Age and renewal time of water masses in a semi-enclosed basin – application to the Gulf of Finland

Oleg Andrejev; Kai Myrberg; Peter A. Lundberg

doi:10.3402/tellusa.v56i5.14435

Age and renewal time of water masses in a semi-enclosed basin – application to the Gulf of Finland

Tellus

Volume 56 (2004): Issue 5

By: Oleg Andrejev, Kai Myrberg and Peter A. Lundberg

Open Access

|Jan 2004

Abstract

To estimate the water-renewal time of the Gulf of Finland, a numerical-model simulation comprising the years 1987 — 1992 was carried out for realistic meteorological forcing. The results concerning water age as well as renewal index proved to reflect properties of the mean circulation system. The highest water ages (of around 2 yr) were found in the south-eastern part of the Gulf. The water-age distribution after the 5-yr simulation proved to be almost identical to that obtained after 3 yr, indicating that the circulation in the Gulf may be rather stable. The analysis of the renewal-index results showed that it takes around 5 yr to renew 98% of the water masses of the Gulf. When local maxima of the renewal index are found in conjunction with high water ages, this may indicate that the region is particularly vulnerable to eutrophication.

References

Alenius , P. , Myrberg , K. and Nekrasov , A. 1998 . The physical oceanography of the Gulf of Finland: a review . Boreal Env. Res . 3 , 97 – 125 .
Search in Google Scholar Back to article
Andrejev , O. and Sokolov , A. 1989 . Numerical modelling of the water dynamics and passive pollutant transport in the Neva inlet. Meteorologia i Hydrologia . 12 , 75 – 85 ( in Russian ).
Search in Google Scholar Back to article
Andrejev , O. , Myrberg , K. , Mällcici , P. and Perttilä , M. 2002 . Three-dimensional modelling of the main Baltic inflow in 1993 . Env. Chem. Phys . 24 , 121 – 126 .
Search in Google Scholar Back to article
Andrejev , O. , Myrberg , K. , Alenius , P. and Lundberg , P. A. 2004 . Mean circulation and water exchange in the Gulf of Finland - a study based on three-dimensional modeling . Boreal Env. Res . 9 , 1 – 16 .
Search in Google Scholar Back to article
Bergström , S. and Carlsson , B. 1994 . River runoff to the Baltic Sea: 1950–1970 . Ambio . 23 , 280 – 287 .
Search in Google Scholar Back to article
Bolin , B. and Rodhe , H. 1973 . A note on the concepts of age distribution and transit term in natural reservoirs . Tellus . 25 , 58 – 62 .
Search in Google Scholar Back to article
Bumke , K. , Karger , U. , Hasse , U. and Nielcamp , K. 1998 . Evaporation over the Baltic Sea as an example of a semi-enclosed sea . Contr Atmos. Phys . 71 , 249 – 261 .
Search in Google Scholar Back to article
Bunker , J. 1977 . Computations of surface energy flux and annual air-sea interaction cycle of the North Atlantic. Mon. Wea. Re v . 105 , 33 – 65 .
Search in Google Scholar Back to article
Deleersnijder , E. , Campin , J.-M. and Delhez , E. J. M. 2001 . The concept of age in marine modelling. Theory and preliminary model results . J. Mar Syst . 28 , 229 – 267 .
Search in Google Scholar Back to article
Delhez , E. J. M. , Campin , J.-M. , Hirst , A. and Deleersnijder , E. 1999 . Toward a general theory of the age in ocean modelling . Ocean Modelling . 1 , 17 – 27 .
Search in Google Scholar Back to article
England , M. H. 1995 . The age of water and ventilation timescales in a global ocean model . J. Phys. Oceanogr . 25 , 2756 – 2777 .
Search in Google Scholar Back to article
Engqvist , A. 1996 . Long-term nutrient budgets in the eutrophication of Himmerfarden estuary. Est . Coast. Shelf Sc i . 42 , 483 – 507 .
Search in Google Scholar Back to article
Engqvist , A. and Andrejev , O. 2003 . Water exchange of the Stockholm archipelago - a cascade framework modeling approach . J. Sea Res . 49 , 275 – 294 .
Search in Google Scholar Back to article
Knudsen , M. 1900 . Ein hydrographischer Lehrsatz . Annalen der Hydrographie und Maritimen Meteorologie . 28 , 316 – 320 .
Search in Google Scholar Back to article
Kochergin , V. 1987 . Three-dimensional prognostic models. In: Three-Dimensional Coastal Ocean Models Volume4 (ed. N. S. Heaps). Coastal Estuarine Science Series, 201 - 208 .
Search in Google Scholar Back to article
Lane , A. and Prandle , D. 1996 . Inter-annual variability in the temperature of the North Sea . Cont. Shelf Res . 16 , 1489 – 1507 .
Search in Google Scholar Back to article
Lehmann , A. and Hinrichsen , H.-H. 2000 . On the thermohaline variability of the Baltic Sea . J. Mar Syst . 25 , 333 – 357 .
Search in Google Scholar Back to article
Lehmann , A. , Krauss , W. and Hinrichsen , H.-H. 2002 . Effects of remote and local atmospheric forcing on circulation and upwelling in the Baltic Sea . Tellus . 54A , 299 – 316 .
