13 results on '"Coheur, P.F."'
Search Results
2. The GEISA spectroscopic database: Current and future archive for Earth and planetary atmosphere studies
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Jacquinet-Husson, N., Scott, N.A., Chédin, A., Crépeau, L., Armante, R., Capelle, V., Orphal, J., Coustenis, A., Boonne, C., Poulet-Crovisier, N., Barbe, A., Birk, M., Brown, L.R., Camy-Peyret, C., Claveau, C., Chance, K., Christidis, N., Clerbaux, C., Coheur, P.F., Dana, V., Daumont, L., De Backer-Barilly, M.R., Di Lonardo, G., Flaud, J.M., Goldman, A., Hamdouni, A., Hess, M., Hurley, M.D., Jacquemart, D., Kleiner, I., Köpke, P., Mandin, J.Y., Massie, S., Mikhailenko, S., Nemtchinov, V., Nikitin, A., Newnham, D., Perrin, A., Perevalov, V.I., Pinnock, S., Régalia-Jarlot, L., Rinsland, C.P., Rublev, A., Schreier, F., Schult, L., Smith, K.M., Tashkun, S.A., Teffo, J.L., Toth, R.A., Tyuterev, Vl.G., Vander Auwera, J., Varanasi, P., and Wagner, G.
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- 2008
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3. Detection of elevated tropospheric hydrogen peroxide (H 2O 2) mixing ratios in atmospheric chemistry experiment (ACE) subtropical infrared solar occultation spectra
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Rinsland, C.P., Coheur, P.F., Herbin, H., Clerbaux, C., Boone, C., Bernath, P., and Chiou, L.S.
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- 2007
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4. The 2003 edition of the GEISA/IASI spectroscopic database
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Jacquinet-Husson, N., Scott, N.A., Chédin, A., Garceran, K., Armante, R., Chursin, A.A., Barbe, A., Birk, M., Brown, L.R., Camy-Peyret, C., Claveau, C., Clerbaux, C., Coheur, P.F., Dana, V., Daumont, L., Debacker-Barilly, M.R., Flaud, J.M., Goldman, A., Hamdouni, A., Hess, M., Jacquemart, D., Köpke, P., Mandin, J.Y., Massie, S., Mikhailenko, S., Nemtchinov, V., Nikitin, A., Newnham, D., Perrin, A., Perevalov, V.I., Régalia-Jarlot, L., Rublev, A., Schreier, F., Schult, I., Smith, K.M., Tashkun, S.A., Teffo, J.L., Toth, R.A., Tyuterev, Vl.G., Vander Auwera, J., Varanasi, P., and Wagner, G.
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- 2005
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5. Resolution of the uncertainties in the radiative forcing of HFC-134a
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Forster, Piers M. de F., Burkholder, J.B., Clerbaux, C., Coheur, P.F., Dutta, M., Gohar, L.K., Hurley, M.D., Myhre, G., Portmann, R.W., Shine, K.P., Wallington, T.J., and Wuebbles, D.
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- 2005
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6. Benchmarking climate model top-of-atmosphere radiance in the 9.6 micron ozone band compared to TES and IASI observations
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Worden, H.M., Bowman, K.W., Kuai, L., Conley, A., Lamarque, J.F., Shindell, D., Faluvegi, G., Clerbaux, Cathy, Coheur, P.F., Doniki, S., Massie, S., Cardon, Catherine, Atmospheric Chemistry Observations and Modeling Laboratory (ACOML), National Center for Atmospheric Research [Boulder] (NCAR), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), NASA Goddard Institute for Space Studies (GISS), NASA Goddard Space Flight Center (GSFC), TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique, Université libre de Bruxelles (ULB), and International Ozone Commission
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[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] ,[PHYS.PHYS.PHYS-AO-PH] Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] - Abstract
International audience; The TOA (top of atmosphere) flux for the 9.6 micron ozone band is a fundamental quantity which is predicted by IPCC chemistry-climate models but has never been tested directly against satellite measurements. Errors in this quantity propagate to errors in sensitivity of TOA flux to the vertical distribution of ozone, or Instantaneous Radiative Kernel (IRK) and consequently affect the uncertainty in the estimate of ozone radiative forcing from pre-industrial to present day.We compute the ozone band flux and the IRK, from Aura-TES and MetOP-IASI spectral radiance mea- surements. The IRKs from TES and IASI explicitly account for more dominant radiative processes such as clouds and water vapor, due to the spectrally resolved absorption features, and allow attribution of changes in ozone RF to vertical changes in ozone and ozone precursor emissions. The continuation of the TES record of infrared ozone spectra with long-term IASI data will allow accurate predictions of future ozone forcing and an assessment of the feedback from changes in the hydrological cycle on ozone RF. Here we present initial comparisons of satellite observed TOA ozone band fluxes and IRKs with RRTMG (Rapid Radiative Transfer Model-GCM applications) in the NCAR CAM-chem chemistry/climate model and with the GISS radiative transfer model.
