Dmi long term instrumental data series from greenland
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DMI long-term instrumental data series from Greenland. FreshNor Workshop SHMI 18-19 October 2007 John Cappelen. If we want to know, if we change the climate, then we must know, to which extend it changes by itself. That it one of the reasons for the great value of the old climate data.

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Dmi long term instrumental data series from greenland l.jpg

DMI long-term instrumental data series from Greenland

FreshNor Workshop

SHMI 18-19 October 2007

John Cappelen


Slide2 l.jpg

If we want to know, if we change the climate, then we must know, to which extend it changes by itself. That it one of the reasons for the great value of the old climate data.


From 1856 there are reliable global observations l.jpg

From 1856 there are reliable global observations. know, to which extend it changes by itself.


What about greenland l.jpg

The foundation of The Danish Meteorological Institute in 1872 marked the beginning of the official instrumental meteorological series i Greenland.

From 1873-1983 yearbooks have been produced with varying contents and size.

What about Greenland?

From app. 1958 digitised observations exist in the climate databases at DMI.

Observer Guldager by his instruments. Jacobshavn 1923


Before 1873 l.jpg

1760’s marked the beginning of systematic observations in Greenland….

Before 1873?

From 1784 a composite SW Greenland temperature series is processed….not least because of H.H. Lamb.

Composed of series from Qaqortoq, Nuuk and Ilulissat.

Source: Vinther, B. M., K. K. Andersen, P. D. Jones, K. R. Briffa and J. Cappelen (2006): Extending Greenland Temperature Records into the late 18th Century. J. Geophys. Res. 111, D11105, doi:10.1029/2005JD006810, 2006

Link: http://www.cru.uea.ac.uk/cru/data/greenland/


Back to the time after 1872 l.jpg

Continuously updated series of annually temperatures from 1873 from seven localitions.

Back to the time after 1872…

The series have been quality checked the best way possible including the processing of NACD - North Atlantic Climatological Dataset 1890-1990.

Source: John Cappelen (2007):

DMI Annual Climate Data Collection 1873-2006, Denmark, The Faroe Islands and Greenland - with graphics and danish summary.

DMI Technical Report 07-05.

Link:

http://www.dmi.dk/dmi/tr07-05.pdf

http://www.dmi.dk/dmi/tr07-05_data.zip

http://www.dmi.dk/dmi/tr07-05_grafik.zip


Long term monthly series from 1873 l.jpg

Continuously updated…. 1873 from seven localitions.

Long-term monthly series from 1873

Source: John Cappelen et al. (2007):DMI monthly Climate Data Collection 1768-2006, Denmark, The Faroe Islands and Greenland.

DMI Technical Report No. 07-06.

Link:

http://www.dmi.dk/dmi/tr07-06.pdf

http://www.dmi.dk/dmi/tr07-06.zip


Long term daily series from 1873 l.jpg

Continuously updated…. 1873 from seven localitions.

Long-term daily series from 1873

+ observations of atmospheric air pressure (msl)

(WASA data sets)

Tasiilaq

Max. og min. temperatures

Precipitation

Tasiilaq and Ilulissat

Source: John Cappelen et al. (2007):DMI Daily Climate Data Collection 1873-2006, Denmark, The Faroe Islands and Greenland - including Air Pressure Observations 1874-2006 (WASA Data Sets).

DMI Technical Report No. 07-07.

Link:

http://www.dmi.dk/dmi/tr07-07.pdf

http://www.dmi.dk/dmi/tr07-07_data.zip


The climate of greenland l.jpg

Monthly time series 1958-1999 1873 from seven localitions.

and Climatological Standard Normals 1961-90

The Climate of Greenland

  • A large number of stations

  • Many parameters

  • Descriptions of the Climate in text

Source: John Cappelen et al.(2000):The Observed Climate of Greenland, 1958-99 - with Climatological Standard Normals, 1961-90. DMI Technical Report No. 00-18.

Link:

http://www.dmi.dk/dmi/tr00-18.pdf

http://www.dmi.dk/dmi/tr00-18-data_files.zip

http://www.dmi.dk/dmi/tr00-18-wind_roses.zip


A guide to dmi climate data exist l.jpg

Besides data open to the public data and services are available for money.

DMI provides free (besides delivery costs) and unrestricted access to meteorological data and products for educational and research purposes, if some conditions are met.

A guide to DMI climate data exist…

Source: John Cappelen, Claus Kern-Hansen and Kim Sarup:Guide to Climate Data and Information from the Danish Meteorological Institute – updated September 2007.

DMI Technical Report No. 07-10.

Link:

http://www.dmi.dk/dmi/tr07-10.pdf


The end thank you for your attention l.jpg

The End – available for money.Thank you for your attention

Thermometer og raingauge arrangement July 1923 in Jacobshavn, Greenland


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