Identification

Title

Simulation and observation of lunar tide effect on high‐latitude, mesospheric and lower thermospheric winds during the 2013 sudden stratospheric warming event

Abstract

We investigate the high-latitude mesospheric and lower thermospheric winds during the 2013 sudden stratospheric warming event using ground-based optical Doppler remote sensing observations of the OH and O (557.7 nm) emission from Eureka (80 degrees N, 86 degrees W) and Thermosphere Ionosphere Mesosphere Electrodynamics-General Circulation Model (TIME-GCM) simulations. Simulations with and without lunar tidal forcing of the TIME-GCM were performed. It has been found that the additional lunar tidal forcing only impacts slightly the semidiurnal tidal amplitude and phase at Eureka. The TIME-GCM simulations still have noticeable discrepancies in the mean winds and the semidiurnal tidal amplitude and phase compared to the observations. The semidiurnal tidal phase shift during the stratospheric warming event may be associated with the sudden stratospheric warming related zonal mean wind reversal, which is similar to the seasonal change in the zonal mean wind from winter to summer. Accordingly, during the reversal, more modes of the semidiurnal tide propagate to the mesosphere, changing the phase of the semidiurnal tide.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7ff3wdx

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2019-02-01T00:00:00Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact