Cooling The Past In Bolivia
By Paul Homewood
Eliza suggested I looked at some of the temperature records for Bolivia, as it shares a border with Paraguay.
One station she suggested was Santa Cruz.
As with all of the Paraguayan stations, we find that a substantial, artificial warming trend has been introduced. What is also significant is that we see the same sharp drop in temperatures in the 1970’s, which we had in Paraguay, and which the GHCN algorithm assumed could not be right.
It is also worth noting the large gap in readings beginning in the 1990’s. It is questionable how reliable any comparisons now can be with the previous data. Nevertheless, GHCN assume that the last few years must be warmer than the actual data says.
We can also check out the other Bolivian stations.
At every station, bar one, we find the same pattern as Santa Cruz. The past is cooled and the present warmed.
Also, again, we find the marked cooling in the 1970’s.
The only station to which slightly bucks the trend is La Paz, with temperatures adjusted down slightly in recent years. But even here the sharp cooling trend shown on the actual data is moderated after all adjustments. Given how much the city has expanded in the last half century, any trends here are likely to be worthless anyway.
In every case, the data in the last couple of decades is so sparse as to make any conclusions on temperature trends pretty meaningless, but none of this stops GISS from declaring that temperatures in this part of the world were a degree higher last year than the 1951-80 average.
Despite these huge holes in the temperature record, GHCN still manage to come to the conclusion that, in every case but one, temperatures measured in the last decade have been underestimated.
It seems it is not just the Paraguayans who do not know how to read thermometers.