Sentences with phrase «multidecadal variability in»

Analyses of global climate from measurements dating back to the nineteenth century show an «Atlantic Multidecadal Oscillation» (AMO) as a leading large - scale pattern of multidecadal variability in surface temperature.

«Recurring stratospheric vortex events create long - lived perturbations at the ocean surface, which penetrate into the deeper ocean and trigger multidecadal variability in its circulation.

Can the Atlantic Ocean drive the observed multidecadal variability in Northern Hemisphere mean temperature?

Multidecadal variability in methane concentrations throughout the LPIH is weakly correlated or uncorrelated with reconstructions of temperature and precipitation from a variety of geographic regions.

A significant component of unforced multidecadal variability in the recent acceleration of global warming

The PDO does not represent the multidecadal variability in the sea surface temperatures of the North Pacific.

Zhang, R., T. L. Delworth, and I. M. Held, 2007: Can the Atlantic Ocean drive the observed multidecadal variability in Northern Hemisphere mean temperature?

A signal of persistent Atlantic multidecadal variability in Arctic sea ice M.W. Miles et al. 2014.

DOES THE VIDEO AND DATA PRESENT MORE THAN MULTIDECADAL VARIABILITY IN GLOBAL SST ANOMALIES?

Micevski, T., Franks, S. W., Kuczera, G., 2006, Multidecadal variability in coastal eastern Australian flood data, Journal of Hydrology, Volume 327, Issues 1 — 2, 30 July 2006, Pages 219 - 225, DOI: 10.1016 / j.jhydrol.2005.11.017

The differences between the quadratic acceleration numbers come from differences in the decadal to multidecadal variability in the curves which I don't consider very robust (we have shown in Rahmstorf et al. 2012 how strongly these can be affected by a small amount of «noise» in the sea - level data).

Delworth, T.L., Mann, M.E., Observed and Simulated Multidecadal Variability in the Northern Hemisphere, Climate Dynamics, 16, 661 - 676, 2000.

Nonetheless, even if the substantial recent trend in the AO pattern is simply a product of natural multidecadal variability in North Atlantic climate, it underscores the fact that western and southern Greenland is an extremely poor place to look, from a signal vs. noise point of view, for the large - scale polar amplification signature of anthropogenic surface warming.

Delworth, T.L., and M.E. Mann, 2000: Observed and simulated multidecadal variability in the Northern Hemisphere.

Nonetheless, even if the substantial recent trend in the AO pattern is simply a product of natural multidecadal variability in North Atlantic climate, it underscores the fact that western and southern Greenland is an extremely poor place to look, from a signal vs. noise point of view, for the large - scale polar amplification signature of anthropogenic surface warming.

Not exact matches

The recent slowdown in global temperature increase is consistent with internal Pacific and Atlantic multidecadal variability.

Furthermore, since the end of the 19th century, we find an increasing variance in multidecadal hydroclimatic winter and spring, and this coincides with an increase in the multidecadal North Atlantic Oscillation (NAO) variability, suggesting a significant influence of large - scale atmospheric circulation patterns.

However, multidecadal NAO variability has decreased in summer.

Here we demonstrate that the multidcadal variability in NHT including the recent warming hiatus is tied to the NAT - NAO - AMO - AMOC coupled mode and the NAO is implicated as a useful predictor of NHT multidecadal variability.

Loggerhead juveniles disperse to regions whose climatic variability is characterized (a) in the North Atlantic by the Atlantic Multidecadal Oscillation (AMO) and (b) in the North Pacific by the Pacific Decadal Oscillation (PDO).

Using simulations of the last millennium to understand climate variability seen in palaeo - observations: Similar variation of Iceland - Scotland overflow strength and Atlantic Multidecadal Oscillation.

Multidecadal variability and the Inter Polar Gradient of atmospheric methane in the late Holocene.

«Multidecadal variability of Atlantic tropical cyclone activity is observed to relate to the Atlantic Multidecadal Oscillation (AMO)-- a mode manifesting primarily in sea surface temperature (SST) in the high latitudes of the North Atlantic.

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 (AMOIn 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 (AMOin 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 (AMOin not the El Nino - Southern Oscillation (ENSO)(as everyone else believes), but is actually the Atlantic Multidecadal Oscillation (AMO).

