Identification

Title

Springtime UTLS ozone variability in East Asia: Insights from 16 years of IASI observations (2008â€“2023)

Abstract

We investigated the springtime variability of ozone in the upper troposphere and lower stratosphere (UTLS) over East Asia using data from the Infrared Atmospheric Sounding Interferometer (IASI) onboard the Metop satellite series (Metop‐A, Metop‐B, and Metop‐C), complemented with ozonesonde observations and MERRA‐2 reanalysis data. The accuracy of the IASI ozone profiles was confirmed through validation against ozonesonde measurements, demonstrating their reliability for monitoring UTLS ozone dynamics. An empirical orthogonal function analysis revealed that the first principal component explained more than half of the variance in UTLS ozone during springtime, with strong positive correlations in regions influenced by the East Asian jet stream (EAJS). The analysis showed that the strengthening of the jet stream was associated with increased ozone concentrations, likely driven by enhanced baroclinic wave activity and stratospheric intrusion. Moreover, the intensification of the EAJS was associated with strengthening of the local Hadley Cells and the meridional temperature gradient over the upstream region even during springtime.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.net/ark:/85065/d7c251vr

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

2025-06-28T00:00:00Z

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

<span style="font-family:Arial;font-size:10pt;font-style:normal;" data-sheets-root="1">Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.</span>

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