Sentences with phrase «decadal oscillation variation»

On shorter time scales, and layered on top of Pacific Decadal Oscillation variation, the Pacific North American pattern and the El Niño - Southern Oscillation cycles (see Climate chapter) can also affect variation in snowpack.

Not exact matches

The middle globe shows a drop in levels west of Mexico, due to a cyclical climate variation called the Pacific Decadal Oscillation.

Finally, the El Niño - Southern Oscillation, Pacific Decadal Oscillation and Atlantic Multidecadal Oscillation each contribute to large variations in MHWs both regionally and globally.

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 Hoerlingdecadal 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 HoerlingDecadal Oscillation (see teleconnections description in Climate chapter)(Pederson et al. 2011a; Seager and Hoerling 2014).

Drought variations in the study area significantly correlated with sea surface temperatures (SSTs) in North Pacific Ocean, suggesting a possible connection of regional hydroclimatic variations to the Pacific Decadal Oscillation (PDO).

Spectral analyses suggested that the reconstructed annual mean temperature variation may be related to large - scale atmospheric — oceanic variability such as the solar activity, Pacific Decadal Oscillation (PDO) and El Niño — Southern Oscillation (ENSO).

Over the last 30 years of direct satellite observation of the Earth's climate, many natural influences including orbital variations, solar and volcanic activity, and oceanic conditions like El Nino (ENSO) and the Pacific Decadal Oscillation (PDO) have either had no effect or promoted cooling conditions.

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 their paper Decadal Variations in the Global Atmospheric Land Temperatures, they find that the largest contributor to global average temperature variability on short (2 - 5 year) timescales in not the El Nino - Southern Oscillation (ENSO)(as everyone else believes), but is actually the Atlantic Multidecadal Oscillation (AMO).

(«On decadal to century timescales, climate dynamics — the complex interplay of multiple external forcings (rapid and slow), the spectrum of atmospheric and ocean circulation oscillations, interactions with biosphere — determines variations in climate.»)

Mike's work, like that of previous award winners, is diverse, and includes pioneering and highly cited work in time series analysis (an elegant use of Thomson's multitaper spectral analysis approach to detect spatiotemporal oscillations in the climate record and methods for smoothing temporal data), decadal climate variability (the term «Atlantic Multidecadal Oscillation» or «AMO» was coined by Mike in an interview with Science's Richard Kerr about a paper he had published with Tom Delworth of GFDL showing evidence in both climate model simulations and observational data for a 50 - 70 year oscillation in the climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a finding recently reaffirmed by a study published in Nature), in showing how changes in radiative forcing from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 meaOscillation» or «AMO» was coined by Mike in an interview with Science's Richard Kerr about a paper he had published with Tom Delworth of GFDL showing evidence in both climate model simulations and observational data for a 50 - 70 year oscillation in the climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a finding recently reaffirmed by a study published in Nature), in showing how changes in radiative forcing from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 meaoscillation in the climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a finding recently reaffirmed by a study published in Nature), in showing how changes in radiative forcing from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measurements).

Trenberth emphasizes the role of long - term variations of ENSO, called pacific - decadal oscillation (PDO).

But efforts to tease out the impact of human - driven global warming in the region are complicated by the big influence around the Bering Sea of natural variations in ocean conditions, including the Pacific Decadal Oscillation.

That is precisely the problem when C&W indulge in unphysical speculation that the muti - decadal temperature oscillations evident in many regions of the globe are «generated and sustained» by sea - ice variations in the Eurasian Arctic.

Despite this increasing greenhouse gas - induced warming of the oceans, the ocean doesn't warm in a linear manner due to a number of factors, one of these being a natural decadal - scale variation in the way heat is mixed into the oceans by winds - the Interdecadal Pacific Oscillation (IPO).

The indicator is nevertheless sensitive to longer - term variations in surface air temperature such as those associated with decadal and multi-decadal oceanic oscillations.

The models exhibit large variations in the rate of warming from year to year and over a decade, owing to climate variations such as ENSO, the Atlantic Multi-Decadal Oscillation and Pacific Decadal Oscillation.

The variations are strongly correlated with the similar decadal fluctuations observed in the Atlantic Multidecadal Oscillation index, and less so with the El Nino Southern Oscillation index.

ENSO (El Nino Southern Oscillation) and PDO (Pacific Decadal Oscillation) help to explain short - term variations, but have no long - term trend, warming or otherwise.

These include solar - related chemical - based UV irradiance - related variations in stratospheric temperatures and galactic cosmic ray - related changes in cloud cover and surface temperatures, as well as ocean oscillations, such as the Pacific Decadal Oscillation and the North Atlantic Oscillation that significant affect the climate.

