Deriving the slit functions from OMI solar observations and its implications for ozone-profile retrieval

Sun, Kang; Liu, Xiong; Huang, Guanyu; González Abad, Gonzalo; Cai, Zhaonan; Chance, Kelly; Yang, Kai

doi:https://doi.org/10.5194/amt-10-3677-2017

Articles | Volume 10, issue 10

https://doi.org/10.5194/amt-10-3677-2017

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

Special issue:

Ten years of Ozone Monitoring Instrument (OMI) observations...

https://doi.org/10.5194/amt-10-3677-2017

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

Articles | Volume 10, issue 10

Research article

|

09 Oct 2017

Research article |

| 09 Oct 2017

Deriving the slit functions from OMI solar observations and its implications for ozone-profile retrieval

Kang Sun, Xiong Liu, Guanyu Huang, Gonzalo González Abad, Zhaonan Cai, Kelly Chance, and Kai Yang

Data sets

OMI 75 L1B solar irradiance products GES DISC https://aura.gesdisc.eosdis.nasa.gov/data/Aura_OMI_Level1/OML1BIRR.003/

Short summary

This study derives on-orbit slit functions from the OMI irradiance spectra. The results differ from the widely used preflight slit functions. The on-orbit changes of OMI slit functions are insignificant over time after accounting for the solar activity. Applying the derived on-orbit slit functions to ozone-profile retrieval shows substantial improvements over the preflight slit functions based on comparisons with ozonesonde validations.