CityCyclingEdinburgh Forum » Infrastructure

Ice

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  1. Firedog
    Member

    NEPN was crisp, but dry. Very quiet though!

    Posted 11 years ago #
  2. Darkerside
    Member

    -7 out here. Which apparently works out at -16 with 30kph moving speed. Ouch.

    Posted 11 years ago #
  3. chdot
    Admin

    Washed a couple of bikes this morning.

    Spilled water froze in about 10 minutes.

    Posted 11 years ago #
  4. crowriver
    Member

    Suffice to say I did not start my DIY audax this morning. Apart from the ice hazard, I think I would have frozen stiff myself without some serious winter clothing on.

    Temperatures set to rise at the weekend...

    Posted 11 years ago #
  5. Arellcat
    Moderator

    My commute to work took 20% longer today on account of the air being too dense to push through. I arrived at work with my fingers and hamstrings frozen solid. If it's like this tomorrow I'll have to put my 3/4s 5/8s on under my longs!

    Scottish wind chill chart from last winter's discussion.

    Posted 11 years ago #
  6. crowriver
    Member

    Aye, I figured out that a descent going at say 35mph would produce a wind chill of up to -20 centigrade! That's mostly why I'm not out on the bike today...

    Posted 11 years ago #
  7. AKen
    Member

    Something not right about that wind chill chart. According to the figures, very strong winds are less chilling than more moderate winds.

    Posted 11 years ago #
  8. crowriver
    Member

    @AKen, yes that's interesting. Maybe at 90mph the friction effect of air passing over you actually warms you up? In any case rather irrelevant as impossible to cycle in anything much over 30mph...*

    * - although a very long descent might see speeds reach 40+mph...

    Posted 11 years ago #
  9. Kenny
    Member

    -5.6C for me at drum brae this morning. Managed the 6.7 mile commute 10% slower overall with 700x25 slicks on. Probably not that good an idea, those tyres.

    Posted 11 years ago #
  10. Uberuce
    Member

    Actual grit on the Broomhouse path! Done, I think, with the hand-pushed cart/disperser that covers the path well, rather than requiring citizen cyclists in yellow with spades.

    Posted 11 years ago #
  11. duncans
    Member

    B800 Queensferry/Kirkliston path gritted!

    Airport roundabout section of A8 path ungritted and pretty lethal still.

    Posted 11 years ago #
  12. kaputnik
    Moderator

    Amazed by Broomhouse gritting, seeing as it's "not adopted" can only assume it wasn't the council!

    Posted 11 years ago #
  13. Nelly
    Member

    K - I think it maybe was cec - there are a lot of peds going to/from bus stops early doors - maybe they got complaints? Might ask my NBF at the council office in edin park.

    No danger it was the contracters!

    Posted 11 years ago #
  14. amir
    Member

    It almost felt warm this morning.

    Posted 11 years ago #
  15. chdot
    Admin

    "It almost felt warm this morning."

    You must have your own microclimate.

    According to KB it's virtually same (slightly sub-zero) temp + wind speed (not much) -

    http://www.geos.ed.ac.uk/abs/Weathercam/station/latestweek.html

    Posted 11 years ago #
  16. Definitely different out at Duddingston. Was -2.5 yesterday morning; this morning +1.5...

    Posted 11 years ago #
  17. amir
    Member

    "You must have your own microclimate. "

    Well it was a mere -1 in Eskbank this morning compared to -4.4 yesterday.

    Posted 11 years ago #
  18. chdot
    Admin

    Must be KB has it's own microclimate!

    Posted 11 years ago #
  19. SRD
    Moderator

    KB has been reporting higher temps than other sources all week.

    Posted 11 years ago #
  20. chdot
    Admin

    I think that's inevitable for a weather station on top of a building that is leaking heat.

    This is probably more noticeable in fairly still air.

    Posted 11 years ago #
  21. Uberuce
    Member

    Beardometer read it as warmer today than yesterday.

    Posted 11 years ago #
  22. Arellcat
    Moderator

    My outdoor thermometer reckoned it was -0.6ºC at breakfast time today.

    Posted 11 years ago #
  23. steveo
    Member

    The *ahem* car said -1.0 this morning but I'm not sure how big the steps* are.

    *There is a better, proper, word for that term but its just sitting at the edge of my conciousness.

    Posted 11 years ago #
  24. AKen
    Member

    For a change this morning, I decided to take the Water of Leith path from Currie to Gorgie Road. I usually avoid it in winter as it can be a mud bath but reckoned it would be frozen hard. It was - good for riding, even over some rutted, frozen bits. At some points, though, I realised I was riding on a sheet of ice! Managed to stay upright all the way though and the diversion was worth it for the sight of every branch picked out in sparkling frost.

    Interesting micro-climate change after crossing over Lanark Road at the WOL visitor centre. In the sheltered surroundings of Colinton Dell, every tree had thickly frozen branches. As soon as I left the Dell and carried on under the railway and the canal there was no frost on any of the branches at all.

    Posted 11 years ago #
  25. Arellcat
    Moderator

    @steveo: 'intervals' or 'resolution' if you're talking about the measurement process itself; 'graduations' if you're talking about reading a scale.

    Posted 11 years ago #
  26. steveo
    Member

    Graduations! I thought of that word and wasn't sure that it was correct.

    Posted 11 years ago #
  27. lionfish
    Member

    I emailed the weather station person last week to ask why it always seemed so much higher than the airport,

    On 01/12/2012 18:11, Michael Smith wrote:

    Hello!

    I regularly look at the kb weather station data (especially when the weather gets a bit extreme!). Just wondering about the temperature info - it always seems a bit warmer than I expect. For example there's a lot of ice about at the moment, but the weather station says it's barely been below zero? The weather station over at the airport says -2 deg C and the KB one is at +1 deg C (at 6pm, 01/12/12). Is this an extreme urban-heat-island effect, or is something else causing the discrepancy??

    Thanks!

    Mike.


    On 01/12/2012 21:22, Massimo wrote:

    Hi Mike,
    thanks for your comments, it is good that the weather station data are used.

    The problems may be that the temperature probe, and the weather station are on top of a large building, which create as you said, an heat island even if very localised. The discrepancy may be larger in situation like this morning when the wind speeds are relatively low.

    However, in principle it is possible to have a difference of few degrees between JCMB and the airport. The Met Office calculated temperature for "Edinburgh Bruntsfield Youth Hostel" was 0 degree at 06:00. (http://www.metoffice.gov.uk/public/weather/forecast/?tab=meteo).

    Unfortunately the location of the weather station is less than ideal but was the best available location in KB.

    Posted 11 years ago #
  28. ARobComp
    Member

    Some positive news
    CEC dropped a yellow grit bin off at the top of the innocent railway tunnel this morning. No grit in it yet but it's a start!

    Posted 11 years ago #
  29. DaveC
    Member

    CCE is dropping loads of grit bins out. Spoke to a member of the roads crew this morning. He had been dropping bins off yesterday and also was doing so today. He said he was going to be filling them this afternoon. I had stopped to point out that a bin on the NECP (correct TLA??) under Clark Rd E had been pushed into the ditch/water on the path. He looked glum saying he had put it out yesterday and was going to be going round again today to fill them all. I imagine he's not the only council empolyee doing this. I have tweeted @north_team to report it, to back up my conversation with the roads team. You might like to tweet @south_team with any problems. They are usually quite good at responding.

    Posted 11 years ago #
  30. chdot
    Admin

    From two years ago -

    "Innocent Path Grit Boxes?"

    http://citycyclingedinburgh.info/bbpress/topic.php?id=1691

    Posted 11 years ago #

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