Volume 36 Issue 3
May  2016
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SONG Yaxiong, FU Yang, HU Xiong, GONG Xiaoyan, YAN Wei, ZHAO Zengliang, DU Xiaoyong. Study of Refractivity Retrievals Based on GPS Radio Occultation Mean Bending Angles[J]. Journal of Space Science, 2016, 36(3): 312-322. doi: 10.11728/cjss2016.03.312
Citation: SONG Yaxiong, FU Yang, HU Xiong, GONG Xiaoyan, YAN Wei, ZHAO Zengliang, DU Xiaoyong. Study of Refractivity Retrievals Based on GPS Radio Occultation Mean Bending Angles[J]. Journal of Space Science, 2016, 36(3): 312-322. doi: 10.11728/cjss2016.03.312

Study of Refractivity Retrievals Based on GPS Radio Occultation Mean Bending Angles

doi: 10.11728/cjss2016.03.312
  • Received Date: 2015-04-02
  • Rev Recd Date: 2016-01-23
  • Publish Date: 2016-05-15
  • The retrieval step from bending angle to refractivity requires background information.Retrieval schemes in different GNSS-RO processing centers use different types of background data, which is the source of inconsistency of the generated radio occultation climatologies In this paper, the COSMIC excess-phase data during Jan.,Apr.,Jul.and Oct.of 2008 was used to study the retrieving of monthly mean refractivity from monthly zonal mean bending angles The comparison results show that:it is not necessary to apply statistical optimization to individual bending angles, since the approach based on mean bending angles and the standard method produce nearly identical mean refractivity below 40 km;and above 50 km.The approach based on mean bending angles is better than the standard method when compared with mean refractivity generated from ECMWF data.

     

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