Sentences with phrase «multidecadal oscillations»

We identify multidecadal oscillations in extremes estimated by fitting the GEV distribution, with approximate periodicities of about 17 - 21 years, 30 - 38 years, 49 - 68 years, 85 - 94 years, and 145 - 172 years.

This presumption almost certainly damps the longer internal multidecadal oscillations particularly in the data sparse Pacific Ocean (note this will be discussed in detail in a future post).

We show that the GCMs fail to reproduce the major decadal and multidecadal oscillations found in the global surface temperature record from 1850 to 2011.

The frequency of pump outages controls multidecadal oscillations (via hydrology).

I emphasize the importance of multidecadal oscillations (e.g. AMO, PDO) and allow for the possibility of longer scale oscillations.

I disagree with: — the large multidecadal oscillations (e.g NAO, PDO, AMO) being unforced.

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).

«Atlantic and Pacific multidecadal oscillations and Northern Hemisphere temperatures» «On forced temperature changes, internal variability, and the AMO» «Tracking the Atlantic Multidecadal Oscillation through the last 8,000 years»

It is always possible that we have been missing other multidecadal oscillations that affected the climate record of the past century.

Ipso facto, it is incapable of producing multidecadal oscillations that are not there in the record.

This tells us that, no matter how important ENSO is as a mechanism for redistributing the excess heat of the equatorial Pacific, it is NOT the mechanism that drives the multidecadal oscillations of global temperatures.

sky, How can you say «producing multidecadal oscillations upon integration is mathematically impossible» when the integration is clearly showing multidecadal oscillations?

The entire idea of higher - frequency components (the power spectrum of the Nino3.4 record peaks at ~ 5.5 a periods) producing multidecadal oscillations upon integration is mathematically impossible.

The evolution of the multidecadal oscillations (e.g. where you are at on the stadium wave wheel) 2.

Multidecadal oscillations indeed dominate such changes.

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.

... the GCMs fail to reproduce the major decadal and multidecadal oscillations found in the global surface temperature record from 1850 to 2011.

failure to simulate the correct network of multidecadal oscillations and their correct phasing

However, multidecadal oscillations can cover 50 - to 60 - year periods.

The researchers next considered the influence of two large weather patterns known to bring wetter conditions to the central United States — the El Niño - Southern Oscillation and the Atlantic Multidecadal Oscillation.

The climatic change at issue is known as the Atlantic Multidecadal Oscillation (AMO), a periodic cycle of warming and cooling of surface temperatures in the North Atlantic.

The Atlantic Multidecadal Oscillation is related to sea surface temperatures in the North Atlantic Ocean and, like El Niño, it affects weather far away.

Saba and colleagues used population models to evaluate the relative influence of climate indices including the Atlantic Multidecadal Oscillation, the North Atlantic Oscillation, and the El Niño Southern Oscillation.

There are two big climate influences on hurricanes — the Pacific Ocean's El Niño / La Niña cycle and the Atlantic Multidecadal Oscillation (AMO).

«Whether or not what we're seeing in the western U.S. is mainly a function of the [Atlantic Multidecadal Oscillation] or warming temperatures or some combination of both, we can't see,» Swetnam says.

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).

Predictions of global cooling in the short term are partly based on the idea that sea surface temperatures will fall in the northern Atlantic, due to slow, irregular swings in conditions known as the Atlantic Multidecadal Oscillation.

Researchers from the University of California Irvine have shown that a phenomenon known as the Atlantic Multidecadal Oscillation (AMO)-- a natural pattern of variation in North Atlantic sea surface temperatures that switches between a positive and negative phase every 60 - 70 years — can affect an atmospheric circulation pattern, known as the North Atlantic Oscillation (NAO), that influences the temperature and precipitation over the Northern Hemisphere in winter.

That was another period when you had the Pacific Decadal Oscillation and the Atlantic Multidecadal Oscillation chiming in together.

Van Houtan and Halley think the two oceanic cycles — the Pacific Decadal Oscillation (PDO) and the Atlantic Multidecadal Oscillation (AMO)-- can make or break a young turtle's survival; favorable cycles bring food and good weather, for example.

In 1995, this cycle, known as the Atlantic Multidecadal Oscillation, switched to a phase that generally leads to higher Atlantic Ocean temperatures.

We removed the influence of ENSO, the Pacific Decadal Oscillation (PDO62) and the Atlantic Multidecadal Oscillation (AMO63) from the MHW proxies using a statistical approach.

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

Akasofu, 2010, fit the temperature record to recovery from the Little Ice Age + / - multidecadal oscillation.

Natural changes like the Atlantic Multidecadal Oscillation as well as more familiar shifts like El Niño are responsible for some of the year - to - year fluctuations in the number of hurricanes.

Naturally occurring interannual and multidecadal shifts in regional ocean regimes such as the Pacific El Niño - Southern Oscillation, the North Atlantic Oscillation, and the Atlantic Multidecadal Oscillation, for example, are bimodal oscillations that cycle between phases of warmer and cooler sea surface temperatures.

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

Spatial - temporal analysis of United States precipitation data from 1900 to 1999 indicates that the Atlantic Multidecadal Oscillation (AMO) primarily modulates drought frequency.

The Atlantic Multidecadal Oscillation (AMO), Pacific Decadal Oscillation (PDO), North Atlantic Oscillation (NAO), and El Niño - Southern Oscillation (ENSO) have all been found to significantly influence changes in surface air temperature and rainfall (climate) on decadal and multi-decadal scales, and these natural ocean oscillations have been robustly connected to changes in solar activity.

... On decadal to multidecadal timescales, the Pacific Decadal Oscillation (PDO), the Atlantic Multidecadal Oscillation, and the Atlantic tripole mode determine the variability of rainfall over India (Sen Roy et al., 2003; Lu et al., 2006; Zhang and Delworth, 2006; Li et al., 2008; Sen Roy, 2011; Krishnamurthy and Krishnamurthy, 2014a, 2014b, 2016b).

Prominently, this is manifested in the Atlantic Multidecadal Oscillation (AMO) in sea surface temperatures.

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

The Atlantic Meridional Overturning Circulation drives the Atlantic Multidecadal Oscillation?

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

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).

What they are not due to is the Pacific Multidecadal Oscillation (which is captured by the ENSO signal) or the Atlantic Multidecadal Oscillation (which does not have a suitable pattern to explain the phenomenon).

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.

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 oscillation.

«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 (AMO).