The_Global_Warmer Posted May 23, 2013 Share Posted May 23, 2013 Link to comment Share on other sites More sharing options...
Snow_Miser Posted May 23, 2013 Share Posted May 23, 2013 There are definitely some peculiarities within the dataset that need to be explained by those whom repeatedly post the NODC OHC dataset without question. Why has the rise in the 0-2000 meter OHC only been confined to the Southern Hemisphere on the NODC dataset? Link to comment Share on other sites More sharing options...
The_Global_Warmer Posted May 23, 2013 Author Share Posted May 23, 2013 This helps explain some of the enormous SLR this past year. Which is semi good news. Considering it signals less land ice lost than before. Link to comment Share on other sites More sharing options...
AvantHiatus Posted May 23, 2013 Share Posted May 23, 2013 There are definitely some peculiarities within the dataset that need to be explained by those whom repeatedly post the NODC OHC dataset without question. Why has the rise in the 0-2000 meter OHC only been confined to the Southern Hemisphere on the NODC dataset? Interesting, well the Southern Hemisphere contains more water surface area than the Northern Hemisphere but there are probably multiple reasons for the difference. Would not be surprised if strength of high pressure systems and trade winds (especially over the pacific) coupled with the persistent polar vortex over Canada has something to do with it. Strong high pressure systems keep the ocean surface colder and I suppose the deep ocean as well. We may eventually see an acceleration trend in the Northern Hemisphere so that it becomes equally expansive. Link to comment Share on other sites More sharing options...
tacoman25 Posted May 23, 2013 Share Posted May 23, 2013 Interesting, well the Southern Hemisphere contains more water surface area than the Northern Hemisphere but there are probably multiple reasons for the difference. Would not be surprised if strength of high pressure systems and trade winds (especially over the pacific) coupled with the persistent polar vortex over Canada has something to do with it. Strong high pressure systems keep the ocean surface colder and I suppose the deep ocean as well. We may eventually see an acceleration trend in the Northern Hemisphere so that it becomes equally expansive. Could definitely be pressure patterns associated with the -PDO phase in the North Pacific. Link to comment Share on other sites More sharing options...
The_Global_Warmer Posted May 23, 2013 Author Share Posted May 23, 2013 Could definitely be pressure patterns associated with the -PDO phase in the North Pacific. since the main jump was below 700M. Maybe an event during the last period helped push warmth into the 701-2000M range. Link to comment Share on other sites More sharing options...
Snow_Miser Posted May 23, 2013 Share Posted May 23, 2013 Interesting, well the Southern Hemisphere contains more water surface area than the Northern Hemisphere but there are probably multiple reasons for the difference. Would not be surprised if strength of high pressure systems and trade winds (especially over the pacific) coupled with the persistent polar vortex over Canada has something to do with it. Strong high pressure systems keep the ocean surface colder and I suppose the deep ocean as well. We may eventually see an acceleration trend in the Northern Hemisphere so that it becomes equally expansive. It definitely puts into question if Greenhouse Gases are responsible for this change or not. They're well mixed in the atmosphere, so they should create a relatively uniform warming across the globe. Not select parts of the ocean. This is the spatial change in OHC across the NH. Note that there are several large areas of declining OHC as well as areas of increasing OHC. Also note how the spatial anomalies capture the PDO signature very nicely, which is interesting. Link to comment Share on other sites More sharing options...
AvantHiatus Posted May 23, 2013 Share Posted May 23, 2013 A good chunk of the negative OHC anomalies in the northern hemisphere correlate with the -NAO. One thing I have noticed is that OHC is very warm in the summer and very cold in the winter, in relation to average in recent years. Link to comment Share on other sites More sharing options...
The_Global_Warmer Posted May 24, 2013 Author Share Posted May 24, 2013 http://climexp.knmi.nl/data/iheat700_global.dat 12.76800 That is the three month average for 0-700m beating the 2011 record by quite a bit. seasonally its 1.0 above the 11.7 set let year. Big jump in the Indian ocean. Link to comment Share on other sites More sharing options...
