Since El Nino also has an important impact on the Asian Summer Monsoon in particular, its hard to know precisely what large -
scale changes in atmospheric circulation are due to the radiative forcing of the eruption itself, and the secondary response to that eruption of ENSO.
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.
«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.
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.
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).
Its findings suggest that
changing storm patterns and the ensuing droughts are due to a southern shift
in the Hadley cell, the large -
scale pattern of
atmospheric circulation that transports heat from the tropics to the subtropics.
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).
There are
changes in ocean and
atmospheric circulation — and cloud — at multidecadal
scales.
«
In 2007 a team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade - long time scale
In 2007 a team of NASA and university scientists has detected an ongoing reversal
in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade - long time scale
in Arctic Ocean
circulation triggered by
atmospheric circulation changes that vary on decade - long time
scales.
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.
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].
«-- A team of NASA and university scientists has detected an ongoing reversal
in Arctic Ocean
circulation triggered by
atmospheric circulation changes that vary on decade - long time
scales.
Shows that the
changes in discharge extremes are related to the regional pluriannual rainfall variability and the associated
atmospheric circulation as well as to tropical large -
scale climatic indicators
Whether the large -
scale thermodynamic environment and
atmospheric static stability (often measured by Convective Available Potential Energy, CAPE) becomes more favourable for tropical storms depends on how
changes in atmospheric circulation, especially subsidence, affect the static stability of the atmosphere, and how the wind shear
changes.
The large
scale atmospheric circulation «cells» shift polewards
in warmer periods (for example, interglacials compared to glacials), but remain largely constant as they are, fundamentally, a property of the Earth's size, rotation rate, heating and
atmospheric depth, all of which
change little.
And as the for the reason for this year's Arctic ice melt, NASA and university scientists have detected an ongoing reversal
in Arctic Ocean
circulation triggered by
atmospheric circulation changes that varies on decade - long time
scales.
The most robust evidence for steady
changes in the large -
scale atmospheric circulation include:
The Barbados annual dust cycle is linked to the cycle of dust activity
in North Africa and to seasonal
changes in large -
scale atmospheric circulation patterns.
'' [E] xtreme precipitation / flood events over Central Europe are becoming more frequent and are also
in agreement with the
changes in the large -
scale atmospheric circulation over the North Atlantic and Europe.
Scientists expect rainfall extremes to
change in Europe under future climate conditions responding to
changes in large -
scale atmospheric circulation driven by global warming.
The discharge of Eurasian rivers draining into the Arctic Ocean shows an increase since the 1930s (Peterson et al., 2002), generally consistent with
changes in temperature and the large -
scale atmospheric circulation.
Other proposed mechanisms confine the Arctic's influence on large -
scale circulation changes to the troposphere,
in which a warmer Arctic favors a wavier flow and more persistent
atmospheric blocking, which often spawns extreme weather events58, 59.