Accuracy of NIWA Data for the NZ Temperature Record

NIWA should have a formal internationally accepted NZ Temperature record with has known standards and model which is peer reviewed and tested with independent international analysis. The research should follow best practice and academic protocols so the results can be trusted. They should be open to discussion and challenge from the public and transparent about their decision making.

Government policy should not be based on doubtful climate data which can’t be validated.

Currently there is no transparency in the way NIWA calculates the de facto NZ Temperature Record. While NIWA contends there is no official temperature record, they collect data through the 7 Station Series (7SS). These data are used to underpin government policy on climate change as this is deemed the baseline from which any deviation is a rise or fall of temperature in New Zealand. NIWA data are not peer reviewed and cannot be replicated as is standard scientific practice. Other scientists have run the same raw data and found a significantly different temperature trend over the past 100 years. (De Freitas, Dedekind & Brill, in 2015 analysed the same data using the correction methods NIWA claim they use, only +0.28 degrees in the last 100 years in comparison with NIWA’s estimate of +0.91 degrees).

Such a wide discrepancy between modest and beneficial warming and verging on detrimental effects should be resolved in an open and cooperative manner.

NIWA will not discuss, meet or indulge in any challenge to their data outside of government even with technical, experts from the private sector.. There is no standard for the de facto NZ Temperature Record, there is no public engagement and there is no transparency for  the  data which underpin significant environmental policy decisions.


Why the contribution is important

The NZ temperature record is the basis from which government departments assess projections re temperature rise and or other criteria in the future.  We need to be able to implicitly trust the validity of government data and research and should follow well accepted scientific conventions. Research which is the basis of policy and decision making implicating billions of dollars implications for the economy and the balance sheet, should be sound, transparent and able to stand rigorous testing and independent peer review. Scientists outside of NIWA have no rights to be heard or to have their alternate view considered which is against the principles of open government. Government data should be transparent and government agencies should engage with the public.


by Arthur on May 31, 2018 at 09:51AM

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