New Zealand’s “Warming” Is Based On Temperature Adjustments & Artificial Airport Heat Islands
By Paul Homewood | Not A Lot Of People Know That | January 13, 2024
Graeme Hook left this comment yesterday:
Unfortunately Wayback does not have a copy of the earlier Berkeley Earth graph; if anybody can track it down, give me a shout.
However what I have found is just as interesting.
Let’s start with the current Berkeley Earth graph for New Zealand:
https://berkeleyearth.org/temperature-region/new-zealand
Since the 1880s, temperatures have risen by about 1C, up to 2020. Most of this increase has occurred since the 1950s.
This is more or less in line with the GISS chart of adjusted temperature data for Auckland Int Airport – (ignore the 2023 spike):
https://data.giss.nasa.gov/cgi-bin/gistemp/stdata_show_v4.cgi?id=NZM00093110&ds=15&dt=1
However the unadjusted data tells a completely different story; as is often the case, GISS have cooled the past, by about half a degree. In particular, there appears to have been little increase since the 1950, prior to last year:
Far from cooling the past at Auckland, GISS should be doing the opposite.
There are, apparently, two weather stations at Auckland Int Airport. This is the location of the one that GISS quote:
https://www.ncei.noaa.gov/access/homr/#ncdcstnid=30095746&tab=LOCATIONS
It’s on top of a roof of an airport building, in the middle of the airport complex. But a closer look shows it is just yards from a number of air conditioning vents:
The other station is no better, about 20m from the tarmac:
https://www.ncei.noaa.gov/access/homr/#ncdcstnid=30151541&tab=LOCATIONS
What is absolutely certain is that the airport would have looked much different in the 1950s. It started life in 1928 as a dairy field with three Gypsy Moths.
In 1965, when the first commercial flight took off, a DC8 to Sydney, it looked like this:
Over the years, of course, the airport has been massively expanded, and now handles 16 million passengers a year, now looking like this:
The so-called New Zealand temperature record, which claims to show significant warming since the 19thC, is based on heavily adjusted data and artificial,warming at airports. It has no basis at all in reality.
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