How not to measure temperature, part 13

26 06 2007

Quitman_GA_USHCN.jpg

The picture above is of the official USHCN climate station of record in Quitman, GA and comes to me via www.surfacestations.org volunteer Joel McDade.

It is located at a residence, the observer has consented to having this NOAA weather equipment at his home.

Besides the usual problematic close-by parking of vehicles that we’ve seen before, and buildings less than 100 feet from the temperature sensor, we have a new issue to contend with: inoperable vehicles and abandoned appliances near the temperature sensor. Such big chunks of metal have thermal retention, which means that heat is retained past sunset and re-radiated near the sensor. This may bias overnight lows.

I thought the old washing machine was a nice touch though. It illustrates how little quality control of the temperature measuring environment is being done with the US Historical Climatological Network.

Additional pictures of the site are available at the surfacestations.org online database.





A landmark paper on earth’s climate link to the sun

26 06 2007

sun-earth-spiral.png
The diagram above is central to the paper’s examination of the “spiral” nature of the earth to sun distance relationship, which affects noit only seasons, but longer term climate cycles.

Every once in awhile some thing comes along that really “clicks” with a lot of people in the science community.

A new paper from New Zealand titled: Linkages between solar activity, climate predictability and water resource development is one of those that has “clicked” with a lot of people recently. It is the first scientific paper I’ve ever seen that pulls all the interdisciplinary fields of solar physics, astronomy, meteorology, hydrology, and climatology together to prove that in fact the sun is the major driver, even with its “small” fluctuations often ignored by climate scientists as being too small to matter.

It does matter, I’ve written about it many times, and this paper really has strong evidence supporting it. This is not just another paper talking about sunspots and the maunder minimum, no this one has some strong empirical evidence that directly links climate changes on earth to a myriad of changes in the sun-earth relationship.

What’s even better, this paper is readable. It’s not written in techno-speak with accents on using words 99% of the general population doesn’t use. It’s refreshing. Read it here (Adobe PDF)

The abstract reads: “This study is based on the numerical analysis of the properties of routinely observed
hydrometeorological data which in South Africa alone is collected at a rate of more than
half a million station days per year, with some records approaching 100 continuous years
in length. The analysis of this data demonstrates an unequivocal synchronous linkage
between these processes in South Africa and elsewhere, and solar activity. This confirms
observations and reports by others in many countries during the past 150 years.
It is also shown with a high degree of assurance that there is a synchronous linkage
between the statistically significant, 21-year periodicity in these processes and the
acceleration and deceleration of the sun as it moves through galactic space. Despite a
diligent search, no evidence could be found of trends in the data that could be attributed
to human activities.”

My hat’s off to these scientists: W J R Alexander, F Bailey, D B Bredenkamp, A van der Merwe and N Willemse