How is the relative humidity parameter calculated

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How is the relative humidity parameter calculated

Postby pvandewater » November 19th, 2012, 7:43 pm

I have used hysplit for some time and recently was messing around with generating hourly relative humidity data for specific locations. What I was getting was highly variable at times and other times somewhat respectable numbers (meaning that the were what I expected not necessarily what actually occurs). I have not done an exhaustive search but could not find any quick explanations of how the data is generated within the model. Any help out there?
pvandewater
 
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Re: How is the relative humidity parameter calculated

Postby glenn.rolph » November 21st, 2012, 11:16 am

Are you referring to the ability of HYSPLIT to output meteorological variables along a trajectory? Or are you referring to how is RH calculated in HYSPLIT from the meteorological fields and used in chemistry routines in the model?
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Re: How is the relative humidity parameter calculated

Postby pvandewater » November 26th, 2012, 12:27 am

I was generating RH values above a single spot on a bi-hourly basis and they seemed at times to be highly variable. The variability went against what i expected, however I must admit that there may be nothing wrong with it. That is why I asked about how the calculations were made.

Cheers
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