Identification

Title

Intercomparison of long-term ground-based measurements of total, tropospheric, and stratospheric ozone at Lauder, New Zealand

Abstract

A comprehensive intercomparison study was conducted of total column ozone and vertical distribution measurements at Lauder station from 2000-2022, analyzing data from multiple ground-based instruments including FTIR, Dobson spectrophotometer, UV2, microwave radiometer, ozonesondes, and stratospheric lidar. Using FTIR as reference, we found strong agreement in total column measurements, with high correlations (>0.93) and low biases (-2% to -3%). While negative biases were observed in stratospheric columns (-1.2% to -6.8%), suggesting an underestimation of infrared spectroscopic line intensities, dispersions remained within 5%. No significant drifts were found in tropospheric measurements, though some notable drifts were observed in stratospheric measurements, particularly with lidar and microwave radiometer in the middle stratosphere and with Umkehr and lidar in the upper stratosphere. This study resolved approximately half of the trend differences noted in previous LOTUS research through analysis of sampling, vertical sensitivity, and temporal factors, demonstrating the importance of well-harmonized measurements for accurate trend detection.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.net/ark:/85065/d7nz8d0p

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

2024-12-01T00:00:00Z

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

<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