[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[UDUNITS #XPL-147330]: udunits

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [UDUNITS #XPL-147330]: udunits
  • Date: Fri, 27 Apr 2007 15:31:59 -0600
James,

> The Dobson Unit is the most common unit for measuring ozone concentration.
> 
> 1 Dobson Unit (DU) is defined to be 0.01 mm thickness at STP.
> 
> 1 DU ~ 2.69E+20 molecules per square meter

I've added the unit "dobson" (symbol "DU") to the UDUNITS-2
package that I hope to release relatively soon.

If you want to add the unit to your existing UDUNITS package,
then I suggest using the following entries

dobson    P (2.69e20/6.022e23) mole/meter2
DU        S dobson


Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: XPL-147330
Department: Support UDUNITS
Priority: Normal
Status: Closed