Instrument concept of the imaging Fourier transform spectrometer GLORIA

Friedl-Vallon, Felix; Gulde, T.; Hase, Frank; Kleinert, Anne; Kulessa, T.; Maucher, G.; Neubert, Tom; Olschewski, F.; Piesch, C.; Preusse, Peter; Rongen, Heinz; Sartorius, C.; Schneider, H. A.; Schönfeld, A.; Tan, V.; Bayer, N.; Blank, J.; Dapp, R.; Ebersoldt, A.; Fischer, H.; Graf, F.; Guggenmoser, T.; Höpfner, Michael; Kaufmann, Martín; Kretschmer, Erik; Latzko, Thomas; Nordmeyer, H.; Oelhaf, H.; Orphal, J.; Riese, Martin; Schardt, G.; Schillings, J.; Sha, Mahesh Kumar; Suminska-Ebersoldt, O.; Ungermann, Jörn

doi:10.5194/amtd-7-2301-2014

Cited by 14 publications

(10 citation statements)

References 38 publications

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“…Here, due to the particular flight strategy imposed by the remote‐sensing instruments Gimbaled Limb Observer for Radiance Imaging of the Atmosphere (GLORIA, see e.g., Friedl‐Vallon et al. (2014), Riese et al. (2014)) and ALIMA (Airborne Lidar for Middle Atmosphere research, see Rapp et al.…”

Section: Research Aircraft Data and Analysis Methodologymentioning

confidence: 99%

High‐Resolution Aircraft Observations of Turbulence and Waves in the Free Atmosphere and Comparison With Global Model Predictions

Dörnbrack¹,

Bechtold

Schumann³

2022

JGR Atmospheres

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Kim et al. (2022), but it is also a fascinating topic for basic research because CAT regions are places where energy dissipates and momentum is deposited and where tracers can be irreversibly exchanged between different layers of the free atmosphere, for example, Holton et al. (1995), Gettelman et al. (2011. Improving reliable CAT predictions depends on observations made particularly in the upper troposphere and lower stratosphere. There is often a lack of thermodynamic and wind observations at the horizontal

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Section: Research Aircraft Data and Analysis Methodologymentioning

confidence: 99%

High‐Resolution Aircraft Observations of Turbulence and Waves in the Free Atmosphere and Comparison With Global Model Predictions

Dörnbrack¹,

Bechtold

Schumann³

2022

JGR Atmospheres

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“…It is a remote sensing instrument, especially designed to measure vertical profiles of trace gases like water vapor with high accuracy and with a high spatial resolution in the UTLS. Details about GLORIA are discussed by Friedl‐Vallon et al () and Riese et al (). For the comparison in this study, the cloud index (Spang et al, ) and retrievals of water vapor (H 2 O ) and temperature based on “chemistry” mode measurements are used.…”

Section: Case Studymentioning

confidence: 99%

A Process Study on Thinning of Arctic Winter Cirrus Clouds With High‐Resolution ICON‐ART Simulations

et al. 2019

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In this study, cloud‐resolving simulations of a case study for a limited area of the hibernal Arctic were performed with the atmospheric modeling system ICON‐ART (ICOsahedral Nonhydrostatic‐Aerosol and Reactive Trace gases). A thorough comparison with data both from satellite as well as aircraft measurement is presented to validate the simulations. In addition, the model is applied to clarify the microphysical processes occurring when introducing artificial aerosol particles into the upper troposphere with the aim of modifying cirrus clouds in the framework of climate engineering. Former modeling studies investigating the climate effect of this method were performed with simplifying assumptions and much coarser resolution, reaching partly contradicting conclusions concerning the method's effectiveness. The primary effect of seeding is found to be a reduction of ice crystal number concentrations in cirrus clouds, leading to increased outgoing longwave radiative fluxes at the top of the atmosphere, thereby creating a cooling effect. Furthermore, a secondary effect is found, as ice crystals formed from the injected seeding aerosol particles lead to enhanced riming of cloud droplets within the planetary boundary layer. This effectively reduces the coverage of mixed‐phase clouds, thus generating additional cooling by increased upward longwave radiative fluxes at the surface. The efficacy of seeding cirrus clouds proves to be relatively independent from the atmospheric background conditions, scales with the number concentrations of seeding particles, and is highest for large aerosol particles.

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“…The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA; Friedl-Vallon et al, 2014) is a cooled Fourier transform infrared (FTIR) spectrometer which has been designed to fly on board the German research aircraft HALO (Krautstrunk and Giez, 2012) or the Russian M55 Geophysica (Myasichev Design Bureau (MDB), 2002). It measures the infrared emission of atmospheric species in the spectral range from 780 to 1400 cm −1 .…”

Section: Introductionmentioning

confidence: 99%

The mechanical and thermal setup of the GLORIA spectrometer

et al. 2015

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Abstract. The novel airborne Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) measures infrared emission of atmospheric trace constituents. GLO-RIA comprises a cooled imaging Fourier transform spectrometer, which is operated in unpressurized aircraft compartments at ambient temperature. The whole spectrometer is pointed by the gimbal towards the atmospheric target. In order to reach the required sensitivity for atmospheric emission measurements, the spectrometer optics needs to operate at a temperature below 220 K. A lightweight and compact design is mandatory due to limited space and high agility requirements. The cooled optical system needs to withstand high pressure and temperature gradients, humidity, and vibrations. A new cooling system based on carbon dioxide and liquid nitrogen combined with high-performance insulation has been developed to meet the mechanical, thermal, and logistical demands. The challenging mechanical and spatial requirements lead to the development of a novel rigid linear slide design in order to achieve the large optical path difference for high spectral resolution. This paper describes the mechanical and thermal setup of GLORIA and presents the performance results on two different research aircrafts.

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Instrument concept of the imaging Fourier transform spectrometer GLORIA

Cited by 14 publications

References 38 publications

High‐Resolution Aircraft Observations of Turbulence and Waves in the Free Atmosphere and Comparison With Global Model Predictions

High‐Resolution Aircraft Observations of Turbulence and Waves in the Free Atmosphere and Comparison With Global Model Predictions

A Process Study on Thinning of Arctic Winter Cirrus Clouds With High‐Resolution ICON‐ART Simulations

The mechanical and thermal setup of the GLORIA spectrometer

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