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sci.geo.meteorology (Meteorology) (sci.geo.meteorology) For the discussion of meteorology and related topics. |
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#1
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MONZO REALYY TELLS A WHOPPING LIE HERE!
HE TELLS YOU ONLY ABOUT A MERE 6 YEARS OF DATA, AND HE ACTUALLY EXPECTS YOU TO BELIEVE HE KNOWS SOMETHING. HERE IS THE WHOLE TRUTH, THE TRUTH WHICH SAYS, "THE OCEANS ARE WARMING!" Here, from Hadley Centre, are the global sea surface temperatures from 1850 to 2008. Please see: http://www.cru.uea.ac.uk/cru/data/temperature/ http://www.cru.uea.ac.uk/cru/data/te.../hadsst2gl.txt The yearly means of these data are graphed he http://members.cox.net/rcoppock/HadSST2gl.jpg On Mar 21, 8:16*pm, "oobzn" wrote: March 21 2009 THERE are 3,000 free-drifting buoys in the world's ocean; first deployed in the year 2000 they allow continuous monitoring of the temperature, salinity, and velocity of the upper ocean. There has though been some difficulty in interpreting the data from these buoys. Initial signs of cooling were dismissed as due to technical errors subsequently corrected based on a small sample of the 3,000 buoys known as profiling floats. Craig Loehle has analysed the data from only the profiling floats for ocean heat content from 2003 to 2008. In a paper recently published in the journal Energy and Environment he has concluded that there has been ocean cooling over this period. This graphic is from figure 1 of the technical paper and shows the decline in ocean heat content (x1022J) smoothed with a 1-2-1 filter. Dr Loehle's findings are consistent with satellite and surface instrumental records that do not showing a warming trend over recent years. http://jennifermarohasy.com/blog/ Warmest Regards Bonzo |
#2
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On Mar 21, 10:37*pm, "oobzn" wrote:
"Roger Coppock" wrote in message ... HE TELLS YOU ONLY ABOUT A MERE 6 YEARS OF DATA, AND HE ACTUALLY EXPECTS YOU TO BELIEVE HE KNOWS SOMETHING. *HERE IS THE WHOLE TRUTH, THE TRUTH WHICH SAYS, "THE OCEANS ARE WARMING!" ************************************************** *** Yes, but not for the last six years, which is significant! No Bonzo, only 6 years of data are not enough to determine a climate trend. You need an introductory statistics course. Please see: http://www.metoffice.gov.uk/corporat...20080923c.html Here, from Hadley Centre, are the global sea surface temperatures from 1850 to 2008. *Please see: http://www.cru.uea.ac.uk/cru/data/temperature/ http://www.cru.uea.ac.uk/cru/data/te.../hadsst2gl.txt The yearly means of these data are graphed he http://members.cox.net/rcoppock/HadSST2gl.jpg On Mar 21, 8:16 pm, "oobzn" wrote: March 21 2009 THERE are 3,000 free-drifting buoys in the world's ocean; first deployed in the year 2000 they allow continuous monitoring of the temperature, salinity, and velocity of the upper ocean. There has though been some difficulty in interpreting the data from these buoys. Initial signs of cooling were dismissed as due to technical errors subsequently corrected based on a small sample of the 3,000 buoys known as profiling floats. Craig Loehle has analysed the data from only the profiling floats for ocean heat content from 2003 to 2008. |
#3
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A lot has been made of a paper (Lyman et al, 2006) that appeared last year
that claimed that the oceans had, contrary to expectation, cooled over the period 2003-2005. At the time, we (correctly) pointed out that this result was going to be hard to reconcile with continued increases in sea level rise (driven in large part by thermal expansion effects), and that there may still be issues with way that the new ARGO floats were being incorporated into the ocean measurement network. Now it seems as if there is a problem in the data and in the latest analysis, the cooling has disappeared. Ocean heat content changes are potentially a great way to evaluate climate model results that suggest that the planet is currently significantly out of equilibrium (i.e. it is absorbing more energy than it is emitting). However, the ocean is a very big place and the historical measurement networks are plagued with sampling issues in space and time. Large scale, long term compilations globally (such as by Levitus et al, 2001; Willis et al, 2004) and regionally (i.e. North Atlantic) have indicated that the oceans have warmed in recent decades