tag:blogger.com,1999:blog-1903895177977713752.post2366411403334617397..comments2022-12-10T06:50:47.926-08:00Comments on Canadian Surface Temperatures: Southern Ontario April Heat WaveRichard Wakefieldhttp://www.blogger.com/profile/05011854125762805571noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-1903895177977713752.post-62778379738323796782010-04-08T12:57:26.523-07:002010-04-08T12:57:26.523-07:00I could except one problem. CO2 is only reliable, ...I could except one problem. CO2 is only reliable, accurately measured, since 1956. Before then measurements have a very wide range from 180 to 500ppm. So not relyable. Ice core data is even worse as the CO2 for each year is a calculation based on averages of mean readings at various depths. So the best one can do it plot for only the last 50 years. I've done that (not posted here yet) and there is little correlation.<br /><br />If I correlate with the maximum temps, it would be an inverse correlation. If I plot CO2 with the number of days above 30C, for example, I will also get a negative correlation. So what is it that CO2 would be doing if it is the forcing?<br /><br />The other problem is the convergence of the extreme temps in the year. As noted, in the not too distant future the winter and summers would be the same temps, with there after the winters warmer than the summers. CO2 going to make that physical impossible possible? This fact alone, the logic alone, shows that what is happening not MUST be part of a cycle, even if CO2 continues to rise in the next 100 years (it can't).<br /><br />As for the first frost in the fall, I have plotted some of those (southern Ontario) and winter is arriving later since the 1920's. Thus the growing season has been increasing by about 30 days. I want to confirm that with other locations across the country first.Richard Wakefieldhttps://www.blogger.com/profile/05011854125762805571noreply@blogger.comtag:blogger.com,1999:blog-1903895177977713752.post-83608331601976025662010-04-06T11:01:55.967-07:002010-04-06T11:01:55.967-07:00You write "This is just a normal cycle. No co...You write "This is just a normal cycle. No correlation with CO2 levels". Could you provide a plot of CO2 levels compared to April temperature? <br />Is autumn occurring earlier in the year as well?Unknownhttps://www.blogger.com/profile/10141822619080767914noreply@blogger.com