Validation of Solar Occultation for Ice Experiment (SOFIE) nitric oxide measurements

Nitric oxide (NO) measurements from the Solar Occultation for Ice Experiment (SOFIE) are validated through detailed uncertainty analysis and comparisons with independent observations. SOFIE was compared with coincident satellite measurements from the Atmospheric Chemistry Experiment (ACE) - Fourier Transform Spectrometer (FTS) instrument and the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) instrument. The comparisons indicate mean differences of less than similar to 50% for altitudes from roughly 50 to 105 km for SOFIE spacecraft sunrise and 50 to 140 km for SOFIE sunsets. Comparisons of NO time series show a high degree of correlation between SOFIE and both ACE and MIPAS for altitudes below similar to 130 km, indicating that measured NO variability in time is robust. SOFIE uncertainties increase below similar to 80 km due to interfering H2O absorption and signal correction uncertainties, which are larger for spacecraft sunrise compared to sunset. These errors are sufficiently large in sunrises that reliable NO measurements are infrequent below similar to 80 km.

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Author Hervig, Mark E.
Marshall, Benjamin T.
Bailey, Scott M.
Siskind, David E.
Russell III, James M.
Bardeen, Charles G.
Walker, Kaley A.
Funke, Bernd
Publisher UCAR/NCAR - Library
Publication Date 2019-06-13T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2023-08-18T19:20:30.499711
Metadata Record Identifier edu.ucar.opensky::articles:22606
Metadata Language eng; USA
Suggested Citation Hervig, Mark E., Marshall, Benjamin T., Bailey, Scott M., Siskind, David E., Russell III, James M., Bardeen, Charles G., Walker, Kaley A., Funke, Bernd. (2019). Validation of Solar Occultation for Ice Experiment (SOFIE) nitric oxide measurements. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d74x5brk. Accessed 31 January 2025.

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