Identification

Title

Double-layer structure of OH dayglow in the mesosphere

Abstract

Observations by the Sounding of the Atmosphere using Broadband Emission Radiometry instrument on the Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics satellite from January 2002 to June 2014 are used to study the vertical structure of OH dayglow. The results indicate for the first time that there is a double-layer structure in the distributions of 12 year averaged OH airglow emission, [O₃], and [H] during the daytime. The upper layer of OH dayglow is located in the mesopause region (~88 km) at a similar altitude to that of the OH nightglow. The lower layer is situated in the range of 70–85 km. Both the peak emission and height of the lower layer increase with local time. The distance between the two layers decreases with local time. At the equator, the lower layer forms at ~09:00 LT and lasts for about 8 h; during this time the interlayer distance decreases from 13 km to 5 km. The double-layer structure is more obvious and longer-lived during the equinoxes and at lower latitudes. The double-layer structure of OH dayglow emission is a long-term stable structure and is mainly caused by photochemical processes involving [O₃]. It is also modulated by background atmospheric temperature and [H].

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7j967k0

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

2015-07-01T00:00:00Z

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

Copyright 2015 American Geophysical Union.

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

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 date

2023-08-18T18:58:18.318275

Metadata language

eng; USA