The following are a variety of meteorological effects which affected
the Vikings, some directly some indirectly:
- Magnetic Storms:
- Vary in intensity and frequently with the sunspot cycle, similarly to the
aurora. Magnetic storms vary greatly in duration from a few hours to several
days. A wide variety of optical phenomena such as mirages,
green flashes, solar
arcs, halos, coronas,
ice blinks, land blinks, aurora
borealis, and St. Elmo's fire are
observed in these waters.
- Sunlight Hours:
- At many points in Northern Scandinavia the possible duration of sunshine
is considerably reduced because of the screening effect of the mountains and
hills. Hence, the possible duration of sunshine in many Norwegian valleys
and Fjords for instance is less than
55% of what it could have been by free horizon or lack of topographical
blocks.
-
-
| Latitude |
Midnight Sun |
Dark Season |
| |
|
|
| 67 Degrees N. |
June 2 - July 10 |
|
| 68 Degrees N. |
May 27 - July 18 |
December 10 - January 2 |
| 71 Degrees N. |
May 14 - July 31 |
November 22 - January 21 |
|
