5,838
edits
Heat/cold degree days and Chill hours: Difference between revisions
Heat/cold degree days and Chill hours (view source)
Revision as of 17:07, 26 May 2014
, 17:07, 26 May 2014→Heat and Cold Degree Days for NOAA reports: Corrrection of UK Threshold.
m (→Chill Hours and/or Air Frost: mention calendar day caution) |
m (→Heat and Cold Degree Days for NOAA reports: Corrrection of UK Threshold.) |
||
| Line 46: | Line 46: | ||
=Setting the threshold= | =Setting the threshold= | ||
== Heat and Cold Degree Days for NOAA reports == | == 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). | [[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 === | === CAUTION: Think carefully, about what threshold to use === | ||