Sentences with phrase «global heat content of»

global heat content of the Earth's climate (depending of course on how you define it), but no one alive today is anywhere close to being able to do so.

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.

He is also correct that global heat content of the ocean is a huge part of warming or the lack thereof, but his next statement is not entirely correct.

As such I am extremely skeptical of goofy claims to know what the global heat content of the ocean is to hundredths of a degree.

Not exact matches

ocean system is faster than the global average since the 1960s; there is a small but widespread increase in heat content of the Arctic Oceanâ??

For as much as atmospheric temperatures are rising, the amount of energy being absorbed by the planet is even more striking when one looks into the deep oceans and the change in the global heat content (Figure 4).

With GRACE retrievals of surface mass commencing in 2002 and ARGO - derived estimates of global ocean heat content beginning a few years later, an era of unprecedented diagnostic capabilities began.

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.

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.

Based on the linear trend, for the 0 to 3,000 m layer for the period 1961 to 2003 there has been an increase of ocean heat content of approximately 14.2 ± 2.4 × 1022 J, corresponding to a global ocean volume mean temperature increase of 0.037 °C during this period.

However, the large - scale nature of heat content variability, the similarity of the Levitus et al. (2005a) and the Ishii et al. (2006) analyses and new results showing a decrease in the global heat content in a period with much better data coverage (Lyman et al., 2006), gives confidence that there is substantial inter-decadal variability in global ocean heat content.

A major feature of Figure 5.1 is the relatively large increase in global ocean heat content during 1969 to 1980 and a sharp decrease during 1980 to 1983.

Time series of global annual ocean heat content (1022 J) for the 0 to 700 m layer.

Gleckler, P.J., K.R. Sperber, and K. AchutaRao, 2006a: The annual cycle of global ocean heat content: observed and simulated.

The estimated increase of observed global ocean heat content (over the depth range from 0 to 3000 meters) between the 1950s and 1990s is at least one order of magnitude larger than the increase in heat content of any other component.

The authors note that more than 85 % of the global heat uptake (Q) has gone into the oceans, including increasing the heat content of the deeper oceans, although their model only accounts for the upper 700 meters.

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.

Instead, they have agreed to the new goal of limiting global ocean heat content to 1024 Joules.

Numerous denier arguments involving slight fluctuations in the global distribution of warmer vs cooler sea surface areas as supposed explanations of climate change neglect all the energy that goes into ocean heat content, melting large ice deposits and so forth.

For a long time now climatologists have been tracking the global average air temperature as a measure of planetary climate variability and trends, even though this metric reflects just a tiny fraction of Earth's net energy or heat content.

Bayesian estimation of climate sensitivity based on a simple climate model fitted to observations oh hemispheric temperature and global ocean 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.

A fluctuation in the location of slightly warmer surface water could hardly cause the global increase in ocean heat content.

A review of global ocean temperature observations: Implications for ocean heat content estimates and climate change

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.

It is certainly true that a very small temperature bias that is not random from instrument to instrument, but instead is the same over a large number of profiles can create systematic error in global estimates of ocean heat content.

The connection between global warming and the changes in ocean heat content has long been a subject of discussion in climate science.

[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.

The global amplitude (down to 300 m) is between 1E +22 and 3E +22 J, compared to ~ 4E +22 J for the increase in heat content in the period 1955 - 2003 [note: there seems to be a discrepancy in units between the story of Levitus and the data].

If La Nina / El Nino can affect global air temperatures in a period of a few years, than other changes in ocean currents (driven by AGW) can affect global atmospheric heat content in a few years.

Bayesian estimation of climate sensitivity based on a simple climate model fitted to observations of hemispheric temperatures and global ocean heat content

I do not think atmospheric temperatures are a consistent and precise proxy for the total heat content of the global system.

I also tried to find an estimate of the net effect of hurricane activity on upper ocean heat content; there are some reports on individual hurricanes (http://www.aoml.noaa.gov/phod/cyclone/data/pubs/Opal.pdf) but I couldn't find any global estimates.

And yet, when you do trends of global data you are averaging air temperatures over intervals where the heat content is not continuous, and thus the trend that is the average temperature does not show the actual trend of the heat content.

This makes perfect sense since there is little to no evidence of an anthropogenic global warming effect on global Ocean Heat Content (OHC) data.

But if you google «noaa ocean heat and salt content» and compare the first two graphs («0 - 700m global ocean heat content» versus «0 - 2000m global ocean heat content») you will see that the sea SURFACE temperature is much more reflective of what is going on in the atmosphere than the oceans depths.

-- Balmaseda (2013) «Distinctive climate signals in reanalysis of global heat content»

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).

Because minimum temperatures in the stable boundary layer are not very robust measures of the heat content in the deep atmosphere and climate models do not predict minimum temperatures well, minimum temperatures should not be used as a surrogate for measures of deep atmosphere global warming.»

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.

«Global Ocean Heat Content 1955 - 2008 in Light of Recently Revealed Instrumentation Problems.»

The estimate of increase in global ocean heat content for 1971 — 2010 quantified in Box 3.1 corresponds to an increase in mean net heat flux from the atmosphere to the ocean of 0.55 W m — 2.

Several researchers have pointed to various other indicators as evidence of «global warming», e.g., Arctic sea ice records, ocean heat content measurements, or animal and plant migration patterns.However, all of these indicators are either too short to compare recent temperatures to temperatures before the 1950s, or else are affected by non-climatic biases.

Ultimately our paper shows that all three of the main conclusions in DK12 are faulty: the rate of OHC increase has not slowed in recent years, there is no evidence for «climate shifts» in global heat content data, and the recent OHC data do not support the conclusion that the net climate feedback is negative or that climate sensitivity is low.

[12] Magne Aldrin et al., «Bayesian Estimation of Climate Sensitivity Based on a Simple Climate Model Fitted to Observations of Hemispheric Temperatures and Global Ocean Heat Content,» Environmetrics, Vol.

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.

Our original draft blog post noted that DK12 had effectively been «pre-bunked,» as several recent studies have reconciled global heat content data with top of the atmosphere (TOA) energy imbalance measurements with no evidence of a long - term slowdown in global warming.

6, No. 6 (June 2013), pp. 415 — 416; Magne Aldrin et al., «Bayesian Estimation of Climate Sensitivity Based on a Simple Climate Model Fitted to Observations of Hemispheric Temperatures and Global Ocean Heat Content,» Environmetrics, Vol.

The demonstrated ability of GRACE to measure interannual OBP variability on a global scale is unprecedented and has important implications for assessing deep ocean heat content and ocean dynamics.

Ocean warming: «Assessing recent warming using instrumentally homogeneous sea surface temperature records» «Tracking ocean heat uptake during the surface warming hiatus» «A review of global ocean temperature observations: Implications for ocean heat content estimates and climate change» «Unabated planetary warming and its ocean structure since 2006»