Tropical troposphere to stratosphere transport of carbon monoxide and   long-lived trace species in the Chemical Lagrangian Model of the   Stratosphere (CLaMS)

Pommrich, R.; Müller, R.; Grooß, J.-U.; Konopka, P.; Ploeger, F.; Vogel, B.; Tao, M.; Hoppe, C. M.; Günther, G.; Spelten, N.; Hoffmann, L.; Pumphrey, H.-C.; Viciani, S.; D'Amato, F.; Volk, C. M.; Hoor, P.; Schlager, H.; Riese, M.

doi:https://doi.org/10.5194/gmd-7-2895-2014

Articles | Volume 7, issue 6

https://doi.org/10.5194/gmd-7-2895-2014

© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/gmd-7-2895-2014

© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 7, issue 6

Model description paper

|

08 Dec 2014

Model description paper |

| 08 Dec 2014

Tropical troposphere to stratosphere transport of carbon monoxide and long-lived trace species in the Chemical Lagrangian Model of the Stratosphere (CLaMS)

R. Pommrich, R. Müller, J.-U. Grooß, P. Konopka, F. Ploeger, B. Vogel, M. Tao, C. M. Hoppe, G. Günther, N. Spelten, L. Hoffmann, H.-C. Pumphrey, S. Viciani, F. D'Amato, C. M. Volk, P. Hoor, H. Schlager, and M. Riese

Download

Final revised paper (published on 08 Dec 2014)
Supplement to the final revised paper
Preprint (discussion started on 08 Aug 2014)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

- Printer-friendly version

- Supplement

RC C1356: 'Review', Anonymous Referee #1, 11 Aug 2014
- AC C1845: 'Reply', Rolf Müller, 25 Sep 2014
RC C1549: 'Review of "Tropical troposphere to stratosphere transport of carbon monoxide and long-lived trace species in CLaMS"', Anonymous Referee #2, 31 Aug 2014
- AC C1838: 'Reply', Rolf Müller, 25 Sep 2014
SC C1633: 'a few concerns', Tao Wang, 09 Sep 2014
- AC C1849: 'Reply to Tao Wang', Rolf Müller, 25 Sep 2014

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Jens-Uwe Grooß on behalf of the Authors (07 Oct 2014) Author's response

ED: Publish subject to minor revisions (Editor review) (22 Oct 2014) by Klaus Gierens

Dear authors,

your paper is almost ready for publication. However, I have still two minor points that I would like to see improved. This is your description of the use of MOPITT on page 13. First you write "below about 4 km", then "measurements at 500 hPa" and finally (page 14) you mention a "thick layer (200-700 hPa; 3-12 km). This is quite confusing, and I think that the question of one of the reviewers is not sufficiently addressed, namely whether because of the "thick layer" some of the missing convection is implicit in the initialisation. Please rewrite this part of the text to avoid confusion.
The other point is on Page 21, last line. You say that pdfs cluster around the 1:1 line. For me it looks that the pdf peaks below the 1:1 line, although not far below. This might be due to the reported underestimation of the effects of convection and you could simply state this without making the paper weaker.

Please also correct the following technical errors:

Page 2, line 23. The two statements are contradicting each other, "good agreement with observations" and "too rapid upwelling". Please insert something like "however", "in spite of" or similar between the statements in order to soften the harsh contrast.

Page 3, line 25: "Annual and quasi-biennial".

Page 5 and several other occasions: I know that the word "validation" is very often used in our business, but I do not like it. It suggests something that does not happen. A "validated" model has simply survived a test and then it is more plausible and justified to assume that it is useful for certain applications, but it is in no way "valid". There is no truth available to test whether a model gives valid, i.e. true, answers. Please think of replacing this word here and at other locations by something more modest (e.g. tested model...).

Page 8, line 22: Plural of "aircraft" is "aircraft" not "aircrafts".

Page 15, line 22 and Page 16, line 4: replace "old" with "high" or "large". The age cannot be old, although the airmass can.

Page 17, line 15: "the tape head is written" is probably wrong (auf Deutsch: der Schreibkopf wird geschrieben). Perhaps you can write "the tape head is located at this special level".

Page 18, line19: remove comma after "CO".

Hide

AR by Rolf Müller on behalf of the Authors (27 Oct 2014) Author's response Manuscript

ED: Publish as is (30 Oct 2014) by Klaus Gierens

AR by Rolf Müller on behalf of the Authors (30 Oct 2014)

Short summary

A version of the chemical transport model CLaMS is presented, which features a simplified (numerically inexpensive) chemistry scheme. The model results using this version of CLaMS show a good representation of anomaly fields of CO, CH4, N2O, and CFC-11 in the lower stratosphere. CO measurements of three instruments (COLD, HAGAR, and Falcon-CO) in the lower tropical stratosphere (during the campaign TROCCINOX in 2005) have been compared and show a good agreement within the error bars.