Optimization of GPS water vapor tomography technique with radiosonde and
COSMIC historical data

Ye, Shirong; Xia, Pengfei; Cai, Changsheng

doi:https://doi.org/10.5194/angeo-34-789-2016

Articles | Volume 34, issue 9

https://doi.org/10.5194/angeo-34-789-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/angeo-34-789-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 34, issue 9

Regular paper

|

20 Sep 2016

Regular paper |

| 20 Sep 2016

Optimization of GPS water vapor tomography technique with radiosonde and COSMIC historical data

Shirong Ye, Pengfei Xia, and Changsheng Cai

Data sets

COSMIC Radio Occultation data COSMIC Data Analysis and Archive Center (CDAAC) http://cosmic-io.cosmic.ucar.edu/cdaac/index.html

45004 Kings Park radiosonde observations University of Wyoming (UWYO) http://weather.uwyo.edu/upperair/sounding.html

GPS data and meteorological data Survey and Mapping Office of the Lands Department https://www.geodetic.gov.hk/

Short summary

The near-real-time high spatial resolution of atmospheric water vapor distribution is vital in numerical weather prediction. GPS tomography technique has been proved effectively for three-dimensional water vapor reconstruction. In this study, the tomography processing is optimized in a few aspects by the aid of radiosonde and COSMIC historical data, including the accuracy improvement of tropospheric zenith hydrostatic delay and precipitable water vapor conversion factor.