With the recent announcement from NCDC that June 2009 – second warmest on record globally I thought it might be interesting to go back and look at some of the older NCDC announcements.
Many commenters have questioned how NCDC arrives at some of the temperature anomalies on this NCDC graph:
Here is what NCDC says in their official announcement.
As an aid to investigation and understanding, I have compiled all such NCDC global temperature anomaly maps that I could find and made them into a flipbook animation. NCDC only made this map style back to May 2007, and I’ve captured every month up to June 2009.
You’ll be able to watch it after clicking through, please be patient, it is a 1.4 MB file and will take bit to load.
For those that like a slower animation, click the image and a larger one at the original resolution (not scaled for blog width) will pop up with 4 seconds between frames.
I’m beginning to think that tracking anomalies may not be providing a complete picture.
really believe that the higher temperatures are a result of either sensors in less than ideal locations or old, failing sensors.
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It looks like the e-mail link from the previous post did not reference properly.The following will guide you do the nearest source . I looked at the ANNUAL CONTIGUOUS US LINE CHART
http://lwf.ncdc.noaa.gov/oa/climate/research/cag3/na.html
The more the information on global temperatures unfolds, the more I’m convinced its just gibberish. The sometime scientist in me sees so many uncontrolled variables, uncalibrated technologies, malfeasance, incompetence and obscure “measured” variation at such low levels, that notwithstanding the excellence work by Steve Mc et al, no amount of number crunching can dress up this pig.
This graphic is without meaning or even intelligent interpretation, based as it is on so many scientific fairy tales.
Meanwhile, here in Nashville, TN, we are expected to hit all-time lowest high temperature, and tonight, all-time lowest low temperature.
Issued by The National Weather Service
Nashville, TN
6:12 am CDT, Sun., Jul. 19, 2009
… UNSEASONABLY COOL TEMPERATURES TODAY AND TONIGHT…
CANADIAN HIGH PRESSURE WILL CONTINUE TO CONTROL THE WEATHER ACROSS MIDDLE TENNESSEE TODAY AND TONIGHT. CLOUDS WILL FORM TODAY AND KEEP TEMPERATURES IN CHECK. THE RECORD LOW HIGH TEMPERATURE AT THE NASHVILLE INTERNATIONAL AIRPORT TODAY IS 79 DEGREES SET IN 1897. A NEW RECORD WILL BE SET TODAY.
THE RECORD LOW TEMPERATURE TONIGHT IN NASHVILLE IS 59 AND IN CROSSVILLE IS 57… SET IN 1947 AND 1970 RESPECTIVELY. NEW RECORD LOWS ARE EXPECTED.
Just think, perhaps if they weren’t measuring these temperatures in the middle of an airport surrounded by asphalt and airplanes, it would likely be recorded a degree or more lower. My house, approximately 10mi. away from the airport, is typically 4F-6F cooler, you know, where people really live. If we all lived on runway zero-zero-niner, then perhaps this wouldn’t be an issue.
Record low of 60F in Charlotte this am. Broke the 99 year long record of 61F set in 1910….
Living in the southestern US and enjoying one of the coolest summers in a decade, I’m at a loss to explain the medium sized red dot sitting over my house. Garbage in…garbage out.
My buddies and I were golfing yesterday and being the prima donna golfers that we are, we were complaining about the conditions… -which is par for the course (pun extremely intended) except that we were complaining about it being chilly and it’s (the odd part is coming) THE MIDDLE OF JULY. 😉
Andrew
Temperature of the Atlantic ocean off the new jersey shore ( long beach island) was a balmy 61f today. Kids lips turning blue. That map is complete nonsense.
Maybe someone can get the nytimes to publish it and make a big deal of record high temps. This more than anything will kill the climate bill. People are willing to listen to scientific Pontifications that they do not understand but trust the deliverer of the news but if u put up a chart with a big red blob over the beach they couldn’t swim in because it was too friggin cold they are going to wake up and smell the capacino.
“If the average value is taken from all the available data, and the anomaly plotted in red and blue dots, then there should be as many red dots as blue dots and the plot(s) would be neutral.”
The key here is the 1961-1990 average baseline. The 1960s was the coldest decades of the 20th Century, and there the recent warming did not begin until after 1976 -some say it didn’t begin until after the 1983 El Nino event. In that case, NOAA can show significant warming because most months will warmer than one of the coldest periods of the 20th Century.
The other thing to consider is the TOB adjustment, which coincidentally warms the 1990s, but cools the 1930s. Now NOAA can argue that almost all of the 20th Century warming has occured within the last 16 years, with 4 of the 5 warmest years occuring since 1998.
Finally, as Anthony has constantly pointed out, the NOAA reporting stations in its data sets are comprised of 50% from North America (which make up only 8% of the total landmass), and of those reporting stations the majority are located at areodromes (plenty of concrete). Nearly 75% of the world’s reporting stations have gone offline since 1960. So, in effect the real global average temp that NOAA derives (and from which NASA gets its data) is nothing more than a reflection of the UHI trend of North America.
Wade (05:25:10) : “So the question is, how many of these sensors are reporting faulty data? ”
The other question is: How many of the dots that have no sensors are reporting valid data?