gridpoint

Trying to locate my gridpoint, I determined that I'm all over the map - sort of "Deadhead With Sliderule."

runnin' the film projector, scorin' the ladies 2008

For the purposes of a meaningful comparison, the NH spatial means have in this case been diagnosed in both the raw data and reconstructions from the sparse gridpoint coverage of the verification period from 1854-1901, and the dense coverage of the calibration period from 1902-1980.

More on MBH Confidence Intervals « Climate Audit 2006

MM also appear to inconsistently use standard deviations of un-detrended data, while MBH98 had normalized their EOFs by detrended gridpoint standard deviations.

Detrended in Amherst « Climate Audit 2006

Standard deviations were calculated from the linearly detrended gridpoint series, to avoid leverage by non-stationary 20th century trends.

Detrended in Amherst « Climate Audit 2006

Recently, Mann et al. stated that they used “de-trended gridpoint standard deviations” to normalize temperature data.

Detrended in Amherst « Climate Audit 2006

#66, John Cross do you mean you could not find this one: Spencer, R.W., and J.R. Christy, 1992: Precision and radiosonde validation of satellite gridpoint temperature anomalies, Part II: A tropospheric retrieval and trends during 1979-90.

New Satellite Data « Climate Audit 2006

Essentially, the calibration period finds a correlation between temperature by gridpoint? by overall? and a given proxy, no?

Famiglietti Strikes Again « Climate Audit 2006

Increasing amounts of noise have been added to the gridpoint temperatures to mimic the presence of other than temperature signals in the proxies.

Von Storch et al [2006] « Climate Audit 2006

For the reconstruction of Mann & Jones 2003, the average decadal correlation between the eight proxies used and the closest available instrumental annual mean surface temperature gridpoint record during the twentieth century is r = 0.47.

New Mann Paper « Climate Audit 2006

MM03 also appear to have estimated gridpoint standard deviations from the un-detrended surface temperature data, while MBH98 had normalized their EOFs by detrended gridpoint standard deviations.

Detrended in Amherst « Climate Audit 2006