Sensitivity of meridional circulation and ozone fluxes to orographic gravity wave effects and QBO phases in the middle atmosphere

Андрей Владиславович Коваль, Николай Михайлович Гаврилов, Александр Иванович Погорельцев, Елена Николаевна Савенкова

Research output: Contribution to journalMeeting Abstractpeer-review

Abstract

Many atmospheric models have large biases in predicting meridional and vertical winds and fluxes of gas species in remote regions such as the middle and upper atmosphere. In this study, we make sensitivity simulations to recognize the role of vital processes associated with dynamical coupling between different atmospheric layers, namely dynamical and thermal impacts of mesoscale orographic gravity waves (OGWs) generated by the Earth’s topography and changes from the easterly to westerly QBO phases in the lower equatorial atmosphere. We improved parameterizations of OGW dynamical and thermal effects and QBO flows, and implemented them into a general circulation model of the middle and upper atmosphere. We use ten-year average meteorological information and three-dimensional ozone distribution, which is a combination of three semiempirical models of ozone mixing ratio to focus on the sensitivity of meridional circulation and vertical velocity to stationary OGWs and to changes in QBO phases at altitudes up to 10
Original languageEnglish
Pages (from-to)447
JournalGeophysical Research Abstracts
Volume17
Issue numberEGU2015
StatePublished - Apr 2015
EventEuropean Geosciences Union General Assembly 2015 - Vienna, Austria
Duration: 11 Apr 201516 Apr 2015
http://egu2015.eu/

Keywords

  • атмосфера
  • тропосфера
  • стратосферы
  • планетарные волны
  • орографические волны
  • квазидвухлетние колебания

Fingerprint

Dive into the research topics of 'Sensitivity of meridional circulation and ozone fluxes to orographic gravity wave effects and QBO phases in the middle atmosphere'. Together they form a unique fingerprint.

Cite this