Update: The Global Warming Challenge

Reposted from theclimatebet.com 2018 year ends on a low note, temperature wise The UAH global mean temperature anomaly data for December 2018 is out: the figure of 0.25°C. The average for the year was 0.23°C, with a maximum anomaly of 0.32°C and a minimum of 0.15°C. None of those figure is much different from the…

Advertisements

Greenland Is Way Cool

Guest Post by Willis Eschenbach As a result of a tweet by Steve McIntyre, I was made aware of an interesting dataset. This is a look by Vinther et al. at the last ~12,000 years of temperatures on the Greenland ice cap. The dataset is available here. Figure 1 shows the full length of the data,…

Going To Zero

Guest Post by Willis Eschenbach [See update at the end] I keep reading about all kinds of crazy schemes to reduce US CO2 emissions. Now, I don’t think that CO2 is the secret knob that controls the climate. I think that the earth has a host of emergent thermoregulatory mechanisms that act to keep the…

Cooling Down The Land

Guest Post by Willis Eschenbach [UPDATE] I’ve discovered an error in the calculations that invalidates most of this post, with the exception of the snow extent data. See the explanation here.] As I mentioned in a recent post, the CERES satellite folks have released another year’s worth of data. Since this should have gotten us…

Calculating global temperature anomaly

By Nick Stokes, There is much criticism here of the estimates of global surface temperature anomaly provided by the majors – GISS, NOAA and HADCRUT. I try to answer these specifically, but also point out that the source data is readily available, and it is not too difficult to do your own calculation. I point…

California, Temperatures, and Acres Burned

Guest Post by Willis Eschenbach Inspired by the work done by Robert Rohde attempting to link May to October temperatures and rainfall to fires, I thought I’d take a look at the acres burned over the years. Rohde compared the rainfall and temperature records and highlighted the largest fires. However, this gives only a few…

Further to the UAH Lower Temperature Bound

By David Archibald [This looks more like a technical analysis of a stock than a discussion of physical processes to me.  Any time series will have a lower bound.  Selecting a few of those data points that seem to fall on a straight line and asserting that they are bounded by an undefined feedback mechanism…