Sentences with phrase «role of the ocean heat»

The role of ocean heat transport in the global climate response to projected Arctic sea ice loss.

Not exact matches

Scientists can measure how much energy greenhouse gases now add (roughly three watts per square meter), but what eludes precise definition is how much other factors — the response of clouds to warming, the cooling role of aerosols, the heat and gas absorbed by oceans, human transformation of the landscape, even the natural variability of solar strength — diminish or strengthen that effect.

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

In May, a team of researchers announced that hurricanes play an underappreciated role in how heat is regulated in the oceans.

The ocean plays a critical role in climate and weather, serving as a massive reservoir of heat and water that influences tropical storms, El Nin?o, and climate change.

Natural variability in the amount of heat the oceans absorb may have played a role.

Because ocean currents play a major role in transporting the planet's heat and carbon, the ECCO simulations are being used to understand the ocean's influence on global climate and the melting of ice in polar regions.

Pandolfi and colleagues review the threats posed to coral reefs by increased ocean heat content and acidification and point to the role of evolution in buffering populations.

Ocean circulation drives the movement of warm and cold waters around the world, so it is essential to storing and regulating heat and plays a key role in Earth's temperature and climate.

Oceans cover 71 percent of the earth's surface and have a huge capacity to store heat, playing a critical role in the climate system.

However, lacking global observations of surface mass and ocean heat content capable of resolving year to year variations with sufficient accuracy, comprehensive diagnosis of the events early in the altimetry record (e.g. such as determining the relative roles of thermal expansion versus mass changes) has remained elusive.

Over the period 1984 — 2006 the global changes are 0.28 °C in SST and − 9.1 W m − 2 in Q, giving an effective air — sea coupling coefficient of − 32 W m − 2 °C − 1... [D] iminished ocean cooling due to vertical ocean processes played an important role in sustaining the observed positive trend in global SST from 1984 through 2006, despite the decrease in global surface heat flux.

How 2015 will shape up is, of course, uncertain, but that ocean heat will play a role, as water responds much more slowly to changes in heat than land.

The transfer of heat energy between the atmosphere and the ocean isn't well understood, including the roles of wind, currents and ocean conditions.

ECCO model - data syntheses are being used to quantify the ocean's role in the global carbon cycle, to understand the recent evolution of the polar oceans, to monitor time - evolving heat, water, and chemical exchanges within and between different components of the Earth system, and for many other science applications.

Since OHC uptake efficiency associated with surface warming is low compared with the rate of radiative restoring (increase in energy loss to space as specified by the climate feedback parameter), an important internal contribution must lead to a loss rather than a gain of ocean heat; thus the observation of OHC increase requires a dominant role for external forcing.

As for how heat transfers to the ocean: I'm just a musician, but what's the role of La Nina in this?

As the ocean circulation takes up the role of transporting heat poleward the atmospheric circulation spins down.

c) The uncertainties in the ocean heat uptake may be underestimated by Levitus, and there are additional uncertainties regarding the role of deep ocean heat uptake (Meehl et al. 2011 Nature Climate Change).

Others include, the role of the Sun (being the main heat source), the vast oceans which cover over 70 % of the Earth's surface (and the natural factors which determine the storage and release of CO2 back into the atmosphere), water - vapour being the dominant greenhouse gas comprising 98 % of the atmosphere, the important role of low - level clouds which is thought to be a major factor in determining the natural variation of climate temperatures (P.S. Significantly, computer - models are unable to replicate cloud - formation and coverage — which again — injects bias into model).

Surface temperature is an imperfect gauge of whether the earth has been warmed by an imbalance between incoming radiation from the sun, and outgoing radiation, because of the role of ocean currents in the distribution of heat between deeper and surface waters.

The variation of net global sensible and latent heat flux from the ocean, being impacted greatly by ENSO, the PDO, and the AMO, plays the dominant role in the fluctuations in total energy output measured at the TOA over short - term time frames.

Many factors — like the thermohaline circulation, which reverses direction at the poles as warm salty water releases heat into the air and sinks down to the bottom — are heavily influenced by the ocean's salinity, and thus, the movement of freshwater into and around the Arctic plays an important role in shaping both regional and global climate.

His reference to the oceans» role as a sink for CO2 and heat is significant in the present debate about the apparent slight slow - down in the pace of atmospheric warming and the likelihood that the heat is going into the oceans instead.

Natural variability in the amount of heat the oceans absorb may have played a role.

Therefore, the finding that surface heat flux is out of the ocean at low frequencies does not demonstrate an important role for the ocean circulation in driving the AMO.

I agree that the specific heat and storage capacity of things like the oceans (especially) play a role in regulating the Earth, but you have to bear in mind that from the point of view of outer space, the Earth is a system with precisely one channel.

Perhaps the negative feedback of cloud cover has kicked in, dampening global warming, or the ocean absorption of atmospheric heat is playing a new and more decisive role.

Although polynyas only cover a small fraction of the ocean surface, the transfer of heat and water vapor is so large that they play a significant role in the climate system leading to modifications of both atmosphere and ocean properties.

As the dominant reservoir for heat, the oceans are critical for measuring the radiation imbalance of the planet and the surface layer of the oceans plays the role of thermostat and heat source / sink for the lower atmosphere.

