Xavier Ceamanos

Research scientist in aerosol and surface remote sensing at CNRM/Météo-France

Hello!

My name is Xavier Ceamanos and I have been a research scientist at CNRM (Météo-France/CNRS) since 2017. My research focuses on the study of atmospheric aerosols and land surfaces based on shortwave satellite remote sensing. To do so, I develop radiative transfer-based retrieval algorithms enabling the estimation of physical and radiative properties (e.g. aerosol optical depth, surface reflectance) from geostationary Earth orbit (GEO) and low Earth orbit (LEO) satellites. Today, I am involved in several programs funded by space agencies and other research initiatives such as AERUS-GEO , iAERUS-GEO, and LSA-SAF. In this context, I collaborate with several French and international centers such as ICARE/AERIS, LOA, LAERO, IPMA, LATMOS, NASA GSFC/JPL, EUMETSAT, McGill University, ECMWF, JAXA, and JMA.

One of the main topics of my research is the estimation of aerosol properties from GEO satellites. This is achieved using retrieval algorithms developed at CNRM in collaboration with the ICARE data and services center. Figure a shows the transport of Saharan mineral dust towards the Mediterranean basin in July 2016 thanks to the data provided by the iAERUS-GEO algorithm applied to the EUMETSAT's Meteosat Second Generation (MSG) satellite. The high temporal resolution of GEO missions (i.e. 15 minutes for MSG) enables us to study the diurnal variation in aerosol properties, which is currently poorly understood. Current work is focused on the evolution of retrieval algorithms for the new Meteosat Third Generation-Imager mission, which will provide advanced characterization of aerosols and land surfaces.

Satellite aerosol observations are extremely useful for addressing a number of scientific subjects. This is the case for monitoring the transport of wildfire smoke, which is also a subject of my research. Figure b shows the massive smoke plumes emitted by US wildfires in 2020, thanks to global maps of daily AOD obtained from a constellation of five GEO satellites regularly spaced around the Earth (GOES-16/17, Meteosat-8/11, and Himawari-8). These data, combined with other satellite and ground-based measurements, make possible to study the emission, transport, and evolution of aerosols resulting from biomass burning aerosols*.

*New paper published on Scientific Reports: https://www.nature.com/articles/s41598-023-39312-1

Figure a: Instantaneous aerosol optical depth retrieved by iAERUS-GEO from MSG every 15 minutes on four consecutive dates in July 2016. The Mediterranean Basin is zoomed in to show the arrival of mineral dust from North Africa.

Figure b: Illustration of the smoke plume observed on 17 September 2020. The total AOD retrieved from GEO-ring is depicted in shades of yellow (low AOD) to red (high AOD). The VIIRS true color image in the background enables to see the large-scale atmospheric circulation in which the plume is being transported. Two vertical curtains illustrate the CALIOP total attenuated backscatter observations used to determine aerosol plume altitude.

Mini resume

In 2008, I obtained a joint degree in electrical engineering from UPC/ETSETB in Spain and Grenoble INP/PhElma in France. To validate my degree, I did my master's intership at the Faculty of Electrical and Computer Engineering at the University of Iceland. I then enrolled in a PhD program in planetary remote sensing at the IPAG laboratory. After obtaining my PhD in 2011, I worked as a post-doc at CNRM until 2014. Before joining the staff of Météo-France in 2017, I spent three years at the French Aerospace Lab ONERA working on airborne hyperspectral remote sensing.

Others

I serve as reviewer for several journals including AGU JGR-Atmospheres, Elsevier Remote Sensing of Environment, EGU Atmospheric Measurement Techniques and MDPI Remote Sensing
Since 2017 I teach in the Master in Computer Science for Aerospace at Paul Sabatier University (Toulouse III)
In 2014 I was co-lead of the surface radiation area of the CEOS/WGCV Land Product Validation subgroup.
I was visiting scientist at NASA GFSC in June 2011.

