Influence of the vertical mixing parameterization on the modeling results of the Arctic Ocean hydrology

D. F. Iakshina, E. N. Golubeva

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

The vertical distribution of the hydrological characteristics in the upper ocean layer is mostly formed under the influence of turbulent and convective mixing, which are not resolved in the system of equations for large-scale ocean. Therefore it is necessary to include additional parameterizations of these processes into the numerical models. In this paper we carry out a comparative analysis of the different vertical mixing parameterizations in simulations of climatic variability of the Arctic water and sea ice circulation. The 3D regional numerical model for the Arctic and North Atlantic developed in the ICMMG SB RAS (Institute of Computational Mathematics and Mathematical Geophysics of the Siberian Branch of the Russian Academy of Science) and package GOTM (General Ocean Turbulence Model1,2, http://www.gotm.net/) were used as the numerical instruments. NCEP/NCAR reanalysis data were used for determination of the surface fluxes related to ice and ocean. The next turbulence closure schemes were used for the vertical mixing parameterizations: 1) Integration scheme based on the Richardson criteria (RI); 2) Second-order scheme TKE with coefficients Canuto-A3 (CANUTO); 3) First-order scheme TKE with coefficients Schumann and Gerz4 (TKE-1); 4) Scheme KPP5 (KPP). In addition we investigated some important characteristics of the Arctic Ocean state including the intensity of Atlantic water inflow, ice cover state and fresh water content in Beaufort Sea.

Original languageEnglish
Title of host publication23rd International Symposium on Atmospheric and Ocean Optics
Subtitle of host publicationAtmospheric Physics
EditorsGG Matvienko, OA Romanovskii
PublisherSPIE
Number of pages8
Volume10466
ISBN (Electronic)9781510614130
ISBN (Print)978-1-5106-1413-0
DOIs
Publication statusPublished - 1 Jan 2017
Event23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics - Irkutsk, Russian Federation
Duration: 3 Jul 20177 Jul 2017

Publication series

NameProceedings of SPIE
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Volume10466
ISSN (Print)0277-786X

Conference

Conference23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
CountryRussian Federation
CityIrkutsk
Period03.07.201707.07.2017

Keywords

  • Arctic Ocean modeling
  • Atlantic water inflow
  • fresh water content
  • sea ice
  • vertical mixing parameterization
  • SEA-ICE
  • ADVECTION
  • CLOSURE-MODEL
  • TURBULENCE
  • LAYER

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