Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 


NIWA PR Regarding NZ Climate Science Claims

Clarification of NZ Climate Science Coalition claims re NZ temperature trends

The New Zealand Climate Science Coalition yesterday issued a media release claiming that a UK-based research group has calculated a much higher temperature trend for New Zealand over the period 1979 to 2005 than shown by NIWA data. The coalition claims that the Intergovernmental Panel on Climate Change (IPCC) "believes" this higher figure, and that this alleged disagreement amongst experts shows that the science of climate change is "far from settled".

The coalition is not comparing apples with apples.

DETAILS OF THE UK DATASETS

The UK research group referred to by the coalition is the Climatic Research Unit of the University of East Anglia, Norwich, which is led by Dr Phil Jones (the "Jones et al" data).

Jones et al provide several large, complex datasets. These data are averages over squares of 5 degrees latitude by 5 degrees longitude over the globe (so there are only a handful of squares which relate to New Zealand).

There are two key datasets: 1. Land-based data only. The NIWA temperature trends are from land-based climate station measurements, so this land-based dataset is the appropriate one for comparison purposes. The trend from the Jones et al land-based data and from NIWA's land temperature data are in close agreement. The 1979–2005 trend from the NIWA data is 0.25 degrees Celsius. The trend which NIWA scientists have calculated from the Jones et al land-based data is 0.21 degrees Celsius.

2. Synthesised land-based and sea surface temperature data. This appears to be the dataset which the coalition has used, and it includes more ocean area than land area for the New Zealand grid squares. For the period the coalition has chosen (1979–2005), the ocean data shows greater warming than the land data. Using this dataset, we calculate the trend as about 0.6 degrees. This is how the coalition gets a much higher temperature trend.

The ocean temperature is affected by a combination of local conditions and transport of heat from other places. This means that we do not expect the land and ocean temperatures to show the same trends over a period of only a couple of decades.

ACCESS TO NIWA DATA

In their media release, the coalition asks the Minister responsible for climate change issues to "direct NIWA to release its (climate) station data". Warwick Hughes of the coalition already has NIWA's corrected data for each individual station in the New Zealand temperature time series, which we provided to him at no cost. For raw climate data, NIWA charges the marginal cost of supply. We also charge for a value-added service of provision of climate data via the internet. Mr Hughes has been offered access to these services subject to our standard rates, terms, and conditions.

ENDS


© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

100 Years After Einstein Prediction: Gravitational Waves Found

For the first time, scientists have observed ripples in the fabric of spacetime called gravitational waves, arriving at the earth from a cataclysmic event in the distant universe. This confirms a major prediction of Albert Einstein’s 1915 general theory of relativity and opens an unprecedented new window onto the cosmos. More>>

Farming: Alliance Plans To Start Docking Farmer Payments

Alliance Group, New Zealand's second-largest meat cooperative, plans to start withholding some stock payments to its farmers from next week to bolster its balance sheet and force suppliers to meet their share requirements. More>>

ALSO:

Gambling: SkyCity First Half Profit Rises 30%, Helped By High Rollers

SkyCity anticipates the Auckland business will benefit from government gaming concessions which were triggered on Nov. 11 in recognition of SkyCity’s $470 million Convention Centre development. Morrison said the concessions would allow the Auckland business to lift its activity during peak period, noting it had a record revenue week over the Christmas and New Year period. More>>

ALSO:

Money For Light: Kiwi Scientists Secure Preferential Access To Synchrotron

Science and Innovation Minister Steven Joyce today announced a three-year investment of $2.8 million in the Australian Synchrotron, the largest piece of scientific infrastructure in the Southern Hemisphere, to secure preferential access for Kiwi scientists. More>>

Telco Industry Report: Investment Hits $1.7 Bln A Year

Investment in the telecommunications sector is $1.7 billion a year, proportionately one of the highest levels in the OECD, according to a report released today on the status of the New Zealand sector. More>>

ALSO:

PGPs: New Programme Sets Sights On Strong Wool

A new collaboration between The New Zealand Merino Company (NZM) and the Ministry for Primary Industries (MPI), announced today, aims to deliver premiums for New Zealand's strong wool sector... More>>

ALSO:

Restrictions Lifted: No Further Tau Flies Found

The Ministry for Primary Industries (MPI) confirms that all restrictions on the movement of fruit and vegetables in Manurewa, Auckland, due to the Tau fly, have been lifted as of 2.26pm on Sunday 7 February. More>>

Crowdfinding: Awaroa Beach To Become Public Land If Appeal Succeeds

Conservation Minister Maggie Barry says a privately-owned beach will become part of the Abel Tasman National Park if an online crowdfunding campaign to buy it succeeds... More>>

ALSO:

Get More From Scoop

 
 
 
 
 
 
 
 
 
Sci-Tech
Search Scoop  
 
 
Powered by Vodafone
NZ independent news