TY - JOUR

T1 - Sensitivity of meridional circulation and ozone fluxes to orographic gravity wave effects and QBO phases in the middle atmosphere

AU - Коваль, Андрей Владиславович

AU - Гаврилов, Николай Михайлович

AU - Погорельцев, Александр Иванович

AU - Савенкова, Елена Николаевна

PY - 2015/4

Y1 - 2015/4

N2 - 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

AB - 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

KW - атмосфера

KW - тропосфера

KW - стратосферы

KW - планетарные волны

KW - орографические волны

KW - квазидвухлетние колебания

UR - https://elibrary.ru/item.asp?id=29097203

M3 - Meeting Abstract

VL - 17

SP - 447

JO - Geophysical Research Abstracts

JF - Geophysical Research Abstracts

SN - 1029-7006

IS - EGU2015

T2 - European Geosciences Union General Assembly 2015

Y2 - 11 April 2015 through 16 April 2015

ER -