Occasional Thoughts on Climate Change

[chubbs]

21 hours ago, ChescoWx said:

Funny how Charlie picks his starting point as 1970...I wonder why?? Oh wait I see it below - he starts with one of our coldest decades...cyclical climate change FTW!! 

Nope, I was just matching the years when you claimed the Philadelphia Airport was having a big heat island effect. I am happy to go further back. I extended my chart back to 1941, the origin of temperature data collection at the Philadelphia airport. The Philadelphia airport matches Coatesville fairly well until the big Coatesville station moves in 1946 and 1947, whose effect is clearly seen.  Before the station moves, the Coatesville station was located in a built up section of the City of Coatesville. Roughly as warm as the Philadelphia Airport. Not representative of Chester County. The big heat island effect on this chart is in Chester County not Philadelphia. The reverse heat island due to the Coatesville station move to a more rural location. 

The West Chester station experienced a similar move to a cooler, less built-up, location in 1970. The 1970s are cool in your chart because of faulty analysis. If you correct for the station moves and other network siting changes over the years, like NOAA does, the 1970s don't stand out as a cool decade.

Funny that you complain about heat island effects in Philadelphia but ignore them in Chester County.

 

[ChescoWx]

2 hours ago, chubbs said:

 

For a actual view of the real data see the below....can you see the UHI problem clearer now Charlie?