Even after this is done, some longer term natural variations remain, most notably a phenomenon called the Pacific Decadal Oscillation (PDO) that causes irregular shifts in the climate roughly every few decades.

Natural variables like the Pacific Decadal Oscillation (PDO) and the Atlantic Multidecadal Oscillation (AMO) are cited as the causes for these variations.

Large - scale climate variations, such as the Pacific Decadal Oscillation (PDO), El Niño - Southern Oscillation (ENSO) and North Atlantic Oscillation (NAO), are occurring at the same time as the global climate is changing.

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.

Variations in the Atlantic Multi-decadal Oscillation (see Section 3.6.6 for a more detailed discussion) could account for some of the evolution of global and hemispheric mean temperatures during the instrumental period (Schlesinger and Ramankutty, 1994; Andronova and Schlesinger, 2000; Delworth and Mann, 2000); Knight et al. (2005) estimate that variations in the Atlantic Multi-decadal Oscillation could account for up to 0.2 °C peak - to - trough variability in NH mean decadal temVariations in the Atlantic Multi-decadal Oscillation (see Section 3.6.6 for a more detailed discussion) could account for some of the evolution of global and hemispheric mean temperatures during the instrumental period (Schlesinger and Ramankutty, 1994; Andronova and Schlesinger, 2000; Delworth and Mann, 2000); Knight et al. (2005) estimate that variations in the Atlantic Multi-decadal Oscillation could account for up to 0.2 °C peak - to - trough variability in NH mean decadal temvariations in the Atlantic Multi-decadal Oscillation could account for up to 0.2 °C peak - to - trough variability in NH mean decadal temperatures.

The decadal variations of the AMOC obtained in that way are shown to precede the observed decadal variations in basin - wide North Atlantic sea surface temperature (SST), known as the Atlantic Multidecadal Oscillation (AMO) which strongly impacts societally important quantities such as Atlantic hurricane activity and Sahel rainfall.

«The Pacific Decadal Oscillation is a climate index based upon patterns of variation in sea surface temperature of the North Pacific from 1900 to the present (Mantua et al. 1997).

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

These are linked to decadal variations in atmospheric circulation, SST and ocean circulation throughout the whole Pacific Basin in the Inter-decadal Pacific Oscillation (IPO; Trenberth and Hurrell, 1994; Gershunov and Barnett, 1998; Folland et al., 2002; McPhaden and Zhang, 2002; Deser et al., 2004).

On decadal to century timescales, climate dynamics — the complex interplay of multiple external forcings (rapid and slow), the spectrum of atmospheric and ocean circulation oscillations, interactions with biosphere — determines variations in climate.

I have already provided examples of observed real world shifts in global temperature trend going back to 1960 that match very well with shifts in the balance between solar variation and the net global effect of all the separate oceanic oscillations (especially the Pacific Decadal Oscillation which is by far the largest).

Natural factors such as the Sun (84 papers), multi-decadal oceanic - atmospheric oscillations such as the NAO, AMO / PDO, ENSO (31 papers), decadal - scale cloud cover variations, and internal variability in general have exerted a significant influence on weather and climate changes during both the past and present.

The natural causes of climate variations that have time scales (century, decadal; e.g. Schwabe sunspot cycles, average solar output during the satellite measuring era,, ENSO / PDO / AMO and the rest of the alphabet soup of «oscillations», volcanism) either don't capture energy over multiple cycles — if I push a child on a swing, his average position doesn't move away from me — or are going in the wrong direction.

Variations in the Atlantic Multi-decadal Oscillation (see Section 3.6.6 for a more detailed discussion) could account for some of the evolution of global and hemispheric mean temperatures during the instrumental period; Knight et al. (2005) estimate that variations in the Atlantic Multi-decadal Oscillation could account for up to 0.2 °C peak - to - trough variability in NH mean decadal temperaturVariations in the Atlantic Multi-decadal Oscillation (see Section 3.6.6 for a more detailed discussion) could account for some of the evolution of global and hemispheric mean temperatures during the instrumental period; Knight et al. (2005) estimate that variations in the Atlantic Multi-decadal Oscillation could account for up to 0.2 °C peak - to - trough variability in NH mean decadal temperaturvariations in the Atlantic Multi-decadal Oscillation could account for up to 0.2 °C peak - to - trough variability in NH mean decadal temperatures.»

We removed the effects of ENSO and Pacific Decadal Oscillation (PDO)- related variations on GMSL by computing a correction.