Well, if the left wants to give talking tips for Christmas dinner, why can’t we? So, after you’re done making fun of the obnoxious fellow or gal expressing outrage that an old Christian guy from the south believes homosexuality is a sin, and if the conversation is becoming tiresome, you can always change the subject to climate and our sea levels, and make fun of the obnoxious fellow or gal all over again! (Be sure to do it in a nice, kind, gentle nature!!!)
So, Steve has an interesting post up at Real Science.
So, I thought I’d play, too!
The gauges which NOAA is playing with are long-term gauges, in that they cover on average about 71 years.
As we all know, the tidal gauges aren’t uniform in the time periods they cover, which makes for some arbitrary decisions when trying to evaluate the data. But, in this case, more my purposes, NOAA makes it pretty easy.
We want to determine if the sea level rise is accelerating or not. Steve finds that the rate of rise has been 0.9mm/yr, but, I want to know if the quickening to our impending demise has started or not!!!
Of the 241 gauges NOAA is playing with, 42 of the records end prior to the year 2000. The average length of time they cover is 59 years. NOAA is also playing with some with the last years still being current (through 2011). There are 103 of them and they average about 76 years in coverage. In other words, from 2011 going back the average start year is 1936. The average start year for the gauges which ended prior to 2000 is 1931.
Note, the locations on the bottom axis does not list all of the locations.
For tidal gauges, this is just about as good as one can hope for! Clearly, this won’t be exacting, but, we can get the average SLR for the gauges ending prior to 2000 and the ones going through 2011 and determine if the rate of rise is increasing or decreasing!
Gauges ending prior to 2000 averaged a rate of rise of 1.47 mm/yr. The ones current through 2011 is 1.14 mm/yr.
Just some to wow and impress your friends and family as you rebut the obnoxious lefty of the group.