Article
Version 1
This version is not peer-reviewed
The Black Sea Upwelling System: A Climatological Analysis on the North-Western Shelf
Version 1
: Received: 24 July 2024 / Approved: 24 July 2024 / Online: 24 July 2024 (10:21:39 CEST)
How to cite: Mihailov, M. E. The Black Sea Upwelling System: A Climatological Analysis on the North-Western Shelf. Preprints 2024, 2024071935. https://doi.org/10.20944/preprints202407.1935.v1 Mihailov, M. E. The Black Sea Upwelling System: A Climatological Analysis on the North-Western Shelf. Preprints 2024, 2024071935. https://doi.org/10.20944/preprints202407.1935.v1
Abstract
The upwelling is due to the combined effect of the coastal divergence process and Ekman pumping. The author aims to investigate two new upwelling indices for the Black Sea, derived from climate reanalysis models and in situ data: a) the Coastal Upwelling Transport Index (CUTI that estimates the rate of vertical volume transport) and b) the Biologically Effective Upwelling Transport Index (BEUTI, that estimates the nitrate flux into the surface mixed layer). Average monthly wind by the European Centre for Medium-Range Weather Forecasts (ECMWF) and Copernicus Marine Services for the Black Sea basin is used to calculate the CUTI and BEUTI Indexes, for over 26 years (1993 - 2019) to analyse the sites along the North-Western Black Sea where changes in divergence phe-nomena occur. From 2000 to 2018, 31 divergence processes were observed based on daily in-situ data from the coastal monitoring stations, with significant predominance in late spring and early summer. Nitrate supply by coastal upwelling has been estimated by combining sea surface temperature and salinity for the in-situ data for the North-Western Black Sea shallow waters, and BEUTI indices were determined. Comparing 18 years of data results, the calculated indices and the observed upwelling events showed significant correlations.
Keywords
upwelling; coastal upwelling transport index; black sea; biologically effective upwelling transport index
Subject
Environmental and Earth Sciences, Oceanography
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment
