[Equest-users] Precipitation value in stat extension file.

Joe Huang yjhuang at whiteboxtechnologies.com
Tue Sep 2 12:39:16 PDT 2014

SInce Mike Witte has already addressed the question about the kPa value in the EPW stat 
file in the BLDG-SIM bulletin board,  I'll refrain from any further comment on your first 

As to your second question, are you saying that the EPW format contains a field  for 
liquid precipitation (which it does), but that it's always empty on "all the weather files"?
Please keep in mind that the EPWs are derived from source weather files.  If the source 
weather file is a TMY3 or TMY2/IWEC, there should be liquid precipitation PROVIDED that it 
was being recorded by the weather station.

Last word of advice: any questions about EPW weather files should be posted on the 
energyplus-support, not the equest-users, bulletin board.


Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 205A
Moraga CA 94556
yjhuang at whiteboxtechnologies.com
http://weather.whiteboxtechnologies.com for simulation-ready weather data
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"

On 8/27/2014 8:59 AM, Mayank Bhatnagar wrote:
> Dear All,
> I am doing some analysis on weather file in which I need precipitation value in mm or  
> inches. However, when I look on stat extension file, there is monthly precipitation 
> value in kPa. As I know 'kPa' is a unit of pressure. Please let me know if anyone has  
> conversion factor for monthly precipitation value from kPa to mm(inches).
> The epw extension file has hourly precipitation value in mm. However, all the weather 
> files do not have hourly precipitation values.
> I'll be grateful if anyone can guide me on this. :)
> Regards,
> Mayank
> _______________________________________________
> Equest-users mailing list
> http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20140902/269c3437/attachment.htm>

More information about the Equest-users mailing list