Sentences with phrase «with changes in heat content»

The regional patterns of anthropogenic CO2 storage are consistent with those of CFCs and with changes in heat content.

Not exact matches

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However, radiation changes at the top of the atmosphere from the 1980s to 1990s, possibly related in part to the El Niño - Southern Oscillation (ENSO) phenomenon, appear to be associated with reductions in tropical upper - level cloud cover, and are linked to changes in the energy budget at the surface and changes in observed ocean heat content.

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.

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.

And this is just one element in the sea level rise — small ice caps are melting faster, thermal expansion will increase in line with ocean heat content changes and Antarctic ice sheets are also losing mass.

The ocean heat content analysis by Barnett (and in other groups) show that the changes are most consistent with the GHGs becoming increasingly dominant over this time.

The key points of the paper are that: i) model simulations with 20th century forcings are able to match the surface air temperature record, ii) they also match the measured changes of ocean heat content over the last decade, iii) the implied planetary imbalance (the amount of excess energy the Earth is currently absorbing) which is roughly equal to the ocean heat uptake, is significant and growing, and iv) this implies both that there is significant heating «in the pipeline», and that there is an important lag in the climate's full response to changes in the forcing.

My guess is that heat content changes related to ENSO events and their interaction with decadal variability in the gyres are probably responsible, but I'm basically just handwaving here.

Previous work by Barnett's group showed that coupled models when forced with greenhouse gases did give ocean heat content changes similar to that shown in the data.

If you can't keep up with annual - decadal changes in the TOA radiative imbalance or ocean heat content (because of failure to correctly model changes in the atmosphere and ocean due to natural variability), then your climate model lacks fidelity to the real world system it is tasked to represent.

Gavin, you forget the Hadcm3 model tests with 10 x solar and 5 x volcanic, which found that the model probably underestimates solar variations with a factor 2... Btw, the largest changes in the ocean heat content are found in the (sub) tropics, where insolation differences are at their maximum.

Instead, they discuss new ways of playing around with the aerosol judge factor needed to explain why 20th - century warming is about half of the warming expected for increased in GHGs; and then expand their list of fudge factors to include smaller volcanos, stratospheric water vapor (published with no estimate of uncertainty for the predicted change in Ts), transfer of heat to the deeper ocean (where changes in heat content are hard to accurately measure), etc..

Dana, I think you are pushing in the right direction with this; heat content is a much more direct measure of the underlying changes to the climate system than average air temperatures and climate science communicators should make heat content their first response to the suggestion that global warming is something that waxes and (allegedly, recently) wanes.

This was my mental equation dF = dH / dt + lambda * dT where dF is the forcing change over a given period (1955 - 2010), dH / dt is the rate of change of ocean heat content, and dT is the surface temperature change in the same period, with lambda being the equilibrium sensitivity parameter, so the last term is the Planck response to balance the forcing in the absence of ocean storage changes.

The cloud cover changes are consistent with changes in ocean heat content in the satellite era.

The upper figure shows changes in ocean heat content since 1958, while the lower map shows ocean heat content in 2017 relative to the average ocean heat content between 1981 and 2010, with red areas showing warmer ocean heat content than over the past few decades and blue areas showing cooler.

However, the spatial pattern of the PDO includes warming in some places and cooling in others; in fact, changes consistent with the PDO can be seen in the geographic pattern of observed ocean heat content changes.

It is clear that natural variability has dominated sea level rise during the 20th century, with changes in ocean heat content and changes in precipitation patterns.

With a dominant internal component having the structure of the observed warming, and with radiative restoring strong enough to keep the forced component small, how can one keep the very strong radiative restoring from producing heat loss from the oceans totally inconsistent with any measures of changes in oceanic heat contWith a dominant internal component having the structure of the observed warming, and with radiative restoring strong enough to keep the forced component small, how can one keep the very strong radiative restoring from producing heat loss from the oceans totally inconsistent with any measures of changes in oceanic heat contwith radiative restoring strong enough to keep the forced component small, how can one keep the very strong radiative restoring from producing heat loss from the oceans totally inconsistent with any measures of changes in oceanic heat contwith any measures of changes in oceanic heat content?

''... how can one keep the very strong radiative restoring from producing heat loss from the oceans totally inconsistent with any measures of changes in oceanic heat content?»

In a discussion with Sydney Levitus, the Lead Author of «World ocean heat content and thermosteric sea level change (0 — 2000 m), 1955 — 2010» I was intrigued by something he asked me to look up in the paper, which at that time I had not read yeIn a discussion with Sydney Levitus, the Lead Author of «World ocean heat content and thermosteric sea level change (0 — 2000 m), 1955 — 2010» I was intrigued by something he asked me to look up in the paper, which at that time I had not read yein the paper, which at that time I had not read yet:

We present an analysis to illustrate why temperature values at specific levels will depend on wind speed, and with the same boundary layer heat content change, trends in temperature should be expected to be different at every height near the surface when the winds are light, as well as different between light wind and stronger wind nights.

Elsewhere on this site there is a graph of overall ocean heat content which is building indicating that while the sst is decreasing slightly the overall ocean is warming, It is likely that this overall ocean warming which has nothing to do with changes to the atmospheric temperature because it is the sea surface and not the deep ocean that is in contact with the atmosphere is what is resulting in the overall rise in atmospheric CO2 concentration which is currenly increasing at 2ppmv / year.

The way I see it, if you get various data points of ocean heat content, you then have to plot a trend to see how that is changing with the other changes in incoming and outgoing radiation and greenhouse gases andland use etc..

«Our results demonstrate how synergistic use of satellite TOA radiation observations and recently improved ocean heat content measurements, with appropriate error estimates, provide critical data for quantifying short - term and longer - term changes in the Earth's net TOA radiation imbalance.

It is an interesting paper, but I would suggest caution: Argo measurements of heat content, combined with earlier (and spotty) measurements, suggest there has not been a great deal of change in the rate of heat accumulation over the past 20 years.

A change in ocean heat content can also alter patterns of ocean circulation, which can have far - reaching effects on global climate conditions, including changes to the outcome and pattern of meteorological events such as tropical storms, and also temperatures in the northern Atlantic region, which are strongly influenced by currents that may be substantially reduced with CO2 increase in the atmosphere.

Here's one of the many problems I have with their figures for the change in ocean heat content.

As seen in Figure 4 - 3, the ocean warming occurred in the later years of the record with little change in globally averaged ocean heat content prior to 1997.

Apparently, these GCMs can «forecast» climate change only «a posteriori», that is, for example, if we want to know what may happen with these GCMs from 2012 to 2020 we need first to wait the 2020 and then adjust the GCM model with ad - hoc physical explanations including even an appeal to an unpredictable «red - noise» fluctuation of the ocean heat content and flux system (occurring in the model in 2055 and 2075!)

One of the points Roy made: a change in ocean heat content is presented in terms that look impressive: Joules times 10 ^ 22 or Joules with oodles of trailing zeroes.

«It's clear with more «heat in the kitchen from the Beltway» that further modest changes to their business model around advertising and news feeds / content could be in store over the next 12 to 18 months,» he wrote.