Coldwave frequency (CWF) as defined by the Excess Cold Factor (ECF). (CWF_ECF)
https://w3id.org/hacid/data/cs/climdex/indices/CWF_ECF <https://w3id.org/hacid/onto/data/Variable>
See Appendix D and [Nairn and Fawcett (2013)](#appendixa_refs) for more information.
xsd:string
xsd:string
Coldwave frequency (CWF) as defined by the Excess Cold Factor (ECF). (CWF_ECF)
xsd:string
CWF_ECF
xsd:string
The number of days that contribute to ‘coldwaves’ as identified by ECF_HWN.