History of Met Office Gravesend-Broadness site

Posted: November 4, 2014 by tchannon in History, Surfacestation

Image

Image OpenStreetMap / Author

New information has appeared so this is based on photographic evidence. The drawings are approximate and simple.

Those who want to look and with access to Google Earth here is a ZIP of Google KMZ files (4kB). Invoke and will go to the image for the date given.
Or
51.464261° 0.310574°

The Met Office station commenced operation during 1996. It is not a full station. I assume it is treated as a minor synoptic station.

Image

Image

PLA (Port of London Authority). Corn means standing grain crop.

Image

Farmer paid to leave land unused. (set aside)

Image

This station has an unstable environment previously, now and into the future.

Here is a government imposed plan.

SWANSCOMBE PENINSULA WEST PLANNING BRIEF (606kB)
Supplementary Planning Guidance
February 2004

The Met Office blog mentions Gravesend 2011

Although all thermometers are housed in standard conditions the geographical location of the station does still have an impact on the temperatures recorded. An example is the Gravesend station, which recorded the highest temperature in the UK this Wednesday. The station is surrounded by a built-up industrial area, which could lead to a slightly higher maximum temperature due to factors such as heat being absorbed by buildings.

http://metofficenews.wordpress.com/2011/09/30/how-are-maximum-temperatures-recorded/

Or rather more effect on minimum? Never mind that, how about providing data on whether it does or not? Don’t they know?

There are extensive electricity grid connections in the area including Thames crossings.
Steel towers were built in 1965 and are 190 metres high.

http://www.nce.co.uk/power-dressing/744086.article
A subject never raised on the Talkshop but ripe for posting is grid losses given an interest in electricity production. (amounts to >1GW for the UK, ohmic, corona, cable iron)


OpenStreetMap

Map was exported as SVG. Inkscape was used for the rest and export as PNG. This was then reduced to 256 colours and tightly compressed for web usage.

Post by Tim

Comments
  1. Doug Proctor says:

    The non-technical think that details don’t matter. (This is also – counter intuitively – the reason that the MSM refuse to retract a story that is grossly incorrect, because there is a “kernel of truth” in the report.)

    It is a signal-to-noise ratio problem. If you have five stations with zero trend, the “trend” of the sixth will define the total. This is my instinctive problem with the global temperature and sea level global averages. Regional, i.e. local, signals become disconnected, become computationally equated, i.e. conflated, with the global.

    (The MSM example is the reverse: since the MSM pick the “kernel” to reflect the whole, they are setting the trend of the 6th, so to speak, to describe the group of 6.)

    When your signal is so small as to only be visible after editing, homogenizing and statistical trending, subsets come to dominate. The one black swan makes the entire flock gray.

  2. michael hart says:

    Nice one, Tim.

    Now we just need the Met Office and the BBC to collectively admit that their public statements may have appeared like an attempt to deceive the general public, but they didn’t mean it and are genuinely sorry for any confusions or misunderstandings they may have caused.

    …and then I woke up….

  3. tchannon says:

    The new information, images appearing on Google Earth is as follows.

    Not so long ago Google added WWII images. (in some parts of the world even earlier work is available)

    The critical change, very recent, is the addition of aerial images marked Kent County Council and it is these which fill in the history between WWII and the much later work used by Google.

  4. tchannon says:

    And again

    UK extremes

    Parameter Location Value
    Highest maximum temperature Gravesend 14.1 °C
    Lowest maximum temperature Pennerley 5.7 °C
    Lowest minimum temperature South Newington -2.0 °C
    Highest rainfall Redesdale Camp 19.8 mm
    Sunniest Leconfield 6.0 hours

    Issued at: 2303 on Tue 04 Nov 2014