Articles | Volume 10, issue 12
https://doi.org/10.5194/amt-10-4761-2017
https://doi.org/10.5194/amt-10-4761-2017
Research article
 | 
08 Dec 2017
Research article |  | 08 Dec 2017

Correcting negatively biased refractivity below ducts in GNSS radio occultation: an optimal estimation approach towards improving planetary boundary layer (PBL) characterization

Kuo-Nung Wang, Manuel de la Torre Juárez, Chi O. Ao, and Feiqin Xie

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Latest update: 23 Apr 2024
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Short summary
Refractivity retrievals from GNSS radio occultation (RO) are known to be negatively biased within the planetary boundary layer (PBL). We propose an optimization-based reconstruction method in this paper to correct the negative bias with external measurements of precipitable water (PW). Our results show that the proposed method can greatly reduce the bias and better characterize the PBL.