Search in Google Scholar Back to article
Lyalchin , Ju. A. , Makarova , S. V , Maximov , A. A. , Savchuk , O. P. and Silina , N. I. 1997 . A state of ecosystem in the eastern part of Gulf of Finland in July 1996. In: “Baltica” Project. Issue 5. Part 2. Ecosystem models. Assessment of the modern state of the Gulf of Finland . (eds I. N. Davidan , and O. O. Savchuk ). Gidrometeoizdat, St Petersburg , 416 - 434 .
Search in Google Scholar Back to article
Mikhailov , A. E. and Chernyshova , E. S. 1997 . General water circulation. In: “Bcdtica” Project. Issue 5. Part 2. Ecosystem models. Assessment of the modern state of the Gulf of Finland . (eds I. N. Davidan , and O. P. Savchuk ). Gidrometeoizdat, St Petersburg , 245 - 260 .
Search in Google Scholar Back to article
Mutzke , A. 1998 . Open boundary condition in the GFDL-model with free surface . Ocean Modelling . 116 , 2 – 6 .
Search in Google Scholar Back to article
Myrberg , K. and Andrejev , O. 2003 . Main upwelling regions in the Baltic Sea - a statistical analysis based on three-dimensional modelling . Boreal Env. Res . 8 , 97 – 112 .
Search in Google Scholar Back to article
Niiler , P. and Kraus , E. 1977 . One-dimensional models of the upper ocean . In: Modelling and Prediction of the Upper Layers of the Ocean (ed. E. Kraus). Pergamon Press , Oxford , 143 – 172 .
Search in Google Scholar Back to article
Omstedt , A. , Meuller , L. and Nyberg , L. 1997 . Interannual, seasonal and regional variations of precipitation and evaporation over the Baltic Sea . Ambio . 26 , 484 – 492 .
Search in Google Scholar Back to article
Omstedt , A. , Gustafsson , B. , Rodhe , J. and Walin , G. 2000 . Use of Baltic Sea modelling to investigate the water cycle and the heat balance in GCM and regional climate models . Climate Res . 15 , 95 – 108 .
Search in Google Scholar Back to article
Orlanski , I. 1976 . A simple boundary condition for unbounded hyperbolic flows . J. Comput. Phys . 21 , 251 – 269 .
Search in Google Scholar Back to article
Palmén , E. 1930 . Untersuchungen iiber die Striimungen in den Finnland umgebenden Meeren. Comm. Phys.-Math . 12. Societas Scientarium Fennica, Helsink i , 94 pp.
Search in Google Scholar Back to article
Sarkkula , J. 1991 . Measuring and Modelling Water Currents and Quality as a Part of Decision Making for Water Pollution Control . PhD Thesis. Tartu University , Estonia , 49 pp.
Search in Google Scholar Back to article
Seifert , T. and Kayser , B. 1995 . A high resolution spherical grid topography of the Baltic Sea . Meereswissenschaftliche Berichte 9, Institute far Ostseeforschnung , Warnemiinde , Germany .
Search in Google Scholar Back to article
Sokolov , A. , Andrejev , O. , Wulff , F. and Rodriguez Medina , M. 1997 . The data assimilation system for data analysis in the Baltic Sea. System Ecology Contributions No. 3, Stockholm University, Sweden, 66 pp.
Search in Google Scholar Back to article
Stauffeur , D. and Bao , J.-W. 1993 . Optimal determination of nudging coefficients using the adjoint equations . Tellus 45A , 358 – 369 .
Search in Google Scholar Back to article
Stigebrandt , A. and Wulff , F. 1987 . A model for the dynamics of nutrients and oxygen in the Baltic proper . J. Mar Res . 45 , 729 – 759 .
Search in Google Scholar Back to article
Stipa , T. 2004 . On baroclinic neutrality in the Finnish Coastal Current . Tellus . 56A , 79 – 87 .
Search in Google Scholar Back to article
Thiele , G. and Sarmiento , J. L. 1990 . Tracer dating and ocean ventilation . J. Geophys. Res . 95 ( C6 ), 9377 – 9391 .
Search in Google Scholar Back to article
Witting , R. 1912 . Zusammenfassende übersicht der Hydrographie des Bottnischen und Finnischen Meerbusens und der Niirdlichen Ostsee. Finnlands Hydrographisch-Biologische Untersuchungen No. 7, Helsinki, Finland.
Search in Google Scholar Back to article
Wulff , F. and Rahm , L. 1991 . A database and its tools. In: Large-Scale Environmental Effects and Ecological Processes in the Baltic Sea, Chapter 13 (ed. F. Wulff). Research programme for the period 1990–95 and background documents . SNV Report 3856 , 217 – 225 .
Search in Google Scholar Back to article

Articles in this issue

DOI: https://doi.org/10.3402/tellusa.v56i5.14435 | Journal eISSN: 3035-9554

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Language: English

Page range: 548 - 558

Submitted on: May 5, 2003

Accepted on: Mar 1, 2004

Published on: Jan 1, 2004

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 2004 Oleg Andrejev, Kai Myrberg, Peter A. Lundberg, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 56 (2004): Issue 5