Question on Dew point

Discussion in 'Alpine & Snow' started by Gummy Knee, Jul 20, 2006.

  1. Gummy Knee

    Gummy Knee First Runs

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    Hi Guys

    Does a low due point, say - 6C equate to low humidity being prevalent. The reason for my question is actually to find a method of choosing the right wax for the conditions without buying a device for temp and relative humidity

    If there is a more reliable way to ascertain humidity from the forecasting data please let me know. (Knowing my luck there will be a relative humidity reading somewhere- yes I am newbie at this)

    Thanks for your help
     
  2. Alex.C

    Alex.C One of Us

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    Its more the difference between the dew point and the acual temperature that indicates how humid it is. If the dew point is -6C yet the actual temperature is around 0 thats about 60% humidity, starting to get dryish. However if the actual temperature is -5C with the same dew point then the humidity would be around %91.

    If you want to work it out for yourself heres a calculator .
     
    #2 Alex.C, Jul 20, 2006
    Last edited by a moderator: Nov 14, 2013
  3. Gummy Knee

    Gummy Knee First Runs

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    Thanks Alex .C

    I will use it and see what outcome I get

    [​IMG]
     
    #3 Gummy Knee, Jul 20, 2006
    Last edited by a moderator: Nov 11, 2013
  4. SAsurfa

    SAsurfa One of Us

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    Yeah as Alex has siad, it doesnt' matter how low the dew point gets, this does not lead to low humidity, its the difference between the due point and real temperature and the formula is..

    If you have the dew and real temperatures you just get the mixing ratios from these and then do the calculation:

    actual mixing ratio(corresponding to dew point)/ saturated mixing ratio(corresponing to real temp) = humidity
     
  5. Dr Ken Moy

    Dr Ken Moy First Runs

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    Calculator is good to play with.
     
  6. neve bambino

    neve bambino First Runs

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    Thanks heaps guys
     
  7. neve bambino

    neve bambino First Runs

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    Err this is my +1 s login

    Thanks again
    GUMMY