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- 2016
7. An evaluation of IASI-NH3 with ground-based Fourier transform infrared spectroscopy measurements
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Dammers, E., Palm, M., Van Damme, M., Vigouroux, C., Smale, D., Conway, S., Toon, G.C., Jones, N., Nussbaumer, E., Warneke, T., Petri, C., Clarisse, L., Clerbaux, C., Hermans, C., Lutsch, E., Strong, K., Hannigan, J.W., Nakajima, H., Morino, I., Herrera, B., Stremme, W., Grutter, M., Schaap, M., Kruit, R.J.W., Notholt, J., Coheur, P.F., Erisman, J.W., Earth and Climate, Faculty of Earth and Life Sciences [Amsterdam] (FALW), Vrije Universiteit Amsterdam [Amsterdam] (VU), Institut für Umweltphysik [Bremen] (IUP), Universität Bremen, Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique, Université libre de Bruxelles (ULB), Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), National Institute of Water and Atmospheric Research [Lauder] (NIWA), University of Toronto, Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Centre for Atmospheric Chemistry [Wollongong] (CAC), University of Wollongong [Australia], National Center for Atmospheric Research [Boulder] (NCAR), TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Department of Physics [Toronto], National Institute for Environmental Studies (NIES), Centro de Ciencias de la Atmosfera [Mexico], Universidad Nacional Autónoma de México (UNAM), TNO Climate, Air and Sustainability [Utrecht], The Netherlands Organisation for Applied Scientific Research (TNO), National Institute for Public Health and the Environment [Bilthoven] (RIVM), Louis Bolk Institute, and Universidad Nacional Autónoma de México = National Autonomous University of Mexico (UNAM)
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[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] ,Physico-chimie générale ,Urban Mobility & Environment ,Télédétection ,Urbanisation ,CAS - Climate, Air and Sustainability ,ELSS - Earth, Life and Social Sciences ,Environment ,Environment & Sustainability - Abstract
Global distributions of atmospheric ammonia (NH3) measured with satellite instruments such as the Infrared Atmospheric Sounding Interferometer (IASI) contain valuable information on NH3 concentrations and variability in regions not yet covered by ground-based instruments. Due to their large spatial coverage and (bi-)daily overpasses, the satellite observations have the potential to increase our knowledge of the distribution of NH3 emissions and associated seasonal cycles. However the observations remain poorly validated, with only a handful of available studies often using only surface measurements without any vertical information. In this study, we present the first validation of the IASI-NH3 product using ground-based Fourier transform infrared spectroscopy (FTIR) observations. Using a recently developed consistent retrieval strategy, NH3 concentration profiles have been retrieved using observations from nine Network for the Detection of Atmospheric Composition Change (NDACC) stations around the world between 2008 and 2015. We demonstrate the importance of strict spatio-temporal collocation criteria for the comparison. Large differences in the regression results are observed for changing intervals of spatial criteria, mostly due to terrain characteristics and the short lifetime of NH3 in the atmosphere. The seasonal variations of both datasets are consistent for most sites. Correlations are found to be high at sites in areas with considerable NH3 levels, whereas correlations are lower at sites with low atmospheric NH3 levels close to the detection limit of the IASI instrument. A combination of the observations from all sites (Nobs Combining double low line 547) give a mean relative difference of ĝ'32.4ĝ€±ĝ€(56.3)ĝ€%, a correlation r of 0.8 with a slope of 0.73. These results give an improved estimate of the IASI-NH3 product performance compared to the previous upper-bound estimates (-50 to +100%).
