You’re not wrong, Warwick

[These comments on the availability of NZ temperature records from the ever-watchful Warwick Hughes in Australia may draw useful information from someone.]

Source: Confused reporting of cold in New Zealand | Errors in IPCC climate science

The headline in The NZ Herald says New Zealand hit by record cold temperatures overnight, yet a reading of the article gives no examples of actual records, only some bone-chilling -20°C overnight lows in the South Island. Hopefully some Kiwis might have better information.

The Met Office over there and NIWA have very poor online data sources to check weather history. The Australian BoM is light-years ahead with their website.

Kiwis who are interested in weather history would be better served by the NZ weather authorities abandoning their pitiful website efforts and contracting that weather history stuff out to the BoM.

I would like to have more to contribute on this, but I don’t. Anyone else? – RT

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Richard C (NZ)AndyWazzRichard Treadgold Recent comment authors
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Wazz
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Thanks Richard – here is a url to what I refer to at the BoM www site –
http://www.bom.gov.au/climate/maps/
If you want to check past periods for actual rainfall or temperature – make a choice – select your region, timescale – a day, a week, a month, 3 months etc etc etc – move your day back in time – choose whatever parameter – actual readings or anomalies or percentages. A useful site for quickly getting a handle on how the country has been traveling weather wise.
If there is something similar for NZ – please somebody let me know.
If you just want the days weather observations or forecasts click on your State at the BoM front page and select from drop-down menu.

Richard C (NZ)
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Richard C (NZ)

I think by “record” the Herald means “near record”. TV has been quoting the actual record (see below) but the Herald are just spinning it. NIWA has a climate extremes page: New Zealand climate extremes, updated up until 31 December 2012 https://www.niwa.co.nz/education-and-training/schools/resources/climate/extreme Temperature# #Climate data were sourced from the National Climate Database, CliFlo, with all data from mainland New Zealand stations included. All temperature data from stations below 500 m AMSL were included. Lowest air temperature: North Island –13.6 Chateau Tongariro 7 July 1937 South Island –25.6 Ranfurly, Eweburn 17 July 1903* If Ranfurly, Eweburn was a site in say the Lincoln or Dunedin locations, the temperature record 17 July 1903 would change after homogenization adjustments depending on the cumulative adjustment. Using Dunedin, NIWA’s cum 7SS adj is +0.25 making the record -25.35. Using Lincoln, NIWA’s cum 7SS adj is -0.97 making the record -26.57. This of course applies to EVERY adjusted site reading on EVERY day if homogenized. NIWA’s VCSN is non-homogenized (that I can see) i.e. all the site readings retain data integrity (don’t change). If the 1903 record had occurred post 1972 when VCSN commenced, the record would still be… Read more »

Richard C (NZ)
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Richard C (NZ)

Warwick, you can get all the NZ data from NIWAs’ VCS: “Virtual climate station (VCS) data are estimates of daily rainfall, potential evapotranspiration, air and vapour pressure, maximum and minimum air temperature, soil temperature, relative humidity, solar radiation, wind speed and soil moisture on a regular (~5km) grid covering the whole of New Zealand. The estimates are produced every day, based on the spatial interpolation of actual data observations made at climate stations located around the country.” https://www.niwa.co.nz/climate/our-services/virtual-climate-stations But you will have to pay for it now: Climate-Smart Farmers “Well from 13th October 2014 we have a problem. We no longer have access to the Virtual Climate Station network that drives the weekly climate updates. NIWA, the Crown-owned agency that holds this data has decided to terminate access and deny this information to landusers, unless you pay a fee to use their NIWA FarmMet subscription service. We think we had developed, in collaboration with NIWA, a pretty useful service that helped land users make better decisions using information that was local. And we had plans for working with NIWA to further develop and expand the applications and value of this data for business… Read more »

Wazz
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Thanks Richard – the day I pay NIWA for anything??? must watch my blood pressure. The https://climate-smartfarmers.wikispaces.com/Virtual+Climate+Station+Network site did not work for me. The farmers should agitate through MP’s to breakdown the NIWA paywall. I wonder if anybody knows what NIWA earns for these pay services. FOI ? I bet NZ would be better off with all citizens having free access to basic online weather data. Another BoM site that is useful for rain over last 48 hrs. http://www.bom.gov.au/australia/flood/index.shtml?ref=hdr rain stations report as colour coded dots – you can zoom in to a State or district – see rain for current 24 hr period(ends 9am each day) – previous 24 hr period or last hour. and there are the radars – http://www.bom.gov.au/australia/radar/ The Australian Weather News site is another v useful resource Not official BoM – http://www.australianweathernews.com/recent_AWN_daydataCurrentMonth_element.html click on any district and you get all daily rain and temperatures for current month for most stations reporting. Can also go back into ancient archives. Simple – quick. AWN obviously has a BoM data feed – no idea what the deal is if any. If your taste is for monthly or daily historical rain or… Read more »

Richard C (NZ)
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Richard C (NZ)

>”The https://climate-smartfarmers.wikispaces.com/Virtual+Climate+Station+Network site did not work for me.” Does not open or their workaround process doesn’t work for you? The workaround works for me up to a point (ARC GIS map browser works) but getting the default plots from the NIWA links doesn’t. I think NIWA are forcing use of FarmMet. But VCS data is also accessible free from CliFlo. See the bottom of the Smart-Farmers page: STEPS FOR EXTRACTING Virtual Climate Station DATA 1. Go to http://cliflo.niwa.co.nz 2. If you do not have a registered cliflo username and password, click on ‘subscribe on-line’ (there is no cost) 3. Login 4. On the database query form, click on ‘select datatype’ then ‘special datasets’ then ‘VCSN’ 5. On the database query form, type in the agent number of this VCS point 6. On the database query form, choose a date range (VCS rainfall data begin on 1/1/1960; VCS wind data begin on 1/1/1997; other VCS data variables begin on 1/1/1972. The data are updated every day at approximately 1pm local time for the 24-hour period up to 9am local time on the same day) 7. On the database query form, choose an output data… Read more »

Richard C (NZ)
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Richard C (NZ)

>”I think by “record” the Herald means “near record”. TV has been quoting the actual record (see below) but the Herald are just spinning it.”

The Herald is saying the same as TV on this page:

http://m.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=11469596

• -20 degrees recorded at Pukaki, close to the country’s coldest ever recorded of -25.6 in Ranfurly in 1903

“New Zealand has nearly shuddered itself to the MetService’s record books after Mackenzie Country plummeted to -20 degrees overnight.”

# # #

Yes, “nearly” shuddered itself, but 5.6 short.

Andy
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Andy

Apparently it got a bit colder (-22?) and the rest of the Mackenzie was around the -15–20 mark

I’m glad we’ve opted for hot water underfloor heating in our new house being built down there!

Richard C (NZ)
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Richard C (NZ)

I wonder how the temperature was measured i.e. were these off-the-shelf weather stations or standard Stevenson’s Screens? There’s weather stations at many farms and backyards now but not standard.

NIWA’a VCS gathers data from well over 11,000 weather stations around NZ, many (most?) of which are not standard. This is a massive data gathering exercise, I doubt there’s anything like it in Australia on this scale.

But cold is cold irrespective of where the thermometer is. Good call with underfloor heating Andy.

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