(By the way, neither has sea - level rise due to thermal expansion, because the thermal expansion coefficient is several times larger for warm surface waters than for the cold deep waters — again it is warming in the surface layers that counts, while
the total ocean heat content tells us little about the amount of sea - level rise.)
Thus in terms of impacts the problem is surface warming — which is described much better by actually measuring surface temperatures rather than
total ocean heat content.
Of course 70 % of the globe is covered in water, we should look for global changes by studying changes in
total ocean heat content (TOHC).
Thermal expansion is the main driver of steric changes (salinity is also a minor factor) so steric sea level rise is another measure of
total ocean heat.
Since NOAA referred to surface water and
total ocean heat content, they are clearly cherry - picking for their agenda.
«This method is a radically new way to measure change in
total ocean heat,» Severinghaus said in a post on the Scripps website.
If you transferred all the energy from the atmosphere into the ocean it wouldn't raise
total ocean heat substantially because the ocean's heat capacity is thousands of times that of the atmosphere.
For the estimation of
the total ocean heat content (OHC) a lesser precision would probably be almost as good, because errors of individual measurements always cancel to a large extent as long as the floats do not have common systematic errors.
As for sea temperatures, they are less significant for analyzing «global warming» than estimated
total ocean heat content.
1cm3 takes 4.19 J per 1K = >
total ocean heat content per 1K is: 1.3 E9 * 1E9 * 1E6 * 4.19 = 5.45 E24J.
Anthropogenic GHG warming is about the Earth's energy balance, and thus, looking at an average global near - surface temperature, or
the total ocean heat content can tell us something useful about that energy balance.
I'd just assumed that: man's path =
total ocean heat content leash length = bounds on energy transfers dog jiggles driven by ocean oscillations, solar jiggles, volcanoes...
One very important consideration to think about is that while surface temperature has a very high degree of variability, you do expect
total ocean heat content to vary a great deal less in response to a constant forcing.
total ocean heat content to 2009 appears to be about 20 × 10 to the 22nd power J. which I take it means Levitus et.al could be ignoring 8 % or so of the heat accumulating in the ocean.
«This method is a radically new way to measure change in
total ocean heat,» said Severinghaus.
Not exact matches
As
oceans contain around 80 % of the climate's
total energy,
ocean heat is a good measure of what's happening with our climate.
Some organization or groups of organizations likely with the National Oceanic Administration leading should come up with the mid Atlantic volcanic rift
heat output
totals for correlation with the
ocean currents to have a real time indication of where the
heat is going and what and where the temperature increases are located.
Scientists now estimate that the circulation of seawater through the oceanic crust accounts for 34 % of the
heat input into the global
oceans, about 25 % of the globe's
total heat input.
To calculate the Earth's
total heat content, the authors used data of
ocean heat content from the upper 700 metres.
From 1992 to 2003, the decadal
ocean heat content changes (blue), along with the contributions from melting glaciers, ice sheets, and sea ice and small contributions from land and atmosphere warming, suggest a
total warming (red) for the planet of 0.6 ± 0.2 W / m2 (95 % error bars).
If we had launched the Triana / DSCOVR climate satellite ten years ago, instead of mothballing it, we'd probably have robust answers to the energy budget question, and we could get the
ocean heat change by calculating the (
total energy change)- (atmospheric warming).
A
total of 2.3 million salinity profiles were used in this analysis, about one - third of the amount of data used in the
ocean heat content estimates in Section 5.2.2.
Can anybody refer to a paper that clearly describes to what extent the ENSO variability actually relates to changes in the
total thermal energy of the system (
oceans + air), and to what extent it's just
heat being shuffled around within the system from one place to another?
That is, although an El Nino episode is primarily concerned with re-distributing (but not changing the
total amount of)
heat in the
ocean / atmosphere system, the combined feedbacks would tend to increase the
heat in that system.
In these experiments the climate sensitivity was 2.7 deg C for a doubling of CO2, the net aerosol forcing from 1940 to 2000 was around -0.7 W / m2 (55 % of the
total forcing, -1.27, from 1850 to 2000), and the
ocean uptake of
heat was well - matched to recent observations.
And so far, you still have not replied to my points in 156 and 231 that explain where the
heat increase in the
total system of
ocean and atmosphere comes from and that demonstrates the physically impossibility of your main causal claim that all the
ocean heat content increase since 2000 is merely due to a transfer of
heat from the atmosphere, where you claim that all this
heat was in the atmosphere in 1979.
