The Ozone Hole Breakup in September 2002 as Seen by SCIAMACHY on ENVISAT

Savigny, Christian von; Rozanov, Alexei; Bovensmann, H.; Eichmann, Kai‐Uwe; Noël, Stefan; Розанов, В. В.; Sinnhuber, Björn-Martin; Weber, Mark; Burrows, J. P.; Kaiser, J. W.

doi:10.1175/jas-3328.1

Cited by 78 publications

(61 citation statements)

References 48 publications

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“…Santacesaria et al, 2001). Satellite remote sensing techniques to detect PSCs include solar occultation (McCormick et al, 1989;Fromm et al, 1997;Nedoluha et al, 2003), stellar occultation (Vanhellemont et al, 2005), limb scattering (von Savigny et al, 2005a), and IR emission spectroscopy (Spang et al, 2005). Groundbased measurements can provide continuous observations with high temporal resolution, but are limited to a certain location.…”

Section: Introductionmentioning

confidence: 99%

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Detection and mapping of polar stratospheric clouds using limb scattering observations

et al. 2005

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Abstract. Satellite-based measurements of Visible/NIR limb-scattered solar radiation are well suited for the detection and mapping of polar stratospheric clouds (PSCs). This publication describes a method to detect PCSs from limb scattering observations with the Scanning Imaging Absorption spectroMeter for Atmospheric CartograpHY (SCIA-MACHY) on the European Space Agency's Envisat spacecraft. The method is based on a color-index approach and requires a priori knowledge of the stratospheric background aerosol loading in order to avoid false PSC identifications by stratospheric background aerosol. The method is applied to a sample data set including the 2003 PSC season in the Southern Hemisphere. The PSCs are correlated with coincident UKMO model temperature data, and with very few exceptions, the detected PSCs occur at temperatures below 195-198 K. Monthly averaged PSC descent rates are about 1.5 km/month for the −50 • S to −75 • S latitude range and assume a maximum between August and September with a value of about 2.5 km/month. The main cause of the PSC descent is the slow descent of the lower stratospheric temperature minimum.

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Section: Introductionmentioning

confidence: 99%

“…First results on PSC measurements with SCIAMACHY limb scattering observations were already presented in von Savigny et al (2005a). In this paper we present a more comprehensive description of the PSC detection method and its performance using the 2003 Southern Hemisphere (SH) PSC season as a sample data set.…”

Section: Introductionmentioning

confidence: 99%

Detection and mapping of polar stratospheric clouds using limb scattering observations

et al. 2005

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“…This is achieved by measuring light from air masses at different tangent heights (THs) in a vertical scanning sequence and combining the measurements of all THs in an inversion algorithm. Several retrieval algorithms exist, for ENVISAT-SCIAMACHY limb measurements of scattered sunlight (see for example Sioris et al, 2004;Rozanov et al, 2005;von Savigny et al, 2005;Sioris et al, 2006;Puķīte et al, 2006;. Further, it is possible to acquire not only vertically but…”

Section: Introductionmentioning

confidence: 99%

The effect of horizontal gradients and spatial measurement resolution on the retrieval of global vertical NO<sub>2</sub> distributions from SCIAMACHY measurements in limb only mode

