Sentences with phrase «multi-decadal oscillation»

After removing the multi-decadal oscillation, Wu et al have reported their result for the long - term warming rate [2]:

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 temperatures.»

s power dissipation one might see during an earlier peaking period in the Atlantic Multi-decadal Oscillation (e.g., from 1920 to 1940).

Here is some work combining recovery from the «Little Ice Age» plus «Multi-Decadal Oscillation».

The ice loss in the Northern Hemisphere is most likely the result of the Atlantic Multi-decadal Oscillation, a completely natural phenomenon.

Imprint of the Atlantic multi-decadal oscillation and Pacific decadal oscillation on southwestern US climate: past, present, and future Petr Chylek • Manvendra K. Dubey • Glen...

Chylek et al (2013) Imprint of the Atlantic multi-decadal oscillation and Pacific decadal oscillation on southwestern US climate: past, present, and future Climate Dynamics DOI 10.1007 / s00382 -013-1933-3

The Atlantic Multi-decadal Oscillation (AMO) could be a confounding influence but studies that find a significant role for the AMO show that this does not project strongly onto 1951 — 2010 temperature trends.

Looking for any evidence that humanity is cooking the globe, Jiansong Zhou and Ka - Kit Tung (Deducing Multi-decadal Anthropogenic Global Warming Trends Using Multiple Regression Analysis) began by excluding climate change due to natural factors and more specifically, by adding the effects of AMO (Atlantic Multi-decadal Oscillation) trends that alarmists neglected to consider.

There has been a multi-decadal oscillation in the late - summer extent after the seasonal melt, which seems to follow a similar multi-decadal temperature oscillation.

The new atlas could also improve understanding of climate phenomena like the Atlantic Multi-decadal Oscillation, a variation in North Atlantic sea - surface temperatures that hasn't been tracked long enough to tell if it is a transitory event, forced by human intervention in the climate system, or a natural long - term oscillation.

Atlantic Multi-decadal Oscillation index from 1850 to 2005 represented by annual anomalies of SST in the extratropical North Atlantic (30 — 65 ° N; top), and in a more muted fashion in the tropical Atlantic (10 ° N — 20 ° N) SST anomalies (bottom).

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 temperatures.

Imprint of the Atlantic multi-decadal oscillation and Pacific decadal oscillation on southwestern US climate: past, present, and future

The near - linear rate of anthropogenic warming (predominantly from anthropogenic greenhouse gases) is shown in sources such as: «Deducing Multidecadal Anthropogenic Global Warming Trends Using Multiple Regression Analysis» «The global warming hiatus — a natural product of interactions of a secular warming trend and a multi-decadal oscillation» «The Origin and Limits of the Near Proportionality between Climate Warming and Cumulative CO2 Emissions» «Sensitivity of climate to cumulative carbon emissions due to compensation of ocean heat and carbon uptake» «Return periods of global climate fluctuations and the pause» «Using data to attribute episodes of warming and cooling in instrumental records» «The proportionality of global warming to cumulative carbon emissions» «The sensitivity of the proportionality between temperature change and cumulative CO2 emissions to ocean mixing»

We find that in the early twentieth century the warming was dominated by a positive phase of the Atlantic multi-decadal oscillation (AMO) with minor contributions from increasing solar irradiance and concentration of greenhouse gases.

Due to aerosols and the negative phase of a cycle knows as the AMO (Atlantic Multi-decadal Oscillation), with the former playing a larger role than the latter.

2011; Henriksson et al. 2012; Yang et al. 2013; Escudier et al. 2013; Zanchettin et al. 2013) as well as simplified conceptual ocean models (Frankcombe and Djikstra 2011), or sta - tistical harmonic models (Humlum et al. 2011; Mazzarella and Scafetta 2012; Scafetta 2012) suggest a future per - sistent AMO like multi-decadal oscillation.

I don't agree with the slowing of the sea level rise as it has multi-decadal oscillation.

Examples include El Nino, the Pacific Decadal Oscillation, the Atlantic Multi-decadal Oscillation, etc..

In the context of large - scale variability in the North Atlantic and North Pacific oceans, the spring 2010 Atlantic Multi-decadal Oscillation (AMO; area averaged SST over the North Atlantic) was the highest since 1948 (http://www.esrl.noaa.gov/psd/data/correlation/amon.us.data) while the spring 2010 PDO (http://jisao.washington.edu/pdo/) was near neutral.

Science tells us, that, «the temperature in 2100 depends greatly on the combination of both effects,» i.e., «an almost linear increase of about +0.5 °C / 100 years and a multi-decadal oscillation of amplitude 0.2 °C.»

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.

