«We think the recent snowy winters could be caused by the retreating Arctic ice altering
atmospheric circulation patterns by weakening westerly winds, increasing the amplitude of the jet stream and increasing the amount of moisture in the atmosphere,»
Local and regional changes in the character of precipitation also depend a great deal
on atmospheric circulation patterns determined by El Niño, the North Atlantic Oscillation (NAO; a measure of westerly wind strength over the North Atlantic in winter) and other patterns of variability.
These aspects of precipitation generally exhibit large natural variability, and El Niño and changes in
atmospheric circulation patterns such as the North Atlantic Oscillation have a substantial influence.
«Our future studies will look to compare the role of the AMO compared to Arctic sea ice anomalies, which have also been shown to
affect atmospheric circulation patterns and promote colder, more extreme winters.»
The large interannual to decadal hydroclimatic variability in winter precipitation is highly influenced by sea surface temperature (SST) anomalies in the tropical Pacific Ocean and associated changes in large - scale atmospheric circulation patterns [16].
Although most aerosols are carried up by the
same atmospheric circulation patterns, their chemical and physical properties determine whether or not they become «cloud condensation nuclei,» which are the points around which droplets form before they become cloud droplets.
Glaciers and snowpack, the key cryospheric components of high mountain systems, are sensitive to increases in temperature,
shifting atmospheric circulation patterns, and varying amounts and forms of precipitation.
Reproducing a subjective classification scheme
for atmospheric circulation patterns over the united kingdom using a neural network, In Proceedings of the International Conference on Artificial Neural Networks (ICANN - 96), 281 - 286.
And when it lands on glaciers it accelerates their melting... By
analysing atmospheric circulation patterns, Dr Marinoni and her colleagues found that winds could bring soot and dust from as far away as Europe, the Middle East and North Africa.
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).
Note that the extreme low forecast comes from a heuristic contribution that considered the amount of multiyear ice over the winter of 2016/2017 together with the mean
winter atmospheric circulation pattern (Morison) whereas the extreme high forecast comes from the pre-operational US Navy Earth System Model (NESM).
These climate indices are correlated with population dynamics [8], [9] because they
reflect atmospheric circulation patterns which regulate large scale oceanographic processes and ecosystem productivity [10], [11].
An expanding area of research since the SAR is the consideration of whether climate change may be realised as preferred modes of non-linear naturally
occurring atmospheric circulation patterns, or so - called weather regimes as proposed by Palmer (1999).
Investigates northeastern
Pacific atmospheric circulation patterns that have historically (1949 — 2015) been associated with cool - season (October - May) precipitation and temperature extremes in California
Using a state - of - the - art data assimilation system and surface pressure observations, the Twentieth Century Reanalysis Project is generating a six - hourly, four - dimensional global atmospheric dataset spanning 1851 to 2014 to place
current atmospheric circulation patterns into a historical perspective.
There is growing observational data, physical analysis of possible mechanisms, and model agreement that human - caused climate change is
strengthening atmospheric circulation patterns in a way «which implies that the periodic and inevitable droughts California will experience will exhibit more severity...» «there is a traceable anthropogenic warming footprint in the enormous intensity of the anomalous ridge during winter 2013 — 2014 and the associated drought.»
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.
Previous analyses of CMIP5 simulations have identified several climate models that do a credible job of simulating the current climate of this region (particularly in terms of
overall atmospheric circulation patterns and annual cycle of precipitation).
My point, which I hope you would likewise concede, is that even with a weakened or shut - off THC, western Europe would still remain warm relative to other land masses at the same latitudes (possibly even warmer than British Columbia, as it is now), based primarily
on atmospheric circulation patterns.
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