Skip to content

Germany’s New Faversham

September 27, 2016
tags:

By Paul Homewood 

 

 

image

 http://notrickszone.com/2016/09/25/germanys-all-time-record-high-set-in-2015-looks-dubious-likely-due-to-uhi-instrumentation-error/#sthash.b5gRM6A2.k6vMcvRQ.dpbs

 

 

It looks like Germany has its own Faversham!

From No Tricks:

At the Germany-based European Institute for Climate and Energy (EIKE), Helmut Kuntz writes that Germany’s all-time record high temperature recorded last year, 2015, is likely an artifact of the urban heat island effect (UHI) and instrumentation error margins.

 

Photo right: Kitzingen station

 

In 2015 the Kitzingen weather station located in southern Germany set a new all-time high when it reached 40.3°C — twice: on July 5 and August 7 — breaking the earlier record of 40.2°C set on 27 July 1983 in Gärmersdorf. The whopping margin: a whole 0.1°C! .

So why is Kitzingen suddenly so hot?

EIKE guest writer Josef Kowatsch has often claimed that the UHI has played a major role in producing the warming effect over the past decades. Recently that claim got a boost of support from University of Wurzburg climate researcher Prof. Heiko Paeth, who in an interview with MAIN POST daily here on September 7, 2016, stated that it likely has more to do with station siting then it does with a climate trend.

According to Prof. Paeth, the high reading can be traced back to Kitzingen having certain special features.

First the town of Kitzingen is located at a relatively low elevation some 20 km east of Wurzburg — situated in the Main Valley at the bottom of a sort of a bowl where heat can collect.

Secondly, he tells the MAIN POST that fresh, westerly winds that normally act to cool Germany in the summertime have been obstructed by a commercial district built not long ago where once a US base had been located. The Main Post writes:

What remains is an obstacle for the air flow from the west. The town has blocked off its fresh air feed-in duct, says Paeth. ‘That could be an explanation for the heat.’”

 

Instrumentation error margin of +-0.4°C

Moreover Kuntz reports that the Kitzingen station was first put into operation in 2005 and the German DWD weather service equipped it with the electronic PT 100 instrument, which in comparison tests has been shown to produce considerably higher readings. Also such a weather station has a temperature measurement error of +-0.4°C at temperatures of 40°C:

Accuracy of the WXT 520 sensor for weather stations. As the ambient temperature rises over 0°C, so does the margin of error.

 

Kuntz adds that if the urban heat island effect is the reason for the 0.1°C temperature increase over the last 32 years in Germany, then the supposed climate change warming of the planet looks like as follows:

– Globally it has not gotten warmer over the past 103 years.
– The global temperature upper limit temperature has not changed at all in 74 years.
– It has not gotten warmer in Germany over the past 32 years.
– If the “discarded” older measurements were used, it would be much warmer earlier than currently stated.

At the Germany-based European Institute for Climate and Energy (EIKE), Helmut Kuntz writes that Germany’s all-time record high temperature recorded last year, 2015, is likely an artifact of the urban heat island effect (UHI) and instrumentation error margins.

In 2015 the Kitzingen weather station located in southern Germany set a new all-time high when it reached 40.3°C — twice: on July 5 and August 7 — breaking the earlier record of 40.2°C set on 27 July 1983 in Gärmersdorf. The whopping margin: a whole 0.1°C! Photo right: Kitzingen station.

So why is Kitzingen suddenly so hot?

EIKE guest writer Josef Kowatsch has often claimed that the UHI has played a major role in producing the warming effect over the past decades. Recently that claim got a boost of support from University of Wurzburg climate researcher Prof. Heiko Paeth, who in an interview with MAIN POST daily here on September 7, 2016, stated that it likely has more to do with station siting then it does with a climate trend.

According to Prof. Paeth, the high reading can be traced back to Kitzingen having certain special features.

First the town of Kitzingen is located at a relatively low elevation some 20 km east of Wurzburg — situated in the Main Valley at the bottom of a sort of a bowl where heat can collect.

Secondly, he tells the MAIN POST that fresh, westerly winds that normally act to cool Germany in the summertime have been obstructed by a commercial district built not long ago where once a US base had been located. The Main Post writes:

What remains is an obstacle for the air flow from the west. The town has blocked off its fresh air feed-in duct, says Paeth. ‘That could be an explanation for the heat.’”

Instrumentation error margin of +-0.4°C

Moreover Kuntz reports that the Kitzingen station was first put into operation in 2005 and the German DWD weather service equipped it with the electronic PT 100 instrument, which in comparison tests has been shown to produce considerably higher readings. Also such a weather station has a temperature measurement error of +-0.4°C at temperatures of 40°C:

Accuracy of the WXT 520 sensor for weather stations. As the ambient temperature rises over 0°C, so does the margin of error.

