This would have an impact
on global atmospheric circulation and thus global climate.
The temperatures in the central Pacific have the biggest impact
on the global atmospheric circulation, and therefore the biggest impacts on global weather, says Timmerman, who has been warning that this El Niño is likely to be a record - breaker.
The timing of such uplift is important in helping scientists to understand how mountains form, how they erode and what impact this may have
on global atmospheric circulation patterns and climate.
Not exact matches
Scientists at Pacific Northwest National Laboratory showed that
global climate models are not accurately depicting the true depth and strength of tropical clouds that have a strong hold
on the general
circulation of
atmospheric heat and the
global water balance.
To derive the climate projections for this assessment, we employed 20 general
circulation models to consider two scenarios of
global carbon emissions: one where
atmospheric greenhouse gases are stabilized by the end of the century and the other where it grows
on its current path (the stabilization [RCP4.5] and business - as - usual [RCP8.5] emission scenarios, respectively).
Includes detailed information
on the characteristics of the atmosphere, factors affecting wind,
global atmospheric circulation systems,
global pressure patterns and Hadley, Ferrel and Polar cells.
Our estimate is based primarily
on our review of a series of calculations with three - dimensional models of the
global atmospheric circulation, which is summarized in Chapter 4.
On global vs. local, how about the
global model prediction of a deepening and widening of the tropical
atmospheric circulation, which leads to the Hadley cell expansion and the projection of the dry zones expanding polewards.
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.
We could also insist
on the mode of
atmospheric circulation as described by Marcel Leroux demonstrating the fallacy of the
Global warming argument through the understanding of meteorological data.
My research is in Dr. Gudrun Magnusdottir's Modeling Lab, where we are trying to understand the critical relationships between external processes and
atmospheric / oceanic
circulations on the
global climate system.
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 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.»»
Blue - Action will through its concerted efforts therefore contribute to the improvement of climate models to represent Arctic warming realistically and address its impact
on regional and
global atmospheric and oceanic
circulation.
And noting «zonal mean - winds constitute an important element of
global atmospheric circulation,» they go
on to suggest,» if the solar cycle can influence zonal mean - winds, then it may affect other features of
global climate as well, including oscillations such as the NAO and MJO, of which zonal winds are an ingredient» Thus, «the cause of this forcing» as they describe it, «likely involves some combination of solar wind, galactic cosmic rays, ionosphere - Earth currents and cloud microphysics.»
The
global pattern of
atmospheric circulation on Mars shows many superficial similarities to that of Earth, but the root causes are very different.
In the tropics, these Atlantic / Pacific differences modulate the
global Walker
circulation on decadal timescales and then affect the low - frequency variability of the high - pressure ridge off the California coast through
atmospheric teleconnections.
Thirdly, Earth system models have begun to incorporate more realistic and dynamic vegetation components, which quantify positive and negative biotic feedbacks by coupling a dynamic biosphere to
atmospheric circulations with a focus
on the
global carbon cycle (Friedlingstein et al., 2003, 2006; Cox et al., 2004, 2006).
Opening of the Drake Passage surely affected ocean
circulation around Antarctica, but efforts to find a significant effect
on global temperature have relied
on speculation about possible effects
on atmospheric CO2 [37].
Advance research
on the interactions between arctic sea ice and
global physical systems such snow cover extent, ocean and
atmospheric circulation patterns, and mid-latitude effects.
While
on first thought this might seem undesirable because we are looking for a
global number, it might make sense to separate them due to the large difference in land / ocean ratio and the fact that
atmospheric circulation patterns isolate them WRT shorter term changes.
Even seemingly small changes in
global temperature have far - reaching effects
on sea level,
atmospheric circulation, and weather patterns around the globe.
The estimated GST drop due to fine dust from the actual
atmospheric nuclear explosions based
on the published simulation results by other researchers (a single column model and Atmosphere - Ocean General
Circulation Model) has served to explain the stagnation in
global warming.
Multi-decadal regime shift — chaotic — unpredictable — involving abrupt shifts in ocean and
atmospheric circulation — show the dynamical mechanism at the core of climate
on a
global scale.
From a report described
on the IPY (International Polar Year) site dated 2/25/09: «Snow and ice are declining in both polar regions, affecting human livelihoods as well as local plant and animal life in the Arctic, as well as
global ocean and
atmospheric circulation and sea level.»
1) Abstract «Such changes could have significant ramifications for
global sea level, the ocean thermohaline
circulation, native coastal communities, and commercial activities, as well as effects
on the
global surface energy and moisture budgets,
atmospheric and oceanic
circulations, and geosphere - biosphere feedbacks.
The latter, which isolated Antarctica within a cold polar sea, produced
global effects
on atmospheric and oceanic
circulation.