A ground-based spectrometer equipped with an InGaAs array for routine observations of OH(3-1) rotational temperatures in the mesopause region

Schmidt, Carsten; Höppner, Kathrin; Bittner, Michael

doi:10.1016/j.jastp.2013.05.001

Cited by 57 publications

(59 citation statements)

References 32 publications

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“…geographical correction of the images for the standard set-up with 45 • zenith angle are presented. The data of FAIM 1 are compared to GRIPS airglow spectrometric observations Schmidt et al, 2013). In comparison with two such GRIPS instruments, one recording the 1.27 µm O 2 (0-0) emission and one recording the bright OH(3-1)-and OH(4-2) emissions, it was shown that O 2 dominates the FAIM 1 data only during a rather short period of time after sunset.…”

Section: Discussionmentioning

confidence: 99%

“…These instruments usually acquire airglow spectra between 1.5 and 1.6 µm, but they can be adjusted to record any other part of the airglow spectrum between approximately 0.9 and 1.65 µm. Usually, OH(3-1)-P-branch spectra acquired with these spectrometers are used to derive rotational temperatures with a temporal resolution of 5 s (GRIPS 13) or 15 s (GRIPS 16) (see Schmidt et al (2013) for further details). For the investigation of the FAIM performance both spectrometers GRIPS 13 and GRIPS 16 were operated parallel to FAIM 1.…”

Section: Instrumentation and Operationmentioning

confidence: 99%

“…ENVISAT-SCIAMACHY; Bovensmann et al, 1999;von Savigny, 2015 and references therein) or ground-based (e.g. Nakamura et al, 1999;Schmidt et al, 2013;Noll et al, 2014). Airglow…”

Section: Introductionmentioning

confidence: 99%

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A fast SWIR imager for observations of transient features in OH airglow

et al. 2016

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Section: Discussionmentioning

confidence: 99%

Section: Instrumentation and Operationmentioning

confidence: 99%

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A fast SWIR imager for observations of transient features in OH airglow

et al. 2016

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“…Within the framework of the Atmospheric dynamics Research and InfraStructure in Europe (ARISE, http://arise-project.eu) project, a recent study has focused on comparisons between measurements from ground-based facilities and ECMWF analysis models over the time span ranging from July 2012 to May 2013. Measurements from colocated Rayleigh scatter lidar (temperature in the 30-70 km range [Keckhut et al, 2011]), mesospheric airglow (temperature around the mesopause region [Schmidt et al, 2013]), and Doppler radiometer (horizontal winds between 40 and 70 km [Rüfenacht et al, 2012]) facilities have been compared to the ECMWF analysis (up to 78 km altitude). It has been found that significant biases in temperatures and horizontal winds exist, primarily at higher altitudes and at shorter timescales.…”

Section: 1002/2014jd021632mentioning

confidence: 99%

Evaluation of wind and temperature profiles from ECMWF analysis on two hemispheres using volcanic infrasound

et al. 2014

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In this paper, we evaluate vertical wind and temperature profiles that are produced by the European Centre for Medium‐Range Weather Forecasts (ECMWF) atmospheric analysis. The evaluation is carried out on both hemispheres: we make use of stratospheric infrasound arrivals from Mount Etna (37°N) and Mount Yasur (22°S). The near‐continuous, high activity of both volcanoes permits the study of stratospheric propagation along well‐defined paths with a time resolution ranging from hours to multiple years. Infrasound observables are compared to theoretical estimates obtained from acoustic propagation modeling using the ECMWF analysis. While a first‐order agreement is found for both hemispheres, we report on significant discrepancies around some of the equinox periods and other intervals during which the atmosphere is in a state of transition and dynamical oscillations of the atmosphere dominate over the general circulation. We present an inversion study in which we make use of measured trace velocity estimates to estimate first‐order effective sound speed model updates in a Bayesian framework. Deviations from the a priori models around the stratopause up to 10% (≈ 30 m s−1) are estimated. Such updates are in line with the results from comparisons between ECMWF analysis and observations from lidar and microwave Doppler spectroradiometer facilities that were colocated during the course of the 2012–2013 Atmospheric dynamics Research and InfraStructure in Europe (ARISE) measurement campaign.

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“…Concerning its basic components and its data processing, GRIPS 14 is identical to the GRIPS instruments described by Schmidt et al (2013). The technical layout of the scanning mirror is designed to result in three FoV forming an equilateral triangle (zenith angles: 30°) in the mesopause region with the fourth FoV being in the center of the triangle, in zenith direction.…”

Section: Infrared Spectrometer Gripsmentioning

confidence: 99%

Derivation of horizontal and vertical wavelengths using a scanning OH(3-1) airglow spectrometer

Wüst

Offenwanger

Schmidt

et al. 2017

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For the first time, we present an approach to derive zonal, meridional and vertical wavelengths as well as periods of gravity waves based on only one OH* spectrometer addressing one vibrational-rotational transition. Knowledge of these parameters 15 is a precondition for the calculation of further information such as the wave group velocity vector.OH(3-1) spectrometer measurements allow the analysis of gravity wave periods, but spatial information cannot necessarily be deduced. We use a scanning spectrometer and the harmonic analysis to derive horizontal wavelengths at the mesopause above Oberpfaffenhofen (48.09°N, 11.28°E), Germany for 22 nights in 2015. Based on the approximation of the dispersion relation for gravity waves of low and medium frequency and additional horizontal wind information, we calculate vertical 20 wavelengths afterwards. The mesopause wind measurements nearest to Oberpfaffenhofen are conducted at Collm (51.30°N, 13.02°E), Germany, ca. 380 km northeast of Oberfpaffenhofen by a meteor radar.In order to check our results, vertical temperature profiles of TIMED-SABER (Thermosphere Ionosphere Mesosphere Energetics Dynamics, Sounding of the Atmosphere using Broadband Emission Radiometry) overpasses are analysed with respect to the dominating vertical wavelength. 25Atmos. Meas. Tech. Discuss., https://doi

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A ground-based spectrometer equipped with an InGaAs array for routine observations of OH(3-1) rotational temperatures in the mesopause region

Cited by 57 publications

References 32 publications

A fast SWIR imager for observations of transient features in OH airglow

A fast SWIR imager for observations of transient features in OH airglow

Evaluation of wind and temperature profiles from ECMWF analysis on two hemispheres using volcanic infrasound

Derivation of horizontal and vertical wavelengths using a scanning OH(3-1) airglow spectrometer

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