Re: Spreadsheet & Remote Data Servers

• To: visad-list@xxxxxxxxxxxxx
• Subject: Re: Spreadsheet & Remote Data Servers
• From: Steve Emmerson <steve@xxxxxxxxxxxxxxxx>
• Date: Tue, 20 Nov 2001 09:33:58 -0700

>Date: Tue, 20 Nov 2001 22:15:46 +1100
>From: Tim Stevenson <tims@xxxxxxxxxx>
>To: James Kelly <J.Kelly@xxxxxxxxxx>
>Subject: Re: Spreadsheet & Remote Data Servers

The above message contained the following:

> I'll think you will find that what is happening is that when you subtract two
> data items which have OffsetUnits the resulting data interval is given the
> base unit without the offset. Degrees C are represented as an OffsetUnit from
> degrees kelvin. When getting a temperature interval of two values in degree
> C the resulting data value will have the absolute unit which is Kelvin. Thus
> degree C - degree C results in an interval measured in degree K. In your case
> the interval is always 0 degrees K which gets converted to -273.15 degC when
> it is displayed.

This is exactly right.  The computed values are temperature *intervals* of 0 
kelvins, which
are -273.15 degrees Celsius.

Regards,
Steve Emmerson   <http://www.unidata.ucar.edu>

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  • Re: Spreadsheet & Remote Data Servers
    • From: Tim Stevenson