Contact details

e-mail: xavier*dot*ceamanos*at*meteo*dot*fr
phone: (+33) (0)5 61 07 96 43
surface address: CNRM, 42 av. Gaspard Coriolis, 31057, Toulouse Cedex 1, France

PhD students:

Gloria Klein, Atmospheric correction of shortwave observations from the Flexible Combined Imager on Meteosat Third Generation-Imager satellite for land surface retrieval, funded by LSA-SAF & CNRM, co-advisor: Jérôme Vidot, 2023-2026
Adèle Georgeot, Télédétection des propriétés des aérosols atmosphériques avec le futur satellite géostationnaire Meteosat Troisième Générateur Imageur (MTG-I), funded by Région Occitanie & Météo-France, co-advisor: Jean-Luc Attié, 2021-2024

MSc thesis students:

Adèle Georgeot, Utilisation de méthodes d’estimation optimale pour la caractérisation des aérosols atmosphériques par télédétection spatiale avec les satellites géostationnaires Meteosat, co-advisor: Jean-Luc Attié, 2021
Valentin Vigerie, Analyse climatologique et tendances d’évolution des aérosols urbains sur la région parisienne par mesures satellitaires, co-advisors: Aude Lemonsu et Marine Claeys, 2021
Julien Sablon, Impact des aérosols sur l'énergie photovoltaïque, co-advisor: Quentin Libois, 2020
Abderrahmane Aiche, Apport de la prise en compte de la spéciation des aérosols atmosphériques pour leur étude avec le satellite géostationnaire Météosat Seconde Génération, co-advisor: Jean-Luc Attié, 2020
Oumaima Atif, Synergie entre capteurs spatiaux passifs et actifs au sein d'un système d'assimilation pour la caractérisation des aérosols à l'échelle régionale, co-advisor: Laaziz El Amraoui, 2019
Etienne Fellman, Valeur ajoutée des résolutions spatiale et temporelle des simulations climatiques régionales et des produits satellitaires pour l’étude des aérosols en région méditerranéenne, co-advisor: Pierre Nabat, 2019
Hugo Gilardy, Improving the atmospheric correction of hyperspectral airborne remote sensing images of urban areas, 2016

Publications:

(check out my Google Scholar profile for more details)