A-L-E-K Posted May 24, 2013 Share Posted May 24, 2013 It definitely puts into question if Greenhouse Gases are responsible for this change or not. They're well mixed in the atmosphere, so they should create a relatively uniform warming across the globe. Not select parts of the ocean. This is the spatial change in OHC across the NH. Note that there are several large areas of declining OHC as well as areas of increasing OHC. Also note how the spatial anomalies capture the PDO signature very nicely, which is interesting. Link to comment Share on other sites More sharing options...
Snow_Miser Posted May 24, 2013 Share Posted May 24, 2013 Do you have anything meaningful to contribute to this thread? If so, please do so.Thanks. Link to comment Share on other sites More sharing options...
Jonger Posted July 16, 2013 Share Posted July 16, 2013 I guess the conversation should continue here. Have the new ARGO floats been fixed yet is my first question? Also, if they are fixed, the flat trend from raw data should start inching upward. I'll await further responses before I comment anymore. Link to comment Share on other sites More sharing options...
Snow_Miser Posted July 16, 2013 Share Posted July 16, 2013 I guess the conversation should continue here. Have the new ARGO floats been fixed yet is my first question? Also, if they are fixed, the flat trend from raw data should start inching upward. I'll await further responses before I comment anymore. Skier is more familiar with all of the OHC measurement problems than I am. Back in 2008, the Argo floats were showing a sharp cooling which was documented in a paper by Willis et al. He later found that this trend was due to instrumentation problems. I'm not sure if they have been properly adjusted yet or if problems still remain with the dataset. Certainly before 2003, deep ocean measurements were much less certain. Link to comment Share on other sites More sharing options...
Jonger Posted July 16, 2013 Share Posted July 16, 2013 Skier is more familiar with all of the OHC measurement problems than I am. Back in 2008, the Argo floats were showing a sharp cooling which was documented in a paper by Willis et al. He later found that this trend was due to instrumentation problems. I'm not sure if they have been properly adjusted yet or if problems still remain with the dataset. Certainly before 2003, deep ocean measurements were much less certain. I have spent some time today researching this..... The same raw data, shows the same plateau. I just find too many stories of raw data being manipulated into a warming trend to believe this is any different. Link to comment Share on other sites More sharing options...
Snow_Miser Posted July 16, 2013 Share Posted July 16, 2013 I have spent some time today researching this..... The same raw data, shows the same plateau. I just find too many stories of raw data being manipulated into a warming trend to believe this is any different. Should also be noted that the signal the ARGO floats are measuring is an extremely small change in temperature in recent years, thus they must be near perfect to accurately measure such small changes. Link to comment Share on other sites More sharing options...
Jonger Posted July 16, 2013 Share Posted July 16, 2013 Should also be noted that the signal the ARGO floats are measuring is an extremely small change in temperature in recent years, thus they must be near perfect to accurately measure such small changes. Check out our data source from the 1950's to today, year by year. Argo goes live in 2003 and we haven't had significant non-adjusted increases since. Link to comment Share on other sites More sharing options...
Snow_Miser Posted July 16, 2013 Share Posted July 16, 2013 Check out our data source from the 1950's to today, year by year. Argo goes live in 2003 and we haven't had significant non-adjusted increases since. That's pretty amazing how some quantify a higher sensitivity based off of past OHC changes, when you see how sparce that dataset has been early on. Link to comment Share on other sites More sharing options...
LithiaWx Posted July 16, 2013 Share Posted July 16, 2013 I have spent some time today researching this..... The same raw data, shows the same plateau. I just find too many stories of raw data being manipulated into a warming trend to believe this is any different. You need a tinfoil hat Link to comment Share on other sites More sharing options...
AvantHiatus Posted July 31, 2013 Share Posted July 31, 2013 Link to comment Share on other sites More sharing options...
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