«Greenland ice takes on a new role in the climate change story, not just indicating change and contributing to sea level rise, but possibly playing an important role in destabilizing regional if not global ocean circulation that naturally exchanges heat north - south,» said Jason Box of the Geological Survey of Denmark and Greenland, and a study co-author, in an email to Mashable.

Second, a series of mildly explosive volcanoes, which increased stratospheric particles, likely had more of a cooling effect than previously recognized.35, 36,37 Third, the high incidence of La Niña events in the last 15 years has played a role in the observed trends.29, 38 Recent analyses13 suggest that more of the increase in heat energy during this period has been transferred to the deep ocean than previously.

Several factors play a role when a hurricane gains more power rapidly, including the temperature of the surface of the ocean, humidity, characteristics of the clouds, the heat content in the ocean, and the direction of the wind at the surface compared to miles above.

Ocean heat content paleodata, which is far more critical and relevant to climate than CET, would tell us that indeed, the mega-volcanoes of 1257 and 1453 played major roles in the LIA.

This is particularly true for a long term response to CO2 forcing, because of the major role of the deep ocean (down to 4000 meters and even below) in long term heat storage needed for equilibrium.

The role of unforced natural variations is not well known for the early years, but their net effect from 1950 to the present can be concluded to be small based on observed increases in ocean heat content that preclude a major exit of heat from the oceans onto the surface and atmosphere.

The point to be made regarding that paper is similar to the one I made above: there is evidence that internal variability (to the extent it can be equated with the AMO) has affected the rate at which anthropogenic forcing has warmed the surface, but most of the warming must have been forced, with the observed positive ocean heat uptake data excluding more than a very minor role for internal variability in the warming itself with very high confidence.

On account of its ability to absorb and transport enormous amounts of heat, the ocean also plays an outsized role in climate change and is an important factor in the explaining the asymmetric response of the north and south poles to the changing climate.

These measurements could allow climatologists to determine the role of the solar and radiative forcings on the increase in heat content of the late 20th century relative to that of the deep ocean circulation.

Northward ocean heat transport achieved by the AMOC is responsible for the relative warmth of the Northern Hemisphere, compared to the Southern Hemisphere, and is thought to play a role in setting the mean position of the Inter-Tropical Convergence Zone north of the equator.

Gavin, I think it would be worth adding to the post 1) the main reason why there was so much doubt about the Lyman et al results (the unphysical melt amounts for 2003 - 5), 2) the expected role of GRACE in obtaining a reliable result, 3) the fact that the ARGOs don't measure the deep oceans, and 4) that it's inappropriate to take the remaining ARGO data (shown in the Lyman et al correction to be essentially flat for the last two years) and draw any conclusions about ocean heat content trends for that period.

This current plays a crucial role linking the Indian, Atlantic and Pacific oceans, while also acting as one of the great heat and carbon sinks for the atmosphere.

Dr. Judith Curry: The uncertainties in ocean heat content below 700 m are very substantial, see http://judithcurry.com/2014/01/21/ocean-heat-content-uncertainties/... The role of internal ocean behavior in climate change was almost completely neglected up the AR4; the AR5 takes it a bit more seriously.

To help avoid the most dangerous consequences of climate change, ranging from extreme heat, droughts, and storms to acidifying oceans and rising sea levels, the United States must play a lead role and begin to cut its heat - trapping emissions today — and aim for at least an 80 percent drop from 2005 levels by 2050.

«We need a longer data record of hurricane statistics,» he said, «and we need to understand more about the role hurricanes play in regulating the heat balance and circulation in the atmosphere and oceans.»

9.3.1 Global Mean Response 9.3.1.1 1 % / yr CO2 increase (CMIP2) experiments 9.3.1.2 Projections of future climate from forcing scenario experiments (IS92a) 9.3.1.3 Marker scenario experiments (SRES) 9.3.2 Patterns of Future Climate Change 9.3.2.1 Summary 9.3.3 Range of Temperature Response to SRES Emission Scenarios 9.3.3.1 Implications for temperature of stabilisation of greenhouse gases 9.3.4 Factors that Contribute to the Response 9.3.4.1 Climate sensitivity 9.3.4.2 The role of climate sensitivity and ocean heat uptake 9.3.4.3 Thermohaline circulation changes 9.3.4.4 Time - scales of response 9.3.5 Changes in Variability 9.3.5.1 Intra-seasonal variability 9.3.5.2 Interannual variability 9.3.5.3 Decadal and longer time - scale variability 9.3.5.4 Summary 9.3.6 Changes of Extreme Events 9.3.6.1 Temperature 9.3.6.2 Precipitation and convection 9.3.6.3 Extra-tropical storms 9.3.6.4 Tropical cyclones 9.3.6.5 Commentary on changes in extremes of weather and climate 9.3.6.6 Conclusions

The new knowledge from this paper, the way I read it, is the revelation of the role of winds for vertical mixing / diffusion of heat in a new analysis of the world oceans.

The case for the strength of the AMOC playing an important role in setting the rate of heat uptake by the oceans and the degree of disequilibrium in global mean surface temperature is made in particular by Winton et al 2014 and Kostov et al 2013, who describe two rather different perspectives on why you should expect a relationship between these two quantities.

Alexander M. A. and J. D. Scott (November 2008): The Role of Ekman Ocean Heat Transport in the Northern Hemisphere Response to ENSO.

Perovich et al., «Increasing solar heating of the Arctic Ocean and adjacent seas, 1979 — 2005: Attribution and role in the ice - albedo feedback», GRL 2007, which says: