isohel
English edit
Etymology edit
iso- + Ancient Greek ἥλιος (hḗlios, “sun”).
Noun edit
isohel (plural isohels)
- A line on a map connecting places that receive equal solar radiation, or equal daily hours of sunshine.
- 1987, Derek F. Hayward, Julius S. Oguntoyinbo, Climatology of West Africa[1], page 29:
- Each map shows a zone of increased sunshine between Ghana and Nigeria, destroying the regular pattern of east-west trending isohels across southern Nigeria and Ivory Coast.