In their analysis of temperature anomalies across the tropical North Atlantic in 2005, Trenberth and Shea [26] indicated that half of the warming (0.45 °C of the 0.9 °C anomaly vs. a 1901 — 1970 baseline) was attributable to monotonic climate change, while only 0.2 °C was attributable to the weak 2004 — 05 El Niño, and even less to the Atlantic Multi-decadal Oscillation (< 0.1 °C).

To attribute that irregular, multi-decadal oscillation to the PDO without establishing strong coherence and proper phase relationship via cross-spectrum analysis is to engage in bald speculation — the frequent hallmark of pretentious junk science.

«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 temperatures»

There are two main explanations for the 1940s to 1970s global temperature stagnation (or slight cooling): aerosol forcing and the negative phase of an ocean cycle known as the Atlantic Multi-decadal Oscillation (AMO), with the former contributing more than the latter.

To put into a wider context — both temperature and ice extent seem correlated to the Atlantic Multi-decadal Oscillation.

While the tropical Atlantic is currently warmer than average, the far North Atlantic is colder than average, potentially indicative of a negative phase of an Atlantic multi-decadal oscillation, another entirely natural occurrence which affects ocean temperatures over 25 to 40 years.

Our main conclusion was that a), we had, in fact, gone back to a busy period in the Atlantic, Gulf of Mexico, and the Caribbean, and b), it was caused by a natural fluctuation in the Atlantic Ocean and the atmosphere, called the Atlantic multi-decadal oscillation.

Adam G: You can not conclude that just from looking at a basin which has less than 15 % of the total global tropical cyclone activity, and also selecting groups of years that coincide exactly with the positive and negative Atlantic Multi-decadal Oscillation phases, which would dominate over any AGW trend in this basin if it exists.

This too is questionable, as there are reasons to think the ocean uptake of heat varies at different time scales and may be influenced by ENSO, the Pacific Decadal Oscillation (PDO), and the Atlantic Multi-decadal Oscillation (AMO).

Also to claim a warming on the basis of a multi-decadal oscillation back to the 1970s (when the temperature had been falling since about 1940) as some sort of significance, is beyond risible.

Climate patterns associated with the warm phase of the Atlantic Multi-decadal Oscillation (AMO).

Since 1995, the natural climate pattern called the Atlantic Multi-decadal Oscillation (AMO) has been in a phase in which temperature, wind, and rainfall patterns favor stronger hurricane seasons.

Over the last six centuries that variability correlates with components of the Atlantic climate system such as the North Atlantic Oscillation (NAO) and Atlantic Multi-decadal Oscillation (AMO).

Multi-decadal variability is also evident in the Atlantic as the Atlantic Multi-decadal Oscillation in both the atmosphere and the ocean.

A University of Miami (UM) Rosenstiel School of Marine and Atmospheric - led study challenges the prevailing wisdom by identifying the atmosphere as the driver of a decades - long climate variation known as the Atlantic Multi-decadal Oscillation (AMO).

They also completely miss out any of the interesting uncertainty discussed here about the measurements and multi-decadal oscillations in the Ocean.

ENSO is cyclic and if it is independent of WM - GHG concentrations it makes no net contribution to the general rise in temperatures, the same is true any multi-decadal oscillations.

With «mean climate», surely the model ensemble mean is meant, however the «real data» to base the tuning on by definition is restricted to the single realisation of Earth's climate (including cloud cover caused by, for instance, multi-decadal oscillations instead of AGW feedback).

Multi-decadal oscillations plus trend hypothesis 3.

What any atmospheric scientist knows (I suspect even Judith knows this) is that these brief shallow «pauses» in - between the stronger upsurges are noise from the periodic decadal and multi-decadal oscillations (PDO, AMO) plus strong ENSO years.

There are lots of experts on small subsets of all the physics that go into climate, radiative physics, clouds, aerosol, oceans, multi-decadal oscillations, solar, global ice, etc..

«Pause» or «multi-decadal oscillations» are just words, no true causal explanations.

This would avoid such physically unconvincing arguments as data subset NINO3.4 (which has very little low - frequency power) «causing» the multi-decadal oscillations of the entire global set of data.

1998 just happened to be a monster El Nino near the peak of both the millennial and multi-decadal oscillations.

Also, given multi-decadal oscillations that influence water levels, it seems premature to say we have a long enough record to make judgments about 2100.

Multi-decadal oscillations plus trend hypothesis: This is a bit undefined and fuzzy.

Multi-decadal oscillations plus trend hypothesis: 20th century climate variability / change is explained by the large multidecadal oscillations (e.g NAO, PDO, AMO) with a superimposed trend of external forcing (AGW warming).