The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) is a novel remote sensing instrument combining an imaging infrared Fourier transform spectrometer with a highly flexible gimbal mount. Spectra with a unique spatial and spectral resolution are measured with a 2-D detector array. Air masses can be observed from different directions by turning the instrument's line of sight in the gimbal frame.
In December 2011 the instrument flew for the first time on the high flying Russian M-55 Geophysica research aircraft over Kiruna (Sweden). There was a very strong and cold polar vortex with several filamentary structures at its boundary which were within the operation radius of the aircraft. This thesis focuses on the retrieval of temperature and several important trace gases from measurements obtained during the ESSenCe campaign and compares them to 3-D model calculations of the atmosphere. The results show the presence of a filamentary structure of less than 1 km vertical extent, which is only visible due to the high vertical resolution of 300 m provided by GLORIA and is not fully resolved in the comparison data.
In summer 2012, GLORIA flew on the German HALO research plane during the TACTS and ESMVal campaigns. The large range of the aircraft allowed the inclusion of multiple closed loop flight tracts during the campaign, in which GLORIA made measurements with high spatiotemporal resolution. For the first time, it was possible to test the 3-D tomographic retrieval technique on GLORIA data. This technique yields 3-D trace gas fields with good horizontal resolution in every direction and thus information on very fine structures in trace gas distributions.