Abstract
Early measurements of pCO2 in the surface waters of the Baltic Sea clearly pointed to biological production as the major controlling factor underlying the seasonality of the pCO2. However the temporal resolution of the measurements was too low to allow reasonable quantitative conclusions regarding biological production. This problem was overcome in 2003, when a fully automated measurement system that continuously recorded the surface-water pCO2 was deployed on a cargo ship. The ship commuted at regular intervals of 2–3 days between the southwest Baltic Sea (Lübeck) and the western Gulf of Finland (Helsinki) and thus traversed the entire Baltic Proper. Between 2003 and 2015, pCO2 data for 1600 transects were obtained. Investigations of CO2 accumulation in deep water also started in 2003, in conjunction with IOW’s long-term observation program. The measurements were confined to a central station in the eastern Gotland Basin and were made four to five times per year. The vertical resolution of the data with respect to total CO2 and the accompanying variables, such as nutrient and oxygen/H2S concentrations, was 25 m.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Johnson KM, Wills KD, Buttler DB, Johnson WK, Wong CS (1993) Coulometric total carbon dioxide analysis for marine studies: maximizing the performance of an automated gas extraction system and coulometric detector. Mar Chem 44:167–187
Schneider B, Nausch G, Nagel K, Wasmund N (2003) The surface water CO2 budget for the Baltic Proper: a new way to determine nitrogen fixation. J Mar Syst 42:53–64
Schneider B, Kaitala S, Maunula P (2006) Identification and quantification of plankton bloom events in the Baltic Sea by continuous CO2 partial pressure Partial pressure and Chlorophyll achlorophyll a measurements on a cargo ship. J Mar Syst 59:238–248
Schneider B, Nausch G, Pohl C (2010) Mineralization of organic matter and nitrogen transformations in the Gotland Sea deep water. Mar Chem 119:153–161
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2018 Springer International Publishing AG
About this chapter
Cite this chapter
Schneider, B., Müller, J.D. (2018). The Database. In: Biogeochemical Transformations in the Baltic Sea. Springer Oceanography. Springer, Cham. https://doi.org/10.1007/978-3-319-61699-5_4
Download citation
DOI: https://doi.org/10.1007/978-3-319-61699-5_4
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-61698-8
Online ISBN: 978-3-319-61699-5
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)