Articles | Volume 16, issue 4
Development and technical paper
24 Feb 2023
Development and technical paper |  | 24 Feb 2023

Analysis of systematic biases in tropospheric hydrostatic delay models and construction of a correction model

Haopeng Fan, Siran Li, Zhongmiao Sun, Guorui Xiao, Xinxing Li, and Xiaogang Liu


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-898', Anonymous Referee #1, 23 Dec 2022
    • AC1: 'Reply on RC1', Haopeng Fan, 24 Dec 2022
  • RC2: 'Comment on egusphere-2022-898', Anonymous Referee #2, 30 Dec 2022
    • AC2: 'Reply on RC2', Haopeng Fan, 31 Dec 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Haopeng Fan on behalf of the Authors (03 Jan 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (11 Jan 2023) by Thomas Poulet
RR by Anonymous Referee #1 (11 Jan 2023)
RR by Anonymous Referee #2 (22 Jan 2023)
ED: Publish as is (23 Jan 2023) by Thomas Poulet
AR by Haopeng Fan on behalf of the Authors (23 Jan 2023)

Post-review adjustments

AA: Author's adjustment | EA: Editor approval
AA by Haopeng Fan on behalf of the Authors (09 Feb 2023)   Author's adjustment   Manuscript
EA: Adjustments approved (09 Feb 2023) by Thomas Poulet
Short summary
The traditional tropospheric zenith hydrostatic delay (ZHD) model's bias is usually thought negligible, yet it still reaches 10 mm sometimes and would lead to millimeter-level position errors for space geodetic observations. Therefore, we analyzed the bias’ characteristics and present a grid model to correct the traditional ZHD formula. When verifying the efficiency based on data from the ECMWF (European Centre for Medium-Range Weather Forecasts), ZHD biases were rectified by ~50 %.