статья в журнале

Ru

Sovremennye Problemy Distantsionnogo Zondirovaniya Zemli iz Kosmosa

ISSN:20707401
eSSN:2070-7401

2023

10.21046/2070-7401-2023-20-2-262-272

LOLEHU

We study the reaction of the Black Sea upper layer to the sharp intensification of the surface wind near the Caucasian coast during Novorossiysk bora in 20-22 August 2005. This case is studied using coupled mesoscale air-sea model NOW (NEMO - Nucleus for European Modelling of the Ocean, OASIS - Ocean Atmosphere Sea Ice Soil, WRF - Weather Research and Forecasting) with spatial resolution of 1 km. Modelling results are compared with the available observation data. Vertical structure of wind and temperature fields of the bora is studied. Using modelling results, we consider various reasons for the significant, more than 6 °C, drop of the sea surface temperature (SST) near Novorossiysk during 20-22 August. We consider various factors of the SST decrease, such as: vertical turbulent mixing and the entrainment of cold water from the thermocline into the upper quasihomogenous layer; ascend of cold water from lower levels and horizontal advection of water; latent and sensible heat fluxes from the sea surface. It is concluded, that the main reason for the SST decrease was dynamical instability in the sea upper layer, whereas temperature advection and sea-atmosphere heat exchange did not play an important role. © 2023 Space Research Institute of the Russian Academy of Sciences. All rights reserved.

coupled mesoscale modelling, Novorossiysk bora

2023-08-02 11:00:12