FTS Data

Level 0: Interferograms

Level 1: Spectra

Level 2: Temperature, Pressure and Volume Mixing Ratio (VMR) profiles as a function of altitude

ACE-FTS Level 2 version 1.0, 2.0 and 2.1 datasets were each processed for a limited number of select occultations. ACE-FTS Level 2 version 3.0 is the current processing version.

Level 2 Data include VMR profiles for the following trace gas molecules:

Version 1.0: H2O, O3, N2O, CO, CH4, NO, NO2, HNO3, HF, HCl, N2O5, ClONO2, CCl2F2, CCl3F, COF2, CHF2Cl, HDO, SF6

Version 2.0: H2O, O3, N2O, CO, CH4, NO, NO2, HNO3, HF, HCl, N2O5, ClONO2, CCl2F2, CCl3F, COF2, CHF2Cl, SF6, OCS, HCN, CF4, CH3Cl, C2H2, C2H6, N2

Version 2.1: H2O, O3, N2O, CO, CH4, NO, NO2, HNO3, HF, HCl, N2O5, ClONO2, CCl2F2, CCl3F, COF2, CHF2Cl, SF6, OCS, HCN, CF4, CH3Cl, C2H2, C2H6, N2, ClO

Version 2.2: H2O, O3, N2O, CO, CH4, NO, NO2, HNO3, HF, HCl, N2O5, ClONO2, CCl2F2, CCl3F, COF2, CHF2Cl, HDO, SF6, OCS, HCN, CF4, CH3Cl, C2H2, C2H6, N2, ClO, as well as isotopologues for some of these molecules

Version 3.0: H2O, O3, N2O, CO, CH4, NO, NO2, HNO3, HF, HCl, N2O5, ClONO2, CFC-12 (CCl2F2), CFC-11 (CCl3F), COF2, HCFC-22 (CHClF2), HDO, SF6, OCS, HCN, CF4, CH3Cl, C2H2, C2H6, N2, CO2, H2CO, H2O2, O2, HO2NO2, HCOOH, CH3OH, COCl2, CCl4, COClF, HCFC-142b (ClF2C-CH3), CFC-113 (Cl2FC-CClF2), HCFC-141b (Cl2FC-CH3), as well as isotopologues for some of these molecules

MAESTRO Data

NO2 and O3 profiles are retrieved from the UV spectrometer at the measurement tangent altitudes and interpolated at the regular tangent height grid.

O3 profiles are retrieved from the VISIBLE spectrometer at the measurement tangent altitudes and interpolated at the regular tangent height grid.


Access to the current Level 2 ACE data (version 3.0) is only available to ACE Science Team members and other authorized users but version 1.0 and version 2.2+updates are available via the Public Dataset page.