Geophysical validation of SCIAMACHY Limb Ozone Profiles

Brinksma, E. J.; Bracher, Astrid; Lolkema, Dorien E.; Segers, Arjo; Boyd, I. S.; Bramstedt, K.; Claude, H.; Godin‐Beekmann, Sophie; Hansen, Georg; Kopp, G.; Leblanc, Thierry; McDermid, I. Stuart; Meijer, Yasjka; Nakane, Hideaki; Parrish, A.; Savigny, Christian von; Stebel, K.; Swart, D. P. J.; Taha, Ghassan; Piters, A. J. M.

doi:10.5194/acp-6-197-2006

Cited by 40 publications

(48 citation statements)

References 20 publications

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“…The maxima of the relative differences are seen at around 22 and 28 km. The oscillations are most probably caused by the fact that the radiance profiles, sampled by the SCIAMACHY instrument at different tangent heights, are not exactly aligned vertically (Brinksma et al, 2006). At these latitudes, the horizontal variations of the stratospheric ozone are usually stronger as compared to other latitudes, and thus the oscillations are more pronounced.…”

Section: Partial-column Comparisonsmentioning

confidence: 99%

Global validation of SCIAMACHY limb ozone data (versions 2.9 and 3.0, IUP Bremen) using ozonesonde measurements

Jia¹,

Rozanov²,

Ladstätter-Weißenmayer³

et al. 2015

Atmos. Meas. Tech.

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Abstract. In this paper, the latest SCIAMACHY limb ozone scientific vertical profiles, namely the current V2.9 and the upcoming V3.0, are extensively compared with ozonesonde data from the World Ozone and Ultraviolet Radiation Data Centre (WOUDC) database. The comparisons are made on a global scale from 2003 to 2011, involving 61 sonde stations. The retrieval processors used to generate V2.9 and V3.0 data sets are briefly introduced. The comparisons are discussed in terms of vertical profiles and stratospheric partial columns. Our results indicate that the V2.9 ozone profile data between 20 and 30 km are in good agreement with ground-based measurements, with less than 5 % relative differences in the latitude range of 90 • S-40 • N (with the exception of the tropical Pacific region, where an overestimation of more than 10 % is observed), which corresponds to less than 5 DU partial-column differences. In the tropics the differences are within 3 %. However, this data set shows a significant underestimation northwards of 40 • N (up to ∼ 15 %). The newly developed V3.0 data set reduces this bias to below 10 % while maintaining a good agreement southwards of 40 • N with slightly increased relative differences of up to 5 % in the tropics.

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Section: Partial-column Comparisonsmentioning

confidence: 99%

Global validation of SCIAMACHY limb ozone data (versions 2.9 and 3.0, IUP Bremen) using ozonesonde measurements

Jia¹,

Rozanov²,

Ladstätter-Weißenmayer³

et al. 2015

Atmos. Meas. Tech.

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“…It uses eight channels in the UV, visible and near-IR spectral range from 240 to 2380 nm, with a moderate resolution of 0.2-1.5 nm (Bovensmann et al, 1999). Number density profiles of several atmospheric species (such as O 3 , NO 2 , BrO, OClO), as well as polar stratospheric clouds and noctilucent clouds, are routinely retrieved from the limb measurements from the surface to ∼92 km with a vertical spacing of 3.3 km (e.g., Brinksma et al, 2006).…”

Section: Envisat/sciamachymentioning

confidence: 99%

Validation of ozone measurements from the Atmospheric Chemistry Experiment (ACE)

Dupuy¹,

Walker²,

Kar³

et al. 2009

Atmos. Chem. Phys.

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144

126

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Abstract. This paper presents extensive bias determination analyses of ozone observations from the Atmospheric Chemistry Experiment (ACE) satellite instruments: the ACE Fourier Transform Spectrometer (ACE-FTS) and the Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation (ACE-MAESTRO) instrument. Here we compare the latest ozone data products from ACE-FTS and ACE-MAESTRO with coincident observations from nearly 20 satellite-borne, airborne, balloonborne and ground-based instruments, by analysing volume mixing ratio profiles and partial column densities. The ACE-FTS version 2.2 Ozone Update product reports more ozone than most correlative measurements from the upper troposphere to the lower mesosphere. At altitude levels from 16 to 44 km, the average values of the mean relative differences are nearly all within +1 to +8%. At higher altitudes (45-60 km), the ACE-FTS ozone amounts are significantly larger than those of the comparison instruments, with mean relative differences of up to +40% (about +20% on average). For the ACE-MAESTRO version 1.2 ozone data product, mean relative differences are within ±10% (average values within ±6%) between 18 and 40 km for both the sunrise and sunset measurements. At higher altitudes (∼35-55 km), systematic biases of opposite sign are found between the ACE-MAESTRO sunrise and sunset observations. While ozone amounts derived from the ACE-MAESTRO sunrise occultation data are often smaller than the coincident observations (with mean relative differences down to −10%), the sunset occultation profiles for ACE-MAESTRO show results that are qualitatively similar to ACE-FTS, indicating a large positive bias (mean relative differences within +10 to +30%) in the 45-55 km altitude range. In contrast, there is no significant systematic difference in bias found for the ACE-FTS sunrise and sunset measurements.

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“…Routine measurements were obtained with the simpler system from 1986 to 1993. The OHP ozone data have been compared to various satellite measurements such as SAGE II, MLS-UARS, GOME, GOMOS, MIPAS, SCIAMACHY (Meijer et al, 2004Brinksma et al, 2006;Cortesi et al, 2007;Iapaolo et al, 2007;Jiang et al, 2007;Rozanov et al, 2007;van Gijsel et al, 2009). Open circles correspond to the bright and twilight illumination conditions while black dots correspond to dark conditions.…”

Section: Comparisons With the Ohp Lidarmentioning

confidence: 99%

Mid-latitude ozone monitoring with the GOMOS-ENVISAT experiment version 5: the noise issue

et al. 2010

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Abstract. The GOMOS ozone profiles have been analysed to evaluate the GOMOS ability to capture the long-term ozone evolution at mid-latitudes during the expected recovery phase of the ozone layer. Version 5 of the operational GOMOS ozone data has been compared with data from two of the longest ground-based instruments based on different techniques and already involved with many other previous space instrument validations. Comparisons between ground-based and GOMOS data confirm the occurrence of spurious retrievals mainly occurring since 2006. Using a selected set of data it is shown that some bad retrievals are induced by the increasing dark charge of the detectors combined with an inadequate method for its correction. This effect does not only induce a continuous bias, but is rather exhibiting a bimodal distribution including the correct profiles and the bad retrievals. For long-term analyses it is recommended filtering the data according to background light conditions and star temperature (spectrum shape). The new method of the dark charge estimate proposed to be implemented in the version 6 of the ESA algorithm seems to significantly reduce the occurrence of such effects and should allow to monitor stratospheric ozone using GOMOS data with greater confidence.

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Geophysical validation of SCIAMACHY Limb Ozone Profiles

Cited by 40 publications

References 20 publications

Global validation of SCIAMACHY limb ozone data (versions 2.9 and 3.0, IUP Bremen) using ozonesonde measurements

Global validation of SCIAMACHY limb ozone data (versions 2.9 and 3.0, IUP Bremen) using ozonesonde measurements

Validation of ozone measurements from the Atmospheric Chemistry Experiment (ACE)

Mid-latitude ozone monitoring with the GOMOS-ENVISAT experiment version 5: the noise issue

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