Since the CMIP5 models used by the IPCC on average adequately reproduce observed global warming in the last two and a half decades of the 20th century without any contribution from multidecadal ocean variability, it follows that those models (whose mean TCR is slightly over 1.8 °C) must be substantially too sensitive.

The 960 year carrier wave variability can then be modulated — i.e shorter term forecasts can be then made by looking at and projecting forwards on top of the carrier wave the shorter term multidecadal periodicities in the PDO AMO etc..

Patterns of variability that don't match the predicted fingerprints from the examined drivers (the «residuals») can be large — especially on short - time scales, and look in most cases like the modes of internal variability that we've been used to; ENSO / PDO, the North Atlantic multidecadal oscillation etc..

In that case, one needs to use some technique for separating the multidecadal variability from the long - term trend.

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 measurements).

We have many examples in the simulations — lots of multidecadal variability there.

This study uses several independent data sources to demonstrate that century - long warming around the northeast Pacific margins, like multidecadal variability, can be primarily attributed to changes in atmospheric circulation.

The historical multidecadal - scale variability in Atlantic hurricane activity is much greater than what would be «expected» from a gradual temperature increase attributed to global warming.

The community already knows that there is multidecadal - scale variability in North Atlantic temperatures.

Specifically, the claim was made that temperatures in Churchill, Manitoba (close to the center of the Western Hudson Bay population of bears) had not risen, and that instead, any multidecadal variations in temperatures affecting the bears were related to the Arctic Oscillation (AO), a mode of natural variability.

As noted in that post, RealClimate defines the Atlantic Multidecadal Oscillation («AMO») as, «A multidecadal (50 - 80 year timescale) pattern of North Atlantic ocean - atmosphere variability whose existence has been argued for based on statistical analyses of observational and proxy climate data, and coupled Atmosphere - Ocean General Circulation Model («AOGCM») Multidecadal Oscillation («AMO») as, «A multidecadal (50 - 80 year timescale) pattern of North Atlantic ocean - atmosphere variability whose existence has been argued for based on statistical analyses of observational and proxy climate data, and coupled Atmosphere - Ocean General Circulation Model («AOGCM») multidecadal (50 - 80 year timescale) pattern of North Atlantic ocean - atmosphere variability whose existence has been argued for based on statistical analyses of observational and proxy climate data, and coupled Atmosphere - Ocean General Circulation Model («AOGCM») simulations.

Kravtsov, S., M. G. Wyatt, J. A. Curry, and A. A. Tsonis, 2014: Two contrasting views of multidecadal climate variability in the twentieth century.

The thing is, it's not enough to look at a 10 year period in isolation and I would certainly hesitate to draw conclusions about multidecadal variability based on 10 years of data.

• There is strong evidence that the multidecadal SAT variability in the Atlantic (and globally) is driven (at least partly) by variations in the MOC • A stochastic scenario is most plausible, in which the ocean is driven by the low - frequency portion of the atmospheric variability (NAO).

The one GT student that you have engaged, Angela Fritz, is a first year graduate student interested in the intersection of climate change and policy (she is not taking the hurricane seminar, but is taking the multidecadal climate variability seminar).

In panel - b the magnitude of unforced variability is large (wide range between the blue lines) and thus changes in the multidecadal rate of warming could come about due to unforced variabilitIn panel - b the magnitude of unforced variability is large (wide range between the blue lines) and thus changes in the multidecadal rate of warming could come about due to unforced variabilitin the multidecadal rate of warming could come about due to unforced variability.

As illustrated in Figure 1 above from the 2011 paper Atmospheric Blocking and Atlantic Multidecadal Ocean Variability, the answer would be there has been no trend in Greenland blocking days (estimates in black and dark blue).

The ice variability in these seas is dominated by a multidecadal, low - frequency oscillation (LFO) and (to a lesser degree) by higher - frequency decadal fluctuations.

Clearly the higher frequencies dominate in some indices, but the results have been pretty consistent with the multidecadal variability being shared by all network indices.

