Articles | Volume 14, issue 12
© Author(s) 2021. This work is distributed underthe Creative Commons Attribution 4.0 License.
Intercomparison of CO measurements from TROPOMI, ACE-FTS, and a high-Arctic ground-based Fourier transform spectrometer
- Final revised paper (published on 08 Dec 2021)
- Preprint (discussion started on 06 Jul 2021)
Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor |
: Report abuse
RC1: 'Comment on amt-2021-190', Anonymous Referee #1, 31 Aug 2021
- AC1: 'Reply on RC1', Tyler Wizenberg, 21 Oct 2021
RC2: 'Comment on amt-2021-190', Bavo Langerock, 15 Sep 2021
- AC2: 'Reply on RC2', Tyler Wizenberg, 21 Oct 2021
Peer review completion
AR: Author's response | RR: Referee report | ED: Editor decision
AR by Tyler Wizenberg on behalf of the Authors (28 Oct 2021)  Author's response Author's tracked changes Manuscript
ED: Publish as is (29 Oct 2021) by Helen Worden
In this paper the authors present a comparison of CO TROPOMI with ACE-FTS in the Arctic. To provide context to this comparison, TROPOMI and ACE-FTS CO products are compared against NDACC measurements from PEARL-FTS in Eureka. The study suggests that TROPOMI CO product exhibits a high bias in the high-Arctic region.
This study has been thoroughly conducted. The paper is well written and interesting. I found the paper clearly presented and well organized. This work is useful for the TROPOMI team to improve the CO product, as well as for the community.
The subject of the paper is appropriate to AMT. I recommend the paper to be published, after addressing the minor issues I raise below.
L50: add TES +reference
L85: methodology used for comparing each instrument IS described
L221: add units of CO reference profiles
L265: null-space error en (also known as the smoothing error). Why not prefer the smoothing error ? You should add the Rodgers reference. If you want to use the null-space error, you have to explain why. You give references of different studies but we need explanations.
L285: In the following section describes.. Remove “In”
L300: A is the VMR averaging kernel > A is the VMR/VMR averaging kernel
(A is unit less)
Same thing in L343
L328-330: What reference should you give when talking about sensitivity ? Rodgers 2000 ? Rodgers and Connor 2003 ? As already said, you mention a work published in a paper “following xx et al.”. You should be more specific and cite the proper reference for terminology.
L362: SEM. Define (to understand the difference with standard error and standard deviation) and justify your choice for using SEM. Make uniform notation.
Caption of Table 3: “standard deviations of the differences” in the first sentence. “standard error of the mean” in the last sentence. It is confusing. The caption should be reformulated.
L481: coming from the measurement IN this range ?
L487: “do not overlap within their bounds of uncertainty on the standard error” Not clear, please reformulate