First, the west - to - east
jet stream appears to be slowing down, which allows weather patterns to persist in certain areas for longer.
Changes in
the jet stream appear to be a secondary factor, and the likely impacts are far less certain.
Not exact matches
The strength and path of the North Atlantic
jet stream and the Greenland blocking phenomena
appear to be influenced by increasing temperatures in the Arctic which have averaged at least twice the global warming rate over the past two decades, suggesting that those marked changes may be a key factor affecting extreme weather conditions over the UK, although an Arctic connection may not occur each year.
Whereas the
jets appeared to have been around for only 1,000 years or so, the oldest outflows had been
streaming from the nascent stars for more than 100,000 years.
«It's like video -
streaming services not only predicting what you would like to watch in the future, but also your current age, based on your viewing preferences,» said Adam Miller of NASA's
Jet Propulsion Laboratory in Pasadena, California, lead author of a new report on the findings
appearing in the Astrophysical Journal.
Wind patterns and ocean currents are also being negatively affected by the ongoing spraying and manipulation of natural wind currents (the ionosphere heater installations around the globe also
appear to be routinely manipulating the
jet stream).
And science is emerging suggesting a link between the melting of Arctic sea ice on one hand and faster warming in the region and changes to the northern hemisphere
jet stream on the other, explaining why some weather systems
appear to get «stuck in place» — to often - devastating effect.
[citation needed] However, this
appears not to be so except perhaps locally in
jet stream regions in the stratosphere.
And the «weather» right now, what with the
jet stream way south and a weak lingering LaNina still haunting, one system after another dropping tons of precip on the SW, sure doesn't
appear to be fitting in with their projections.
Cornell and Rutgers researchers report in the March issue of Oceanography that the severe loss of summertime Arctic sea ice - attributed to greenhouse warming -
appears to enhance Northern Hemisphere
jet stream meandering, intensify Arctic air mass invasions toward middle latitudes, and increase the frequency of atmospheric blocking events like the one that steered Hurricane Sandy west into the densely populated New York City area.
In a new study
appearing in the June edition of the journal Icarus, scientists used images collected over several years by NASA's Cassini spacecraft to discover that the heat from within the planet powers the
jet streams.
The PDO phase that we
appear to have entered will act to steer the
jet stream further north over the Western United States.
From the quotes available it
appears she said an increase in heavy precipitation events and persistent storm tracks further south is consistent with global warming projections — not that global warming would cause the
jet stream to «get stuck.»