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Bärring, L., Jonsson, P., Achberger, C., Ekstrom, M. & Alexandersson, H. (1999). The Lund instrumental record of meteorological observations: Reconstruction of monthly sea-level pressure 1780-1997. International Journal of Climatology, 19(13), 1427-1443
Open this publication in new window or tab >>The Lund instrumental record of meteorological observations: Reconstruction of monthly sea-level pressure 1780-1997
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1999 (English)In: International Journal of Climatology, ISSN 0899-8418, E-ISSN 1097-0088, Vol. 19, no 13, p. 1427-1443Article in journal (Refereed) Published
Abstract [en]

The reconstructed surface air pressure series from Lund, southern Sweden, covers the period 1780-1997 and comprises mon than 234000 valid observations (three observations per day), i.e. > 98% of all possible observation occasions. For the Early Instrumental Period (EIP; 1780-1860) data were digitised from the original records. For most of the Modern Instrumental Period (MIP; 1861-) a series was compiled from various databases containing instrument corrected data. During EIP, the series of raw monthly means show several substantial inhomogeneities. With the aid of a detailed reconstruction of the station history, it was possible to remove almost all inhomogeneities during EIP by applying the correct instrument corrections (for barometer temperature, to standard gravity and to mean sea-level pressure) to the series of original observations. In particular, corrections for the temperature and altitude of the barometer eliminated several inhomogeneities. A prerequisite for applying these corrections is the availability of high-resolution data (actual raw observations or daily averages). Further homogenisation was attained by intercomparison of the monthly mean pressure with acknowledged homogeneous series (mainly the UKMO monthly grid, station records from Copenhagen and Edinburgh). Statistical tests of homogeneity showed that no substantial inhomogeneities remain in the final version. The modern part of the final monthly pressure series largely follows that of the southern Baltic Sea region. Furthermore, it shows relatively high pressure during spring (MAM) in the period 1780-1820, which was paralleled by severe wind erosion in southern Scandinavia during this time. Relatively high pressure throughout the year is also notable during a period of precipitation deficit in 1970s. Copyright (C) 1999 Royal Meteorological Society.

Sweden, Scandinavia, early instrumental period, EIP, modern instrumental period, MIP, climate reconstruction, long series, instrument correction, homogenisation, air pressure, sea-level pressure, SLP
National Category
Climate Research
Research subject
urn:nbn:se:smhi:diva-1531 (URN)000083712300003 ()
Available from: 2015-09-07 Created: 2015-08-31 Last updated: 2017-12-04Bibliographically approved

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