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Post by Deleted on Mar 30, 2018 8:52:44 GMT -5
smhi use ekholms-modéns formula. which is (t07*x+t13*y+t19*z+tmax*b+tmin*a)/100
a, x, y, z and b are coefficents that depends on longitude and month.
t07 is temperature at 07:00, t13 at 13:00 and t19 at 19:00.
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Post by Babu on Mar 30, 2018 10:08:08 GMT -5
smhi use ekholms-modéns formula. which is (t07*x+t13*y+t19*z+tmax*b+tmin*a)/100 a, x, y, z and b are coefficents that depends on longitude and month. t07 is temperature at 07:00, t13 at 13:00 and t19 at 19:00. I thought we took the mean value of every hourly reading |
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Post by Deleted on Mar 30, 2018 10:16:26 GMT -5
i think they do it for consistency. so that the old observations from the 1700-1800s are consistent with the current ones.
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Post by Steelernation on Mar 30, 2018 12:24:53 GMT -5
(Tmin + Tmax)/2.
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Post by rozenn on Apr 2, 2018 5:35:54 GMT -5
I might be wrong, but I think the WMO recommends to use the (Tmin + Tmax)/2 formula for comparison purposes, as many countries don't have 30 years worth of automated data yet. That's the method Meteo France uses. Means that the mean temp is overestimated though.
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Post by Benfxmth on Jan 31, 2023 15:39:22 GMT -5
Max/min / 2
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Post by MET on Jan 31, 2023 15:44:52 GMT -5
They take the standard deviation circumference of the spinketyplonk and divide by the square route of evil^E.49486876X
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