Global optimal estimation retrievals of  atmospheric carbonyl sulfide over water  from IASI measurement spectra for 2018

Cartwright, Michael P.; Harrison, Jeremy J.; Moore, David P.; Pope, Richard J.; Chipperfield, Martyn P.; Wilson, Chris; Feng, Wuhu

doi:10.5194/acp-25-15913-2025

Articles | Volume 25, issue 22

https://doi.org/10.5194/acp-25-15913-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-25-15913-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 22

Research article

|

18 Nov 2025

Research article |

| 18 Nov 2025

Global optimal estimation retrievals of atmospheric carbonyl sulfide over water from IASI measurement spectra for 2018

Michael P. Cartwright, Jeremy J. Harrison, David P. Moore, Richard J. Pope, Martyn P. Chipperfield, Chris Wilson, and Wuhu Feng

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Cumulative views and downloads (calculated since 02 Apr 2025)

Month	HTML	PDF	XML	Total
Apr 2025	90	44	6	140
May 2025	29	30	3	62
Jun 2025	75	17	6	98
Jul 2025	47	19	6	72
Aug 2025	106	8	0	114
Sep 2025	374	8	1	383
Oct 2025	20	9	1	30
Nov 2025	267	36	9	312
Dec 2025	107	55	7	169
Jan 2026	92	43	12	147
Feb 2026	85	52	9	146
Mar 2026	83	53	7	143
Apr 2026	29	25	4	58

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Short summary

We use satellite measurements to estimate quantities of a gas called carbonyl sulfide (OCS) in the atmosphere. OCS is consumed during photosynthesis, much like carbon dioxide (CO₂). Our data is focused mostly over the global oceans for the year 2018, and we find it compares well with past satellite observations, ground-based measurements and modelled OCS. We hope to extend this measurement record and use it in data-driven tools in the future to better understand the carbon cycle globally.