NOAA: "adjusting" a decline into an increase

“In the original NOAA US data base, NOAA had an adjustment for urban heat island [UHI] contamination. The combination of longer term station stability and this adjustment made that data base (1221 climate stations), the best in the world. This is what it showed in 1999.

Note even with the super El Nino of 1997/98, the trend from the 1930s/1940s was down.  Indeed James Hansen in 1999 remarked “The U.S. has warmed during the past century, but the warming hardly exceeds year-to-year variability. Indeed, in the U.S. the warmest decade was the 1930s and the warmest year was 1934.”

NOAA and NASA had to constantly explain why their global data sets were showing warming and the US, not so much. NOAA began reducing the UHI around 2000 and then in USHCN version 2 released for the US in 2007 and individual stations in 2009, the urban heat island adjustment was eliminated which resulted in an increase of 0.3F in warming trend since the 1930s.”  “WHY NOAA AND NASA PROCLAMATIONS SHOULD BE IGNORED

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


%d bloggers like this: