DOI: 10.5281/zenodo.7082889
title: Supporting Information for "Nine Martian Years of polar caps observations by SPICAM-IR"

description: This dataset contains several additional figures and data for the "Nine Martian Years of polar caps observations by SPICAM-IR". Data and additional figures play special role in this publication, since we use a lot of different representations (seasonal, spatial and cap edges) of sparse dataset in our work. It also includes processed SPICAM-IR CO<sub>2</sub> ice equivalent width and water index for orbits without artifacts or distortions and with normal signal-to-noise ratio (&gt;20).<br> <strong>Data Set S1 </strong><br> This Data Set (spicam_obs.csv) contains CO<sub>2</sub> ice equivalent width and water index for orbits without artifacts or distortions and with normal signal-to-noise ratio (&gt;20) and all required observational geometry in a form of csv table. In this file there are 13 following columns: orbit: name of orbit as in PSA 1B files spec_num: number of spectrum in this file starting from zero lat: center latitude of field of view lon: center longitude of field of view ls: solar longitude of observation local_time: local time of observation incidence: incidence angle alt_spc: altitude of observation, which determines FOV size co2ice_index: equivalent width of CO ice 1.43 m band h2oice_index: index of 1.5 m water ice band albedo: albedo at 1.37 m, out of major absorption bands snr: signal-to-noise ratio measure around 1.37 m, out of major absorption bands martian_year: Martian Year Using this dataset one can plot all of the figures in the original paper, except for spectra. <strong>Data Set S2</strong><br> This Data Set (figure4.txt) contains data from Figure 4 in the original paper. Description of the figure:<br> Diversity of ice spectra on south pole. (Blue on picture): Slab ice in winter, Ls: 144.15, latitude: -58.7, longitude: 257.58, orbit: 10902A01, 1.43 µm band width: 30.5 nm; (Orange on picture): Bright CO2 ice, Ls: 253.08, latitude: -86.23, longitude: 315.70, orbit: 1943A01, 1.43 µm band width: 16.4 nm; (Green on picture): Cryptic region with almost no CO<sub>2</sub> ice, Ls: 213.12, latitude: -82.52, longitude: 122.06, orbit: 4169A01, 1.43 µm band width: 1.4 nm; (Red on picture): Water ice outside of cap in winter in the Hellas basin, Ls: 117.01, latitude: -42.97, longitude: 83.266, orbit: 20144A03, water ice index: 0.47; (Purple on picture): South permanent cap in the middle of summer, Ls: 322.85, latitude: -86.06, longitude: 311.33, orbit: 19015A01, 1.43 µm band width: 12.1 nm; (Brown on picture): Fine grained CO2 ice in the spring, Ls: 195.30, latitude: -64.90, longitude: 298.47, orbit: 8867A01, 1.43 µm band width: 6.6 nm <strong>Data Set S3</strong><br> This Data Set (figure5.txt) contains data from Figure 5 in the original paper. Description of the figure:<br> Diversity of ice spectra on north pole and spectrum of water ice clouds. (Blue on picture): Deep CO2 ice on North pole, Ls: 14.48, latitude: 85.72, longitude: 134.13, orbit: 5161A01, 1.43 µm band width: 20.6 nm; (Orange on picture): ”Cryptic”-like spectra in the end of winter, Ls: 332.38, latitude: 57.47, longitude: 82.96, orbit: 19074A01, 1.43 µm band width: 10.45 nm; (Green on picture): Spectrum with high water ice index on North pole, Ls: 107.88, latitude: 84.74, longitude: 34.69, orbit: 1002A01, water ice index: 0.758; (Red on picture): Water ice cloud in aphelion cloud belt, Ls: 114.94, latitude: 11.98, longitude: 254.08, orbit: 8336A01, water ice index: 0.146. <strong>Data Set S4</strong><br> This Data Set (figure6_bottom.txt, figure6_middle.txt, figure6_top.txt) contains data from Figure 6 in the original paper. Description of the figure:<br> Seasonal maps of CO<sub>2</sub> 1.43 µm equivalent width (top), water ice index (middle), and water ice index in log scale for the morning (bottom). <strong>Data Set S5</strong><br> This Data Set (figure9.txt) contains data from Figure 9 in the original paper. Description of the figure:<br> Outer crocus line for the south cap for all Martian Years combined. Orange points (on the figure) represent anti-cryptic part (from 260° to 60° east longitude) and cryptic part (from 60° to 260° east longitude). <strong>Data Set S6</strong><br> This Data Set (figure10.txt) contains data from Figure 10 in the original paper. Description of the figure:<br> Outer crocus line for the north cap for all Martian Years combined. Different colors (on the figure) represent different Martian Years.