Journal papers

Delmotte, A., Juncu, D., Ceamanos, X., Trigo, I.F., Gomes, S., Upgrade and extension of LSA-SAF land surface albedo archive from EPS Metop/AVHRR: description and quality assessment, European Journal of Remote Sensing, https://doi.org/10.1080/22797254.2023.2300043, 2024.
Boulisset, V.; Attié, J.-L.; Tournier, R.; Ceamanos, X.; Andrey, J.; Pequignot, E.; Lauret, N.; Gastellu-Etchegorry, J.-P., Aerosol Optical Depth Measurements from a Simulated Low-Cost Multi-Wavelength Ground-Based Camera: A Clear Case over a Peri-Urban Area, Remote Sens., 16, 140, https://doi.org/10.3390/rs16010140, 2024.
Georgeot, A., Ceamanos, X., & Attié, J.-L., Quantitative assessment of the potential of optimal estimation for aerosol retrieval from geostationary weather satellites in the frame of the iAERUS-GEO algorithm. Atmospheric Science Letters, 25(3), e1199. https://doi.org/10.1002/asl.1199, 2024
Ceamanos, X., Coopman, Q., George, M., Riedi, J., Parrington, M., and Clerbaux, C. Remote sensing and model analysis of biomass burning smoke transported across the Atlantic during the 2020 Western US wildfire season. Sci Rep 13, 16014, https://doi.org/10.1038/s41598-023-39312-1, 2023.
Ceamanos, X., Six, B., Moparthy, S., Carrer, D., Georgeot, A., Gasteiger, J., Riedi, J., Attié, J.-L., Lyapustin, A., and Katsev, I.: Instantaneous aerosol and surface retrieval using satellites in geostationary orbit (iAERUS-GEO) – estimation of 15 min aerosol optical depth from MSG/SEVIRI and evaluation with reference data, Atmos. Meas. Tech., 16, 2575–2599, https://doi.org/10.5194/amt-16-2575-2023, 2023.
Juncu, D., Ceamanos, X., Trigo, I. F., Gomes, S., and Freitas, S. C.: Upgrade of LSA-SAF Meteosat Second Generation daily surface albedo (MDAL) retrieval algorithm incorporating aerosol correction and other improvements, Geosci. Instrum. Method. Data Syst., 11, 389–412, https://doi.org/10.5194/gi-11-389-2022, 2022.
Ceamanos, X.; Six, B.; Riedi, J. Quasi-global Maps of Daily Aerosol Optical Depth from a Ring of Five Geostationary Meteorological Satellites using AERUS-GEO, Journal of Geophysical Research: Atmospheres, 126, e2021JD034906, 2021 (link)
Carrer, D.; Pinault, F.; Lellouch, G.; Trigo, I.F.; Benhadj, I.; Camacho, F.; Ceamanos, X.; Moparthy, S.; Munoz-Sabater, J.; Schüller, L.; Sánchez-Zapero, J. Surface Albedo Retrieval from 40-Years of Earth Observations through the EUMETSAT/LSA SAF and EU/C3S Programmes: The Versatile Algorithm of PYALUS. Remote Sens. 2021, 13, 372 (PDF)
Ceamanos, X.; Moparthy, S.; Carrer, D.; Seidel, F.C. Assessing the Potential of Geostationary Satellites for Aerosol Remote Sensing Based on Critical Surface Albedo. Remote Sens. 2019, 11, 2958 (PDF) -> cover story of Remote Sensing, Vol 11, Issue 24 (link)
Carrer, D.; Moparthy, S.; Vincent, C.; Ceamanos, X.; C. Freitas, S.; Trigo, I.F. Satellite Retrieval of Downwelling Shortwave Surface Flux and Diffuse Fraction under All Sky Conditions in the Framework of the LSA SAF Program (Part 2: Evaluation). Remote Sens. 2019, 11, 2630 (PDF)
Carrer, D.; Ceamanos, X.; Moparthy, S.; Vincent, C.; C. Freitas, S.; Trigo, I.F. Satellite Retrieval of Downwelling Shortwave Surface Flux and Diffuse Fraction under All Sky Conditions in the Framework of the LSA SAF Program (Part 1: Methodology). Remote Sens. 2019, 11, 2532 (PDF)
Moparthy, S.; Carrer, D.; Ceamanos, X. Can We Detect the Brownness or Greenness of the Congo Rainforest Using Satellite-Derived Surface Albedo? A Study on the Role of Aerosol Uncertainties. Sustainability 2019, 11, 1410 (PDF)
Carrer, D.; Moparthy, S.; Lellouch, G.; Ceamanos, X.; Pinault, F.; Freitas, S.C.; Trigo, I.F. Land Surface Albedo Derived on a Ten Daily Basis from Meteosat Second Generation Observations: The NRT and Climate Data Record Collections from the EUMETSAT LSA SAF. Remote Sens. 2018, 10, 1262 (PDF)
K.R.M. Adeline, X. Briottet, X. Ceamanos, T. Dartigalongue, J.-P. Gastellu-Etchegorry, ICARE-VEG: A 3D physics-based atmospheric correction method for tree shadows in urban areas, ISPRS Journal of Photogrammetry and Remote Sensing, Volume 142, 2018, Pages 311-327
D. Carrer, G. Pique, M. Ferlicoq, X. Ceamanos and E. Ceschia, What is the potential of cropland albedo management in the fight against global warming? A case study based on the use of cover crops, Environmental Research Letters, 2018a, Vol. 13 044030
