CLIMATIC MATTERS

Brian Gunter, Narooma, NSW, Australia    http://members.westnet.com.au/brigun/godthab_temp.html

"The art of prophecy is very difficult, especially about the future." - Mark Twain

 

 

 

 

 

GODTHAB / NUUK (GREENLAND)

SEASONAL MEAN TEMPERATURES 1866-2010  

 

GODTHAB NUUK (GREENLAND (DENMARK))
Coordinates: 64.17N, -51.75E, 70m (prob: 0m)
WMO station code: 4250
Rural station
Terrain: mountain valley TUNDRA
Station is located at 1km from coast
Found 145 years with data in 1866-2010 (mean temperature)

Data Source:  http://climexp.knmi.nl/click_s.cgi?someone@somewhere?monthly?144,28

Adopted Seasons:             Summer:  June-August             Winter: December-March                 Annual: January-December

COMMENTS:

-  Nuuk (known as Godthab by the Danes) is the capital city of Greenland.  It is located on the coast of southwestern Greenland and has a population of 15,500.

-  Temperature records commenced there in 1866 and are almost complete since then.

-  The data was obtained from the website of KNMI, the Royal Netherlands Meteorological Institute, and is raw data without any adjustments being made.

-  The location is free of any urban or major industrial influences.

-  The station is stated as being located 1 km from the coast and is therefore (hopefully) free from local heat sources or sheltering.

-  The summer (June-August) temperatures are stable over the 145-year period, except for about 1930-1960 when they were about 2 deg C higher.

-  The winter (December-March) temperatures are much more variable than during summer but are also stable over the 145-year period, except for about 1930-1960 when they were also about 2 deg C higher.  

-  The annual temperatures show a similar zero trend except for being about 2 deg C higher for about 1930-1960.

-  Was there a change in the station location/exposure between 1930 and 1960?  I don't think so as the same pattern is evident at other locations in Greenland and Iceland!!

-  Note that the summer temperatures (when snow- and ice-melt occurs), apart for an increase of about 2 deg C between 1930 and 1960, was quite constant over the past 145 years.  But the media/literature indicates that glacial retreat in Greenland has commenced only recently (in the past decade).     Any thoughts on this?

-  A brief examination of other temperature records in Greenland and Iceland (see plots below) indicates that the higher temperatures during the 1930-1960 period were general over the region.  So it was not some error in the recordings.  This is very interesting and deserves further attention by me - and you!

 

Nuuk, Greenland

 

LONG-RECORD RURAL STATIONS IN GREENLAND AND ICELAND

PLOTS OF MINIMUM (WINTER) MONTHLY MEAN AND MAXIMUM (SUMMER) MONTHLY MEAN TEMPERATURES AND ANNUAL MEAN TEMPERATURES

GODTHAB / NUUK (GREENLAND), coordinates: 64.17N, -51.75E

 

 

JAKOBSHAVN (GREENLAND), coordinates: 69.25N, -51.07E

 

 

UPERNAVIK (GREENLAND), coordinates: 72.78N, -56.17E


 

ANGMAGSSALIK (GREENLAND), coordinates: 65.60N, -37.63E

 

STYKKISHOLMUR (ICELAND), coordinates: 65.08N, -22.73E


 

AKUREYRI (ICELAND), coordinates: 65.68N, -18.08E

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The Author:

This article was written by Brian Gunter of Narooma (NSW, Australia).  In his previous life Brian lived in Cooma and was an engineering hydrologist involved over many years in the analysis of rainfall and river flow data for the planning of water resources projects in Australia, Asia and Africa.  In recent years he has been one of the Marine Rescue NSW (formerly the Royal Volunteer Coastal Patrol) volunteer weather observers who operate the Narooma station for the Bureau of Meteorology.

 

Brian Gunter

brigun@westnet.com.au

Prepared:  6 September 2010

Updated:  17 July 2011