Response to NIWA comment on de Freitas reanalysis of the NZ temperature record

• Guest post •

— by Barry Brill, Chairman of the New Zealand Climate Science Coalition

This note offers brief replies to specific aspects of a Comment by NIWA scientists (called hereafter “NIWA Comment”), published in Environmental Modeling & Assessment in April, 2018, concerning A Reanalysis of Long-Term Surface Air Temperature Trends in New Zealand (by de Freitas et al., 2015) (“de Freitas”).

  1. Abstract

Since there was a systematic tendency for the seven-station sites to be relocated to colder locations as the early half of the twentieth century progressed, [de Freitas’s alleged] rejection of valid adjustments produces an artificially low rate of warming.


The NIWA Comment is mistaken. Continue Reading →

Climate bombshell — NZ has not warmed for 19 years

The data say one thing

[CORRECTION 1 Nov 2017 1945 NZDT: The original post used annual data. Figures for the standard error at 19 and 20 years have been removed until I can redo them using monthly data. The trends are unaffected. RT]

[CORRECTION 2 Nov 2017 1605 NZDT: There have been numerous changes to align this post with a Coalition submission to the Royal Society. There are minor changes, references to error margins and to the 20-year chart have been binned and the title changed to “… not warmed for 19 years”. RT]

For the national temperature record, the 7SS, NIWA have collected the data, checked it, adjusted it, approved it and published it on their website, so they can scarcely now argue with it. But, on the other hand, it’s totally at odds with what they say in public. Note to MSM: this ought to be front-page news.

NIWA say another

Continue Reading →

NZ climate policies grind uselessly on

Simon asked in comments:

What fundamental central and local government policy decisions have been based exclusively on the 7SS?

The question is too restrictive. Possibly the only “exclusive” policy was the decision to spend $70,000 reconstructing the national temperature record using the wrong method and then ignoring public-spirited citizens who found serious faults in it. Continue Reading →