Articles | Volume 16, issue 13
https://doi.org/10.5194/amt-16-3345-2023
https://doi.org/10.5194/amt-16-3345-2023
Research article
 | 
04 Jul 2023
Research article |  | 04 Jul 2023

Efficient collocation of global navigation satellite system radio occultation soundings with passive nadir microwave soundings

Alex Meredith, Stephen Leroy, Lucy Halperin, and Kerri Cahoy

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Cited articles

Banos, I., Sapucci, L., Cucurull, L., Bastarz, C., and Silveira, B.: Assimilation of GPSRO Bending Angle Profiles into the Brazilian Global Atmospheric Model, Remote Sens., 11, 256, https://doi.org/10.3390/rs11030256​​​​​​​, 2019. a
Cardinali, C. and Healy, S.: Impact of GPS radio occultation measurements in the ECMWF system using adjoint-based diagnostics, Q. J. Roy. Meteor. Soc., 140, 2315–2320, https://doi.org/10.1002/qj.2300, 2014. a
Chung, N., Cram, T., Smith, S. R., Tsontos, V. M., Huang, T., Sparling, K., Perez, S., Phyo, W., Ji, Z., and Kuttruff, R.: Development of a Cloud-based Data Match-Up Service (CDMS) in Support of Ocean Science Applications, in: OCEANS 2022, Hampton Roads, 1–6, https://doi.org/10.1109/OCEANS47191.2022.9977163, 2022. a
EUMETSAT: AMSU-A Level 1B – Metop – Global, European Organisation for the Exploitation of Meteorological Satellites, https://eoportal.eumetsat.int, last access: 8 May 2023. a
Feltz, M., Knuteson, R., and Revercomb, H.: Assessment of COSMIC radio occultation and AIRS hyperspectral IR sounder temperature products in the stratosphere using observed radiances, J. Geophys. Res., 122, 8593–8616, https://doi.org/10.1002/2017JD026704, 2017. a
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Short summary
We developed a new efficient algorithm leveraging orbital dynamics to collocate radio occultation soundings with microwave radiance soundings. This new algorithm is 99 % accurate and is much faster than traditional collocation-finding approaches. Speeding up collocation finding is useful for calibrating and validating microwave radiometers and for data assimilation into numerical weather prediction models. Our algorithm can also be used to predict collocation yield for new satellite missions.
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