Understanding the Contribution of Ozone Changes in the Historical Sea Level Change ...

• Main Authors: Rathore, Saurabh, Church, John, Zika, Jan, Zhang, Xuebin, Sohail, Taimoor
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Antarc*; Antarctic; Antarctic Peninsula; Southern Ocean
• Online Access: https://dx.doi.org/10.57757/iugg23-2976; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018904

<!--!introduction!--> Changes in sea level are mostly driven by internal climate variability, and anthropogenic forcing. Moreover, changes in stratospheric and tropospheric Ozone during the second-half of the 20 th &nbsp;century&nbsp;&nbsp;also cause significant changes in ocean heat uptake. A recent study has shown that both stratospheric and tropospheric ozone have contributed to the Southern Ocean warming in the deep ocean. This study has shown that the 30% of Southern Ocean warming during 1955-2000 is driven by ozone in the upper 2000 m of the ocean. Of this 30%, 60% is attributed to stratospheric and 40% to tropospheric ozone changes. Changes in ocean heat uptake consequently affect sea level and we assess these changes due to ozone. From the analysis of four CMIP6&nbsp;&nbsp;models&nbsp;&nbsp;with a total of 28 ensemble members, we find that thermosteric sea level increases between 40-60 S and decreases between 60 S and the Antarctic peninsula. Hence, there is a ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...