Sentences with phrase «ocean climate variability»

Since 2009, CORE - I (Normal Year Forcing) and CORE - II have become the standard method to evaluate global ocean / sea - ice simulations and to examine mechanisms for forced ocean climate variability.

Altimeter data are used extensively in observationally based studies of ocean climate variability on seasonal and longer time scales.

Results provide insight into whether deep ocean climate variability can be inferred indirectly based on current monitoring systems, or whether good estimates of deep variability will have to await routine sampling of the deep ocean.

Not exact matches

A German - Russian research team has investigated the role of heat exchange between ocean and atmosphere in long - term climate variability in the Atlantic.

A study led by scientists at the GEOMAR Helmholtz Centre for Ocean Research Kiel shows that the ocean currents influence the heat exchange between ocean and atmosphere and thus can explain climate variability on decadal time scOcean Research Kiel shows that the ocean currents influence the heat exchange between ocean and atmosphere and thus can explain climate variability on decadal time scocean currents influence the heat exchange between ocean and atmosphere and thus can explain climate variability on decadal time scocean and atmosphere and thus can explain climate variability on decadal time scales.

Climate change impacts in the deep ocean are less visible, but the longevity and slow pace of life in the deep makes that ecosystem uniquely sensitive to environmental variability.

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 centre runs research programmes in climate variability and change, the monitoring of sea levels, ocean uptake of carbon dioxide, and Antarctic marine ecosystems.

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.

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.

«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.

Discussions dealing with ocean - climate coupling concentrated on ocean - atmosphere variability in the Atlantic and its relationship to European climate.

Such meteorological patterns where interannual variability in ocean temperatures affects climate have been long established in the field.

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.

These variations originate primarily from fluctuations in carbon uptake by land ecosystems driven by the natural variability of the climate system, rather than by oceans or from changes in the levels of human - made carbon emissions.

They also influence whether CO2 is stored in the ocean or the atmosphere, which is very important for global climate variability.

«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.

Given the strength of the Hurst coefficients — something we all agree on — is it not possible that a large portion of the current warming trend is a product of internal climate variability, as mediated by complex dynamics of ocean circulation?

In the past 15 years, the oceans have warmed, the amount of snow and ice has diminished and sea levels have risen, explains Lisa Goddard, an expert in climate variability at Columbia University.

This cycling of water is intimately linked with energy exchanges among the atmosphere, ocean, and land that determine the Earth's climate and cause much of natural climate variability.

«This is important for regional planning, because it allows policymakers to identify places where climate change dominates the observed sea level rise and places where the climate change signal is masked by shorter - term regional variability caused by natural ocean climate cycles.»

Monitoring, understanding, and predicting oceanic variations associated with natural climate variability and human - induced changes, and assessing the related roles of the ocean on multiple spatial - temporal scales.

This was accomplished using a stochastic climate model based on the concept that ocean temperature variability is a slow dynamical system, a red noise signal, generated by integrating stochastic atmospheric forcing, or white noise71.

Understanding the exchange of carbon between the ocean and atmosphere is vital to understanding global climate and its past, present and future variability.

January 2004: «Directions for Climate Research» Here, ExxonMobil outlines areas where it deemed more research was necessary, such as «natural climate variability, ocean currents and heat transfer, the hydrological cycle, and the ability of climate models to predict changes on a regional and local scale.Climate Research» Here, ExxonMobil outlines areas where it deemed more research was necessary, such as «natural climate variability, ocean currents and heat transfer, the hydrological cycle, and the ability of climate models to predict changes on a regional and local scale.climate variability, ocean currents and heat transfer, the hydrological cycle, and the ability of climate models to predict changes on a regional and local scale.climate models to predict changes on a regional and local scale.»

Not only do the vagaries of weather patterns and ocean currents make it hard to see climate changes, but the variability in what are often termed the Earth System components complicates the picture enormously.

Two of NOAA's four mission goals are to «protect, restore, and manage the use of coastal and ocean resources through an ecosystem approach to management,» and to «understand climate variability and change to enhance society's ability to plan and respond.»

