Interactive comment on “Validation of ACE-FTS

Interactive comment on “Validation of ACE-FTS

General comments: This paper gives a detailed validation of the N2O measurements from ACE-FTS, a new instrument that was launched onboard the ACE satellite on 12 August 2003. The scope of the paper is therefore of great interest for further use of these satellite data. The authors compare ACE-FTS v2.2 measurements with products from many different platforms (satellite, aircraft, balloon-borne a...

Interactive comment on “New temperature and pressure retrieval algorithm for high-resolution infrared solar occultation spectroscopy: analysis and validation against ACE-FTS and COSMIC” by K. S. Olsen et al

The Referee makes several strong comments about the clarity of the mathematical basis for the algorithm. We understand that our presentation may not be clear enough to another reader, and thank the referee for identifying cases where clarification is needed. Parts of the discussion were made purposefully brief to decrease the length of the manuscript, which was not the best approach. We have ad...

Interactive comment on “Validation of ACE-FTS satellite data in the upper troposphere/lower stratosphere (UTLS) using non-coincident measurements” by M. I. Hegglin et al

a) It is not true that satellites are the only means to get information on tracers at global scale. This is true for CO but not for O3 and H2O. O3 climatologies are available from a large number of ozonesondes in both the UT and the LS particularly in the NH, coincident in time with ACE-FTS, which could be used for evaluating the performances of the instrument, as done for SAGE, HALOE etc. Simi...

Interactive comment on “Simultaneous atmospheric measurements using two Fourier transforminfrared spectrometers at the Polar Environment Atmospheric ResearchLaboratory during spring 2006, and comparisons with the AtmosphericChemistry Experiment-Fourier Transform Spectrometer” by D. Fu et al

A somewhat weak point of the paper is that a clearly defined focus is not apparent: In the introduction it is said "..., it is nessessary to understand the difference between ground-based instruments that are used in satellite validation studies and this is the focus of this paper." According to the title, the validation of the ACE-FTS seems to be of equal importance. Judging from the length of...

Interactive comment on “Properties of polar stratospheric clouds obtained by combined ACE-FTS and ACE-Imager extinction measurements” by A. Y. Zasetsky et al