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Latest Cumulus MX release v3.0.0 build 3048 - 02 March 2019.
Legacy Cumulus 1 release v1.9.4 (build 1099) - 28 November 2014

See the Wiki for downloading either version.

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.
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noopara
Posts: 4
Joined: Wed 08 Aug 2012 3:22 pm
Weather Station: Davis Vantage Pro
Operating System: XP SP3
Location: Gig Harbor, Washington

Evaptranspiration Today

Post by noopara » Sun 08 Jul 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: 26717
Joined: Mon 02 Jun 2008 6:49 pm
Weather Station: None
Operating System: None
Location: Vienne, France
Contact:

Re: Evaptranspiration Today

Post by steve » Mon 09 Jul 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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mcrossley
Posts: 5452
Joined: Thu 07 Jan 2010 9:44 pm
Weather Station: Davis VP2
Operating System: Stretch Lite rPi
Location: Wilmslow, Cheshire, UK
Contact:

Re: Evaptranspiration Today

Post by mcrossley » Mon 09 Jul 2018 11:09 am


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