Today I checked the temperature data from Charlottetown located in Edward Island,?Canada.
I found that GHCN V3 Unadjusted data show Prince Edward Island doesn’t have the annual temperature data at all since 2001, despite the V3 data set being updated up to July 2019, and that V4 Unadjusted data show the station doesn’t have the annual temperature data from 1982 to 2012, but has the annual temperature data from 2013 to today.
? GHCN V3 Unadjusted
? GHCN V4 Unadjusted
In addition, GHCN V4 Unadjusted data are identical with V3 Unadjusted data until 1970, except 1934. But since 1971 the two data sets don’t match.
? GHCN V3 Unadjusted
? GHCN V4 Unadjusted
It’s strange that the station has different types of unadjusted data for each version.
NASA used to claim that GHCN-Unadjusted is the raw data as reported by the weather station.
The data called “unadjusted” should be unadjusted data.