et al. 2010

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Abstract. Limb measurements provided by the Scanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) on the ENVISAT satellite allow retrieving stratospheric profiles of various trace gases on a global scale. Combining measurements of the same air volume from different viewing positions along the orbit, a tomographic approach can be applied and 2-D distribution fields of stratospheric trace gases can be acquired in one inversion. With this approach, it is possible to improve the accounting for the effect of horizontal gradients in the trace gas distribution on the profile retrieval. This was shown in a previous study for the retrieval of NO 2 and OClO profiles in the Arctic region near the polar vortex boundary.In this study, the tomographic retrieval is applied on measurements during special limb-only orbits performed on 14 December 2008. For these orbits the distance between consecutive limb scanning sequences was reduced to ∼3.3 • of the orbital circle (i.e. more than two times with respect to the nominal operational mode). Thus, the same air volumes are scanned successively by more than one scanning sequence also for midlatitudes and the tropics. It is found that the profiles obtained by the tomographic 2-D approach show significant differences to those obtained by the 1-D approach. In particular, for regions close to stratospheric transport barriers (i.e. near to the edge of the polar vortex and subtropical transport barrier) up to 50% larger or smaller NO 2 numberCorrespondence to: J. Puķīte (janis.pukite@mpic.de) densities (depending on the sign of the gradient along the line of sight) for altitudes below the peak of the profile (around 20 km) are obtained.The limb-only measurements allow examining the systematic error if the horizontal gradient is not accounted for, and studying the impact of the gradient strength on the profile retrieval on a global scale. The findings for the actual SCIAMACHY observations are verified by sensitivity studies for simulated data for which the NO 2 distributions to be retrieved are known in advance. In addition, the impact of the horizontal distance between consecutive limb scanning sequences on the quality of the tomographic 2-D retrieval is investigated and a possibility to take into account the horizontal gradients by an interpolation approach is studied.

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“…This novel remote sensing technique allows daily near-global measurements of the atmospheric composition from space with a vertical resolution Correspondence to: A. Rozanov (alexei.rozanov@iup.physik.uni-bremen.de) of 2-3 km (McPeters et al, 2000;von Savigny et al, 2003von Savigny et al, , 2005bRozanov et al, 2005a).…”

Section: Introductionmentioning

confidence: 99%

“…In the current study version 3.0 of the DLR retrieval processor was employed. The second algorithm based on the so-called triplet method was developed at the Institute of Environmental Physics of the University of Bremen to perform the routine retrieval of the ozone vertical profiles (von Savigny et al, 2005b). This method will be further referenced to as the Stratozone algorithm.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the inversion algorithms applied to the ozone vertical profile retrieval from SCIAMACHY limb measurements

Rozanov

Eichmann²,

Savigny³

et al. 2007

Atmos. Chem. Phys.

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Abstract. This paper is devoted to an intercomparison of ozone vertical profiles retrieved from the measurements of scattered solar radiation performed by the SCIAMACHY instrument in the limb viewing geometry. Three different inversion algorithms including the prototype of the operational Level 1 to 2 processor to be operated by the European Space Agency are considered. Unlike usual validation studies, this comparison removes the uncertainties arising when comparing measurements made by different instruments probing slightly different air masses and focuses on the uncertainties specific to the modeling-retrieval problem only. The intercomparison was performed for 5 selected orbits of SCIAMACHY showing a good overall agreement of the results in the middle stratosphere, whereas considerable discrepancies were identified in the lower stratosphere and upper troposphere altitude region. Additionally, comparisons with ground-based lidar measurements are shown for selected profiles demonstrating an overall correctness of the retrievals.

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The Ozone Hole Breakup in September 2002 as Seen by SCIAMACHY on ENVISAT

Cited by 78 publications

References 48 publications

Detection and mapping of polar stratospheric clouds using limb scattering observations

Detection and mapping of polar stratospheric clouds using limb scattering observations

The effect of horizontal gradients and spatial measurement resolution on the retrieval of global vertical NO<sub>2</sub> distributions from SCIAMACHY measurements in limb only mode

Comparison of the inversion algorithms applied to the ozone vertical profile retrieval from SCIAMACHY limb measurements

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The Ozone Hole Breakup in September 2002 as Seen by SCIAMACHY on ENVISAT

Cited by 78 publications

References 48 publications

Detection and mapping of polar stratospheric clouds using limb scattering observations

Detection and mapping of polar stratospheric clouds using limb scattering observations

The effect of horizontal gradients and spatial measurement resolution on the retrieval of global vertical NO&lt;sub&gt;2&lt;/sub&gt; distributions from SCIAMACHY measurements in limb only mode

Comparison of the inversion algorithms applied to the ozone vertical profile retrieval from SCIAMACHY limb measurements

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The effect of horizontal gradients and spatial measurement resolution on the retrieval of global vertical NO<sub>2</sub> distributions from SCIAMACHY measurements in limb only mode