at pretty much the rate the models expected. Since 2000, though, ARGO - which is a network of floats that move up and down in the ocean and follow the currents - has offered the potential to dramatically increase the sampling density in the ocean and provide, pretty much for the first time, continuous, well spaced data from the least visited, but important parts of the world (such as the Southern Oceans). Data on ocean heat content from these floats had been therefore eagerly anticipated. Initial ARGO measurements were incorporated into the Willis et al, 2004 analysis, but as the ARGO data started to dominate the data sources from around 2003, Lyman et al reported that the ocean seemed to be cooling. These were only short term changes, and while few would confuse one or two anomalous years with a long term trend, they were a little surprising, even if they didn't change the long term picture very much. The news this week though is that all of that 'cooling' was actually due to combination of a faulty pressure reading on a subset of the floats and a switch between differently-biased observing systems (Update: slight change in wording to better reflect the paper). The pressure error meant that the temperatures were being associated with a point higher in the ocean column than they should have been, and this (given that the ocean cools with depth) introduced a spurious cooling trend when compared to earlier data. This error may be fixable in some cases, but for the time being the suspect data has simply been removed from the analysis. The new results don't show any cooling at all. Are we done then? Unfortunately no. Because of the paucity of measurements, assessments of ocean heat content need to use a wide variety of sensors, each with their own quirks and problems. Combined with switches in data sources over the years, there is a significant potential for non-climatic trends to creep in. In particular, the eXpendable BathyThermographs (XBTs - sensors that are essentially just thrown off the side of the ship) have a known problem in that they didn't fall as quickly as they were originally assumed to. This gives a warm bias (see this summary from Ingleby and Palmer or the paper by Gouretski and Koltermann) , particularly in data from the 1970s before corrections were fully implemented. We are still going to have to wait for the 'definitive' ocean heat content numbers, however, it is important to note that all analyses give long term increases in ocean heat content - particularly in the 1990s - whether they include the good ARGO data or exclude the XBTs or not). From realclimate more he http://www.realclimate.org/index.php...-not/#more-436 |
#4
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![]() "Roger Coppock" wrote in message ... On Mar 21, 10:37 pm, "oobzn" wrote: "Roger Coppock" wrote in message ... HE TELLS YOU ONLY ABOUT A MERE 6 YEARS OF DATA, AND HE ACTUALLY EXPECTS YOU TO BELIEVE HE KNOWS SOMETHING. HERE IS THE WHOLE TRUTH, THE TRUTH WHICH SAYS, "THE OCEANS ARE WARMING!" ************************************************** *** Yes, but not for the last six years, which is significant! No Bonzo, only 6 years of data are not enough to determine a climate trend. You need an introductory statistics course. Please see: ========================================== He said significant. Not a trend. |
#5
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On Mon, 23 Mar 2009 22:37:04 -0500, the following appeared
in sci.skeptic, posted by "James" : "Roger Coppock" wrote in message ... On Mar 21, 10:37 pm, "oobzn" wrote: "Roger Coppock" wrote in message ... HE TELLS YOU ONLY ABOUT A MERE 6 YEARS OF DATA, AND HE ACTUALLY EXPECTS YOU TO BELIEVE HE KNOWS SOMETHING. HERE IS THE WHOLE TRUTH, THE TRUTH WHICH SAYS, "THE OCEANS ARE WARMING!" ************************************************** *** Yes, but not for the last six years, which is significant! No Bonzo, only 6 years of data are not enough to determine a climate trend. You need an introductory statistics course. Please see: ========================================== He said significant. Not a trend. Correct data is usually significant to some extent. Unfortunately, Bonzo is scientifically and mathematically illiterate (like most of those who cherry-pick data), and thinks "significant to some extent" equals "meaningful overall". -- Bob C. "Evidence confirming an observation is evidence that the observation is wrong." - McNameless |
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