Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 14, issue 1
Articles | Volume 14, issue 1
https://doi.org/10.5194/amt-14-557-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-14-557-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 14, issue 1
Research article
 | 
26 Jan 2021
Research article |  | 26 Jan 2021

Accounting for the photochemical variation in stratospheric NO2 in the SAGE III/ISS solar occultation retrieval

Kimberlee Dubé, Adam Bourassa, Daniel Zawada, Douglas Degenstein, Robert Damadeo, David Flittner, and William Randel

Data sets

SAGE III/ISS L1B Solar Event Transmission Data (HDF-EOS) V051 NASA/LARC/SD/ASDC https://doi.org/10.5067/ISS/SAGEIII/SOLAR_HDF4_L1B-V5.1

SAGE III/ISS L2 Solar Event Species Profiles (HDF-EOS) V051 NASA/LARC/SD/ASDC https://doi.org/10.5067/ISS/SAGEIII/SOLAR_HDF4_L2-V5.1

SAGE III/ISS NO2 profiles retrieved by accounting for diurnal variations K. Dube https://research-groups.usask.ca/osiris/data-products.php

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Short summary
SAGE III/ISS measures profiles of NO2; however the algorithm to convert raw measurements to NO2 concentration neglects variations caused by changes in chemistry over the course of a day. We devised a procedure to account for these diurnal variations and assess their impact on NO2 measurements from SAGE III/ISS. We find that the new NO2 concentration is more than 10 % lower than NO2 from the standard algorithm below 30 km, showing that this effect is important to consider at lower altitudes.
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