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        <span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor">Dear NCL user,</span> 
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        <span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor">Could you please tell me whether there is a function to</span><span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor"> calculate the </span><span style="font-family:Arial;"><span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor">depth</span><span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor"> gradient </span><span style="color:#000000;font-family:Georgia;font-size:16px;white-space:normal;background-color:#FFFFFF;" class="ke-content-forecolor">of a variable</span><span style="font-family:Georgia;font-size:16px;"></span><span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor"> in NCL?</span></span> 
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        <span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor">e.g  dtemperature</span><span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor">/dz</span> 
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        <span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor">z is depth</span> 
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        <span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor">Thank you very very much and best regards,</span> 
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        <span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor">Chathu</span> 
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        <span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor">P.S I know how </span><span style="font-family:Georgia;font-size:16px;color:#000000;" class="ke-content-forecolor">to </span><span style="color:#000000;font-family:Georgia;font-size:16px;white-space:normal;background-color:#FFFFFF;" class="ke-content-forecolor">Compute the meridional and zonal gradients of a variable.</span> 
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