G. Roussel, C. Weber, X. Briottet, X. Ceamanos, Comparison of two atmospheric correction methods for the classification of spaceborne urban hyperspectral data depending on the spatial resolution, International Journal of Remote Sensing, Vol 39, Issue 5, pp 1593-1614, 2018
S. Angelliaume, X. Ceamanos, F. Viallefont-Robinet, R. Baqué, P. Déliot, V. Miegebielle, Hyperspectral and Radar Airborne Imagery over Controlled Release of Oil at Sea. Sensors 2017, 17, 1772 (PDF).
H. Xu, J. Guo, X. Ceamanos, J.-L. Roujean, M. Min, and D. Carrer, On the influence of the diurnal variations of aerosol content to estimate direct aerosol radiative forcing using MODIS data, Atmospheric Environment, Vol. 141, pp. 186-196, Sep. 2016 (PDF).
M.S. Dramé, X. Ceamanos, J.-L. Roujean, A. Boone, J.-P. Lafore, D. Carrer, and O. Geoffroy, On the importance of aerosol composition for estimating incoming solar radiation: focus on the Western African stations of Dakar and Niamey during the dry season. Atmosphere 2015, 6, 1608-1632 (PDF)
J. Fernando, F. Schmidt, C. Pilorget, P. Pinet, X. Ceamanos, S. Douté, Y. Daydou, and F. Costard, Characterization and mapping of surface physical properties of Mars from CRISM multi-angular data: application to Gusev Crater and Meridiani Planum. Icarus, Vol. 253, Jun. 2015, pp. 271-295 (PDF)
D. Carrer, X. Ceamanos, B. Six, and J.-L. Roujean, AERUS-GEO: a newly available satellite-derived aerosol optical depth product over Europe and Africa, Geophysical Research Letters, 41, pp. 7731-7738, 2014 (PDF)
X. Ceamanos, D. Carrer, and J.-L. Roujean, Improved retrieval of direct and diffuse downwelling surface shortwave flux in cloudless atmosphere using dynamic estimates of aerosol content and type: application to the LSA-SAF project, Atmospheric Chemistry and Physics, 14, 8209-8232, doi:10.5194/acp-14-8209-2014, 2014 (PDF)
H. Xu, X. Ceamanos, J.-L. Roujean, D. Carrer, and Y. Xue, Can satellite-derived aerosol optical depth quantify the surface aerosol radiative forcing? Atmospheric Research, Vol. 150, Dec. 2014, pp. 151-167 (PDF)
S. Liu, J.-L. Roujean, A. T. Kaptué-Tchuenté, X. Ceamanos, J.-C. Calvet, A parameterization of SEVIRI and MODIS daily surface albedo with soil moisture: Calibration and validation over southwestern France. Remote Sensing of Environment, Vol. 144, Mar. 2014, pp. 137-151 (PDF)
X. Ceamanos, D. Carrer, and J.-L. Roujean, An efficient approach to estimate the transmittance and reflectance of a mixture of aerosol components, Atmospheric Research, Vol. 137, Feb. 2014, pp. 125-135 (PDF)
D. Carrer, C. Meurey, X. Ceamanos, J.-L. Roujean, J.-C. Calvet, and S. Liu, Dynamic mapping of snow-free vegetation and bare soil albedos at global 1km scale from 10-year analysis of MODIS satellite products, Remote Sensing of Environment, Vol. 140, Jan. 2014, pp. 420-432 (PDF)
S. Douté, X. Ceamanos, and T. Appéré, Retrieving atmospheric dust opacity on Mars by imaging spectroscopy at large angles, Planetary and Space Science, Vol. 85, Sep. 2013, pp. 38-52 (PDF)
X. Ceamanos, S. Douté, J. Fernando, F. Schmidt, P. Pinet, and A. Lyapustin. Surface reflectance of Mars observed by CRISM/MRO: 1. Multi-angle Approach for Retrieval of Surface Reflectance from CRISM Observations (MARS-ReCO). Journal of Geophysical Research, Vol. 118, Dec. 2013, Issue 3, pp. 514-533 (PDF)
J. Fernando, F. Schmidt, X. Ceamanos, P. Pinet, S. Douté, and Y. Daydou. Surface reflectance of Mars observed by CRISM/MRO: 2. Estimation of surface photometric curves in Gusev Crater and Meridiani Planum, Journal of Geophysical Research, Vol. 118, Dec. 2013, Issue 3, pp. 534-559 (PDF)
X. Ceamanos, S. Douté, B. Luo, F. Schmidt, G. Jouannic, and J. Chanussot. Intercomparison and Validation of Techniques for Spectral Unmixing of Hyperspectral Images: a Planetary Case Study. IEEE Transactions on Geoscience and Remote Sensing (IEEE TGRS), Vol. 49, No. 11, pp. 4341-4358, Nov. 2011 (PDF)
X. Ceamanos and S. Douté. Spectral smile correction of CRISM/MRO Hyperspectral images. IEEE TGRS, Vol. 48, No. 11, pp. 3951-3959, Nov. 2010 (PDF)
X. Ceamanos, B. Waske, J.A. Benediktsson, J. Chanussot, M. Fauvel, and J.R. Sveinsson. A Classifier Ensemble Based on Fusion of Support Vector Machines for Classifying Hyperspectral Data. International Journal of Image and Data Fusion, Vol.1, Issue 4, Dec. 2010, pp 293-307 (PDF)

