The High-Resolution Dynamics Limb Sounder (HIRDLS) experiment on AURA

Gille, J. C.; Barnett, J. J.; Whitney, John G.; Dials, Michael A.; Woodard, Douglas; Rudolf, Wayne; Lambert, A.; Mankin, William G.

doi:10.1117/12.507657

Cited by 62 publications

(49 citation statements)

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“…The orbit altitude and orbit inclination of Aura are 710 km and 98.2 • , respectively. The HIRDLS instrument has a fixed view angle of 180 + 47 = 227 • , which leads to a latitude coverage from about 63 • S to about 80 • N. More detailed information about the HIRDLS instrument can be found, for instance, in Gille et al (2003Gille et al ( , 2008.…”

Section: Hirdls Instrumentmentioning

confidence: 99%

A comprehensive observational filter for satellite infrared limb sounding of gravity waves

Trinh¹,

Kalisch²,

Preusse³

et al. 2015

Atmos. Meas. Tech.

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Abstract. This paper describes a comprehensive observational filter for satellite infrared limb sounding of gravity waves. The filter considers instrument visibility and observation geometry with a high level of accuracy. It contains four main processes: visibility filter, projection of the wavelength on the tangent-point track, aliasing effect, and calculation of the observed vertical wavelength. The observation geometries of the SABER (Sounding of the Atmosphere using Broadband Emission Radiometry) and HIRDLS (High Resolution Dynamics Limb Sounder) are mimicked. Gravity waves (GWs) simulated by coupling a convective GW source (CGWS) scheme and the gravity wave regional or global ray tracer (GROGRAT) are used as an example for applying the observational filter. Simulated spectra in terms of horizontal and vertical wave numbers (wavelengths) of gravity wave momentum flux (GWMF) are analyzed under the influence of the filter. We find that the most important processes, which have significant influence on the spectrum are the visibility filter (for both SABER and HIRDLS observation geometries) and aliasing for SABER and projection on tangent-point track for HIRDLS. The vertical wavelength distribution is mainly affected by the retrieval as part of the "visibility filter" process. In addition, the short-horizontalscale spectrum may be projected for some cases into a longer horizontal wavelength interval which originally was not populated. The filter largely reduces GWMF values of very short horizontal wavelength waves. The implications for interpreting observed data are discussed.

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Section: Hirdls Instrumentmentioning

confidence: 99%

A comprehensive observational filter for satellite infrared limb sounding of gravity waves

Trinh¹,

Kalisch²,

Preusse³

et al. 2015

Atmos. Meas. Tech.

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“…In our study, we use HIRDLS version V006 (see also Gille et al, 2011) and SABER version v2.0 data. Detailed information about the HIRDLS instrument, temperature retrieval and vertical resolution is given, for example, in Gille et al (2003), , Barnett et al (2008), or Wright et al (2011). For SABER, details about the instrument are given, for example, in Mlynczak 20 (1997), or Russell et al (1999).…”

Section: The Satellite Instruments Hirdls and Sabermentioning

confidence: 99%

GRACILE: A comprehensive climatology of atmospheric gravity wave parameters based on satellite limb soundings

Ern¹,

Trinh²,

Preusse³

et al. 2018

Preprint

Self Cite

106

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Abstract. Gravity waves are one of the main drivers of atmospheric dynamics. The spatial resolution of most global atmospheric models, however, is too coarse to properly resolve the small scales of gravity waves, which range from tens to a few thousand kilometers horizontally, and from below 1 km to tens of kilometers vertically. Gravity wave source processes involve even smaller scales. Therefore, general circulation models (GCMs) and chemistry climate models (CCMs) usually parametrize the effect of gravity waves on the global circulation. These parametrizations are very simplified. For this reason, comparisons 5 with global observations of gravity waves are needed for an improvement of parametrizations and an alleviation of model biases.We present a gravity wave climatology based on atmospheric infrared limb emissions observed by satellite (GRACILE).GRACILE is a global data set of gravity wave distributions observed in the stratosphere and the mesosphere by the infrared limb sounding satellite instruments High Resolution Dynamics Limb Sounder (HIRDLS) and Sounding of the Atmosphere 10 using Broadband Emission Radiometry (SABER). Typical distributions (zonal averages and global maps) of gravity wave vertical wavelengths and along-track horizontal wavenumbers are provided, as well as gravity wave temperature variances, potential energies and absolute momentum fluxes. This global data set captures the typical seasonal variations of these parameters, as well as their spatial variations. The GRACILE data set is suitable for scientific studies, and it can serve for comparison with other instruments (ground based, airborne, or other satellite instruments) and for comparison with gravity wave distri-15 butions, both resolved and parametrized, in GCMs and CCMs.

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“…Like MLS, the HIRDLS instrument (e.g., Gille et al, 2003) was launched on NASA's Aura satellite. From January 2005 until March 2008 HIRDLS observed atmospheric infrared radiances in limb-viewing geometry.…”

Section: The Hirdls Instrumentmentioning

confidence: 99%

Satellite observations of middle atmosphere gravity wave absolute momentum flux and of its vertical gradient during recent stratospheric warmings

Ern¹,

Trinh²,

Kaufmann³

et al. 2016

Atmos. Chem. Phys.

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Abstract. Sudden stratospheric warmings (SSWs) are circulation anomalies in the polar region during winter. They mostly occur in the Northern Hemisphere and affect also surface weather and climate. Both planetary waves and gravity waves contribute to the onset and evolution of SSWs. While the role of planetary waves for SSW evolution has been recognized, the effect of gravity waves is still not fully understood, and has not been comprehensively analyzed based on global observations. In particular, information on the gravity wave driving of the background winds during SSWs is still missing.

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The High-Resolution Dynamics Limb Sounder (HIRDLS) experiment on AURA

Cited by 62 publications

References 0 publications

A comprehensive observational filter for satellite infrared limb sounding of gravity waves

A comprehensive observational filter for satellite infrared limb sounding of gravity waves

GRACILE: A comprehensive climatology of atmospheric gravity wave parameters based on satellite limb soundings

Satellite observations of middle atmosphere gravity wave absolute momentum flux and of its vertical gradient during recent stratospheric warmings

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