The two studies to be discussed are: Atlantic Multidecadal Oscillation and Northern Hemisphere's climate variability (2012) and Role for Eurasian Arctic shelf sea ice in a secularly varying hemispheric climate signal during the 20th century (2013)

«On forced temperature changes, internal variability, and the AMO» «Tracking the Atlantic Multidecadal Oscillation through the last 8,000 years» «The Atlantic Multidecadal Oscillation as a dominant factor of oceanic influence on climate» «The role of Atlantic Multi-decadal Oscillation in the global mean temperature variability» «The North Atlantic Oscillation as a driver of rapid climate change in the Northern Hemisphere» «The Atlanto - Pacific multidecade oscillation and its imprint on the global temperature record» «Imprints of climate forcings in global gridded temperature data» «North Atlantic Multidecadal SST Oscillation: External forcing versus internal variability» «Forced and internal twentieth - century SST trends in the North Atlantic» «Interactive comment on «Imprints of climate forcings in global gridded temperature data» by J. Mikšovský et al.» «Atlantic and Pacific multidecadal oscillations and Northern Hemisphere temperaMultidecadal Oscillation through the last 8,000 years» «The Atlantic Multidecadal Oscillation as a dominant factor of oceanic influence on climate» «The role of Atlantic Multi-decadal Oscillation in the global mean temperature variability» «The North Atlantic Oscillation as a driver of rapid climate change in the Northern Hemisphere» «The Atlanto - Pacific multidecade oscillation and its imprint on the global temperature record» «Imprints of climate forcings in global gridded temperature data» «North Atlantic Multidecadal SST Oscillation: External forcing versus internal variability» «Forced and internal twentieth - century SST trends in the North Atlantic» «Interactive comment on «Imprints of climate forcings in global gridded temperature data» by J. Mikšovský et al.» «Atlantic and Pacific multidecadal oscillations and Northern Hemisphere temperaMultidecadal Oscillation as a dominant factor of oceanic influence on climate» «The role of Atlantic Multi-decadal Oscillation in the global mean temperature variability» «The North Atlantic Oscillation as a driver of rapid climate change in the Northern Hemisphere» «The Atlanto - Pacific multidecade oscillation and its imprint on the global temperature record» «Imprints of climate forcings in global gridded temperature data» «North Atlantic Multidecadal SST Oscillation: External forcing versus internal variability» «Forced and internal twentieth - century SST trends in the North Atlantic» «Interactive comment on «Imprints of climate forcings in global gridded temperature data» by J. Mikšovský et al.» «Atlantic and Pacific multidecadal oscillations and Northern Hemisphere temperaMultidecadal SST Oscillation: External forcing versus internal variability» «Forced and internal twentieth - century SST trends in the North Atlantic» «Interactive comment on «Imprints of climate forcings in global gridded temperature data» by J. Mikšovský et al.» «Atlantic and Pacific multidecadal oscillations and Northern Hemisphere temperamultidecadal oscillations and Northern Hemisphere temperatures»

Previous studies have found it to be well correlated with the low - frequency variations in the North Atlantic sea surface temperature associated with the Atlantic multidecadal variability (AMV).

- ARAMATE (The reconstruction of ecosystem and climate variability in the north Atlantic region using annually resolved archives of marine and terrestrial ecosystems)- CLIM - ARCH-DATE (Integration of high resolution climate archives with archaeological and documentary evidence for the precise dating of maritime cultural and climatic events)- CLIVASH2k (Climate variability in Antarctica and Southern Hemisphere in the past 2000 years)- CoralHydro2k (Tropical ocean hydroclimate and temperature from coral archives)- Global T CFR (Global gridded temperature reconstruction method comparisons)- GMST reconstructions - Iso2k (A global synthesis of Common Era hydroclimate using water isotopes)- MULTICHRON (Constraining modeled multidecadal climate variability in the Atlantic using proxies derived from marine bivalve shells and coralline algae)- PALEOLINK (The missing link in the Past — Downscaling paleoclimatic Earth System Models)- PSR2k (Proxy Surrogate Reconstruction 2k)

The observational and modeling results of the teleconnections linked to AMOC changes (including the dynamical response of vertical wind shear over the main development region of Atlantic hurricanes) suggest an important role of the AMOC in the AMV and the multidecadal variability of the Atlantic major hurricane frequency.

They found a 60 - to 90 - year cycle in Barents and Greenland seas ice extent related to the Atlantic Multidecadal Oscillation (AMO); the AMO is a basin - wide cycle of sea surface temperature variability similar to the El Niño and La Niña cycles in the Pacific, but varying over much longer periods.

For this, we evaluated the collective behavior of higher - frequency variability of the residual signal in the fifteen indices, from which the multidecadal signal had been removed.