Book chapters

X. Ceamanos and S. Valero, Processing Hyperspectral Images in Optical Remote Sensing of Land Surfaces - Techniques and Methods, N. Baghdadi and M. Zribi (Editors), Elsevier, pp 163–200, Oct. 2016.
- Version française : X. Ceamanos, S. Valero, Traitement d’images hyperspectrales dans Observation des surfaces continentales par télédétection optique - Techniques et méthodes, N. Baghdadi and M. Zribi (Editeurs), ISTE editions, 2016

International conferences (1st author only)

X. Ceamanos, A. Georgeot, D. Juncu, J. Gasteiger, M. Patou, J. Riedi, M. Compiègne, J.-L. Attié, I. Katsev, A. Lyapustin and R. Hogan, Aerosol Observations from Present and Future Meteosat Geostationary Satellites with iAERUS-GEO, AGU Fall Meeting, Dec. 2023, San Francisco, poster
X. Ceamanos, B. Six, D. Carrer, S. Moparthy, A. Georgeot, J. Gasteiger, J.-L. Attié, J. Riedi, i-AERUS-GEO: a new algorithm to retrieve diurnal variation of aerosol optical depth from Meteosat Second Generation, EUMETSAT conference, Sep. 2022, oral
X. Ceamanos, B. Six, D. Carrer, A. Georgeot, J. Riedi, S. Moparthy, J. Gasteiger, J.-L. Attié, Advances on aerosol retrieval from geostationary weather satellites using AERUS-GEO, International Radiation Symposium, Jul. 2022, oral
X. Ceamanos, D. Carrer, B. Six, S. Moparthy, J. Riedi, J. Gasteiger, J.-L. Attié, A. Aiche, Aerosol remote sensing from Meteosat Second Generation and other geostationary meteorological satellites using the AERUS-GEO suite: Status and plans, AGU Fall Meeting, Dec. 2021, oral
X. Ceamanos, D. Carrer, B. Six, S. Moparthy, J. Riedi, J. Gasteiger, A. Aiche, J.-L. Attié, Aerosol remote sensing from Meteosat Second Generation and other geostationary meteorological satellites using AERUS-GEO: Status and plans, EUMETSAT conference, Sep. 2021, oral
X. Ceamanos, S. Moparthy, D. Carrer, B. Six, Retrieving the diurnal cycle of aerosol optical depth from current and future Meteosat geostationary satellites, AGU Fall Meeting, Dec. 2019, oral
X. Ceamanos, D. Carrer, S. Moparthy, B. Six, Recent advances on aerosol retrieval from SEVIRI/MSG geostationary satellite observations using AERUS-GEO, AGU Fall Meeting, Dec. 2018, oral
X. Ceamanos, D. Carrer, S. Moparthy, Recent advances in the retrieval of solar surface irradiance from EUMETSAT satellite data in the LSA-SAF project, EGU General Assembly, Apr. 2018, Vienna, poster
X. Ceamanos, X. Briottet, G. Roussel, H. Gilardy and E. Koeniguer, Using 3D information for atmospheric correction of airborne hyperspectral urban images of urban areas. Joint Urban Remote Sensing Event, Mar. 2017, Dubai, oral (slides).
X. Ceamanos, X. Briottet, G. Roussel and H. Gilardy, ICARE-HS: atmospheric correction of airborne hyperspectral urban images using 3D information. SPIE Remote Sensing, Sep. 2016, Edinburgh, oral (slides).
