Round-robin evaluation of nadir ozone profile retrievals: methodology and application to MetOp-A GOME-2
A methodology for the round-robin evaluation and the geophysical validation of ozone profile data retrieved from nadir UV backscatter satellite measurements is detailed and discussed, consisting of data set content studies, information content studies, co-location studies, and comparisons with refer...
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doaj-4291b01b569d49fb97f0fd6df7a780e92020-11-24T21:05:57ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482015-05-01852093212010.5194/amt-8-2093-2015Round-robin evaluation of nadir ozone profile retrievals: methodology and application to MetOp-A GOME-2A. Keppens0J.-C. Lambert1J. Granville2G. Miles3R. Siddans4J. C. A. van Peet5R. J. van der A6D. Hubert7T. Verhoelst8A. Delcloo9S. Godin-Beekmann10R. Kivi11R. Stübi12C. Zehner13Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, BelgiumBelgian Institute for Space Aeronomy (BIRA-IASB), Brussels, BelgiumBelgian Institute for Space Aeronomy (BIRA-IASB), Brussels, BelgiumRutherford Appleton Laboratory (RAL), Chilton, Didcot, UKRutherford Appleton Laboratory (RAL), Chilton, Didcot, UKRoyal Netherlands Meteorological Institute (KNMI), De Bilt, the NetherlandsRoyal Netherlands Meteorological Institute (KNMI), De Bilt, the NetherlandsBelgian Institute for Space Aeronomy (BIRA-IASB), Brussels, BelgiumBelgian Institute for Space Aeronomy (BIRA-IASB), Brussels, BelgiumRoyal Meteorological Institute (KMI-IRM), Brussels, BelgiumLaboratoire Atmosphère, Milieux, Observations Spatiales (LATMOS), Université Pierre et Marie Curie, Université Versailles St-Quentin-en-Yvelines, Centre National de la Recherche Scientifique, Paris, FranceFinnish Meteorological Institute (FMI-ARC), Sodankylä, FinlandFederal Office of Meteorology and Climatology (MeteoSwiss), Payerne, SwitzerlandEuropean Space Agency (ESA/ESRIN), Frascati, ItalyA methodology for the round-robin evaluation and the geophysical validation of ozone profile data retrieved from nadir UV backscatter satellite measurements is detailed and discussed, consisting of data set content studies, information content studies, co-location studies, and comparisons with reference measurements. Within the European Space Agency's Climate Change Initiative on ozone (Ozone_cci project), the proposed round-robin procedure is applied to two nadir ozone profile data sets retrieved at the Royal Netherlands Meteorological Institute (KNMI) and the Rutherford Appleton Laboratory (RAL, United Kingdom), using their respective OPERA v1.26 and RAL v2.1 optimal estimation algorithms, from MetOp-A GOME-2 (i.e. the second generation Global Ozone Monitoring Experiment on the first Meteorological Operational Satellite) measurements taken in 2008. The ground-based comparisons use ozonesonde and lidar profiles as reference data, acquired by the Network for the Detection of Atmospheric Composition Change (NDACC), Southern Hemisphere Additional Ozonesonde programme (SHADOZ), and other stations of the World Meteorological Organisation's Global Atmosphere Watch (WMO GAW). This direct illustration highlights practical issues that inevitably emerge from discrepancies in e.g. profile representation and vertical smoothing, for which different recipes are investigated and discussed. Several approaches for information content quantification, vertical resolution estimation, and reference profile resampling are compared and applied as well. The paper concludes with compliance estimates of the two GOME-2 ozone profile data sets with user requirements from the Global Climate Observing System (GCOS) and from climate modellers.http://www.atmos-meas-tech.net/8/2093/2015/amt-8-2093-2015.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
A. Keppens J.-C. Lambert J. Granville G. Miles R. Siddans J. C. A. van Peet R. J. van der A D. Hubert T. Verhoelst A. Delcloo S. Godin-Beekmann R. Kivi R. Stübi C. Zehner |
spellingShingle |
A. Keppens J.-C. Lambert J. Granville G. Miles R. Siddans J. C. A. van Peet R. J. van der A D. Hubert T. Verhoelst A. Delcloo S. Godin-Beekmann R. Kivi R. Stübi C. Zehner Round-robin evaluation of nadir ozone profile retrievals: methodology and application to MetOp-A GOME-2 Atmospheric Measurement Techniques |
author_facet |
A. Keppens J.-C. Lambert J. Granville G. Miles R. Siddans J. C. A. van Peet R. J. van der A D. Hubert T. Verhoelst A. Delcloo S. Godin-Beekmann R. Kivi R. Stübi C. Zehner |
author_sort |
A. Keppens |
title |
Round-robin evaluation of nadir ozone profile retrievals: methodology and application to MetOp-A GOME-2 |
title_short |
Round-robin evaluation of nadir ozone profile retrievals: methodology and application to MetOp-A GOME-2 |
title_full |
Round-robin evaluation of nadir ozone profile retrievals: methodology and application to MetOp-A GOME-2 |
title_fullStr |
Round-robin evaluation of nadir ozone profile retrievals: methodology and application to MetOp-A GOME-2 |
title_full_unstemmed |
Round-robin evaluation of nadir ozone profile retrievals: methodology and application to MetOp-A GOME-2 |
title_sort |
round-robin evaluation of nadir ozone profile retrievals: methodology and application to metop-a gome-2 |
publisher |
Copernicus Publications |
series |
Atmospheric Measurement Techniques |
issn |
1867-1381 1867-8548 |
publishDate |
2015-05-01 |
description |
A methodology for the round-robin evaluation and the geophysical validation of
ozone profile data retrieved from nadir UV backscatter satellite
measurements is detailed and discussed, consisting of data set content
studies, information content studies, co-location studies, and comparisons
with reference measurements. Within the European Space Agency's Climate
Change Initiative on ozone (Ozone_cci project), the proposed
round-robin procedure is applied to two nadir ozone profile data sets
retrieved at the Royal Netherlands Meteorological Institute (KNMI) and the
Rutherford Appleton Laboratory (RAL, United Kingdom), using their respective
OPERA v1.26 and RAL v2.1 optimal estimation algorithms, from MetOp-A GOME-2
(i.e. the second generation Global Ozone Monitoring Experiment on the first
Meteorological Operational Satellite) measurements taken in 2008. The
ground-based comparisons use ozonesonde and lidar profiles as reference
data, acquired by the Network for the Detection of Atmospheric Composition
Change (NDACC), Southern Hemisphere Additional Ozonesonde programme
(SHADOZ), and other stations of the World Meteorological Organisation's
Global Atmosphere Watch (WMO GAW). This direct illustration highlights
practical issues that inevitably emerge from discrepancies in e.g. profile
representation and vertical smoothing, for which different recipes are
investigated and discussed. Several approaches for information content
quantification, vertical resolution estimation, and reference profile
resampling are compared and applied as well. The paper concludes with
compliance estimates of the two GOME-2 ozone profile data sets with user
requirements from the Global Climate Observing System (GCOS) and from
climate modellers. |
url |
http://www.atmos-meas-tech.net/8/2093/2015/amt-8-2093-2015.pdf |
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