The objective of our study was to quantify the consistency of near - global and regional integrals of
ocean heat content and steric sea level (from in situ temperature and salinity data),
total sea level (from satellite altimeter data) and
ocean mass (from satellite gravimetry data) from an Argo perspective.
If the
ocean was completely well mixed this would take a long time, and the
total heat content would roughly quadruple by the time it stabilized.
Looking at the surface temperature and the
ocean heat content changes together though allows us to pin down the
total unrealised forcing (the net radiation imbalance) and demonstrate that the models are consistent with both the surface and
ocean changes.
I would be suprised if the increased flow of cold water from the melting polar icecaps could decrease the
total heat content of the
oceans, given the amount of additional
heat that must be in the
oceans that is causing the coral bleaching episodes throughout the tropics.
[Response: Theoretically you could have a change in
ocean circulation that could cause a drop in global mean temperature even while the
total heat content of the climate system increased.
If we call the deep
ocean the bottom 3 km, then, were it not for convection carrying the
heat to the surface, the
total geothermal
heat flux of about 20TW would raise the temperature of the deep
ocean by 1K every 4000 years or so.
The planet's
total heat buildup can be derived by adding up
heat content from the
ocean, atmosphere, land & ice..
use of
ocean heat uptake — which amounts to only ~ 86 % of
total heat uptake — as a measure of
total heat uptake despite the observational studies Marvel et al. critique using estimates that included non-
ocean heat uptake;
The
total heat store available in the
oceans is so large that it is capable of rendering changes in any Greenhouse Effect an irrelevance for all practical purposes.
Despite measurements of
total heat absorbed by the
oceans by Levitus et al. (2000) and Levitus et al. (2001), «20th - century sea level remains an enigma — we do not know whether warming or melting was dominant, and the budget is far from closed,» according to Munk (2003).
The
total change in
ocean heat, including deep water regions is the best gauge of global warming.
The specific
heat of water is 4 times higher than that of air, so that possesses low water 200 times as much
heat energy as the
total atmosphere (for the entire
ocean, this is even as much as 1200 times).
However because we don't measure
ocean heat content below 2000m (about half of the
total volume), the OHC you cite applies to the top half volume only, so the average dT in this part of volume is just under 0.1 K (0.08) consistent with the estimates.
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.
That initiated deep
ocean cooling and a
total reconfiguration of the global
ocean's vertical
heat structure.
Also global
heat content of the
ocean (which constitutes 85 % of the
total warming) has continued to rise strongly in this period, and ongoing warming of the climate system as a whole is supported by a very wide range of observations, as reported in the peer - reviewed scientific literature.
So the
total heat content of the
oceans has double in the past 16 years?
DK12 used
ocean heat content (OHC) data for the upper 700 meters of
oceans to draw three main conclusions: 1) that the rate of OHC increase has slowed in recent years (the very short timeframe of 2002 to 2008), 2) that this is evidence for periods of «climate shifts», and 3) that the recent OHC data indicate that the net climate feedback is negative, which would mean that climate sensitivity (the
total amount of global warming in response to a doubling of atmospheric CO2 levels, including feedbacks) is low.
Flatline in
total air
heat content, flatline in air temperature, and yet some energy is flowing from the air into the
ocean, going downwards.
One large tropical storm can release a
total heat energy from the
ocean of the order of 10 ** 20 joules.
Adding it all up, scientists estimate the
total amount of
heat warming the
oceans, land, and atmosphere and melting the ice is the equivalent of four Hiroshima atomic bombs worth every second.
The planet's
total heat build up can be derived by adding up the
heat content from the
ocean, atmosphere, land and ice..
The difference (if any) is tiny by comparison with the
total flux, and will result in the
oceans as a whole gradually acquiring or losing
heat and warming or cooling ever so slightly over time.
Although the Southern
Ocean occupies only 20 % of total ocean area, it absorbs three - quarters of the heat taken into the oceans, and approx half of the CO2 http://bit.ly/2f
Ocean occupies only 20 % of
total ocean area, it absorbs three - quarters of the heat taken into the oceans, and approx half of the CO2 http://bit.ly/2f
ocean area, it absorbs three - quarters of the
heat taken into the
oceans, and approx half of the CO2 http://bit.ly/2f4Odla