Kuntz adds that if the urban heat island effect is the reason for the 0.1°C temperature increase over the last 32 years in Germany, then the supposed climate change warming of the planet looks like as follows:

– Globally it has not gotten warmer over the past 103 years.
– The global temperature upper limit temperature has not changed at all in 74 years.
– It has not gotten warmer in Germany over the past 32 years.
– If the “discarded” older measurements were used, it would be much warmer earlier than currently stated.

12

 

18

 

43

 

0

– See more at: http://notrickszone.com/2016/09/25/germanys-all-time-record-high-set-in-2015-looks-dubious-likely-due-to-uhi-instrumentation-error/#sthash.b5gRM6A2.k6vMcvRQ.dpuf

http://notrickszone.com/2016/09/25/germanys-all-time-record-high-set-in-2015-looks-dubious-likely-due-to-uhi-instrumentation-error/#sthash.b5gRM6A2.k6vMcvRQ.dpbs 

 

I recall NOAA, not to mention the usual suspects like Borenstein and Romm, making a lot of fuss about this last year, calling it record heat in Germany.

As I pointed out at the time, the fact that the new record was equalled just a month later at the same site suggested that the temperature measurements were not reliable. I was also unimpressed that 32 years of supposed global warming had only managed to lift temperatures by a tenth of a degree.

Now it appears we have another Faversham on our hands, a station with only a handful of years of record, and clear issues about siting.

But it appears that the German Met Agency cares no more about the accuracy of its “new record”, in its quest to find ever higher temperatures, than our own Met Office does.   

10 Comments leave one →
  1. A C Osborn permalink
    September 27, 2016 11:39 am

    I think you multiply this world wide, Airports being the main culprits though.

  2. Sara Hall permalink
    September 27, 2016 11:52 am

    My latest yardstick is the morning consistency of the butter in my unheated, north facing kitchen and I now consider it every bit as reliable as the temperature readings from official sites like these.
    This year the butter was only easily spreadable (without tearing the bread) for about two weeks and that goes hand in hand with the few noticeably warm nights we had at the beginning of September.

  3. tom0mason permalink
    September 27, 2016 11:53 am

    The brochure for that particular model is here —
    https://s.campbellsci.com/documents/us/product-brochures/b_wxt520.pdf

    The errors quoted on all measurement are interesting. Also is this warning on the instrument’s webpage —

    ” However, the WXT520 is not intended for weather stations that require research-grade performance.”
    https://www.campbellsci.com/wxt520

    • tom0mason permalink
      September 27, 2016 3:47 pm

      Now there’s a novel idea, from the brochure —

      Precipitation is measured one raindrop at a time. Whenever a
      raindrop hits the precipitation sensor, an electrical signal is pro-
      duced that is proportional to the volume of the drop.

      I wonder how it differentiates between rain, sleet, hail, and bird crap?

  4. Gerry, England permalink
    September 27, 2016 1:03 pm

    Temperature appears simple but is far from it. In the evapotranspiration cycle the suggestion is the Stevenson screen is wrong and should be much lower giving how important it is to climate. All sorts of geographical features can affect readings as well as the man made stuff. Even vegetation that grows and is trimmed in a cycle can produce a saw-tooth output that is seen as a fault. when homogenized to correct it the higher readings are assumed to be right when actually they aren’t.

    • David Richardson permalink
      September 27, 2016 4:18 pm

      Quite so Gerry – anyone who has had even a passing experience of Stevenson screens knows they are not wonderfully consistent – especially on the days that wind turbines don’t produce any electricity. keeping a good exposure and consistent surroundings (including the grass) is important. When I was a boy met man cutting the enclosure grass was a weekly task.

      The exposure of some of the “high quality” sites used for the global temp, seen on the web, is amazing (not – I think my grandkids says).

  5. tom0mason permalink
    September 27, 2016 4:01 pm

    “Kuntz adds that if the urban heat island effect is the reason for the 0.1°C temperature increase over the last 32 years in Germany…

    Look guys get with the program, using temperatures as old as 32 years is a big no-no. As NASA, GISS and all other reputable agencies on the program you know, you’ve got to adjust those old temperatures.
    Temperature increase of only 0.1°C!?
    What are you guys on? Please correct it ASAP! We all over here know it should be 0.666°C higher.

    .

    Sheesh.. call yourselves weather or climate professionals and you can’t even do some elementary adjustments.

    • David Richardson permalink
      September 27, 2016 4:09 pm

      LOL – Like it tomo

  6. David Richardson permalink
    September 27, 2016 4:07 pm

    Back when I was a boy – there was a time when only thermometers tested against a known world standard for half a climatologist’s working life would be accepted for anything other than a desk pen tray – now any old crap seems to be used. Well it will be while they show dubious warming – they will not be good enough for any “cold” temps.

  7. September 28, 2016 2:00 pm

    Sara’s butter-test is one I also use, we are still finding it spreads well, but it usually relates to when the central heating goes on in October.

    Fancy one of the WXT 520s, it would be fun to watch the count of and size of raindrops. Could then claim a lucrative research grant to prove that raindrop diameter is increasing / reducing due to climate change.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: