ARKTIS 1991 - Cellular Convection over the Norwegian Sea


Kruspe, Gottfried et al.

The field experiment ARKTIS 1991 was an expedition planned by meteorologists of the Collaborative Research Centre 318 entitled "Climatically relevant processes in the system ocean-atmosphere-ice" which is funded by the German Research Foundation and established at the University of Hamburg. The expedition took place in the Norwegian Sea between Northern Norway, Bear Island and Jan Mayen during the period 17 February until 15 March 1991.

The main aim of the experiment was the investigation of cold air outbreaks from the surrounding Arctic ice sheets. During such weather episodes the air mass coming from the ice is rapidly modified over the water due to the contrasts in temperature, heat conduction, humidity and roughness between ice and water. This leads to the formation of a "new" boundary layer. Its depth, mean temperature and moisture increases with increasing distance from the ice edge mainly due to sensible and latent heat supply from the ocean.

The investigations of cold air outbreaks and Arctic stratus by scientists of the Collaborative Research Centre 318 began already three years before with the field experiment ARKTIS 1988 which took place in the area west of Spitsbergen in May 1988. ARKTIS 1991 is a continuation of this work under winterly weather conditions. ARKTIS 1991 was followed by the experiment ARKTIS 1993.

As in ARKTIS 1988 the research vessel Valdivia and the two research aircraft FALCON-20 of the DLR at Oberpfaffenhofen and DO-128 of the TU Braunschweig were at our disposal. Radiosonde measurements were performed on board of RV Valdivia and on Bear Island.
UNI_HH_MI_fielddata (Field Data of the Meteorological Institute, University of Hamburg)
Dr. Gerd Müller (
Norwegian Sea
Spatial Coverage
Longitude 3 to 22 Latitude 69 to 75
Temporal Coverage
1991-02-17 to 1991-03-15 (calendrical)
Use constraints
For scientific use only
Data Catalog
World Data Center for Climate
4.98 MiB (5222400 Byte)
completely archived
Creation Date
Cite as
Kruspe, Gottfried; Brümmer, Burghard; Müller, Gerd; Wetzel, Christian (2012). ARKTIS 1991 - Cellular Convection over the Norwegian Sea: radiosoundings at the research vessel Valdivia and station Bear Island. World Data Center for Climate (WDCC) at DKRZ.

[Entry acronym: UNI_HH_MI_ARKTIS1991] [Entry id: 2250976]
observation: Level2c
All presented data is observational. Accuracy and precision are dependent on sensors and platforms. Details to sensor types, error sources and quality checking are given in Additional Information accompanying each dataset.;All datasets passed several quality checks. Quality control took place during the field phase; data were controlled during their use for research and and again before publishing.
Data were processed with objective algorithms (e.g. to reject values out of range) and were controlled subjectively by experienced researchers. The processing is described in detail in the documentation of each dataset.
Data acquisition is completed.
Result Date
1. Number of data sets is correct and > 0: passed;
2. Size of every data set is > 0: passed;
3. The data sets and corresponding metadata are accessible: passed;
4. The data sizes are controlled and correct: passed;
6. The format is correct: passed;
7. Variable description and data are consistent: passed
WDCC-TQA checklist
Method Description
Checks performed by WDCC. The list of TQA metrics are documented in the 'WDCC User Guide for Data Publication' Chapter 8.1.1
Method Url
Result Date
Contact typePersonORCIDInstitute
Contact Dr. Gerd Müller-University of Hamburg (MI)
Author Gottfried Kruspe-Max-Planck-Institut fuer Meteorologie
Author Prof. Dr. Burghard Brümmer-University of Hamburg (MI)
Author Dr. Gerd Müller-University of Hamburg (MI)
Author Christian Wetzel-University of Hamburg (MI)
Principal Investigator Prof. Dr. Burghard Brümmer-University of Hamburg (MI)
Originator Dr. Gerd Müller-University of Hamburg (MI)
Technical Gottfried Kruspe-University of Hamburg (MI)
Contributor --Max-Planck-Institut fuer Meteorologie
Contributor --University of Hamburg (MI)
Metadata Christian Wetzel-University of Hamburg (MI)

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