tag:blogger.com,1999:blog-2220966763638300672.post1094078713385234190..comments2023-07-29T05:11:23.558-04:00Comments on Climate Observations: A Closer Look At The ERSST.v3b Southern Ocean DataBob Tisdalehttp://www.blogger.com/profile/15462377647970214137noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-2220966763638300672.post-64919844444295039802010-08-02T10:18:19.633-04:002010-08-02T10:18:19.633-04:00Hi Bob,
I don't know if your still taking comm...Hi Bob,<br />I don't know if your still taking comments on this given it was posted so long ago but here goes.<br /><br />I got here in a roundabout way from looking at The State of The Climate 2009 and wanting an image of the Southern Ocean SST. I was looking for something to compare the N. Atlantic record in the above doc. You sort of confirmed for me that the N amd S oceans seem to run with a seesaw effect in their SSTs. <br /><br />On a side note figure 5 and 6 got me thinking. You've identified an underlying 100 year ossilation in the Southern Ocean. If you subtracted that osillation from the Southern Ocean south of the Southeast Pacific anomoly (for example red - green in Fig5) and then compared the resulting data to the ENSO index (as in Fig6) it looks to me like you'd get an even better fit with the ENSO index.<br /><br />I read your post with interest, it always frustrates me that many discussions of climate seem to reduce every changing metric to one factor. It's good to see somebody looking at the fasinating natural variability. ThanksHRnoreply@blogger.comtag:blogger.com,1999:blog-2220966763638300672.post-57498086712510740192009-04-18T21:17:00.000-04:002009-04-18T21:17:00.000-04:00Alan Cheetham: The NCEP SST Reanalysis graph of th...Alan Cheetham: The NCEP SST Reanalysis graph of the 80S-65S, 80W-60W grid is interesting. After the shape of the curve, the first thing I noted was the scale. They're showing SSTs at -16 to -19 deg C, but sea water freezes at approx -1.8 deg C, so that's a problem.<br /><br />The NCEP graph also made me curious, so I plotted the annual SSTs (not anomalies) of the ERSST.v2, ERSSST.v3b, HADISST, and OI.v2 SST datasets for the 80S-65S, 80W-60W area. <br /><br />1854 to 2008 is here:<br />http://i40.tinypic.com/98rn0g.jpg<br /><br />1950 to 2008 is here: <br />http://i43.tinypic.com/2zpqmg6.jpg<br /><br />The NCEP data resembles the HADISST data after 1970, but bears no likeness before then. <br /><br />The ERSST.v3b is the latest from the NCDC and they eliminated the satellite data from it because it was influencing it in ways that users didn’t like. HADISST and OI.v2 SST both use satellite data to supplement buoy and ship data. <br /><br />Whose dataset does one believe?Bob Tisdalehttps://www.blogger.com/profile/15462377647970214137noreply@blogger.comtag:blogger.com,1999:blog-2220966763638300672.post-12629318112916429662009-04-18T19:48:00.000-04:002009-04-18T19:48:00.000-04:00Hi Bob:
No - I don't mean the plots in my art...Hi Bob:<br /><br />No - I don't mean the plots in my article compared to yours - I mean this one, (Jan -Dec covering the same area as yours): http://www.cdc.noaa.gov/cgi-bin/data/timeseries/timeseries.pl?ntype=1&var=SST&level=2000&lat1=-65&lat2=-80&lon1=-80&lon2=-60&iseas=1&mon1=0&mon2=11&iarea=0&typeout=2&Submit=Create+TimeseriesAlan Cheethamhttp://www.appinsys.com/GlobalWarming/noreply@blogger.comtag:blogger.com,1999:blog-2220966763638300672.post-78283707975884381662009-04-18T19:38:00.000-04:002009-04-18T19:38:00.000-04:00Alan Cheetham: Your graphs are of annual averages...Alan Cheetham: Your graphs are of annual averages of Jan-Feb-Mar (Summer) SSTs, while the ones I illustrated are monthly SST anomalies smoothed with a 37-month filter. They may also be two different datasets.<br /><br />Jeanette: Thanks.Bob Tisdalehttps://www.blogger.com/profile/15462377647970214137noreply@blogger.comtag:blogger.com,1999:blog-2220966763638300672.post-66960525694344661912009-04-18T18:27:00.000-04:002009-04-18T18:27:00.000-04:00Thanks for your careful research. Since I have le...Thanks for your careful research. Since I have learned so much about our oceans from reading your posts on WUWT, I check your blog a number of times a week. The charts are amazing.Unknownhttps://www.blogger.com/profile/01811175315920598010noreply@blogger.comtag:blogger.com,1999:blog-2220966763638300672.post-3698450296231200162009-04-18T18:14:00.000-04:002009-04-18T18:14:00.000-04:00I recently wrote an article about the Wilkins Ice ...I recently wrote an article about the Wilkins Ice Shelf (see: http://www.appinsys.com/GlobalWarming/AntarcticWilkinsIceShelf.htm). The last plot in your article - the plot of the Wilkins area was curious to me -- so I plotted the same area at the NOAA ESRL page and get a very different result (see: http://www.cdc.noaa.gov/cgi-bin/data/timeseries/timeseries.pl?ntype=1&var=SST&level=2000&lat1=-65&lat2=-80&lon1=-80&lon2=-60&iseas=1&mon1=0&mon2=11&iarea=0&typeout=2&Submit=Create+Timeseries)Alan Cheethamhttp://www.appinsys.com/GlobalWarming/noreply@blogger.com