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Old December 20th 04, 06:38 PM posted to uk.sci.weather
Steve Steve is offline
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First recorded activity by Weather-Banter: Apr 2004
Posts: 69
Default Calcultaing thickness from SLP


"Mr Blowman" S@not here.karoo.co.uk wrote in message
...
To calculate thickness values in DAM I have always used the eqution
(1000mB - SLP ) * 0.87 )+ 500 mB height. Is this correct as I cannot
explain the 0.87 constant factor.

Decrease in pressure with height is 1hPa per 0.87 dam, roughly.