Identification

Title

Long‐term variability and tendencies in non‐migrating diurnal tide from WACCM6 simulations during 1850-2014

Abstract

This study reports the long‐term variability and tendencies in important non‐migrating (DE3, DW2, DW3) and stationary (DS0) diurnal tides using a three‐member ensemble of historical simulations of National Center for Atmospheric Research Whole Atmospheric Community Climate Model latest version 6 for 1850-2014 (165 years). The climatological features of the tide in temperature (T), zonal wind (U) and meridional wind (V) are presented for equinoxes/solstices and winter/summer. The response due to solar cycle (SC), quasi biennial oscillation at 10 hPa and 30 hPa, El Niño‐Southern Oscillation (ENSO), ozone depleting substances (ODS), carbon dioxide (CO2), and stratospheric sulfate aerosol (volcanic eruptions) to change in tidal amplitudes with respect to 1850-1860 are analyzed using multiple linear regression. The annual mean amplitudes increase in the upper mesosphere and lowermost thermosphere (0.0001-0.01 hPa) in the three components predominantly due to increasing CO2 and the ODSs play secondary role. However, the increasing trends are not pronounced until 1950 in the case of DE3 and DW3 amplitudes. The contribution due to ENSO shows decreasing trend in DE3, DW2, and DW3 while it causes increasing trends for DS0. Furthermore, the seasonal and latitude‐pressure variations of the tidal responses to the above seven indices are presented in T and V. All the responses, except for the solar signal, are significant mostly in the upper mesosphere and lowermost thermosphere typically at equatorial/low latitudes.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7sq93r1

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

2021-03-01T00:00:00Z

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