Modelling Interannual Changes in Dense Water Formation on the Northern Adriatic Shelf

Hrvoje Mihanović, Ivica Janeković, Ivica Vilibić, Vedrana Kovačević, Manuel Bensi

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The paper aims to estimate wintertime thermohaline properties and dense water formation (DWF) dynamics, rates, and transports in the northern and middle Adriatic between 2008 and 2015. The focus has also been directed to the year-to-year differences between two known DWF sites located on the northern Adriatic shelf and in the eastern coastal region. The estimates are based on a high-resolution interannual simulation by Regional Ocean Modelling System, one-way forced by the meteorological Aladin/HR operational mesoscale model, with new river climatology imposed particularly at the eastern Adriatic coast. Substantial interannual variability in wintertime bottom densities has been found, varying for more than 1.0 kg m−3 among years. Such variations are largely associated with the January–February heat losses, while atmospheric preconditioning in November–December seems to have a little effect on the DWF rates. By contrast, salinity is preconditioning the DWF in the eastern coastal site. That has been found relevant for DWF rates during extraordinary winters, as in the case of 2012. Contribution of a coastal site to the overall DWF rates in other years has not been substantial. Finally, a saw-tooth-like pattern in thermohaline time series has been found in observations and reproduced by the numerical model at the bottom of the middle Adriatic depressions.

Original languageEnglish
Pages (from-to)4065-4081
Number of pages17
JournalPure and Applied Geophysics
Volume175
Issue number11
DOIs
Publication statusPublished - 1 Nov 2018

Keywords

  • Adriatic Sea
  • High-resolution modelling
  • dense water formation
  • interannual simulation

Fingerprint Dive into the research topics of 'Modelling Interannual Changes in Dense Water Formation on the Northern Adriatic Shelf'. Together they form a unique fingerprint.

  • Cite this

    Mihanović, H., Janeković, I., Vilibić, I., Kovačević, V., & Bensi, M. (2018). Modelling Interannual Changes in Dense Water Formation on the Northern Adriatic Shelf. Pure and Applied Geophysics, 175(11), 4065-4081. https://doi.org/10.1007/s00024-018-1935-5