Sentences with phrase «with multidecadal»

They clearly mention that the drop is neither explicable with aerosols nor with multidecadal ocean variability.

The figure shows global «wind and gyre circulation changes hypothesized to be associated with multidecadal (a) warm and (b) cool phases of the North and South Hemispheres.

Three of these five intervals coincided with multidecadal hemispheric climate - regime shifts, which were characterized by a switch between distinct atmospheric and oceanic circulation patterns, a reversal of NHT trend, and by altered character of ENSO variability.

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 reason for a lack of short term correlation is probably that, absent a volcanic eruption, the Atlantic is warmer during an El Nino BUT the wind shear is greater, thus destroying, on such occasions, the agreement you would normally get with multidecadal changes in SST in the Atlantic RELATIVE to other ocean basins.

Not exact matches

The researchers compared this long fire record with weather patterns: the well - known El Nino and La Nina cycles that occur every two to seven years, as well as longer cycles called the Pacific Decadal Oscillation and the Atlantic Multidecadal Oscillation (AMO).

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

Hopefully, more refined work with recent and future data, and incorporation of research into the coupling mechanisms themselves, will allow us to validate the model climate sensitivities to the various forcings, and confidently reproduce multidecadal internal climate modes.

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.

Most of flood periods coincided with the warm phase of the Atlantic Multidecadal Oscillation (AMO).

We show that a multidecadal increase in flower activity is most strongly associated with rising atmospheric CO2 concentrations using yearly aggregated data.

These indices are defined in analogy with the Atlantic Multidecadal Oscillation (AMO) index.

In the Northwest Atlantic we expect recruitment varies with the Atlantic Multidecadal Oscillation (AMO).

NOAA has issued its annual forecast for the hurricane season, along with its now - standard explanation that there is a natural cycle of multidecadal (40 - 60 year) length in the North Atlantic circulation (often referred to as the «Atlantic Multidecadal Oscillation» — see Figure), that is varying the frequency of Atlantic tropical cyclones, and that the present high level of activity is due to a concurrent positive peak in this multidecadal (40 - 60 year) length in the North Atlantic circulation (often referred to as the «Atlantic Multidecadal Oscillation» — see Figure), that is varying the frequency of Atlantic tropical cyclones, and that the present high level of activity is due to a concurrent positive peak in this Multidecadal Oscillation» — see Figure), that is varying the frequency of Atlantic tropical cyclones, and that the present high level of activity is due to a concurrent positive peak in this oscillation.

AWP variability occurs on both interannual and multidecadal timescales as well as with a secular variation.

Maybe, but they are NOT a wash when you are considering a period of the order, or shorter than, the multidecadal time scales associated with these oscillations.

The AWP multidecadal variability coincides with the signal of the AMO; that is, the warm (cool) phases of the AMO are characterized by repeated large (small) AWPs.

In the past, Gavin agreed with me on the very limited value of downscaling multidecadal climate predictions.

If individuals truly interested in this topic don't, at a minimum, research the Atlantic Multidecadal Oscillation, the Pacific Decadal Oscillation, and the various solar cycles and their relationship with changes in temperatures, then I am afraid those individuals are no more interested in knowledge than a lazy 4th grader... they drink the Kool - Aid, but they won't do their homework.

It will take some time to integrate the findings of this study with other evidence of changes in North Atlantic ocean circulation, including the changes seen in salinity, changes in the so - called Atlantic Multidecadal Oscillation (AMO)(see e.g. Knight et al, 2005 and references therein) and other indicators of Atlantic climate change (e.g. Dickson et al, 2002).

There is a strong regional pattern of sea level variation on multidecadal and longer timescales associated with e.g. the differential gravitational pull of growing or decaying continental ice sheets.

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).

Surface temperatures in parts of Europe appear to have have averaged nearly 1 °C below the 20th century mean during multidecadal intervals of the late 16th and late 17th century (and with even more extreme coolness for individual years), though most reconstructions indicate less than 0.5 °C cooling relative to 20th century mean conditions for the Northern Hemisphere as a whole.

The possibility exists that the unprecedented activity since 1995 is the result of a combination of the multidecadal - scale changes in Atlantic SSTs (and vertical shear) along with the additional increase in SSTs resulting from the long - term warming trend.

I for one have published a number of papers very much arguing for its existence (e.g. Delworth and Mann, 2000 and Knight et all, 2005, you can find reprints of both here), and must confess that I actually coined the term «Atlantic Multidecadal Oscillation» in an interview with Richard Kerr of Science in 2000.

In the 1930s, warming was localised to the high latitudes, consistent with this warming being the result of a natural oscillation (the so - called «Atlantic Multidecadal Oscillation»).

But how big would these jumps be and could they have a multidecadal average effect — even if only through alignment with seasons?

As with CO2, the lengths of time that they affect the climate are estimated to be on multidecadal time scales and longer.

The problem Curry has with MYA - ENSO is that, unlike AMO PDO SCCS or WSWH, ENSO's impact can be quantified and it can be shown to be far too weak to act as Curry's BNO, to power those past «multidecadal swings of the global temperature.»

Over the 1840 — 2007 time span, two multidecadal low temperature periods (1861 — 1919 and 1963 — 84) in Greenland coincide with periods of multiple major volcanic eruptions.

Periods of more frequent storm events over the two last centuries are analysed first in order to link these events with possible forcing mechanisms (North Atlantic Oscillation (NAO) and Atlantic Multidecadal Oscillation (AMO) modes) triggering the most destructive storms.

The hypothesis then is that multidecadal climate has only two significant components: the sawtooth, whatever its origins, and warming that can be accounted for 99.98 % by the AHH law as measured by the R2 of its fit to observed global warming (and could be brought even closer to 1 with a good story for MRES).

The goal with the sliders is to make MRES (multidecadal residual) in the gray plot above the sliders as flat as possible.

Following MR's calculation, the situation was that VP's exact same sawtooth method was shown to give exact same support to the negation of the hypothesis, that is, that multidecadal climate has only one significant component, the sawtooth, with no warming at all from AHH law.

On the contrary, both my poster and the subsequent discussion associates SAW with «all multidecadal ocean oscillations as a single phenomenon.»

It falls below 80 % confidence; however, it is well - known that multidecadal warming trends associated with AGW frequently have cooling trends, so it's quite plausible that slight cooling did happen within AGW.

The latter should be construed merely as a hypothesis about multidecadal climate (namely that it can be modeled in this way) that is in the running with other hypotheses.

And since MRES as shown in Figure 10 is essentially flat by comparison with SAW and AGW, it would appear that those multidecadal variations not accounted for here are either too small to matter or have been inadvertently lumped in with (i.e. are inseparable from) one of SAW, AGW, or HALE.

The period from 1660 to 1760 with an approximate 60 - year cycle (1.5 cycles) looks suspiciously like the Atlantic Multidecadal Oscillation to me which then reappears in the record after 1880 for another ~ 2 cycles taking us to the present day.

The multidecadal oscillations of the Earth's core relative to the crust described at this 2000 paper by Hide et al fits quite well with this theory, and gives an alternative to the more naive «seismic events» in my theory.

They are still trying to find why the angular rotation aligns with measures like SOI and the multidecadal global warming signal.

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).

It is hard to argue with the evidence — the climate system as a whole is not chaotic, but rather harbors chaotic elements that average out over multidecadal timescales, revealing an underlying temperature trend.

The irregularity of the temperature changes within those main background trends can not have been anything to do with humanity and can adequately be catered for by varying oceanic effects on multidecadal time scales.

- 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)

Over the multidecadal timescales, the non-chaotic solar signal predominated during the early twentieth century, with CO2 playing a subordinate role.

There is also evidence that the drift is associated with the phase of the Arctic Oscillation and Atlantic Multidecadal Oscillation.

A new study using a high - resolution stalagmite record from Australia with cave sites in southern China reveal a close coupling of monsoon rainfall on both continents, with numerous synchronous pluvial and drought periods, suggesting that the tropical rain belt expanded and contracted numerous times at multidecadal to centennial scales.

Using 40 simulations of the 1920 - 2100 climate (Figure), the study found that northeast US sea level changes can be partitioned into: (1) an interannual, internal, locally wind - driven component and (2) a multidecadal - to - centennial component that is associated with external forcing and the overturning circulation.

Recent analyses show similar northward fish migrations are associated with intruding warm Atlantic waters, driven by natural shifts in the North Atlantic Oscillations and Atlantic Multidecadal Oscillation.