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- 2016
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8. Worldwide spatiotemporal atmospheric ammonia (NH3) columns variability revealed by satellite
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van Damme, M., Erisman, J.W., Clarisse, L., Dammers, E., Whitburn, S., Clerbaux, C., Dolman, A.J., Coheur, P.F., Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique, Université libre de Bruxelles (ULB), Faculty of Earth and Life Sciences [Amsterdam] (FALW), Vrije Universiteit Amsterdam [Amsterdam] (VU), Louis Bolk Institute (LBI), TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), F.R.S.-FNRS, the Belgian State Federal Office for Scientific, Technical and Cultural Affairs, European Commission, European Project: 282910,EC:FP7:ENV,FP7-ENV-2011,ECLAIRE(2011), European Project: 606719,EC:FP7:SPA,FP7-SPACE-2013-1,PANDA(2014), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Earth and Climate, and Amsterdam Global Change Institute
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[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] ,IASI satellite ,spatiotemporal variability ,seasonality ,NH3 source processes ,N cycle ,NH3 ,ammonia - Abstract
International audience; We exploit six years of measurements from the IASI/MetOp-A instrument to identify seasonal patterns and inter-annual variability of atmospheric NH3. This is achieved by analyzing the time evolution of the monthly-mean NH3 columns in 12 subcontinental areas around the world, simultaneously considering measurements from IASI morning and evening overpasses. For most regions, IASI has a sufficient sensitivity throughout the years to capture the seasonal patterns of NH3 columns, and we show that each region is characterized by a well-marked and distinctive cycle, with maxima mainly related to underlying emission processes. The largest column abundances and seasonal amplitudes throughout the years are found in Southwestern Asia,with maxima twice as large as what is observed in Southeastern China. The relation between emission sources and retrieved NH3 columns is emphasized at smaller regional scale by inferring a climatology of the month of maximum columns.
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- 2015
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9. Evaluating 4 years of atmospheric ammonia (NH3) over Europe using IASI satellite observations and LOTOS-EUROS model results
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Damme, M. van, Wichink Kruit, R.J., Schaap, M., Clarisse, L., Clerbaux, C., Coheur, P.F., Dammers, E., Dolman, A.J., Erisman, J.W., Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique, Université libre de Bruxelles (ULB), Faculty of Earth and Life Sciences [Amsterdam] (FALW), Vrije Universiteit Amsterdam [Amsterdam] (VU), TNO Climate, Air and Sustainability [Utrecht], The Netherlands Organisation for Applied Scientific Research (TNO), TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Louis Bolk Institute (LBI), Earth and Climate, and Amsterdam Global Change Institute
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regional modeling ,IASI ,satellite remote sensing ,Earth / Environmental ,Regional model ,Ground based measurement ,CAS - Climate, Air and Sustainability ,Remote sensing ,ammonia ,Satellite observations ,Urban Development ,Ammonia ,Quantitative comparison ,[SDE]Environmental Sciences ,Satellite measurements ,NH3 ,ELSS - Earth, Life and Social Sciences ,Industrial emissions ,Built Environment ,SDG 6 - Clean Water and Sanitation ,LOTOS-EUROS ,satellite/model comparison - Abstract
Monitoring ammonia (NH3) concentrations on a global to regional scale is a challenge. Due to the limited availability of reliable ground-based measurements, the determination of NH3 distributions generally relies on model calculations. Novel remotely sensed NH3burdens provide valuable insights to complement traditional assessments for clear-sky conditions. This paper presents a first quantitative comparison between Atmospheric Sounding Interferometer (IASI) satellite observations and LOTOS-EUROS model results over Europe and Western Russia. A methodology to account for the variable retrieval sensitivity of the measurements is described. Four years of data (2008-2011) highlight three main agricultural hot spot areas in Europe: the Po Valley, the continental part of Northwestern Europe, and the Ebro Valley. The spatial comparison reveals a good overall agreement of the NH3 distributions not only in these source regions but also over remote areas and over sea when transport is observed. On average, the measured columns exceed the modeled ones, except for a few cases. Large discrepancies over several industrial areas in Eastern Europe and Russia point to underestimated emissions in the underlying inventories. The temporal analysis over the three hot spot areas reveals that the seasonality is well captured by the model when the lower sensitivity of the satellite measurements in the colder months is taken into account. Comparison of the daily time series indicates possible misrepresentations of the timing and magnitude of the emissions. Finally, specific attention to biomass burning events shows that modeled plumes are less spread out than the observed ones. This is confirmed for the 2010 Russian fires with a comparison using in situ observations. ©2014. American Geophysical Union. All Rights Reserved.
