Sentences with phrase «pacific ocean variability»

A new study by Furtado et al. confirms what has long been suspected, the IPCC climate models are unable to deal with the Pacific ocean variability.

And a better understanding of North Atlantic Ocean dynamics is central to understanding Pacific Ocean variability and vital in predicting how global mean temperatures may evolve on decadal timescales.

Moy et al (2002) present the record of sedimentation in a South American lake shown below (panel b)-- which is strongly influenced by Pacific Ocean variability.

Not exact matches

More frequent and larger changes in the North Pacific High appear to originate from rising variability in the tropics and are linked to the record - breaking El Niño events in 1983, 1998, and 2016 and the 2014 - 2015 North Pacific Ocean heat wave known as «The Blob.»

But this phenomenon, called «upwelling» has a very variable intensity due to the variability of the currents in the Pacific Basin, to which other ocean and climate forcing mechanisms are added.

This variability includes the Pacific Decadal Oscillation (PDO), a long - lived El Niño - like pattern of Pacific climate variability that works like a switch every 30 years or so between two different circulation patterns in the North Pacific Ocean.

The oscillation is a pattern of climate variability akin to El Niño and La Niña — weather patterns caused by periodic warming and cooling of ocean temperatures in the Pacific — except it is longer - lived.

In the Northern Hemisphere mid-latitudes, much of the day - to - day weather variability is determined by the storm track regions located over the Atlantic and Pacific oceans.

Saba, who has conducted modeling studies on the impacts of climate change on endangered leatherback turtles in the eastern Pacific Ocean, says the Northwest Atlantic loggerhead study offers a new approach in understanding how climate variability affects sea turtle populations.

Dynamical excitation of the tropical Pacific Ocean and ENSO variability by Little Ice Age cooling

«At first, tropical ocean temperature contrast between Pacific and Atlantic causes slow climate variability due to its large thermodynamical inertia, and then affects the atmospheric high - pressure ridge off the California coast via global teleconnections.

Now scientists from Kyoto University and UC San Diego have discovered that this phenomenon occurred when the warming phase — «interdecadal variability mode» — of both the Pacific and Atlantic Oceans coincided.

El Niño is a weather pattern characterized by a periodic fluctuation in sea surface temperature and air pressure in the Pacific Ocean, which causes climate variability over the course of years, sometimes even decades.

«Whereas the Pacific was previously considered the main driver of tropical climate variability and the Atlantic and Indian Ocean its slaves, our results document a much more active role for the Atlantic Ocean in determining conditions in the other two ocean baOcean its slaves, our results document a much more active role for the Atlantic Ocean in determining conditions in the other two ocean baOcean in determining conditions in the other two ocean baocean basins.

However, ENSO also increased the mean and variability of MHW duration in the northeast Pacific Ocean (Supplementary Fig. 1E, F), the variability of intensity off Western Australia and California (Supplementary Fig. 1D) and the variability of frequency over much of the Tropics in all ocean basins as well as the mid - and high - latitudes in the Pacific Ocean (Supplementary Fig.Ocean (Supplementary Fig. 1E, F), the variability of intensity off Western Australia and California (Supplementary Fig. 1D) and the variability of frequency over much of the Tropics in all ocean basins as well as the mid - and high - latitudes in the Pacific Ocean (Supplementary Fig.ocean basins as well as the mid - and high - latitudes in the Pacific Ocean (Supplementary Fig.Ocean (Supplementary Fig. 1B).

Hotspots of high intensity occurred in regions of large SST variability including the five western boundary current extension regions (+2 — 5 °C), the central and eastern equatorial Pacific Ocean (+1 — 4 °C) and eastern boundary current regions (+1 — 3 °C).

Screen, J. A. & Francis, J. A. Contribution of sea ice loss to Arctic amplification is regulated by Pacific Ocean decadal variability.

