* There is no such thing as a meaningful «Earth» temperature, as some regions are cooling, some are warming, the depths of the ocean have different
levels of heat content that can not be uniformly measured against a mean, etc..
While coal with higher
levels of heat content, coking characteristics, and lower sulfur levels is typically more valuable, other factors such as location and supply and demand play a significant role.
Not exact matches
I was able to control the
level of heat and the salt
content from making my own spice mix and my chili wound up being incredibly flavorful.
We're convinced that this relatively low
level of heat was important in providing steamed cabbage with its higher AITC
content.
The region also experienced the highest rates
of sea -
level rise over the world, indicating large increases in ocean
heat content and leading to substantial impacts on small island states in the region.
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.
Figure 3 is the comparison
of the upper
level (top 700m) ocean
heat content (OHC) changes in the models compared to the latest data from NODC and PMEL (Lyman et al (2010), doi).
In the Common Era before the 21st century, changes in ocean
heat content and in mountain glaciers were likely the main drivers
of global sea -
level change.
We're convinced that this relatively low
level of heat was important in providing steamed cabbage with its higher AITC
content.
In Limited trim
level, the Avalon Hybrid embarrasses the ES 300h in feature
content with goodies such as blind spot warning with cross-traffic alert, a three - zone climate system with controls for rear passengers, an upgraded JBL stereo, genuine leather instead
of the ES 300h's standard imitation leather,
heated front and rear seats plus ventilated front seats, a power rear sunshade and wireless phone charging with a compatible phone (and exhale).
That's because we've tracked down 10 cars with affordable MSRPs that still deliver impressive
levels of upscale
content, including leather seating surfaces, LED lights, mobile Wi - Fi hotspots, and
heated and ventilated seats.
This means that, e.g., if
heat moves from the tropical surface water (temp about 25C) to surface waters at lower temps, the net effect is a subsidence
of sea
level — even without any change in total
heat content.
I would
of though ocean
heat content / sea
level would be a far more robust metric to gauge global change, particularly if modern values are stitched on the end.
With ocean
heat content, including the IPWP, running at record high
levels (literally off the chart), how much energy is released in this El Niño and how quickly it fills back in is
of keen interest to me.
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.
C isothermic
level in the pacific appeared to rise from an average
of 400 meters to about 100 meters recently; I find myself wondering then how is it that the oceans
heat content is dropping, the solar input appears to be consistant, that one
of the GEWEX comitties appears to indicate that the atmospheric water vapor seems to be decreasing.
The latter has an omega - 3
content that will never exceed 30 percent, since that is the maximum
level of fatty acids occurring in the fish from which its taken, and it must be
heated in order to release those stored fats.
The influence
of anthropogenic forcing has also been detected in various physical systems over the last 50 years, including increases in global oceanic
heat content, increases in sea
level, shrinking
of alpine glaciers, reductions in Arctic sea ice extent, and reductions in spring snow cover (Hegerl et al., 2007).
The appearance
of the first studies on Ocean
Heat Content during the 2000's would have been one
of the significant factors in the IPCC increasing its
level of confidence that AGW was real in its 4th report in 2007.
And
of course, the issue
of the consistent rise in the best metric
of Earth's energy balance - ocean
heat content and the closely related sea
level rise, get's ignored as though, through some miracle, a warming ocean holding in the bulk
of the anthropogenic energy imbalance gives we troposphere dwelling creatures a free pass.
We provide updated estimates
of the change
of ocean
heat content and the thermosteric component
of sea
level change
of the 0 — 700 and 0 — 2000 m layers
of the World Ocean for 1955 — 2010.
The 2009 State
of the Climate Report
of the US National Oceanic and Atmospheric Administration (NOAA) tells us that climate change is real because
of rising surface air temperatures since 1880 over land and the ocean, ocean acidification, sea
level rise, glaciers melting, rising specific humidity, ocean
heat content increasing, sea ice retreating, glaciers diminishing, Northern Hemisphere snow cover decreasing, and so many other lines
of evidence.
We provide updated estimates
of the change
of heat content and the thermosteric component
of sea
level change
of the 0 - 700 and 0 - 2000 m layers
of the world ocean for 1955 - 2010.
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.
The 2012 paper, World Ocean
Heat Content and Thermosteric Sea
Level change (0 - 2000 m), 1955 - 2010, by Levitus et al. points to the fact that over the study's span, to a depth
of 2000 meters, the oceans have warmed by an average
of 0.09 C.
«The
heat content of surface air (i.e., z right above ground
level, so that z = 0 can be assumed) can be expressed as:
Curry also argues that the rate
of sea
level rise during 1930 — 1950 was similar to that in recent years, according to the IPCC, which suggests that ocean
heat content was increasing at a similar rate to today.
In the IPCC SPM statement cited above, they include evidence
of surface temperature, atmospheric temperature, ocean
heat content, snow and ice melt, and sea
level rise.
