A WMO resolution requires release of some climatic data in the form of CLIMAT data messages. For the UK there are 20 stations, few given the land area. Most are from aerodromes, all are synoptic stations which have already been briefly covered as part of the surfacestation project.
I’ve obtained and decoded the raw data into .csv files intended for spreadsheet import.
[update 9th Oct. I've now found what looks like the formal WMO CLIMATE document
Runs from at earliest 1996, to date. Is fundamentally monthly.
A first for the Talkshop, in a zip here.
Not everything is decoded but if anything useful is omitted, discuss. Eg. no wind data, monthly is of limited use. Decoded via a script which I had to write, pretty much automatic now.
I’ve included latitude and longitude complete with ready to use Bing and Google links for a web browser. (whether a spreadsheet will allow this, ah, could copy it)
Possibily of particular interest is inclusion of month min and max figures with date, unless it is tie, in which case the date is for the first instance.
I’ve barely looked at the data myself
One I have examined is Manston, Kent about which a part 2 post is mostly prepared. (have lots not published).
This station moved from human read min/max in 2000, apparently no bridging to AWS but a bit of mystery exists, may have been as many as four different sites until the present one.
There isn’t enough data to be clear on change min/max to AWS, at least I prefer obvious effects, not statistic, but it looks likely there is 4C under some conditions, I assume because the old site was poor. Got the location.
Very interestingly the hottest day was 10th August 2003, an infamous case of many records… but herein starts a tale.
Brogdale, also in Kent, 33km away is accepted as 3.9C hotter than Manston. I don’t buy this as sensible for competent sites. I still have reservations about Manston (eg. palleted instruments, a log fence, quite close to a massively wide runway) but it is reasonable.
I note the Met Office compare Brogdale with a wide area of stations but omit Manston, the only climatic station in the region. When I went down their list, oh dear, cherry picking poor sites. (might show some of the incidentals eventually)
As it happens I’ve spotted a new problem at Brogdale, perhaps Tim’s equivalent of the Anthony Watts “air conditioners are attracted to thermometers”, something else. You’ll have to wait.