The importance of ship log data: reconstructing North Atlantic, European and Mediterranean sea level pressure fields back to 1750

Küttel, Marcel; Xoplaki, Elena; Gallego, D.; Luterbacher, Jürg; Garcia-Herrera, Ricardo; Jones, Phil; Wheeler, D.; Wanner, Heinz (2010). The importance of ship log data: reconstructing North Atlantic, European and Mediterranean sea level pressure fields back to 1750. Climate dynamics, 34(7-8), pp. 1115-1128. Heidelberg: Springer-Verlag 10.1007/s00382-009-0577-9

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Local to regional climate anomalies are to a large extent determined by the state of the atmospheric circulation. The knowledge of large-scale sea level pressure (SLP) variations in former times is therefore crucial when addressing past climate changes across Europe and the Mediterranean. However, currently available SLP reconstructions lack data from the ocean, particularly in the pre-1850 period. Here we present a new statistically-derived 5° × 5° resolved gridded seasonal SLP dataset covering the eastern North Atlantic, Europe and the Mediterranean area (40°W–50°E; 20°N–70°N) back to 1750 using terrestrial instrumental pressure series and marine wind information from ship logbooks. For the period 1750–1850, the new SLP reconstruction provides a more accurate representation of the strength of the winter westerlies as well as the location and variability of the Azores High than currently available multiproxy pressure field reconstructions. These findings strongly support the potential of ship logbooks as an important source to determine past circulation variations especially for the pre-1850 period. This new dataset can be further used for dynamical studies relating large-scale atmospheric circulation to temperature and precipitation variability over the Mediterranean and Eurasia, for the comparison with outputs from GCMs as well as for detection and attribution studies.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geography > Physical Geography > Unit Climatology
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Institute of Geography

UniBE Contributor:

Küttel, Marcel; Xoplaki, Eleni and Wanner, Heinz

ISSN:

0930-7575

Publisher:

Springer-Verlag

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:20

Last Modified:

23 Oct 2019 16:28

Publisher DOI:

10.1007/s00382-009-0577-9

Web of Science ID:

000278088400012

BORIS DOI:

10.7892/boris.6436

URI:

https://boris.unibe.ch/id/eprint/6436 (FactScience: 211400)

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