ExoMars 2016 NOMAD Raw-level Data Product Collection

NOMAD is is a 3-channel spectrometer designed to perform high-sensitivity orbital identification of atmospheric components, concentration and temperature, their sources, loss, and cycles. It measures the sunlight reflected from the surface and atmosphere of Mars, and it analyses its wavelength spectrum to identify the components of the Martian atmosphere that may suggest a biological source. This spectrometer consists of three channels: solar occultation (SO), limb nadir and occultation (LNO), and ultraviolet and visible spectrometer (UVIS). The first two channels work in the infrared (2.2 to 4.3 μm); the third channel (UVIS) works in the UV-visible range (0.2 to 0.65 μm), which is able to measure ozone, sulphuric acid, and perform aerosol studies. Measurements are carried out during solar occultation, i.e. the instrument points toward the sunset as the orbiter moves toward or away the dark side of Mars. It also measures in nadir mode, i.e. looking directly at the sunlight reflected from the surface and atmosphere of Mars. The Principal Investigator is Ann Carine Vandaele, from the Belgian Institute for Space Aeronomy (BIRA). The raw data collection contains the raw science and housekeeping data from the instrument and the data is released publicly on a daily basis with a six month lag from the data being obtained. (Note LNO data is not yet publically available so can not be downloaded from any time period) Physically the collection is organised by science phase, then orbit range in groups of 100 orbits, then orbit. Different data types e.g. HK plus science from different channels may be mixed in this time related directory. A description of the raw data products can be found in the NOMAD Experiment to Archive ICD (EAICD). This can be found under documents in the user interface or via the Document Collection in the PSA ftp distribution.A quick start guide can also be found at: NOMAD Quick Start Guide