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Post by Deleted on Jan 18, 2021 7:43:19 GMT -5
London 2018-2020  |
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Post by Ariete on Jan 18, 2021 12:41:16 GMT -5
3-year climate weatherboxes are some real Tij Seal of Approval stuff! 
I did mine for the Rajakari lighthouse, for maximal effort of boteving:
To get some actual information from this, I'll compare Rajakari with Artukainen April-May and September-October. Artukainen's values are;
April: 10.6C/0.8C May: 17.2C/5.7C
September: 16.9C/9.2C October: 10.1C/4.1C
As soil warms up faster than water, it's no surprise Artukainen has warmer highs in April and May. However, the lows are probably cooler at A because of the windier geography on Rajakari. Those clear frosty nights simply doesn't seem to occur as often on R, bringing average lows up.
September highs drop quite fast from August for a station in the sea, but still less than Artukainen, which has a average high of 22.4C in August. The relatively weak sun and increasing winds in Sept and Oct are probably to blame that Rajakari simply cannot keep those daytime highs up, though the warm sea massively helps with the lows.
Generally, the May and July record highs are all-time records, and I think both are quite respectable for a lighthouse station at 60N. August's record high is 29.8C, so real heat in that month has avoided R during these 3 last years. September's lowest low is on the low spectrum of the station's average, but this occurred on the same day when Artukainen recorded its station record low of -1.3C, so still quite a big difference here.
Rajakari has never recorded precipitation, so there I can make no comparisons.
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Post by Deleted on Jan 18, 2021 17:27:00 GMT -5
A few more 3-year normals from London. 1995-1997: dry and cool but with warm, sunny summers  2003-2005: sunnier and drier than average with near normal temperatures  2009-2011: very cloudy, cold winters and poor summers with warm shoulder seasons  |
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Post by srfoskey on Jan 18, 2021 21:26:42 GMT -5
I made a mistake in the Raleigh averages (I originally made it for 1887-1916 and forgot to change the lows). Here's the corrected version.  |
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Post by Babu on Jan 19, 2021 4:05:23 GMT -5
Uppsala A 2018-2020  Oslo Blindern 2018-2020  Two Csb/Dsb, and in Uppsala's case even moderately sunny, comparable to NE USA with a 10% sunshine reduction (About the same sunshine as Windsor, Canada 1981-2010) Oslo has a consistently lower diurnal range due in part to its station being located on the very top of a hill, 70m higher up, and in part because Oslo obviously has a greater UHI (both are using university stations at a similar relative distance from the city center). Oslo is also consistently much wetter, as well as cloudier except for Nov-Jan. In Uppsala's case, July and May were average compared to 2002-2018 as they were both record warm in 2018 but way below average in 2019 and 2020 (but May was firmly above the 1991-2020 normal). March was also average compared to 1991-2020 because 2018 was very cold, and 2019 and 2020 only a little above average. Other months are significantly above average. The two stations' placements:, |
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Post by Babu on Jan 19, 2021 5:34:43 GMT -5
Here's Lund for 2018-2020. Not quite as sunny compared to normal as Uppsala has been (Uppsala has been consistently sunnier than even Stockholm in the last three years despite being 123h cloudier during 1961-1990). Compared to 1991-2020 only March has been average for Lund (although September has been average compared to 2002-2018). April, June and August have been significantly above average for every single year, especially June. I wish they hadn't moved the Lund station to a non-UHI placement in 1999. I'd love to see an actual UHI station in southernmost Sweden.  I also took a look at the sunniest stations in Sweden. Hoburg has managed to average an astonishing 2353h. To put that into perspective, Naples on the mediterranean coast in Italy averaged just 23h more sunshine in 1961-1990. Hoburg held the national record of 2343h since 2015. Then, starting in 2018, for three consecutive years they recorded 2365, 2342 and 2351h, (being 1h shy of) breaking the old station (and national) record for three consecutive years in a row. The last decade has been ridiculously sunny in general in the baltic sea. Interesting is that Svenska Högarna, which tends to be consistently the sunniest station, has "only" managed to average 2337h. |
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Post by Babu on Jan 19, 2021 9:19:18 GMT -5
Here's the sunniest 3 year period ever in Sweden (and probably the nordics) That 27.3'C temperature in May is actually very impressive considering how maritime the station is (located on a thin peninsula on Gotland island in the Baltic sea). Because only 41% of the precipitation fell in Apr-Sep, it's Csb and not Bsk. There were a few stations that did record Bsk years in 2018 though, like Såtenäs which got 238mm of precipitation with a mean of 8.3'C.  |
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Post by Ariete on Jan 19, 2021 11:05:44 GMT -5
Utö seems to have managed on average 2203 hours of sunshine during 2018-2020, so Hoburg certainly defeated that. But we cannot possibly know if this was the sunniest 3 years ever.
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Post by Babu on Jan 19, 2021 12:10:55 GMT -5
Utö seems to have managed on average 2203 hours of sunshine during 2018-2020, so Hoburg certainly defeated that. But we cannot possibly know if this was the sunniest 3 years ever. What's the national annual record in Finland, and from which year? |
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Post by Ariete on Jan 19, 2021 12:34:28 GMT -5
What's the national annual record in Finland, and from which year?
