The solar occultation for ice experiment

Gordley, L. L.; Hervig, Mark E.; Fish, Chad; Russell, James M.; Bailey, S. M.; Cook, Jerry L.; Hansen, Scott; Shumway, Andrew; Paxton, Greg; Deaver, Lance E.; Marshall, Tom; Burton, Justin; Magill, Brian; Brown, Chris W.; Thompson, Earl; Kemp, John C.

doi:10.1016/j.jastp.2008.07.012

Cited by 130 publications

(116 citation statements)

References 21 publications

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“…Only 13 three-way colocations with standard deviations in all three instruments greater than 0.8 K were found, too small a number to draw meaningful conclusions from, and accordingly these results have been omitted. Comparisons were also undertaken between the three instruments shown, the Michelson Interferometer for Passive Atmospheric Sounding (MI-PAS, Fischer et al, 2000) and the Solar Occultation for Ice Experiment (SOFIE, Gordley et al, 2009). These two instruments have significantly coarser stratospheric vertical resolutions than SABER, HIRDLS, and COSMIC (∼3 km for MIPAS, ∼3.5 km for SOFIE), and accordingly gave significantly poorer comparative results for both analyses, with no significant correlations for their standard deviations, temperature perturbations or vertical wavelengths.…”

Section: Discussionmentioning

confidence: 99%

Intercomparisons of HIRDLS, COSMIC and SABER for the detection of stratospheric gravity waves

Rivas

Gille

2011

Atmos. Meas. Tech.

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Abstract. Colocated temperature profiles from the Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC), High Resolution Dynamics Limb Sounder (HIRDLS) and the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) mission are compared over the years 2006-2007 to assess their relative performances for the detection of stratospheric gravity waves. Two methods are used, one based on a simple comparison of the standard deviations and correlation coefficients of high-pass filtered profiles from each instrument, and the other based on Stockwell transform analyses of the profiles for vertical wavelength and temperature perturbation scales. It is concluded, when allowing for their different vertical resolution capabilites, that the three instruments reproduce each other's results for magnitude and vertical scale of perturbations to within their resolution limits in approximately 50 % of cases, but with a positive frequency and temperature bias in the case of COSMIC. This is possibly indicative of a slightly higher vertical resolution being available to the constellation than estimated.

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Section: Discussionmentioning

confidence: 99%

Intercomparisons of HIRDLS, COSMIC and SABER for the detection of stratospheric gravity waves

Rivas

Gille

2011

Atmos. Meas. Tech.

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“…Non-local thermodynamic equilibrium (nLTE) effects are minimized by measuring spectral bands where the atmospheric extinction is dominated by ground state transitions. However, for some of the SOFIE channels it is necessary to account for nLTE processes in the lower thermosphere and in the vicinity of the very cold polar summer mesopause region, where hot-bands contribute significantly to total band extinction (Gordley et al, 2009b). This is discussed in more detail in Sect.…”

Section: Fig 1 Solar Occultation Geometrymentioning

confidence: 99%

“…Using the solar image as a source along with precise pointing knowledge permits a reliable, consistent, and accurate long-term measurement of important species. For example, the Stratospheric Aerosol and Gas Experiment II (SAGE-II) (McCormick et al, 1989), monitored density, ozone, water, and aerosol for over 21 yr, and the Halogen Occultation Experiment (HALOE) (Russell et al, 1993), monitored these along with several halogen species and temperature as a function of pressure, T (P ), for over 14 yr. More recently, the Solar Occultation For Ice Experiment (SOFIE) (Gordley et al, 2009b), has achieved remarkable measurements of polar…”

Section: Introductionmentioning

confidence: 99%

Retrieval of temperature and pressure using broadband solar occultation: SOFIE approach and results

et al. 2011

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Abstract. Measurement of atmospheric temperature as a function of pressure, T (P ), is key to understanding many atmospheric processes and a prerequisite for retrieving gas mixing ratios and other parameters from solar occultation measurements. This paper gives a brief overview of the solar occultation measurement technique followed by a detailed discussion of the mechanisms that make the measurement sensitive to temperature. Methods for retrieving T (P ) using both broadband transmittance and refraction are discussed. Investigations using measurements of broadband transmittance in two CO 2 absorption bands (the 4.3 and 2.7 µm bands) and refractive bending are then presented. These investigations include sensitivity studies, simulated retrieval studies, and examples from SOFIE.

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“…The existence of impacting particles with halo radii ranging from 100 nm to 600 nm and solid nuclei having radii between 50 and 200 nm was claimed (Hemenway et al, 1964;Ferry and Farlow, 1972). However, this claim is in conflict with early optical investigations (Gadsden and Schröder 1989) and with what is now known about the sizes of NLC/PMSE particles (von Cossart et al, 1999;Gumbel et al, 2001;Russell et al, 2009;Hervig et al, 2012). More recent attempts to return the MSPs have occurred (Gumbel, 2005, Hedin et al, 2014, but so far no conclusive results have been reported.…”

Section: Sample Return With the Meteoric Smoke Sampler (Mess)mentioning

confidence: 87%

“…Traditionally each NLC/PMSE particle was thought to consist almost entirely of water ice (Hervig et al, 2001;Eremenko et al, 2005;Gordley et al, 2009), which possibly accumulated around a single MSP that served as the condensation nucleus (Plane, 2003;Rapp and Thomas, 2006;Plane, 2011). However, recent observations show that the NLC/PMSE particles probably act as sinks for metallic atoms injected into the upper mesosphere by meteors (Plane, 2004;Lübken and Höffner, 2004;She et al, 2006).…”

Section: Dustymentioning

confidence: 99%

The Tromsø programme of in situ and sample return studies of mesospheric nanoparticles

Havnes

Antonsen

Hartquist

et al. 2015

Journal of Atmospheric and Solar-Terrestrial Physics

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We review some of the work performed over the past two decades with rocket-borne detectors to study mesospheric dust or nanoparticles, including meteoric smoke particles (MSPs) and water ice particles in the mesosphere. We focus on regions in which noctilucent clouds (NLCs) and polar summer mesospheric echoes (PMSEs) occur. Our primary emphasis is on several detectors designed, built and used by the Tromsø group and collaborators, and results obtained with them. These include the DUSTY, MUDD and ICON probes, the latter for which the results of laboratory tests are presented. However, we also mention, but do not address in detail, some of the investigations conducted by others and describe very briefly our preparations for sample return measurements. We consider the importance of accounting for the secondary charging occurring in detectors as nanoparticles strike them, evidence that MSPs fill up to several percent of the volume in icy particles and measurements of the size distribution of the MSPs.

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The solar occultation for ice experiment

Cited by 130 publications

References 21 publications

Intercomparisons of HIRDLS, COSMIC and SABER for the detection of stratospheric gravity waves

Intercomparisons of HIRDLS, COSMIC and SABER for the detection of stratospheric gravity waves

Retrieval of temperature and pressure using broadband solar occultation: SOFIE approach and results

The Tromsø programme of in situ and sample return studies of mesospheric nanoparticles

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