Identification

Title

Seasonal variability of the diurnal tide in the mesosphere and lower thermosphere over Maui, Hawaii (20.7°N, 156.3°W)

Abstract

The seasonal variability of the diurnal tide in the mesosphere and lower thermosphere over Maui, Hawaii (20.7°N, 156.3°W), is investigated using meteor radar horizontal wind measurements from the years 2002 to 2007. The semiannual oscillation (SAO) of tidal amplitudes is dominant above ~88 km, with amplitudes at equinoxes 2-3 times larger than at solstices. Below 88 km, the annual oscillation (AO) dominates, and its magnitude is smaller than the SAO. The AO dominates in the phase variation of the diurnal tide, which advances in winter and lags in summer as compared with equinoxes. The vertical wavelength also has a noticeable seasonal variation with shorter vertical wavelengths found at equinoxes. The reconstructed diurnal tide from the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) Doppler interferometer (TIDI) and Sounding the Atmosphere using Broadband Emission Radiometry (SABER) measurements is compared with the meteor radar observation, and a consistency is found in the seasonal variation of the tidal amplitude. On the basis of the TIDI and SABER measurements, the migrating diurnal tide (DW1) is the dominant tidal component, while three other nonmigrating tides, DW2, DS0, and DE3, are nonnegligible. The seasonal variation of the diurnal tide is well captured by the global scale wave model and the Whole Atmosphere Community Climate Model, although important discrepancies still exist.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d78k79tm

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

2011-09-02T00:00:00Z

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