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CET Record Months

August 19, 2015

By Paul Homewood  

 

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http://www.metoffice.gov.uk/hadobs/hadcet/cet_record_breakers.html

 

The CET website contains the above table of monthly records. It is interesting that the last decade does not seem overloaded with records, as might be expected. Record lows seem to mainly drop into much earlier years, although Nov 2010 crops up.

 

 

 

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11 Comments
  1. August 19, 2015 9:14 am

    I am sure that there must be a mathematical formula for the number of high/low records which would be expected for a given length of data, assuming that average temperatures remain constant.
    Instinctively I would expect very few for CET given the length of the data base.
    By that I mean “genuine” records, not ties.
    But of course, average CET is probably rising due to UHI.

  2. August 19, 2015 9:29 am

    Paul, we have had a really shit summer up here in Aberdeen. I mean really shit – probably linked to the el nino. I have two dogs that I walk every day. It strikes me that for much of the last 6 weeks the temperature has not got above 13C. We have hardly see the sun. And we have had much rain. And yet when I check the MET office station data it tells me that there has been nothing unusual about July this year. The two stations closest to Aberdeen are Leuchars and Braemar. Leuchars has mean Tmax for July of 18C. And Braemar 15.9C. I can’t recall any day getting up to 18 let alone having half the days well over that temperature.

    Do you know any way of contacting amateur meteorologists who may have their own records? I’m kind of interested in auditing the MET office data. I frankly don’t believe anything the MET office and other climate organisations publish these days.

    http://www.metoffice.gov.uk/public/weather/climate-historic/#?tab=climateHistoric

    • August 19, 2015 9:49 am

      You could try the Met Office WOW site:

      http://wow.metoffice.gov.uk/

      Also if you ask nicely the Met Office will give you the daily readings. It might be an idea to start plotting your own ones, then compare to the Met version at the end of the month.

    • Andy DC permalink
      August 19, 2015 7:53 pm

      I live in the northeast suburbs of Washington, DC, about 15 miles from where the “official” DC temperature is recorded at National Airport. I set a max/min thermometer out on my 10th floor balcony, a north exposure that has no direct sun exposure. Surrounded by wooded parkland, with no significant bodies of water in the area.

      To make a long story short, my high temperature readings can sometimes be 12F degrees cooler than National Airport, with no fronts in the area. My highest temperature this summer has been 86, while National’s high on the same day was 98.

      I checked with a friend who lives 25 miles SE of National Airport and keeps a similar record. He lives in a one story house and takes his readings in his yard. He states that the highest he has been this summer is 90 degrees and that his readings are almost always 5 degrees cooler than National Airport’s readings.

      My conclusion is that siting of the thermometer makes far more difference than you would think. Either that, or these “official” temperatures are an out and out fraud.

      • Richard Mallett permalink
        August 19, 2015 8:46 pm

        Probably airports are worse now than when the weather stations were set up there in the days before jet engines.

    • Ben Vorlich permalink
      August 19, 2015 8:44 pm

      Euan,
      You could try WeatherSpark, not sure if it gives the data you want but it has lots of information for the current year and you can search the entire globe.

      It says, for the last 12 months.

      The longest cold spell was from July 19 to August 3, constituting 16 consecutive days with cooler than average low temperatures. The month of July had the largest fraction of cooler than average days with 65% days with lower than average low temperatures.

      Aberdeen link:-

      https://weatherspark.com/history/28750/2015/Aberdeen-Scotland-United-Kingdom

    • Tim C. permalink
      August 20, 2015 6:30 pm

      If you look at the plot for North Atlantic temperatures at http://www.climate4you.com/ it’s fairly easy to see why Aberdeen has had a bad summer (and why it will probably have more of them in the years to come, not to mention the tough winters).

  3. August 19, 2015 3:59 pm

    One place that I often get recent data from is Weather Underground. I won’t make any claims about how accurate it is, but one thing they do have is private weather stations they collect data from as well as airports.

    You might look at this:

    http://www.wunderground.com/history/airport/EGPD/2015/7/1/CustomHistory.html?dayend=19&monthend=8&yearend=2015&req_city=&req_state=&req_statename=&reqdb.zip=&reqdb.magic=&reqdb.wmo=

    I don’t know how close this airport (EGPD) is actually to Aberdeen but it is what WU gives for history of the area.

    A quick glance says max temp of 80 deg F and a mean of 67 F.

    It is one place to get some data to look at, anyway. If you bring up the history (using custom you can get up to a year at a time) and go to the very bottom, you can collect the data in a CSV format ready to dump into excell. I usually open it in a separate screen, select all of it and then copy it direct to a blank worksheet. Then in excell there is a place to convert from text to columns. Works well and is easy.

    • August 19, 2015 4:00 pm

      Above: that max and mean is for the period of 1 July to present.

  4. Richard Mallett permalink
    August 19, 2015 4:59 pm

    Looking at the monthly averages, February, May, June and July are all below the average CET, so 2015 could surpass 2010 and 1996 for the most months (6) below the average since 1987. The yearly average will be intreresting also. I believe that one can believe the CET data.

    • AndyG55 permalink
      August 20, 2015 2:36 am

      IIRC, in UAH, 2015 is currently 4th on a “year to date” basis, (end of July), well behind a 1998 etc.

      Down here for Australia, 2015 was something like 13th on a year to date basis.

      *disclaimer, going from memory, as I am on work computer at the moment)

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