Sentences with phrase «calculate ocean heat»

Does anyone have the formula to calculate the ocean heat content from temperature data.

Information to calculate ocean heat content?

How did they calculate ocean heat content at 2000 meters below sea level, prior to start of the ARGO program?

http://www.realclimate.org/index.php/archives/2011/01/2010-updates-to-model-data-comparisons/ in this post comment 36 Gavin says that models where not used to calculate ocean heat content past 2003, so no one is using actual model output during this comparison.

This paper uses Argo buoy data to calculate ocean heat down to 2000 metres depth.

The second plot shows the calculated Ocean Heat Content from the «Callendar model» fitted with the above parameters, and compares it with the 0 - 700m data held by NOAA, based on Levitus.

Not exact matches

Ocean survey flight path and instrument deployment points over shaded ocean heat content (OHC) that was calculated from survey Ocean survey flight path and instrument deployment points over shaded ocean heat content (OHC) that was calculated from survey ocean heat content (OHC) that was calculated from survey data.

The team calculated the change in the amount of heat entering the ocean using a state - of - the - art high resolution ocean model developed and run by NOC scientists that is driven by surface observations.

By combining the ocean heating rates, TOA observations (figure 4) and other energy storage terms (land, atmosphere warming and ice melt), the authors calculated Earth's energy imbalance from January 2001 - December 2010 to be 0.5 (± 0.43) W / m2.

Rather than use a model - based estimate, as did Hansen (2005) and Trenberth (2009), the authors achieve this by calculating it from observations of ocean heat content (down to 1800 metres) from the PMEL / JPL / JIMAR data sets over the period July 2005 to June 2010 - a time period dominated by the superior ARGO - based system.

To calculate the Earth's total heat content, the authors used data of ocean heat content from the upper 700 metres.

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).

Ocean currents that may carry large amounts of heat are not calculated into the GCM, and thus we do not have a good estimate of the rate of energy transfer at the boundaries of specific sea - floor methane systems.

They calculate changes in heat flows, moisture changes, and other factors in three - dimensional grid boxes — and do so in Earth's atmosphere, at its surface, and beneath the surface of the oceans — with grid boxes interacting with their neighbors.

... I calculated that the earth's heat imbalance of 0.85 W / m2... can raise the temperature of the first meter of ocean by a degree in about 2 months if all the heat was totally contained in that first meter.

The models serve merely to quantify these basic facts more accurately, calculate the regional climate response, and compute effects (such as the expected increase in ocean heat content or sea level) which can be tested against observed data from the real world.

How is it that arguably the most important aspect of AGW (ie the Ocean Heat Content) has not been calculated from the model output past 2003?

Which implies that since the late» 40's - early» 50's we have had a data collection system deployed capable of measuring and tracking the annual TEMPERATURE of the top 2000 meters of the oceans of the world (necessary to calculate its heat content)-- all of them — with a precision and accuracy in the millidegree range.

In 1826 Joseph Fourier published a book in which he calculated that without de Saussure's heating mechanism as applied to the atmosphere there was not enough heat from the Sun to prevent the oceans from freezing over.

Comparisons of direct measurements with satellite data and climate models suggest that the oceans of the southern hemisphere have been sucking up more than twice as much of the heat trapped by our excess greenhouse gases than previously calculated.

1) the accurate aerosol forcing used is accurate 2) accurate ocean heat uptake records in recent years 3) the equation used does accurately calculate ECS

Because 5 gazillion Joules is a 0.2 C mixed layer (top ~ 300 meters) surface temperature rise (Figure 10, Historical ocean heat content calculated from HadSST and OHC, Levitus, 2009).

When the first analyses of Ocean Heat Content calculated from old temperature data from the oceans where first published in the early 2000's, they were described as the «Smoking Gun».

An early post by George mis - calculates ocean to air volumetric heat capacity, the actual ratio at the surface is 3200 to 1.

Essentially, Huber and Knutti take the estimated global heat content increase since 1850, calculate how much of the increase is due to various estimated radiative forcings, and partition the increase between increasing ocean heat content and outgoing longwave radiation.

