Variability of the oceanographic structures of the Southern Ocean by the FerryBox data
V. Komorin
- continuous observations,
- hydrological structure,
- Southern Polar Front,
- surface waters
Copyright (c) 2022 Ukrainian Antarctic Journal
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Abstract
During Antarctic summers in the 2018—2021 period, physical, chemical, and biological parameters of the upper layer of seawater were continuously recorded using the FerryBox (FB) software and measuring system installed on-board the Ukrainian krill fishing trawler F/V More Sodruzhestva. The main hydrological fronts of the South Atlantic and the Southern Ocean were crossed from Cape Town to the Antarctic Peninsula. About 800,000 one-minute FB measurements were used in this research to determine and identify marine structures. The paper aims to estimate the spatial-temporal variability of oceanographic parameters of the surface layer of water in the Southern Ocean based on the FB data analysis. We use classical methods of analysis of hydrological structures, graphical, comparative, and statistical types of analysis of the field data, as well as data from the Copernicus Marine Environment Monitoring Service (CMEMS). Trawling areas were considered as hydrological landfills. We found a decrease in the total number of front crosses: from 8.6% in the 2018—2019 season to 3.9% in the 2020—2021 season. Analysis of the quality of information obtained from the FB showed that after adjustment the measurements allow solving various oceanographic problems, such as identifying frontal zones and detailing their hydrological structure, determining surface water masses and variability of their distribution limits, highlighting significant cycles in time of the measured parameters, studying the gas component of the upper sea layer water. A comparative analysis of the results of the FB observations with the CMEMS data showed their qualitative consistency.
References
- Artаmonov, Y. V., Balakin, V. I., Neverovskij, I. P., Popov, Y. I., & Skripnik, V. V. (2000). Krupnomashtabnaya izmenchivost polya temperatury poverhnosti okeana po rezultatam poputnyh izmerenij v rejse NIS «Ernst Krenkel» (1997) [Large-scale variability of the ocean surface temperature field based on the results of accompanying measurements during the seavoyage of the NIS “Ernst Krenkel” (1997)]. Bulletin of the Ukrainian Antarctic Center, 3, 60—67. (In Russian)
- Artamonov, Ju. V., Skripaleva, E. A., Babiy, M. V., & Galko vskaya, L. K. (2009). Seasonal and interannual variability of the hydrological fronts in the Southern Ocean. Ukrainian Antarctic Journal, 8, 205—216. https://doi.org/10.33275/1727-7485.8.2009.449 (In Russian)
- Chapman, C. C. (2017). New perspectives on frontal variability in the Southern Ocean. Journal of Physical Oceanography, 47(5), 1151—1168. https://doi.org/10.1175/JPO-D-16-0222.1
- Komorin, V. M., Bolshakov, V. M., Dikhanov, Yu. M., & Melnik, E. A. (2019). Research of frontal structure of the surface layer of the South Atlantic based on the passing observations in November—December 2018. Ukrainian Antarctic Journal, 1(18), 84—92. https://doi.org/10.33275/1727-7485.1(18).2019.133 (In Ukrainian)
- Macovei, V. А., Petersen, W., Brix, H., & Voynova, Y. G. (2021). Reduced ocean carbon sink in the South and Central North Sea (2014—2018). Revealed From Ferry Box Observations. Geophysical Research Letter, 48(11), e2021GL092645. https://doi.org/10.1029/2021GL092645
- Mamaev, O. I. (1970). T,S-analiz vod Mirovogo okeana [T,S analysis of world ocean waters]. Gidrometeoizdat. (In Russian)
- Petersen, W., Reinke, S., Breitbach, G., Petschatnikov, M., Wehde, H., & Thomas, H. (2018). Ferry Box data in the North Sea from 2002 to 2005. Earth System Science Data, 10(3), 1729—1734. https://doi.org/10.5194/essd-10-1729-2018
- Privalsky, V. E. (1985). Klimaticheskaya izmenchivost: stohasticheskie modeli, predskazuemost, spektry [Climate variability: stochastic models, predictability, spectra]. Nauka. (In Russian)
- Sallée, J.-B. (2018). Southern Ocean warming. Oceanography. 31(2), 52—62. https://doi.org/10.5670/oceanog.2018.215
- Ukrainsky, V. V., Popov, Y. I., Artamonov, Y. V., & Lomakin, P. D. (2000). Frontalnyye zony i vodnyye massy na poverkh nosti yugozapadnoy Atlantiki i prilegayushchego sektora Yuzhnogo okeana [Frontal zones and water masses on the surface of the south western Atlantic and the adjacent sector of the Southern Ocean]. Bulletin Ukrainian Antarctic Centre, 3, 68—77. (In Russian)
- Voynova, Y. G., Petersen, W., Gehrung, M., Aßmann, S., & King, A. L. (2018). Intertidal regions changing coastal alkalinity: The Wadden Sea-North Sea tidally coupled bioreactor. Limnology and Oceanography, 64(3), 1135—1149. https://doi.org/10.1002/lno.11103
- Zhuk, N. N. (2011/2012). Fishery and biological aspects of Euphausia superba on its fishery grounds at the South Shetland Islands and in the Bransfield Strait in March—May, 2006. Ukrainian Antarctic Journal, 10—11, 201—211. https://doi.org/10.33275/1727-7485.10-11.2012.300 (In Russian)
- Zhuk, N. N., & Korzun, Yu.V. (2016). Fishery report of the krill cathing trawler “Cooperation Sea” on the Antarctic krill (Euphausia superba) biology and hydrometeological conditions in the fishing area of the Atlantic Antarctic during the summer—winter fishing season of 2015. Ukrainian Antarctic Journal, 15, 131—152. https://doi.org/10.33275/1727-7485.15.2016.99 (In Russian)