Comments on: Animating GHCN Global Temperature Anomalies from NCDC

By: Jim

Jim — Mon, 20 Jul 2009 22:01:18 +0000

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?

By: JP

JP — Mon, 20 Jul 2009 11:17:08 +0000

“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.

By: David_a

David_a — Mon, 20 Jul 2009 03:41:16 +0000

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.

By: Andrew

Andrew — Sun, 19 Jul 2009 18:07:19 +0000

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

By: piezopaul

piezopaul — Sun, 19 Jul 2009 17:07:59 +0000

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.

By: MattN

MattN — Sun, 19 Jul 2009 17:05:53 +0000

Record low of 60F in Charlotte this am. Broke the 99 year long record of 61F set in 1910….

By: Squidly

Squidly — Sun, 19 Jul 2009 15:34:18 +0000

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.

By: Squidly

Squidly — Sun, 19 Jul 2009 15:29:34 +0000

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.

By: Squidly

Squidly — Sun, 19 Jul 2009 15:27:55 +0000

Meanwhile, here in Nashville, TN, we are expected to hit all-time lowest high temperature, and tonight, all-time lowest low temperature.

By: Paul Coppin

Paul Coppin — Sun, 19 Jul 2009 14:21:33 +0000

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.

By: matt v.

matt v. — Sun, 19 Jul 2009 13:59:57 +0000

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

By: roxxar

roxxar — Sun, 19 Jul 2009 13:55:05 +0000

really believe that the higher temperatures are a result of either sensors in less than ideal locations or old, failing sensors. Asian Tv Asian Entertainment News

By: matt v.

matt v. — Sun, 19 Jul 2009 13:51:58 +0000

To me the most meaningful chart is the one shown below . After 100 years of global warming we are almost exactly where we started.

http://climvis.ncdc.noaa.gov/cgi-bin/cag3/hr-display3.pl

By: Dave

Dave — Sun, 19 Jul 2009 13:42:01 +0000

We have seen that as climate datasets get revised, the adjustments tend to raise the recent temperatures and lower the older temperatures, thus raising the observed warming trend.

I wonder if as they release the new maps, they have recalculated the 1961-1990 baseline temperature as well? This would also increase the amount of red on more recent maps.

By: Erik in Cairo

Erik in Cairo — Sun, 19 Jul 2009 13:35:39 +0000

I am confused. From my vantage point, June was a rather pleasant month. June seemed below average in terms of high temeperatures, except for the beginning of the month. I have no data to back up these perceptions, but I am nonetheless skeptical about the red dots over Egypt. I am wondering out loud about this: Where might one find historical weather station data for Egypt?