Heat/cold degree days and Chill hours: Difference between revisions

Heat/cold degree days and Chill hours (view source)

Revision as of 15:12, 17 May 2021

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→‎Heat and Cold Degree Days for NOAA reports: add MX sub-section

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 =Setting the threshold=
 == Heat and Cold Degree Days for NOAA reports ==
-[[File:NOAA_Setup_extract.jpg‎]]The thresholds for '''Heat and Cold Degree days''' are set in the ''NOAA Setup'' option within the ''Configuration'' menu.  The picture shows just parts of the setup screen. It allows you to specify, in the units you have selected to use in your implementation of Cumulus, the two thresholds (they do not have to be the same, although they are in the picture that shows the thresholds traditionally used in the UK in the pre-computer age of standard reference look-up tables). Since it introduced electronic processing in the 1960s, the UK Meteorological office has used 22 Celsius for Cold degree days, but it still uses 15.5 Celsius for Heat degree days.
-=== CAUTION: Think carefully, about what threshold to use ===
+====MX Settings===
+Please see [[Cumulus.ini#Thresholds]] for information about setting thresholds in latest MX release. No screenshot is included, as there are 2 different ways in which the setting screens can now be displayed, so to show one or both would be muddling.
+===Legacy Software===
+[[File:NOAA_Setup_extract.jpg‎]]The thresholds for '''Heat and Cold Degree days''' are set in the ''NOAA Setup'' option within the ''Configuration'' menu.  The picture shows just parts of the setup screen.
+==== CAUTION: Think carefully, about what threshold to use ====
 Cumulus stores your selected threshold values in the '''cumulus.ini''' file within the folder containing your Cumulus software (see [[Cumulus.ini_(Cumulus_1)#Section:_NOAA]]).
+===General Explanation===
+It allows you to specify, in the units you have selected to use in your implementation of Cumulus, the two thresholds (they do not have to be the same, although they are in the picture that shows the thresholds traditionally used in the UK in the pre-computer age of standard reference look-up tables). Since it introduced electronic processing in the 1960s, the UK Meteorological office has used 22 Celsius for Cold degree days, but it still uses 15.5 Celsius for Heat degree days.
 '''If you later change the threshold, you will have inconsistencies on your reports:'''