Fast retrievals of tropospheric carbonyl sulfide with IASI

Vincent, R. Anthony; Dudhia, Anu

doi:https://doi.org/10.5194/acp-17-2981-2017

Articles | Volume 17, issue 4

https://doi.org/10.5194/acp-17-2981-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-17-2981-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 4

Research article

|

28 Feb 2017

Research article |

| 28 Feb 2017

Fast retrievals of tropospheric carbonyl sulfide with IASI

R. Anthony Vincent and Anu Dudhia

Data sets

IASI radiance data EUMETSAT http://www.eumetsat.int/website/home/Data/index.html

Flask OCS data S. Montzka http://www.esrl.noaa.gov/gmd/hats/gases/OCS.html

Short summary

A fast method to estimate trace gases using the IASI sensor is presented and applied to tropospheric carbonyl sulphide (OCS). This rapid approach neglects non-linear effects, which introduces an 11 % error on average when estimating OCS but is significantly faster than iterative methods. All of the IASI data from 2014 were analysed to show seasonal and spatial trends in OCS. These results were compared to ground samples taken from seven different NOAA sites across the globe.