Dear Sirs,

I am trying to estimate ETP vía the Penman-Monteith equation. My wind data is expressed in km/24hours., since it is measured with a run-of-wind anemometer I would like to convert it into m.s-1 in order to use it in the equation. Is it okay to multiplied it by 1000 to convert km into m and then divide the result by 86400? I presume I may be underestimating the daily mean wind speed if I do so. I have data from other station in m.s-1, is there any way to correct or improve the conversion using that data? 

Thank you very much indeed.

Regards,

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