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Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024

Cumulus MX V4 beta test release 4.0.0 (build 4017) - 17 March 2024

Legacy Cumulus 1 release v1.9.4 (build 1099) - 28 November 2014 (a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)

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Evaptranspiration Today

Discussion and questions about Cumulus weather station software version 1. This section is the main place to get help with Cumulus 1 software developed by Steve Loft that ceased development in November 2014.
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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 »

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: 26702
Joined: Mon 02 Jun 2008 6:49 pm
Weather Station: None
Operating System: None
Location: Vienne, France
Contact:

Re: Evaptranspiration Today

Post by steve »

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: 12685
Joined: Thu 07 Jan 2010 9:44 pm
Weather Station: Davis VP2/WLL
Operating System: Bullseye Lite rPi
Location: Wilmslow, Cheshire, UK
Contact:

Re: Evaptranspiration Today

Post by mcrossley »

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