Antarctic sea - ice expansion between 2000 and 2014 driven by tropical
Pacific decadal climate variability.
«Antarctic Sea - Ice Expansion between 2000 and 2014 Driven by Tropical
Pacific Decadal Climate Variability.»
Not exact matches
This
variability includes the
Pacific Decadal Oscillation (PDO), a long - lived El Niño - like pattern of
Pacific climate variability that works like a switch every 30 years or so between two different circulation patterns in the North
Pacific Ocean.
Goddard thinks it may be an early indication of a big shift in the
Pacific Decadal Oscillation (PDO), a kind of long - term El Niño - like pattern of
climate variability.
He thinks their movement may be an early indication of a big shift in the
Pacific Decadal Oscillation (PDO), a long - term pattern of
climate variability.
On
decadal time scales, annual streamflow variation and precipitation are driven by large - scale patterns of climate variability, such as the Pacific Decadal Oscillation (see teleconnections description in Climate chapter)(Pederson et al. 2011a; Seager and Hoerling
decadal time scales, annual streamflow variation and precipitation are driven by large - scale patterns of
climate variability, such as the Pacific Decadal Oscillation (see teleconnections description in Climate chapter)(Pederson et al. 2011a; Seager and Hoerling
climate variability, such as the
Pacific Decadal Oscillation (see teleconnections description in Climate chapter)(Pederson et al. 2011a; Seager and Hoerling
Decadal Oscillation (see teleconnections description in
Climate chapter)(Pederson et al. 2011a; Seager and Hoerling
Climate chapter)(Pederson et al. 2011a; Seager and Hoerling 2014).
-- The
Pacific Decadal Oscillation is a pattern of ocean - atmospheric
climate variability across the mid-latitude
Pacific Ocean.
The
Pacific Decadal Oscillation is a pattern of ocean - atmospheric
climate variability across the mid-latitude
Pacific Ocean.
Yeh, S. - W., and B.P. Kirtman, 2004:
Decadal North
Pacific sea surface temperature
variability and the associated global
climate anomalies in a coupled GCM.
His research concerns understanding global
climate and its variations using observations and covers the quasi biennial oscillation,
Pacific decadal oscillation and the annular modes of the Arctic oscillation and the Antarctic oscillation, and the dominant spatial patterns in month - to - month and year - to - year
climate variability, including the one through which El Niño phenomenon in the tropical
Pacific influences
climate over North America.
In Atmospheric Controls On Northeast
Pacific Temperature
Variability And Change, 1900 — 2012, Johnstone 2014 showed the
Pacific Decadal Oscillation can explain
climate change in the
Pacific northeast without invoking greenhouse gases.
Ocean and atmospheric indices — in this case the El Niño Southern Oscillation, the
Pacific Decadal Oscillation, the North Atlantic Oscillation and the North
Pacific Oscillation — can be thought of as chaotic oscillators that capture the major modes of
climate variability.
The roughly thirty year period over which we have reliable reanalyses and satellite measurements is too short to rule out the influence of natural
climate variability, such as the
Pacific Decadal Oscillation.
«Externally Forced and Internally Generated
Decadal Climate Variability Associated with the Interdecadal
Pacific Oscillation.»
The study by Macias & Johnson (2008) provides not only evidence for the link between
decadal - scale changes in the teleconnection patterns (e.g. the Pacific Decadal Oscillation (PDO) index) and the increased fire frequency in the late twentieth century but also an explanation of why the pattern of fire variability and fire - climate relationships changes at different time scales from centennial / decadal to interannu
decadal - scale changes in the teleconnection patterns (e.g. the
Pacific Decadal Oscillation (PDO) index) and the increased fire frequency in the late twentieth century but also an explanation of why the pattern of fire variability and fire - climate relationships changes at different time scales from centennial / decadal to interannu
Decadal Oscillation (PDO) index) and the increased fire frequency in the late twentieth century but also an explanation of why the pattern of fire
variability and fire -
climate relationships changes at different time scales from centennial /
decadal to interannu
decadal to interannual.....
Ocean and atmospheric indices — in this case the El Niño Southern Oscillation, the
Pacific Decadal Oscillation, the North Atlantic Oscillation and the North
Pacific Oscillation — can be thought of as chaotic oscillators that capture the major modes of northern hemisphere
climate variability.
«The evidence presented here suggests that most of that warming might well have been caused by cloud changes associated with a natural mode of
climate variability: the
Pacific Decadal Oscillation.»
The influence of large - scale
climate modes of
variability (the
Pacific Decadal Oscillation (PDO) and the El Niño - Southern Oscillation (ENSO)-RRB- on APF magnitude is also assessed, and placed in context with these more localized controls.
Ocean and atmospheric indices — in this case the El Niño Southern Oscillation, the
Pacific Decadal Oscillation, the North Atlantic Oscillation and the North
Pacific Oscillation — can be thought of as chaotic oscillators that capture the major modes of NH
climate variability.
However, direct attribution of these changes to
climate change is made difficult by long - term patterns of
variability that influence productivity of different parts of the Ocean (e.g.,
Pacific Decadal Oscillation).
