The BoM is in contortions reporting the embarrassing news that Perth has had a second cool summer but the halt in warming can not be real says the ABC – so is it warming as usual? Not one word that the cool summers are in the face of the ever growing Perth urban heat island. … Continue reading BoM blind to Perth UHI reporting two cool summers for SW WA
Over a century of urban development must feed in to daily max and mins as would the late 20th Century change to AWS readings compared to to slower responding liquid in glass thermometers. Some old blogs — Satellites define the surface urban heat island (UHI) for 419 global cities 25Feb2013 The ever watchful Chris Gillham … Continue reading BoM omit UHI/etc claiming Perth hottest ever April day
Chris Gilham has posted an item from the West Australian newspaper reporting the results of aerial thermal scans over Perth by a commercial firm Scantherma. Of course this imagery can be used to prove the existence of the urban heat island (UHI) which magically never finds its way into IPCC temperature trends. It is good … Continue reading Aerial thermal scans over Perth – 16 years after this technology was used in the USA to measure urban heat island (UHI) effects
An email from Perth pointed out the plentiful mild weather lately. I see that Perth Airport 9021 is used in ACORN so I have had a look-see at all the raw monthly max data from CDO – (December data up to 16th so far). The first thing that hits me is a step-change coincident with … Continue reading Perth Airport max T history 1945-2021
We have all seen the media beat ups about the “Great Four day Perth heatwave 7th to 10th Feb 2016” – never a mention that that the ever expanding Perth urban heat island UHI might contribute to this event. Credit where credit is due though, the original BoM forecast was pretty good. Unlike their Brisbane … Continue reading Perth 4 days over 40°C heatwave nothing out of the ordinary for Perth heatwaves
Keen eyed readers warned me of this news – Warmest June temperatures for Perth Working down this station list for the Perth region – In a few days the June 2015 archive will be visible. I have the page saved offline if anybody wants it emailed. Badgingarra had 20.6 last month but in 1985 saw … Continue reading Australian BoM claim that Perth has had the warmest June ever is not true everywhere around Perth
IMHO the BoM in Perth is gung-ho when it comes to claiming any records to do with warming. So I have taken a few hours to compare this summer to March heatwaves with those from 1977/78 – in each case comparing the Perth station with, sites at Perth Airport, Pearce RAAF, York and Merredin. Taking … Continue reading BoM claims record Perth heatwaves – numbers suggest not so simple
The Murdoch press website PerthNow reports the Perth BoM pointing out that Perth has had another hot year. I also note how the BoM beats this up, “It’s an indication that Perth is warming and that is consistent with the whole of the South-West of WA and consistent with global temperatures as well,”. Is the … Continue reading Perth has a hot year – BoM totally lacking in perspective
But checking various Jan Mean Max’s across Oz shows a lot of places missed out. FAIL Adelaide no record West Terrace 33 but 34.2 in 1908 FAIL Perth coolest for a decade – Kalgoorlie had an 11 day data gap in Jan. too unimportant to repair. FAIL Leonora Aero hit 39.3 but started life in … Continue reading BoM says January was hottest month on record for Australia
The Bureau of Meteorology through the media is prone to quote the 46.4 degrees temperature recorded in central Melbourne on that day – also spruiked as all time Melbourne hot day. Although what exact relevance the temperature in the middle of the huge and growing Melbourne urban heat island (UHI) has to conditions on the … Continue reading At a time of bushfires in the news – a reminder about facts of Black Saturday 7 Feb 2009 temperatures