I have no idea. FMI doesn't tell.
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Post by Babu on Jan 19, 2021 12:57:48 GMT -5
What's the national annual record in Finland, and from which year?
I have no idea. FMI doesn't tell.
Did you get the sunshine data from their open data download service? Because if you choose hourly sunshine values, it doesn't show the minutes of sunshine for each hour, it shows the amount of seconds the sun shone per minute, in one hour increments. I.e. how many seconds of sunshine there was between 16.00 and 16.01, 17.00 and 17.01, 18.00 and 18.01 etc. And while you can download sunshine data with 1 minute intervals, so you actually get the full sunshine duration, you can't download more than about 4 months of data at the time because their servers can't handle that amount of data. I like how people like to hate on SMHI for being sparse with the data they give out, or being incompetent in general, but FMI really takes it to another level, at least in certain areas. It's impossible to download any sort of sunshine data spanning more than a couple months, and they don't even reveal sunshine data in monthly or annual reports, nor records. Talk about idiocy. |
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Post by Ariete on Jan 19, 2021 13:35:27 GMT -5
Did you get the sunshine data from their open data download service? Because if you choose hourly sunshine values, it doesn't show the minutes of sunshine for each hour, it shows the amount of seconds the sun shone per minute, in one hour increments. I.e. how many seconds of sunshine there was between 16.00 and 16.01, 17.00 and 17.01, 18.00 and 18.01 etc. And while you can download sunshine data with 1 minute intervals, so you actually get the full sunshine duration, you can't download more than about 4 months of data at the time because their servers can't handle that amount of data. I like how people like to hate on SMHI for being sparse with the data they give out, or being incompetent in general, but FMI really takes it to another level, at least in certain areas. It's impossible to download any sort of sunshine data spanning more than a couple months, and they don't even reveal sunshine data in monthly or annual reports, nor records. Talk about idiocy.
Yes, I get them for the summaries. But first I would have to know which year was on average the sunniest, and then get the values from Utö that year.
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Post by Babu on Jan 19, 2021 13:44:47 GMT -5
Did you get the sunshine data from their open data download service? Because if you choose hourly sunshine values, it doesn't show the minutes of sunshine for each hour, it shows the amount of seconds the sun shone per minute, in one hour increments. I.e. how many seconds of sunshine there was between 16.00 and 16.01, 17.00 and 17.01, 18.00 and 18.01 etc. And while you can download sunshine data with 1 minute intervals, so you actually get the full sunshine duration, you can't download more than about 4 months of data at the time because their servers can't handle that amount of data. I like how people like to hate on SMHI for being sparse with the data they give out, or being incompetent in general, but FMI really takes it to another level, at least in certain areas. It's impossible to download any sort of sunshine data spanning more than a couple months, and they don't even reveal sunshine data in monthly or annual reports, nor records. Talk about idiocy.
Yes, I get them for the summaries. But first I would have to know which year was on average the sunniest, and then get the values from Utö that year.
I looked at their 2018 annual summary on Finnish FMI with google translate, and sunshine wasn't mentioned |
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Post by Crunch41 on Jan 22, 2021 22:03:09 GMT -5
Here's the past 15 years in Madison. IDK where to find historical rainfall totals. 
For the rest of the country I use this map instead of trying to remember all the 3-letter names. sercc.com/nowdatamap
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Post by MET on Jan 29, 2021 11:18:48 GMT -5
I just had to do this again because it's funny, Sheffield according to a relative:  Interesting how people I've asked to guess the temps here think summer is somewhat warmer than it really is. |
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Post by MET on Jan 30, 2021 12:41:57 GMT -5
I wondered how much I could improve the climate of Sheffield while keeping the Mean temperature, Annual rainfall and Annual sunshine hours exactly the same. This was the result:  I had to make January and December much colder to allow summers to become warmer, and take hours off their sun to add into spring/summer. It warms up quickly in February as I hate winter seasonal lag. January/December are laughably cloudy but they're already dull enough anyway so it wouldn't make much difference. Summers are warmer than London's. Winters would certainly get more snow even with the lower precipitation values. 90% of the summer rain comes in thunderstorms so it's not a "wet" summer.
Real values for comparison, note the mean annual temp, rain and sun are the same.
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Post by MET on Jan 30, 2021 13:10:04 GMT -5
Not posted these before, they are Sheffield's 2019 and 2018. 2018 had the "Beast from the East" in late February/early March; then a very dull April. There was a very sunny, warm and dry July that year.  2019 was a very wet year with a record wet November. However it also had the February record maximum temperature, and then the July record maximum temperature.  |
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Post by Crunch41 on Jan 30, 2021 23:42:13 GMT -5
I fixed this one. I wonder if Environment Canada will release 1991-2020 normals so I can check my numbers against theirs. The 27.7 in August is not a typo, it's really that bad. Great climate for snow, terrible for heat.
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Post by Deleted on Feb 4, 2021 11:28:21 GMT -5
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Post by MET on Feb 4, 2021 11:37:39 GMT -5
I'm amazed they haven't done anything about having an under-reading sun recorder at Heathrow then. Not very professional.
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