Identification

Title

Local-time variabilities of march equinox daytime SABER CO2 in the upper mesosphere and lower thermosphere region

Abstract

This work reports the analysis of the local-time variations of daytime CO2 in the Upper Mesosphere and Lower Thermosphere region as observed by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument onboard the Thermosphere Ionosphere Mesosphere Energetics and Dynamics satellite. Results show that daytime SABER CO2 in the upper mesosphere between latitudes 30°S and 50°N is lower in the morning than in the afternoon. The same was found in the lower thermosphere but between latitudes 50°S and 50°N. The opposite was found in the upper mesosphere between 50°S and 30°S. These results are compared to simulations of CO2 by the Whole Atmosphere Community Climate Model-eXtended. It was found that the local-time variations of Whole Atmosphere Community Climate Model–eXtended CO2 are weaker than SABER CO2. Model diagnostics indicated that these local-time variations in the model are driven primarily (secondarily) by strong vertical (meridional) gradients in Upper Mesosphere and Lower Thermosphere CO2 volume mixing ratios and strong local-time variations in vertical (meridional) winds. This work concludes that SABER CO2 shows significant local-time variations that are not well simulated by Whole Atmosphere Community Climate Model-eXtended, and we suggest that this is likely because of weaker tidal forcing in the model.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.org/ark:/85065/d71z470h

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

2020-03-01T00:00:00Z

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