«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.»»
This study shows that the coupled
climate models have mixed results in reproducing the spatial and temporal characteristics of major observed
Pacific climate patterns of
variability (e.g., the
Pacific Decadal Oscillation (PDO) and El Niño).
Decadal variations in the North
Pacific Gyre Oscillation are characterized by a pattern of sea surface temperature anomalies that resemble the central
Pacific El Niño, a dominant mode of interannual
variability with far - reaching effects on global
climate patterns5, 6, 7.
The model is actually based on ocean and atmospheric indices — in this case the El Niño Southern Oscillation, the
Pacific Decadal Oscillation, the North Atlantic Oscillation and the North
Pacific Oscillation — and can be thought of as chaotic oscillators that capture the major modes of
climate variability.
Meehl, G. A., A. Hu, and B.D. Santer, 2008: The mid-1970s
climate shift in the Pacific and the relative roles of forced versus inherent decadal variability, J. Climate, in
climate shift in the
Pacific and the relative roles of forced versus inherent
decadal variability, J.
Climate, in
Climate, in press.
Over these shorter periods, there are many modes of
climate variability, usually involving semi-structured oscillations in sea surface temperatures, like the El Niño - Southern Oscillation, the
Pacific Decadal Oscillation, the Arctic Oscillation, and so on.
The «
Pacific Decadal Oscillation» (PDO) is a long - lived El Niño - like pattern of
Pacific climate variability.
Now forced to explain the warming hiatus, Trenberth has flipped flopped about the PDO's importance writing «One of the things emerging from several lines is that the IPCC has not paid enough attention to natural
variability, on several time scales,» «especially El Niños and La Niñas, the
Pacific Ocean phenomena that are not yet captured by
climate models, and the longer term
Pacific Decadal Oscillation (PDO) and Atlantic Multidecadal Oscillation (AMO) which have cycle lengths of about 60 years.»
Together the oceanic upwelling in the north and south
Pacific and the movement of atmospheric mass from and to the poles provide almost all of the
decadal variability in Earth's
climate.
Over the past 60 years, Alaska has warmed more than twice as rapidly as the rest of the United States, with state - wide average annual air temperature increasing by 3 °F and average winter temperature by 6 °F, with substantial year - to - year and regional
variability.1 Most of the warming occurred around 1976 during a shift in a long - lived
climate pattern (the
Pacific Decadal Oscillation [PDO]-RRB- from a cooler pattern to a warmer one.
The
Pacific and the La Niñas the pause is part of natural
climate variability, tied to a La - Niña - like
decadal cooling.
Regional circulation patterns have significantly changed in recent years.2 For example, changes in the Arctic Oscillation can not be explained by natural variation and it has been suggested that they are broadly consistent with the expected influence of human - induced
climate change.3 The signature of global warming has also been identified in recent changes in the
Pacific Decadal Oscillation, a pattern of
variability in sea surface temperatures in the northern
Pacific Ocean.4
What was done, was to take a large number of models that could not reasonably simulate known patterns of natural behaviour (such as ENSO, the
Pacific Decadal Oscillation, the Atlantic Multidecadal Oscillation), claim that such models nonetheless accurately depicted natural internal
climate variability, and use the fact that these models could not replicate the warming episode from the mid seventies through the mid nineties, to argue that forcing was necessary and that the forcing must have been due to man.
Meehl, G. A., Hu, A., Arblaster, J. M., Fasullo, J. T. & Trenberth, K. E. Externally forced and internally generated
decadal climate variability associated with the Interdecadal
Pacific Oscillation.
Meehl, G. A., Hu, A., Arblaster, J. M., Fasullo, J. Y. & Trenberth, K. E. Externally forced and internally generated
decadal climate variability associated with the Interdecadal
Pacific Oscillation.
While there still is quite a bit of uncertainty surrounding the effects of the PDO on Earth's
climate, the U.K. Met Office says that «
decadal variability in the
Pacific Ocean may have played a substantial role in the recent pause in global surface temperature rise.»
The region is strongly affected by seasonal and interdecadal
climate variability, such as El Niño events and the
Pacific Decadal Oscillation.
The
Pacific sst drive most
decadal to cenntennial
variability in
climate.
Meehl, G. A., Hu, A., Arblaster, J., Fasullo, J. & Trenberth, K. E. Externally forced and internally generated
decadal climate variability associated with the Interdecadal
Pacific Oscillation.
This can be seen in the
Pacific Ocean — a very significant driver of interannual to
decadal hydrologic and
climate variability — in changes in hydrology and ocean states around 1910, the mid 1940's, the late 1970's and after 1998.
This
variability includes the
Pacific Decadal Oscillation (a long - lived El Niño - like pattern of
Pacific climate variability) and anthropogenic pollutants, which act to modify the
Pacific Decadal Oscillation.
Never mind the fact that those same models were unable to reproduce large scale natural
climate variability such as the
Pacific Decadal Oscillation, the Atlantic Multidecadal Oscillation and ENSO.