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- 2014
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10. Monitoring of atmospheric composition using the thermal infrared IASI/METOP sounder
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Clerbaux, Cathy, Coheur, P.F., Turquety, Solène, Hadji-Lazaro, Juliette, Hurtmans, D., George, Maya, Boynard, Anne, Pommier, Matthieu, Razavi, A., Wespes, C., TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique, Université libre de Bruxelles (ULB), Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École polytechnique (X)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Cardon, Catherine, Service d'aéronomie (SA), and Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
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[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] ,[PHYS.PHYS.PHYS-AO-PH] Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] - Abstract
(Conférence invitée); International audience
- Published
- 2009
11. Detection of elevated tropospheric hydrogen peroxide (H2O2) mixing ratios in atmospheric chemistry experiment (ACE) subtropical infrared solar occultation spectra
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Rinsland, C.P., Coheur, P.F., Herbin, H., Clerbaux, C., Boone, C., Bernath, P., and Chiou, L.S.
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TROPOSPHERIC circulation , *HYDROGEN peroxide , *ATMOSPHERIC chemistry , *OCCULTATIONS (Astronomy) - Abstract
Abstract: We report measurements of hydrogen peroxide (H2O2) profiles from infrared solar occultation spectra recorded at 0.02cm−1 resolution by the atmospheric chemistry experiment (ACE) during 2004 and 2005. Mixing ratios as high as 1.7ppbv (1ppbv=1×10−9 per unit volume) were measured in the subtropical troposphere. Back trajectories, fire count statistics, and simultaneous measurements of other species from the same occultation provide evidence that the elevated H2O2 mixing ratios originated from a young biomass-burning plume. The ACE time series show only a few cases with elevated H2O2 mixing ratios likely because of the short lifetime of H2O2 and the limited sampling during biomass-burning time periods. [Copyright &y& Elsevier]
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- 2007
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12. Validation of the MetOp-A total ozone data from GOME-2 and IASI using reference ground-based measurements at the Iberian Peninsula
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Antón, M., Loyola, D., Clerbaux, C., López, M., Vilaplana, J.M., Bañón, M., Hadji-Lazaro, J., Valks, P., Hao, N., Zimmer, W., Coheur, P.F., Hurtmans, D., and Alados-Arboledas, L.
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SATELLITE meteorology , *OZONE layer , *SOLAR Ultraviolet Network , *INTERFEROMETERS , *SPECTROPHOTOMETERS , *ZENITH distance , *INFRARED spectroscopy - Abstract
Abstract: One of the most important atmospheric composition products derived from the first EUMETSAT Meteorological Operational satellite (MetOp-A) is the total ozone column (TOC). For this purpose, MetOp-A has two instruments on board: the Global Ozone Monitoring Experiment 2 (GOME-2) that retrieves the TOC data from the backscattered solar ultraviolet–visible (UV–Vis) radiance, and the Infrared Atmospheric Sounding Interferometer (IASI) that uses the thermal infrared radiance to derive TOC data. This paper focuses on the simultaneous validation of the TOC data provided by these two MetOp-A instruments using the measurements recorded by five well-calibrated Brewer UV spectrophotometers located at the Iberian Peninsula during the complete 2009. The results show an excellent correlation between the ground-based data and the GOME-2 and IASI satellite observations (R2 higher than 0.91). Differences between the ground-based and satellite TOC data show that the IASI instrument significantly overestimates the Brewer measurements (about 4.4% when all five ground-based stations are jointly used). In contrast, the GOME-2 instrument shows a slight underestimation (~1.6%). In addition, the absolute relative differences between the Brewer and GOME-2 data are quite smaller (about a factor higher than 2) than the Brewer–IASI absolute differences. The satellite viewing geometry (solar zenith angle and the view zenith angle) has no significant influence on the Brewer–satellite relative differences. Moreover, the analysis of these relative differences with respect to the ground-based TOC data indicates that GOME-2 instrument presents a slight underestimation for high TOC values. Finally, the IASI–GOME-2 correlation is high (R2 ~0.92), but with a mean relative difference of about ±6% which could be associated with the bias between UV–Vis and infrared spectroscopy used in the retrieval processes. [Copyright &y& Elsevier]
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- 2011
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13. Measuring atmospheric Ammonia with Remote Sensing: Validation of satellite observations with ground-based measurements
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Dammers, E., Erisman, Jan Willem, Coheur, P.F., Schaap, M., Faculty of Sciences, and Earth and Climate
- Published
- 2017
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