******************************************************************************
dorismail               03-Feb-2026 15:34:29 Message No 1467
******************************************************************************


Author: "wangningbo@aoe.ac.cn" <wangningbo@aoe.ac.cn>
Subject: NRT DORIS Data for validating IGS real-time and post-processing Global TEC Maps


Dear colleagues,

We are pleased to share with you our recent publication entitled “Real-time versus postprocessing IGS combined global TEC maps: examined by Jason-3 altimetry and DORIS observations”, which has been accepted and published in GPS Solutions. In that paper, we analyzed how the independent DORIS data can be used to validate the performance of the existing IGS combined global TEC maps. 

As stated in DORISMail-1461 and IGSMAIL-8645, the derived DORIS-dSTEC product files are publicly accessible from the CAS data center at https://data.bdsmart.cn/pub/product/iono/doris/dstec/$YYYY/$DOY 

For details how the DORIS-dSTEC products are generated and how they can be used for validating GNSS-based ionospheric TEC maps, please refer to 
Li A, Wang N, Li Z, Liu A, Li Y, Wang L, Liu B (2026). Real-time versus postprocessing IGS combined global TEC maps: examined by Jason-3 altimetry and DORIS observations. GPS Solutions, 30(1). DOI:10.1007/s10291-026-02022-y
Liu A, Wang N, Dettmering D, Li Z, Schmidt M, Wang L, Yuan H (2023). Using DORIS Data for Validating Real-Time GNSS Ionosphere Maps. Advances In Space Research. DOI:10.1016/j.asr.2023.01.050
To further extend the use of NRT DORIS data for ionospheric analysis, we are planning to prepare an overview paper on Near-Real-Time DORIS Data for Ionospheric Applications. Potential topics include (but are not limited to) 
Overview of DORIS system and architectures
DORIS data processing in ionospheric analysis
Overview of NRT DORIS data 
Extraction of NRT DORIS-based STEC & dSTEC information
Combing NRT DORIS data for global TEC mapping
NRT DORIS data for GIM combination
NRT DORIS data for ionospheric perturbation/sintillation analysis
NRT DORIS data for ionospheric model assimilation
... 
We expect the the manuscript to be ready for submission late this year. If you have additional ideas or would like to contribute to this overview paper, please kindly consider to contact me (wangningbo@aoe.ac.cn), and we can discuss the next steps for manuscript preparation.

With best regards,
Ningbo Wang 
IDS WG on NRT DORIS Ionospheric Applications