Monthly Archives: March 2008

NASA Follows CA Recommendation

Mar 4, 2008 – 8:01 AM

On Feb 20, 2008, I wrote a post reviewing the provenance of various versions of an individual USHCN station (Lampasas), observing that a much more recent version was available at NOAA than at CDIAC) (the source used by NASA. I made the following recommendation: Regardless of whether these station histories “matter”, surely there’s no harm […]

By Stephen McIntyre | Posted in General, GISTEMP, GISTEMP Replication, Surface Record | Comments (35)

Atmoz Agrees on USHCN Adjustment Defect

Mar 2, 2008 – 2:16 PM

A theme in many recent posts has been whether the USHCN and NASA adjustments are successful in achieving their goals. On a number of occasions, we’ve observed that the USHCN station history (SHAP) adjustment appears to be an odd statistical procedure and can be objectively seen to be unsuccessful in picking up recorded station moves. […]

By Stephen McIntyre | Posted in General | Tagged | Comments (47)

Hansen and "False Local Adjustments"

Mar 1, 2008 – 4:59 PM

Over the last few days, I’ve shown that Hansen et al 1999 illustrated and discussed the effect of the NASA adjustment for two stations (Phoenix, Tokyo) where the NASA urban adjustment yielded the expected adjustment (denoted in these posts as a “positive” adjustment). In an earlier post, I’d observed that negative urban adjustments (i.e. for […]

By Stephen McIntyre | Posted in Hansen, Surface Record | Tagged , | Comments (70)

Positive and Negative Urban Adjustments

Mar 1, 2008 – 10:33 AM

A few days ago, I commented on the surprisingly large negative urban adjustments made by NASA at several Peruvian stations. I’ve now calculated the maximum negative and maximum positive urban adjustments at all NASA stations – something that I was able to do only because of my scraping of NASA data from their website (something […]

By Stephen McIntyre | Posted in Hansen | Comments (133)