Identification

Title

Ozone source attribution and its modulation by the Arctic oscillation during the spring months

Abstract

We use the Model of Ozone and Related Tracers (MOZART-2) driven by National Center for Environmental Prediction (NCEP) meteorology between 1980 and 2001 to examine the signature of the Arctic oscillation (AO) on tropospheric ozone during February and March. Regionally, the AO can modulate ozone by up to 5 parts per billion by volume (ppbv). We examine the modulation of ozone produced from Asian, American, and European emissions separately, the modulation of ozone produced from all tropospheric emissions, and the modulation of ozone transported from the stratosphere. During the positive phase of the AO, the simulations show a statistically significant decrease in zonally averaged ozone throughout the depth of the troposphere north of approximately 50°N. This decrease is attributed to a decrease in the stratospheric component of ozone. The longitudinal response of ozone to the AO in the upper troposphere is dictated by the changes in tropopause height associated with the AO, such that lower (higher) heights imply increased (decreased) ozone. Locally, the modulation of stratospheric ozone dominates the ozone signal throughout the depth of the troposphere over Northern Canada and the Arctic, where the AO is correlated with ozone decreases. In other locations, the local response to the AO is governed by changes in the transport of ozone produced in the troposphere. These locations include the lower troposphere over the Atlantic basin, where ozone is negatively correlated with the AO, and the lower troposphere over Europe and Eastern Siberia, where ozone is positively correlated with the AO.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.org/ark:/85065/d7dj5ftd

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

2007-06-05T00:00:00Z

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