Wet chemical surface ozone measurements during POLARSTERN cruise ANT-III/3 and ANT-III/4 (PS06) in 1985

On the outward journey of PS06 an ozone minimum was encountered at the ITCZ, as is typical for high levels of solar radiation and low vertical exchange. Under such conditions, ozone can be depleted by photolysis, but cannot be replaced due to weak vertical exchange. On the return voyage, two ozone p...

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Bibliographic Details
Main Author: Winkler, Peter
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
ANT-III/3
ANT-III/4
CT
DATE/TIME
Electrochemical concentration cell (ECC) (Atmannspacher 1971)
Event label
LATITUDE
LONGITUDE
Ozone
Polarstern
PS06
PS06/3-track
PS06/4-track
PS06 SIBEX
Underway cruise track measurements
Berichte zur Polar- und Meeresforschung
Reports on Polar and Marine Research
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.949062
https://doi.org/10.1594/PANGAEA.949062
Description
Summary:On the outward journey of PS06 an ozone minimum was encountered at the ITCZ, as is typical for high levels of solar radiation and low vertical exchange. Under such conditions, ozone can be depleted by photolysis, but cannot be replaced due to weak vertical exchange. On the return voyage, two ozone peaks occurred at and north of the ITCZ. According to Class and Ballschmiter (1986) who measured some organic trace gases, the ITCZ consisted of two branches found at 2°S and 2°N. The noticeable ozone peaks may have been caused by strong vertical exchange, with ozone being mixed down from the upper troposphere. In some cases, clear daily variations were recorded during the journey.

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