-- The Pacific Decadal Oscillation is a pattern of ocean - atmospheric climate variability across the mid-latitude Pacific Oocean - atmospheric climate variability across the mid-latitude Pacific OceanOcean.

The Pacific Decadal Oscillation is a pattern of ocean - atmospheric climate variability across the mid-latitude Pacific Oocean - atmospheric climate variability across the mid-latitude Pacific OceanOcean.

Since the 1980s, we've had sufficient understanding of ENSO to be able to predict the occurrence and speed of these waves and, consequently, the variability of ocean temperatures in the Eastern Pacific about six months in advance.

At this time the E-W sea surface temperature gradients in both the Pacific and Indian Oceans increased [29], [31] intensifying the E-W moisture transport in the tropics, which greatly increased rainfall variability both on a precession and an ENSO (El Niño Southern Oscillation) time - scales.

«[B] y making use of 21 CMIP5 coupled climate models, we study the contribution of external forcing to the Pacific Ocean regional sea level variability over 1993 — 2013, and show that according to climate models, externally forced and thereby the anthropogenic sea level fingerprint on regional sea level trends in the tropical Pacific is still too small to be observable by satellite altimetry.»

Other major African rivers, including the Blue and White Nile, Congo and inflow into Lake Malawi show high variability, consistent with interannual variability of SSTs in the Atlantic, Indian and Pacific Oceans.

Ocean and atmospheric indices — in this case the El Niño Southern Oscillation, the Pacific Decadal Oscillation, the North Atlantic Oscillation and the North Pacific Oscillation — can be thought of as chaotic oscillators that capture the major modes of climate variability.

While that is possible, the so - called Pacific Decadal Oscillation (PDO) index that is used to characterize decadal and multi-decadal variability of the Pacific Ocean has not shown a significant increasing or decreasing three - decade trend from the 1980's to the 2000's (it's dominated by quasi-decadal fluctuation since 1980).

Consequently, some models have tropical Pacific variability that is smaller than observed, while for some it is larger than observed (this is mostly a function of the ocean model resolution and climatological depth of the equatorial thermocline — but a full description is beyond the scope of a blog post).

The evolution of El Niño - Southern Oscillation (ENSO) variability can be characterized by various ocean - atmosphere feedbacks, for example, the influence of ENSO related sea surface temperature (SST) variability on the low - level wind and surface heat fluxes in the equatorial tropical Pacific, which in turn affects the evolution of the SST.

«The use of a coupled ocean — atmosphere — sea ice model to hindcast (i.e., historical forecast) recent climate variability is described and illustrated for the cases of the 1976/77 and 1998/99 climate shift events in the Pacific.

Ocean and atmospheric indices — in this case the El Niño Southern Oscillation, the Pacific Decadal Oscillation, the North Atlantic Oscillation and the North Pacific Oscillation — can be thought of as chaotic oscillators that capture the major modes of northern hemisphere climate variability.

The specific linkages seem likely to include UV variability driving sea level pressure and modulating Pacific Ocean states.

They constructed a numerical network model from 4 observed ocean and climate indices — ENSO, PDO, the North Atlantic Oscillation (NAO) and the Pacific Northwest Anomaly (PNA)-- thus capturing most of the major modes of climate variability in the period 1900 — 2000.

One of the major drivers of this variability involves the El Niño — La Niña oscillation in the Pacific, which determines how much heat is taken up by the oceans rather than the atmosphere.

Variability and heat sequestration over specific regions (e.g., Pacific, Atlantic, Indian, Southern Oceans, etc.) require further investigation, the authors conclude.

However, regionally there appears to be skill beyond the trend in the two areas of well - known low - frequency variability: SST in parts of the North Atlantic and Pacific Oceans is predicted better than persistence.

Tropical origins of North and South Pacific decadal variability by Jeremy D. Shakun and Jeffrey Shaman makes some very interesting findings suggesting that both the northern and southern Pacific Ocean has evidence of the Pacific Decadal Variation PDV being...

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.

