Talk:Geography of Norway

message: It would be nice with a topographical map of Norway on the page, as that would show how mountaneous the terrain really is. erikD 18:19, 1 June 2006 (UTC)
thread_title:  [Untitled]

message: --Mattisse 18:47, 18 January 2007 (UTC)
thread_title:  Glacial hiking 

message: This refers to the climate section in article. As many other articles and works of science use the frost-free season (I believe particularly in the US), I was thinking about adding the average frost-free season in the same column as the growing season, making it easy to compare. This is however some work to calculate, and I suggest to use the last 10 years (2000 - 2009) as base period for the frost-free season, and add this for some locations representing a region. Some of the locations in the table has seen their weather station discontinued (Tønsberg, Kristiansand - Kjevik airport can possibly be used, Geilo, Kongsvoll, Honningsvåg, Kirkenes - Kirkenes airport can possibly be used, Longyearbyen - Svalbard airport can possibly be used). For other stations (Molde, Rørvik, Leknes) the data has not been made available in the database.
Bardufoss, located in an inland valley well into the Arctic circle, is one of few locations with overnight frost recorded this autumn. The average length of the frost-free season based on the 10 - year period 2000 - 2009 is 116 days, so for Bardufoss the G Season row would be like this: 134/116. Thus, there would be little needed extra space. 
Legend under the table would be something like this: G Season: Growing season, average days/year with 24-hr average temperature at least 5 C/average length of frost-free season (last overnight frost in spring to first overnight frost in fall, threshold 0 C, base period 2000 - 2009, only added for some stations). It seems that for Tromsø, located in the same region but on the coast, the average lenght of the frost-free season will be some 140 days (no frost recorded this fall yet, so data for 2009 still lacking), which is indeed remarkable for a location at nearly 70 deg N. Other stations I would like to add is Bergen, Oslo and Trondheim, possibly one or two more. What do you think about this suggestion? Orcaborealis (talk) 20:57, 11 September 2009 (UTC)
replies: text:  I have collected much data and intend to proced as described here (no objections it seems). However, I will use a 15 year base period (1995 - 2009), as this gives more robust average for the frost-free season (against the odd year) and it also will include some "cold" years in the 90s (it also gave me more work). I have not had time to to this for all stations, but have prepared Oslo/Blindern, Lillehammer, Bergen/Florida, Trondheim/Værnes, Bardufoss and Tromsø (the meteorogical institute, also located in the city at 100 m). All data are from met.no, retro.met.no  (fastest, but only goes back to 2000) and eKlima. The data has revealed that even when the statistical 24-hr temperature is the same (say 5 Celsius), the inland valleys are more prone to frost nights due to larger diurnal temperature variations (they still are lush, as the northern/boreal plants are adapted to a shorter growing season). I seems that coastal areas have average frost-free seasons approximately as long as the season with 24-hr temperature at least 5 Centigrades. There are substantial local variation in the frost-free season due to the Norwegian topography with valleys and especially due to the ice-free fjords. Cold air, typically on a calm, clear night, will become denser and thus heavier and will flow towards lower terrain in the area. Inland valleys are often naturally frost hollows, so the valley floor can see a frost night, while the hillside does not. The sea and ice-free fjords have seawater that are comparatively warmer, so the areas near the fjords have some natural protection against frost nights in late spring or early autumn, which tend to be the time of year when frost nights can do damage to the plants, as they might be in an active growing phase (and not dormant as in winter). Cold air flowing down to the fjords, will meet the warmer water and warm up. Most lakes in Norway are far too small to have such an effect (and freeze over in winter in most areas), so these can be frost hollows. Slopes in general, and particularly when sloping towards fjords/the sea, are less prone to overnight frost in late spring and early atumn. This effect is even stronger at the outer seabord. As a sidenote: Warmth loving plants in Norway near their northern climatic border tend to grow on the northern shore of the fjords (Norways fjords mainly go east - west) because: 1 The fjords are more sheltered and thus have warmer summer days than the outer seabord (there are som sheltered slopes near the outer seabord as well); 2 On the northern shore they will face south towards the daytime sun, and 3 the seawater in the fjords usually saves them from late spring and early autumn frost, and keep winters from getting too cold. The size of the fjords matter, as a wide and deep fjord with a large volume of water will keep warm better throughout the winter, while the much smaller, shallower inner fjord branches cannot keep warm quite as long and might freeze some winters (winter temperatures are milder than inland though). Orcaborealis (talk) 19:16, 13 September 2009 (UTC)

text: Florida is a local name (area) in Bergen, Norway, and is the location of the Bergen office (Værvarslinga for Vestlandet) of the Norwegian Meteorological Institute. Just to be clear, it has nothing to do with the US State of Florida. Orcaborealis (talk) 19:12, 19 September 2012 (UTC)
thread_title:  Growing season and frost-free season 

message: Should the large Exclusive Economic Zone be added to article? I think it should be mentioned. Norway controls a sea area many times larger (7 times larger? must check this) than the land area, and has sea borders with Russia (disputed border!), Greenland, Iceland (the latter two due to Jan Mayen zone), UK, Germany, Denmark and Sweden. Orcaborealis (talk) 14:07, 3 October 2009 (UTC)
thread_title:  EEZ 

message: As Norway has extreme seasonal changes wrt daylight hours compared to almost all other countries, a table showing sunrise and sunset might be of interest. What do you think of this suggestion? 
Ok my suggestion seems ok, I will insert this table in article. Orcaborealis (talk) 13:57, 22 January 2011 (UTC)
thread_title:  Sunrise & sunset table 

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