Global distribution of ozone vertical profiles retrieved from NOMAD-UVIS/TGO, presented in Piccialli et al. 2023

This dataset is presented in "Ozone observed by TGO/NOMAD-UVIS solar occultation: an inter-comparison of three retrieval methods" by A. Piccialli, A.C. Vandaele, et al. 2023.: https://doi.org/10.1029/2022EA002429) Each file name indicates the retrieval method: + FOEM: Full occultation Optimal Estimation Method + OP: Onion Peeling + DOP: Direct Onion Peeling Files are in the HDF5 format. Each file contains: Geometry: + LST = local solar time [hrs] + Ls = solar longitude [degree] + lat = latitude [degree] + lon = longitude [degree] + orbit = file name of each occultation + day = day of observation + month = month of observation + year = year of observation Science + For each entry: [number of columns = number of occultations analyzed, number of rows = 600 (altitude grid)] + Nd_O3 = ozone number density [cm-3] + Nd_O3_Err = error on ozone number density [cm-3] + z = altitude above aeroid [km] Filtering (present only if relevant to the method): + DoF = Degree of Freedom + DL = detection limit [cm-3] + chi2_O3 = chi2 of the retrieval including ozone + chi2_no_O3 = chi2 of the retrieval without ozone The filtering criteria Delta_chi2 described in our paper is derived as: + Delta_chi2 = chi2_no_O3/chi2_O3