-- 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 results show robust relationships between drought conditions and the ocean states... ENSO and PDO may reinforce each other to dominate climate variability over North America and northern South America.

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 rise and fall in CERES and ERA - Interim net radiation and upper - ocean heating rates after 2007 (Figs 2 and 4) is entirely consistent with variability linked to ENSO (Fig. 3) and shows no evidence of a discrepancy between TOA net radiation and energy accumulating in Earth's climate system»

After obtaining precise ice shelf height data, the researchers used a regional climate model to work out how much of the variability on a year - to - year basis was due to snowfall (which causes ice shelves to grow taller) versus ocean - driven melting (which causes ice shelves to thin from below).

Decadal variability is a notable feature of the Atlantic Ocean and the climate of the regions it influences.

The results indicate that naturally induced climate variations seem to be dominated by two internal variability modes of the ocean — atmosphere system: AMO and El Niño Southern Oscillation

Shaffrey, L., and R. Sutton, 2004: The interannual variability of energy transports within and over the Atlantic Ocean in a coupled climate model.

Suzuki, T., et al., 2005: Projection of future sea level and its variability in a high - resolution climate model: Ocean processes and Greenland and Antarctic ice - melt contributions.

Yukimoto, S., et al., 2001: The new Meteorological Research Institute global ocean - atmosphere coupled GCM (MRI - CGCM2)-- Model climate and variability.

«From this [study] we can better understand the effects of natural and man - made variability to the climate system,» said co-author Tim Boyer of NOAA's Ocean Climate Laboclimate system,» said co-author Tim Boyer of NOAA's Ocean Climate LaboClimate Laboratory.

In: Intraseasonal Variability in the Atmosphere - Ocean Climate System [Lau, W.K.M., and D.E. Waliser (eds.)-RSB-.

If a dominance of La Nina / ocean variability, is causing a hiatus, does that mean climate sensitivity is lower?

«[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.»

Observed changes in ocean heat content have now been shown to be inconsistent with simulated natural climate variability, but consistent with a combination of natural and anthropogenic influences both on a global scale, and in individual ocean basins.

Dr. Kevin Trenberth and his team have made a unique contribution through the investigation of climate variability and trends in the past, and through the use of models and other creative efforts to reconstruct river discharge into the oceans across the planet for almost 1000 river basins.

Natural climate variability of the Arctic atmosphere, the impact of Greenland and PBL stability changes K. Dethloff *, A. Rinke *, W. Dorn *, D. Handorf *, J. H. Christensen ** * AWI Potsdam, ** DMI Copenhagen Unforced and forced long - term model integrations from 500 to 1000 years with global coupled atmosphere - ocean - sea - ice models have been analysed in order to find out whether the different models are able to simulate the North Atlantic Oscillation (NAO) similar to the real atmosphere.

Here we show that fluctuations in Antarctic Ice Sheet discharge caused by relatively small changes in subsurface ocean temperature can amplify multi-centennial climate variability regionally and globally, suggesting that a dynamic Antarctic Ice Sheet may have driven climate fluctuations during the Holocene.

The community [studying] seasonal and longer climate variability was (and still is) dominated by the ocean community and especially a decade ago [the El Niño Southern Oscillation] ENSO was the only boundary forcing that anyone was paying attention to.

Ice - sheet responses to decadal - scale ocean forcing appear to be less important, possibly indicating that the future response of the Antarctic Ice Sheet will be governed more by long - term anthropogenic warming combined with multi-centennial natural variability than by annual or decadal climate oscillations.»

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.

«Climate forcing results in an imbalance in the TOA radiation budget that has direct implications for global climate, but the large natural variability in the Earth's radiation budget due to fluctuations in atmospheric and ocean dynamics complicates this picture.Climate forcing results in an imbalance in the TOA radiation budget that has direct implications for global climate, but the large natural variability in the Earth's radiation budget due to fluctuations in atmospheric and ocean dynamics complicates this picture.climate, but the large natural variability in the Earth's radiation budget due to fluctuations in atmospheric and ocean dynamics complicates this picture.»