Abstract
Previously published meridional cross sections of monthly mean W —E and S -N wind components from 60 to 130 km are reviewed in the light of wind data obtained by ground-based radio methods over various timescales including that of the solar cycle. A mean meridional circulation in the winter hemisphere is implied in which a dominant mesospheric cell between low and high latitudes is confined to lower heights at higher latitudes: a second meridional circulation is tentatively located above the former in the lower thermosphere extending downwards to lower heights at higher latitudes and introducing the possibility of polar and equatorial air mixing at midlatitudes at heights close to 90 km. Meridional circulation is discussed in relation to the winter anomaly in D -region radio-w ave absorption.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
