Sensing heavy precipitation with GNSS polarimetric radio occultations

This study presents, for the first time ever, occulting signals of the Global Navigation Satellite Systems (GNSSs) acquired at two polarizations from a Low Earth Orbiter, and it shows that they sense heavy precipitation. The data sets are obtained from early stages of the Radio Occultation and Heavy Precipitation experiment aboard the PAZ satellite, launched in February 2018 and activated in May 2018. Preliminary calibration algorithms are applied to remove other systematic effects, and the resulting vertical profiles of polarimetric phase shift observations are compared to precipitation information from other missions. The analysis of the data shows consistency between Radio Occultation and Heavy Precipitation experiment aboard the PAZ satellite polarimetric phase shift measurements and presence of hydrometeors, with strong signatures from heavy precipitation. The polarimetric measurements also capture vertical features consistent with the vertical structures of precipitation.

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Related Dataset #1 : GPM IMERG Final Precipitation L3 Half Hourly 0.1 degree x 0.1 degree V05

Related Dataset #2 : GPM DPR and GMI Combined Precipitation L2B 1.5 hours 5 km V05

Related Dataset #3 : NCEP/CPC L3 Half Hourly 4km Global (60S - 60N) Merged IR V1
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Author Cardellach, E.
Oliveras, S.
Rius, A.
Tomás, S.
Ao, C. O.
Franklin, G. W.
Iijima, B. A.
Kuang, D.
Meehan, T. K.
Padullés, R.
de la Torre Juárez, M.
Turk, F. J.
Hunt, Douglas C.
Schreiner, William S.
Sokolovskiy, S. V.
Vanhove, Teresa
Weiss, Jan
Yoon, Yoke
Zeng, Zhen
Clapp, J.
Xia-Serafino, W.
Cerezo, F.
Publisher UCAR/NCAR - Library
Publication Date 2019-01-28T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Topic Category geoscientificInformation
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Metadata Date 2023-08-18T19:22:39.595611
Metadata Record Identifier edu.ucar.opensky::articles:22334
Metadata Language eng; USA
Suggested Citation Cardellach, E., Oliveras, S., Rius, A., Tomás, S., Ao, C. O., Franklin, G. W., Iijima, B. A., Kuang, D., Meehan, T. K., Padullés, R., de la Torre Juárez, M., Turk, F. J., Hunt, Douglas C., Schreiner, William S., Sokolovskiy, S. V., Vanhove, Teresa, Weiss, Jan, Yoon, Yoke, Zeng, Zhen, Clapp, J., Xia-Serafino, W., Cerezo, F.. (2019). Sensing heavy precipitation with GNSS polarimetric radio occultations. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7bg2s1s. Accessed 17 June 2025.

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