Re: Changing precipitation units using NCL

From: Dennis Shea (shea AT cgd.ucar.edu)
Date: Tue May 24 2005 - 12:17:29 MDT


Hi everyone
>
>I have 2 precip datasets with different units. One dataset has units of
>mm day-1 while the 2nd has units of kg m-2 s-1.
>
>As part of the process to change from kg m-2 s-1 to units of mm day-1 I
>divide by the density of water at 4oC (1000 kg m-3). However this
>appears to give incorrect values.
>
>I am presuming that water density variations with air temperature is the
>problem, but it may lie elsewhere.
>
>Does anyone have code (or pseudo code) that will correctly change my
>units???
>
>Many thanks for any assistance,
>
>Maurice

Hi Maurice,

I think u just need to multiply by 86400.

D

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