Articles | Volume 11, issue 4
Atmos. Meas. Tech., 11, 2051–2066, 2018
https://doi.org/10.5194/amt-11-2051-2018

Special issue: Observing Atmosphere and Climate with Occultation Techniques...

Atmos. Meas. Tech., 11, 2051–2066, 2018
https://doi.org/10.5194/amt-11-2051-2018

Research article 11 Apr 2018

Research article | 11 Apr 2018

Evaluating the lower-tropospheric COSMIC GPS radio occultation sounding quality over the Arctic

Xiao Yu et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Feiqin Xie on behalf of the Authors (23 Jan 2018)  Author's response    Manuscript
ED: Publish subject to technical corrections (05 Feb 2018) by Andrea K. Steiner
AR by Feiqin Xie on behalf of the Authors (14 Feb 2018)  Author's response    Manuscript
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Short summary
Atmospheric observations from GPS receiver satellites offer uniform spatial coverage over the Arctic. The GPS profiles sensing deep into the lowest 300 m of the atmosphere only reach 50–60 % in summer but over 70 % in other seasons. The profile uncertainty due to different data centers is within 0.07 % in refractivity, 0.72 K in temperature, and 0.05 g kg-1 in humidity below 10 km. A systematic negative bias of 1 % in refractivity below 2 km is only seen in the summer due to moisture impact.