Please read the posts in the Announcements section about the current status of Cumulus development now that I have retired

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Latest Cumulus release v1.9.4 (build 1099) - Nov 28 2014
Latest Cumulus MX release - v3.0.0 build 3043 Jan 20 2017. See this post for download

Evaptranspiration Today

Discussion and questions about Cumulus weather station software version 1. This section and its subforums are the main place to get help with Cumulus. Anything which is not specific to the type of weather station goes in here; for anything specific to a type of weather station, please use the appropriate subforum. Use the 'website development' section for any questions relating to creating or running a web site for Cumulus data. Discussion of the stations themselves in these sections is fine.
noopara
Posts: 4
Joined: Wed Aug 08, 2012 3:22 pm
Weather Station: Davis Vantage Pro
Operating System: XP SP3
Location: Gig Harbor, Washington

Evaptranspiration Today

Postby noopara » Sun Jul 08, 2018 11:54 pm

How is ET Today calculated? Is it a average of multiple calculations over a 24 hour period. How exactly is it calculated.

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steve
Cumulus Author
Posts: 26558
Joined: Mon Jun 02, 2008 6:49 pm
Weather Station: None
Operating System: None
Location: Vienne, France
Contact:

Re: Evaptranspiration Today

Postby steve » Mon Jul 09, 2018 10:45 am

Cumulus does it in the same way as it does rainfall. It gets the annual total from the station periodically, and subtracts the value saved at midnight from the current reading. I can't tell you how the station calculates the figure.
Steve
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Hosting available for Cumulus web sites. See http://sandaysoft.com/forum/viewtopic.php?f=2&t=11876

Please read the posts in the Announcements section about the current status of Cumulus development since I have retired from my day job

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mcrossley
Posts: 5171
Joined: Thu Jan 07, 2010 9:44 pm
Weather Station: Davis VP2
Operating System: Stretch Lite rPi
Location: Wilmslow, Cheshire, UK
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Re: Evaptranspiration Today

Postby mcrossley » Mon Jul 09, 2018 11:09 am



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