There is direct evidence from surface temperature data and atmospheric
heat content data (both data sets with a relatively high
level of maturity)
of a plateau or hiatus
of the warming for the past 16 years.
Since ENSO is a coupled ocean - atmosphere process, I have presented its impact on and the inter-relationships between numerous variables, including sea surface temperature, sea
level, ocean currents, ocean
heat content, depth - averaged temperature, warm water volume, sea
level pressure, cloud amount, precipitation, the strength and direction
of the trade winds, etc..
I've presented videos and gif animations to show the impacts
of ENSO on ISCCP Total Cloud Amount data (with cautions about that dataset), CAMS - OPI precipitation data, NOAA's Trade Wind Index (5S - 5N, 135W - 180) anomaly data, RSS MSU TLT anomaly data, CLS (AVISO) Sea
Level anomaly data, NCEP / DOE Reanalysis - 2 Surface Downward Shortwave Radiation Flux (dswrfsfc) anomaly data, Reynolds OI.v2 SST anomaly data and the NODC's ocean
heat content data.
And while indicators like ocean
heat content may respond more quickly or dramatically to the carbon emissions that cause climate change, surface temperature is more closely related to the effects
of climate change — and the effects, after all, are what climate policies at any
level are intended to ease.
I'm inclined to think that Ocean
Heat Content, trends in land ice and Sea
levels are more appropriate indicators
of global climate change than surface air temperatures, but that's another issue.
Now
of course I well understand the issues with ocean
heat content measurements, especially prior to 2003 or so, but I think there is enough reliability to give you a good picture
of the overall energy imbalance effects rippling down to the atmosphere and oceans as reflected by the 1 w / m ^ 2 TOA imbalance induced by the rising
levels of greenhouse gases.
So, for example, if we go through a period
of relative higher solar output, and less volcanic activity, relatively less cloudiness, and higher greenhouse gas
levels, these would all tend to increase ocean
heat content.
Once established, the
heat content of the air at ground
level is enough to keep the vortex going.
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 yet:
Actually Fielding's use
of that graph is quite informative
of how denialist arguments are framed — the selected bit
of a selected graph (and don't mention the fastest warming region on the planet being left out
of that data set), or the complete passing over
of short term variability vs longer term trends, or the other measures and indicators
of climate change from ocean
heat content and sea
levels to changes in ice sheets and minimum sea ice
levels, or the passing over
of issues like lag time between emissions and effects on temperatures... etc..
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of eating fish
«The
heat content of the upper ocean is a key climate indicator, contributing to a substantial portion
of the global sea
level rise.
The La Nina event
of 1998/99/00 / 01 recharged the
heat content released by the 1997/98 El Nino and returned the tropical Pacific Ocean Heat Content to the new higher levels established during the 1995/96 La N
heat content released by the 1997/98 El Nino and returned the tropical Pacific Ocean Heat Content to the new higher levels established during the 1995/96 L
content released by the 1997/98 El Nino and returned the tropical Pacific Ocean
Heat Content to the new higher levels established during the 1995/96 La N
Heat Content to the new higher levels established during the 1995/96 L
Content to the new higher
levels established during the 1995/96 La Nina.
You can't be possibly thinking that the movement
of air parcels and their decompression and later compression is a process that results in an increase
of the
heat content and somehow balances out at today's observed
levels?
And the 1998/99/00 / 01 La Nina recharged the tropical Pacific Ocean
Heat Content after the 1997/98 El Nino, returning it to the new higher
level established by the La Nina
of 1995/96.
How did they calculate ocean
heat content at 2000 meters below sea
level, prior to start
of the ARGO program?
What he does not do, and should have done is plotted the change in the effect over time against some emperical measure
of either temperature or surface
heat content (either OHC directly for when we have the data, or glacial extents, or sea
levels).
I would define the «
heat content of the system» as a measurement
of the energy
levels of the seas, ground and atmosphere combined.
I basically agree, it's about thermal response (as a proxy for
heat content AKA energy
levels) from readings / calculations
of the atmosphere's thermal profile in bands, if we're speaking
of satellites.
To say nothing
of the warming trends also noticed in, for example: * ocean
heat content * wasting glaciers * Greenland and West Antarctic ice sheet mass loss * sea
level rise due to all
of the above * sea surface temperatures * borehole temperatures * troposphere warming (with stratosphere cooling) * Arctic sea ice reductions in volume and extent * permafrost thawing * ecosystem shifts involving plants, animals and insects
In addition, multidecadal measurements
of steric sea
level rise (a rise due to thermal expansion
of sea water), and
of ocean
heat content have also been consistent with the temperature trends.
To be fair, Rahmstorf is arguing against using ocean
heat content in the context
of a «climate policy target», R Gates has suggested it in the context
of «gains in Earth's climate system energy
levels».