«The authors write that «the El Niño - Southern Oscillation (ENSO) is a naturally occurring fluctuation,» whereby «on a timescale of two to seven years, the eastern equatorial Pacific climate varies between anomalously cold (La Niña) and warm (El Niño) conditions,» and that «these swings in temperature are accompanied by changes in the structure of the subsurface ocean, variability in the strength of the equatorial easterly trade winds, shifts in the position of atmospheric convection, and global teleconnection patterns associated with these changes that lead to variations in rainfall and weather patterns in many parts of the world,» which end up affecting «ecosystems, agriculture, freshwater supplies, hurricanes and other severe weather events worldwide.»»

Other well - known modes of variability include: The Antarctic oscillation; The Arctic oscillation; The Atlantic multidecadal oscillation; The Indian Ocean Dipole; The Madden — Julian oscillation; The North Atlantic oscillation; The Pacific decadal oscillation; The Pacific - North American teleconnection pattern; The Quasi-biennial oscillation.

Ocean and atmospheric indices — in this case the El Niño Southern Oscillation, the Pacific Decadal Oscillation, the North Atlantic Oscillation and the North Pacific Oscillation — can be thought of as chaotic oscillators that capture the major modes of NH climate variability.

Regardless of near term outcomes — it is odds on for a cooler sun and more upwelling in the Pacific Ocean this century — providing a cooling influence on the oceans and atmosphere and the inevitable regional variability in rainfall.

«Our results from this study imply that if future anthropogenic warming effects in the Indo - Pacific warm pool dominate natural variability, mid-ocean islands such as the Mascarenhas Archipelago, coasts of Indonesia, Sumatra, and the north Indian Ocean may experience significantly more sea level rise than the global average,» Han said.

However, direct attribution of these changes to climate change is made difficult by long - term patterns of variability that influence productivity of different parts of the Ocean (e.g., Pacific Decadal Oscillation).

The North Pacific Decadal Variability (NPDV) is composed of two identified patterns of ocean vVariability (NPDV) is composed of two identified patterns of ocean variabilityvariability.

«The authors write that North Pacific Decadal Variability (NPDV) «is a key component in predictability studies of both regional and global climate change,»... they emphasize that given the links between both the PDO and the NPGO with global climate, the accurate characterization and the degree of predictability of these two modes in coupled climate models is an important «open question in climate dynamics» that needs to be addressed... report that model - derived «temporal and spatial statistics of the North Pacific Ocean modes exhibit significant discrepancies from observations in their twentieth - century climate... conclude that «for implications on future climate change, the coupled climate models show no consensus on projected future changes in frequency of either the first or second leading pattern of North Pacific SST anomalies,» and they say that «the lack of a consensus in changes in either mode also affects confidence in projected changes in the overlying atmospheric circulation.»»

The hockey stick pattern also shows up in the following papers: «Pacific Ocean Heat Content During the Past 10,000 Years» «Inter-hemispheric temperature variability over the past millennium»

If IPCC climate models are ever to successfully predict future climate changes, they first need to be able to predict the variability of the northern Pacific ocean.

The key conclusion of this work is that much of the variability in global temperature is being driven by ocean temperatures near the equator in the Eastern Pacific Oocean temperatures near the equator in the Eastern Pacific OceanOcean.

Tourre, Y. M., Y. Kushnir, and W. B. White, 1999: Evolution of interdecadal variability in sea level pressure, sea surface temperature, and upper ocean temperature over the Pacific Oocean temperature over the Pacific OceanOcean.

The large interannual to decadal hydroclimatic variability in winter precipitation is highly influenced by sea surface temperature (SST) anomalies in the tropical Pacific Ocean and associated changes in large - scale atmospheric circulation patterns [16].

ENSO (El Niño Southern Oscillation) variability is linked to the spinning up or down of the South Pacific gyre — as it brings more or less cold Southern Ocean water northward — along the Peruvian coast — to more or less... Continue reading →