Identification

Title

Assessment of the simulation of gravity waves generation by a tropical cyclone in the high-resolution WACCM and the WRF

Abstract

National Center for Atmospheric Research Whole Atmosphere Community Climate Model (WACCM) with quasi-uniform grid of similar to 25-km horizontal resolution can resolve gravity waves (GWs) with horizontal scales down to similar to 250 km. In this study, the scale interactions between the GWs resolved by WACCM and those with smaller scales, its potential impact on the resolved waves, and the dependence of wave characteristics on spatial resolution are examined. The Weather Research and Forecasting (WRF) simulations with five different spatial resolutions (25, 20, 15, 10, and 4 km) are performed, with the high-resolution WACCM wind and temperature fields as initial and boundary conditions. Semicircular GWs excited by a tropical cyclone (TC) resolved by WACCM and WRF (25-km resolution) are found at similar locations and have similar structures. In this study, the sensitivity of GW structure to the choice of model horizontal resolutions is examined. Although WRF is successful in generating semicircular GWs in each case, the simulation reveals more power at shorter horizontal wavelengths of GWs at finer resolutions. Furthermore, we evaluate the performance of all these simulations in resolving GWs induced by the tropical cyclone (TGWs). The magnitude of the zonal momentum flux calculated from the high-resolution WACCM is greater than the WRF-25 simulation, in addition, the magnitude is comparable to the results from the WRF-15 and WRF-10 simulations.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7hq42t4

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

2018-09-01T00:00:00Z

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