
changes to both the ocean and
atmospheric circulations, which have led to the winter atmosphere extracting less heat from the ocean.
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.
A new analysis using
changes in cloud cover over the tropical Indo - Pacific Ocean showed that a weakening of a major
atmospheric circulation system over the last century is due,
in part, to increased greenhouse gas emissions.
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.
The
changes in the
atmospheric circulation include things like a stronger subtropical jet stream.
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.
Your statement that «Thus it is natural to look at the real world and see whether there is evidence that it behaves
in the same way (and it appears to, since model hindcasts of past
changes match observations very well)» seems to indicate that you think there will be no
changes in ocean
circulation or land use trends, nor any subsequent
changes in cloud responses thereto or other
atmospheric circulation.
Zhang, X., Sorteberg, A., Zhang, J., Gerdes, R. & Comiso, J. C. Recent radical shifts of the
atmospheric circulations and rapid
changes in the Arctic climate system.
However, the name «El Niño», which originally has its origin from
changes in the ocean, is linked to
changes in the
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).
The regions where droughts have occurred seem to be determined largely by
changes in SSTs, especially
in the tropics, through associated
changes in the
atmospheric circulation and precipitation.
Changes in the large - scale
atmospheric circulation are apparent.
As discussed
in the Climate chapter, large - scale
atmospheric circulation patterns connected to
changes in sea - surface temperatures strongly influence natural variations
in precipitation and temperature (e.g., Cayan et al. 1999; Mantua and Hare 2002).
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).
Changes in Hadley
circulation affects convection and thus
atmospheric moisture content and cloud cover which may
in turn affect net solar heating as well as the transfer of heat from Earth to space.
-- 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).
Natural factors contributing to past climate
change are well documented and include
changes in atmospheric chemistry, ocean
circulation patterns, solar radiation intensity, snow and ice cover, Earth's orbital cycle around the sun, continental position, and volcanic eruptions.
For the hydrological modelling of the Thames river catchment done at CEH we showed that the
changes in atmospheric circulation and precipitation caused higher peak 30 - day river flow, while flood risk mapping revealed a small increase
in flood risk for properties
in the Thames catchment.
«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 latter is not equivalent to climate
change not playing a role, because such results are obtained when the effect from a warmer atmosphere is
in the opposite direction to the effect on the
atmospheric circulation.
Whether or not these
changes in atmospheric circulation are themselves linked to global warming wasn't something the study tried to answer.
Resulting
changes in the
atmospheric temperature structure, including from surface dimming,
in turn affect regional
circulation and precipitation patterns.
Wood, R.A., A.B. Keen, J.F.B. Mitchell, and J.M. Gregory, 1999:
Changing spatial structure of the thermohaline
circulation in response to
atmospheric CO2 forcing
in a climate model.
As the planet warms from the buildup of greenhouse gases, there may be a
change in the
atmospheric circulations near the equatorial Pacific Ocean.
Stouffer, R.J., and S. Manabe, 2003: Equilibrium response of thermohaline
circulation to large
changes in atmospheric CO2 concentration.
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.
Gregory, J.M., et al., 2005: A model intercomparison of
changes in the Atlantic thermohaline
circulation in response to increasing
atmospheric CO2 concentration.
The main feedbacks between climate and the ice sheet arise from
changes in ice elevation,
atmospheric and ocean
circulation, and sea - ice distribution.
El Niño events consist — very broadly — of an area of warm water
in the equatorial Pacific coupled with
changes in atmospheric circulation.
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.
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.
So was there a climate shift after the turn of the century involving
changes in ocean and
atmospheric circulation involving cloud
changes?
In a series of papers, we've shown that the warmer temperatures observed over the WAIS are the result of those same atmospheric circulation changes, which are not related to the SAM, but rather to the remote forcing from changes in the tropical Pacific: changes in the character of ENSO (Steig et al., 2012; Ding et al., 2011; 2012
In a series of papers, we've shown that the warmer temperatures observed over the WAIS are the result of those same
atmospheric circulation changes, which are not related to the SAM, but rather to the remote forcing from
changes in the tropical Pacific: changes in the character of ENSO (Steig et al., 2012; Ding et al., 2011; 2012
in the tropical Pacific:
changes in the character of ENSO (Steig et al., 2012; Ding et al., 2011; 2012
in the character of ENSO (Steig et al., 2012; Ding et al., 2011; 2012).
The assessment considered the impacts of several key drivers of climate
change: sea level
change; alterations
in precipitation patterns and subsequent delivery of freshwater, nutrients, and sediment; increased ocean temperature; alterations
in circulation patterns;
changes in frequency and intensity of coastal storms; and increased levels of
atmospheric CO2.
The same might also be said about the NAO regarding repeated claims that the NAO index pressure differences are the cause, rather than the result, of
changes in atmospheric circulation, i.e., weather.
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.
Global
changes of the
atmospheric composition and natural
circulation changes are
in competition to each other
in determining the Arctic surface climate.