2008 Update on Antarctic Temperatures – RSS
Posted by The Diatribe Guy on November 30, 2008
- Anomaly value = -0.696, in degrees Celsius
- Of 358 total anomalies in the data, it ranks 344th (I’ll bet you’ve all heard about that, right? What? You haven’t? I’m shocked!)
- Of 30 October anomalies, it ranks 30th. Yes, that is correct. It was the coldest month since at least 1979, when the satellite data started.
- October’s anomaly is 0.472 degrees cooler than October 2007 and 0.794 degrees cooler than September 2008
Averages and trends
- 12-month average anomaly is -0.079, which is low, but there have been lower stretches (including earlier this year)
- The slope since inception (January 1979) is -0.0000352 degrees Celsius per month, which corresponds to a cooling per Century of 0.04 degrees
- We can fit a positive trend line going back to a starting point in most periods from a starting point of April 1981 to January 2000. The longest term trend lines are negative and the shorter trend lines are negative.
- There is no significant recent streaks of consecutive cooling or warming stretches over previous year.
- Last 60-month slope = -0.1590, the lowest slope since the period ending April 2007
- Last 120-month slope = 0.1413. This is the lowest 120-month slope since the period ending July 2006.
- Last 180-month slope = 0.0841, the lowest such slope since the period ending February 2007.
- Last 240-month slope = 0.0286, which drops the value to its lowest point since the period ending September 2005.
- Last 300-month slope = 0.0210, which is still bouncing around the same area it has since last December.
NOTE ON THE RSS DATA:One thing that you can see by following the data source link is the particular region of the globe being measured in terms of latitude. It should be noted that the RSS data extends only to -70 degrees latitude, and that the “Antarctic” region referred to above does not extend all the way to the pole. While this is an obvious limitation in the data, it still does not negate the accuracy of the region being measured (-60 to -70). If someone knows a source that isolates the polar regions, I’d be happy to take a look at those as well.