«TCR and ECS are calculated by regressing ensemble - average decadal mean forcing or forcing minus ocean heat content change rate against ensemble - average temperature change.»

The surface temperature response, T, to a given change in atmospheric CO2 is calculated from an energy balance equation for the surface, with heat removed either by a radiative damping term or by diffusion into the deep ocean.

When calculating the heat capacity of the ocean, restrict attention to the oceanic mixed layer, which averages only 50m in depth.

The whole issue of heat diffusing from the surface to the deep ocean is a boundary value problem, in which values at each boundary (the heat input at the top, and the temperature of the deep ocean) are fixed, and used to calculate what happens in between.

Models that don't have an accurate figure for this time constant are inevitably wrong, since they can not calculate the time taken for heat to travel from atmosphere to the depths of the oceans.

Also — the ocean heat constant of 5 - 8 yrs calculated by Scafetta and others — is this related to (or reflected in) the ENSO cycle?

In particular is it something that could in principle be measured in our lifetime, or are we stuck with calculating it based on our best understanding of how heat flows between the ocean and the atmosphere?

What are the error bars in calculating the heat content of an entire ocean from the sparse, unreliable (pre-ARGO) temperature data available?

Bosse (Citizen Scientist / Public), 4.1 (± 0.43), Statistical (Same as June) Just as in the two years before I calculate the value for the September - minimum of the arctic sea ice extent of the year n (NSIDC monthly mean for September) from the Ocean Heat Content (0... 700m depth) northward 65 ° N during JJAS of the year n - 1.

Because you are fitting to look for a trend * after * selecting the data that looks flat, the real 95 % confidence interval of the trend in temperature (or ocean heat content) over any of these intervals is much larger than what you are presumably calculating.

To add CO2 to this model of oceanic indices, you must calculate the affect of IR LW heat penetration into the warming of the oceans.

The mechanism from ocean heat to atmosphere heat is known and can be calculated.

Hansen 2005, using ocean heat data, calculated the planet's energy imbalance around 2003 to be 0.85 Wm?

Among other things, there is evidence that the oceans have absorbed more heat than we initially calculated.

Also don't understand how surface temps can be used to calculate global warming or cooling when the vast majority of climate heat is stored in the oceans.

The study is the first to develop a plan to fulfill all of a state's transportation, electric power, industry, and heating and cooling energy needs with renewable energy, and to calculate the number of new devices and jobs created, amount of land and ocean areas required, and policies needed for such an infrastructure change.

* In calculating ECS in energy balance models, ocean heat uptake (dQ = 0.7 W / m2) is subtracted from the forcing change (dF)

This is in part because there are several open research questions regarding the accuracy with which ocean heat content can be calculated and applied.

Thus, the change in ocean heat storage with time can be used to calculate the net radiative imbalance of the Earth (Ellis et al., 1978; Piexoto and Oort, 1992).

When scientists add up all the heat warming the oceans, land, atmosphere and melting the ice, they calculate that our planet is accumulating heat at a rate of 2.5 x1014 Watts.

If over a long period of time that portion of the ocean accumulates heat, then the index (a statistic calculated from temperatures and pressures) running mean will change over that time span.

Ocean heat transport is calculated with the slab - ocean calibration procedure described aOcean heat transport is calculated with the slab - ocean calibration procedure described aocean calibration procedure described above.

Energy ratio: for example (because I'm not sure offhand what the best amount to use is), taking just 5 % of the ocean and the latent heat of increased H2O vapor and the heat needed to warm the air as calculated before, heating this up 3 K would take 872 ZJ (still mostly going to the ocean).

When Schwartz calculated the average ocean warming, he only included the increase in the senisible heat of the oceans, but he should also have included the increase in latent heat from the loss of sea ice.

If you have good measurements of upper ocean and atmospheric temperatures, then if you had a good decade - long satellite record of the Earth's total radiative energy balance from space — say, if Triana has been launched to in the late 1990s — then you could use conservation of energy to calculate the rate of heat uptake by the deep ocean over the past ten years.