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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 4018) - 28 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)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
Rainfall since 00:00
- Snupple
- Posts: 40
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Rainfall since 00:00
Hi,
Is there a chance of having a option to change the 'Rainfall since 00:00" to "Rainfall since 09:00" if you have the logrollover set to 9am?
Is there a chance of having a option to change the 'Rainfall since 00:00" to "Rainfall since 09:00" if you have the logrollover set to 9am?
- beteljuice
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Re: Rainfall since 00:00
Are you talking about in the web pages ?
If so ...
<#rfall> = Rain so far (Station) 'Today'
<#rmidnight> = Rain since ... midnight
http://wiki.sandaysoft.com/a/Webtags
If so ...
<#rfall> = Rain so far (Station) 'Today'
<#rmidnight> = Rain since ... midnight
http://wiki.sandaysoft.com/a/Webtags
......................Imagine, what you will KNOW tomorrow !
- Snupple
- Posts: 40
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Re: Rainfall since 00:00
beteljuice wrote:Are you talking about in the web pages ?
No, in Cumulus itself
- steve
- Cumulus Author
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Re: Rainfall since 00:00
If you have the rollover set to 0900, then 'rainfall today' is the rain since 0900. All of the 'today' figures start at 0900 for those with an 0900 rollover. The 'rain since midnight' is provided as an addition for those with 0900 rollovers who also want rain since midnight.
Steve
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Re: Rainfall since 00:00
Are there any issues with changing to 9:00am rollover from 00:00 rollover after the station has been up for some time?
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Re: Rainfall since 00:00
hills wrote:Are there any issues with changing to 9:00am rollover from 00:00 rollover after the station has been up for some time?
Cancel that, I found this:
So I assume this means today's data (if changed today) will contain 33 hours of data, not 24, ie midnight until 9:00am the following day. If so that would just be a once off hit of "not quite righteousness", and then it will all be spot on after that?Steve wrote: You'll get inconsistencies. Cumulus stores the data according to your end of day setting, e.g. the dayfile entries are created at the rollover time for the previous 24 hours, so if you change your rollover time, your previous data will now be assumed to represent 0900-0900. Similarly, when you're using an 0900 rollover, the first 9 hours on the first of the month are actually in the previous month's log file, because they 'belong' to that month.
It's not as bad as trying to change your units, which completely invalidates your data, but it makes your previous data "not quite right". As with the units settings, the intention is that Cumulus 2 won't have this issue.
- steve
- Cumulus Author
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Re: Rainfall since 00:00
It would mean that your data from before today would not be quite consistent with the data from today onwards in respect of things like rain totals, and the timestamps of highs and lows (e.g. where a minimum temperature occurred between midnight and 0900 - the usual case - it will have been timestamped a day later than it would have been under an 0900-0900 regime). It's perhaps a subtle difference, but it would matter if you were keeping strict records and comparing with other stations. But I don't think Cumulus actually complies with Australian rules for timestamping anyway, so this is all perhaps rather academic as far as you're concerned.hills wrote:So I assume this means today's data (if changed today) will contain 33 hours of data, not 24, ie midnight until 9:00am the following day. If so that would just be a once off hit of "not quite righteousness", and then it will all be spot on after that?
It would probably be sufficient simply to state somewhere that figures before a certain date were midnight to midnight.
Steve
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Re: Rainfall since 00:00
ok thanks. I've converted over so now I'll be in sync with the BOM sites.
- Gordon-Loomberah
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Re: Rainfall since 00:00
umm, not quite, you will be one day out with rain and everything else. Cumulus records the data in the wrong day cf. the BOM in Oz.hills wrote:ok thanks. I've converted over so now I'll be in sync with the BOM sites.
Loomberah Weather: http://gunagulla.com
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Re: Rainfall since 00:00
Ah ok, so if at 9:00am tomorrow morning my station has recorded 20mm, it will record it against tomorrow's date (the 28th) whereas BOM will record it against the 27th, is that correct?
Even so that's not really an issue for me as this is the site I want to be in sync with: http://www.bom.gov.au/sa/flood/adelaide_metro.shtml
If I view the site at 3:00pm tomorrow, both it and my station will show the totals since 9:00am tomorrow morning, won't they?
Even so that's not really an issue for me as this is the site I want to be in sync with: http://www.bom.gov.au/sa/flood/adelaide_metro.shtml
If I view the site at 3:00pm tomorrow, both it and my station will show the totals since 9:00am tomorrow morning, won't they?
- steve
- Cumulus Author
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Re: Rainfall since 00:00
I think it's the other way round; Cumulus counts the period from midnight to 0900 as part of the previous day, as per UK Met Office practice, which is logical since 15 of the hours were from that day and only 9 from the following day. I'm not even sure that the BOM credits all of the data ending at 0900 to the same day; or maybe I'm thinking of another country.hills wrote:Ah ok, so if at 9:00am tomorrow morning my station has recorded 20mm, it will record it against tomorrow's date (the 28th) whereas BOM will record it against the 27th, is that correct?
If it's just a case of using 'today' instead of 'yesterday' for everything, that's not too hard to fix.
Steve
- Gordon-Loomberah
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Re: Rainfall since 00:00
Yes, its the other way around. It isnt generally a huge problem, other than messing up monthly and annual rainfall figures (or temp records) if it rains at the ends of each period
Loomberah Weather: http://gunagulla.com
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Re: Rainfall since 00:00
Ok thanks, It sounds to me as if Cumulus is doing it the best way then!
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Re: Rainfall since 00:00
The bom only show rain since 9am in there observations all other max & mins are since midnight, but for official archive data the max & min temp recorded is between 9am & 9am dated the start of the 9am day. A bit of a mixed bag if you ask me.
http://www.bom.gov.au/catalogue/observa ... ions.shtml
http://www.bom.gov.au/catalogue/observa ... ions.shtml
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Re: Rainfall since 00:00
Thanks for that Gerard. At least now I'm in sync with you and Gordon!
Do you keep your rollover time at 9:00am all year or switch to 10:00am during daylight savings?
Do you keep your rollover time at 9:00am all year or switch to 10:00am during daylight savings?