Reader Siliggy emailed this evidence of changes quietly inserted into the BoM network – that is proving “climate change and global warming”. Is there a study comparing this Beehive to stevenson screens?
The picture source is page four at this NTC pdf.
It is the Portland Harbour site here on the observations page for Victoria.
CDO site number 090192 Portland NTC AWS with monthly max and min data from Apr 2011
Because it is both a tide gauge and an AWS it has two sets of meta data available – NTC and CDO
Portland NTC AWS 1/2 hourly data here.
Don’t quite understand your use of the word “Beehive”.
Does it refer to the type of data collection installation or are there actually bees residing inside the facility?
Cheers
Roger
Coming from a Kiwi I understand the special interest raised by the term “Beehive”.
But back to the issue – Mass produced weather stations that you can buy at Amazon for a few hundred shekels often enclose the temperature sensor in a cylindrical plastic or metal shape that looks a bit like a stack of plates upside down – see picture.
I suppose it is quite possible for bees to nest inside these things.
The pic of the NTC installation at Portland is not great resolution but one day we might get a better photo of a BoM “beehive” temperature sensor enclosure from any NTC site around the wide-brown land.
Checking the monthly data there is a thumbnail map of Australia above the Annual column and I clicked on that which opened a page with a synoptic map of the Portland district. Under the map I clicked on the link to “basic site summary” and downloaded the “Basic Climatological Station Metadata” pdf.
Page 5 started the “Station Equipment History” and I looked for a 2011 entry that might represent installing the AWS. No luck but on page 8 there is a string of entries listed as “TELVENT AWS CONFIGURATION”. This may be something to do with the AWS.
Not only does it record temperature and tide height, but from its looks it can also be used as a toilet.
“Report 4 for the Independent Peer Review of the ACORN-SAT data-set” on page 16 in table 4 mentions there being 29 of the Viasala DTR 13, 16 of the RM Young 41002, and 14 identified only as Viasala.
www.bom.gov.au/climate/data/acorn-sat/documents/ACORN-SAT_Report_No_4_WEB.pdf
A comparison study between “unknown” vs “other” may be interesting
Here is page 16 from Siliggy’s ACORN-SAT_Report_No_4_WEB.pdf linked above.
He emailed me these pictures of the
Vaisala
and Young
“Beehive Shelters” referred to by the BoM.
Graeme No.3 “it can also be used as a toilet” Well data logging could mean several things.
From the direction of the solar panel it looks like the mid morning sun would reflect well off the dunny roof at a good angle to then bounce off the upside down plate edge and on in toward the thermometer.
@siliggy
I think not. Assuming that the solar panel is orientated to the North** it would be unlikely to direct sunlight into the dunny.
On the other hand I wonder what the ventilation is like inside. Are they counting on the fibreglass box to insulate the air inside? Do they get a draft through the box?
** And if you have been following the series on BoM sites on Ken’s Kingdom then you would wonder if the BoM knows where the sun is.