X. Ceamanos, J.-L. Roujean, D. Carrer, B. Geiger, L. Franchisteguy, O. Hautecoeur and C. Meurey, Land surface albedo and downwelling shortwave surface flux from MSG/SEVIRI in the EUMETSAT LSA-SAF project. ESA Land Product Validation and Evolution, Jan. 2014, Frascati, oral (slides).
X. Ceamanos, D. Carrer, J.-L. Roujean, and C. Meurey, Downwelling shortwave surface flux from MSG geostationary satellite: impact assessment on land surface models and improvements on consideration of aerosol effects. IEEE IGARSS, Jul. 2013, Melbourne, oral (video link).
X. Ceamanos, D. Carrer, J.-L. Roujean, Downwelling shortwave surface flux from MSG satellite: current LSA-SAF product and improvements under clear sky conditions based on aerosol modeling, LSA-SAF Workshop, Jun. 2013, Karlsruhe, poster
X. Ceamanos, J.-L. Roujean, D. Carrer, O. Hautecoeur, J. Cedilnik, B. Geiger, and J.-F. Mahfouf, Land surface albedo and downwelling shortwave radiation from MSG geostationary satellite: method for retrieval, validation, and impact assessment in NWP and LSM models. 4th International Meeting on Meteorology and Climatology of the Mediterranean, Feb. 2013, Banyuls-sur-mer, oral (slides)
X. Ceamanos, S. Douté, J. Fernando, P. Pinet, Y. Daydou, and F. Schmidt. Retrieval and validation of photometric properties of Mars surface from multi-angle CRISM/MRO imagery. EPSC-DPS Joint Meeting, Oct. 2011, Nantes, oral. (PDF, slides)
X. Ceamanos, S. Douté, and A. Lyapustin. Atmospheric correction of multi-angle CRISM/MRO hyperspectral data: retrieval of aerosol optical thickness and surface reflectance. IEEE IGARSS, Jul. 2011, Vancouver, oral. (PDF, slides)
X. Ceamanos, S. Douté, B. Luo, F. Schmidt, G. Jouannic, J. Chanussot, Blind source separation of hyperspectral data in planetary remote sensing: endmember extraction and validation, IEEE IGARSS, Jul. 2011, Vancouver, oral
X. Ceamanos and S. Douté. Calibration of CRISM/MRO apparent wavelengths using synthetic data. IEEE Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS), Jun. 2010, Reykjavik, poster. (abstract, poster)
X. Ceamanos, S. Douté, Spectral smile correction in CRISM hyperspectral images, American Geophysical Union Fall Meeting, Dec. 2009, San Francisco, poster
X. Ceamanos and S. Douté. Spectral smile correction in CRISM hyperspectral images. IEEE WHISPERS, Aug. 2009, Grenoble, oral. (abstract)
X. Ceamanos, B. Waske, J.A. Benediktsson, J. Chanussot, and J.R. Sveinsson. Ensemble strategies for classifying hyperspectral remote sensing data. 8th International Workshop on Multiple Classifier Systems Jun. 2009, Reykjavik, oral. (abstract)

National conferences (1st author only)

X. Ceamanos, Q. Coopman, M. George, J. Riedi, M. Parrington, C. Clerbaux, Analyse par télédétection et modélisation des fumées des feux de forêt dans l'ouest des États-Unis en été 2020 et de leur transport à travers l’Atlantique, Ateliers de Modélisation de l’Atmosphère, May 2023, Toulouse, oral
X. Ceamanos, D. Carrer, S. Moparthy, Six, B., Péré, S., Observation des aérosols à partir de la plateforme géostationnaire « Meteosat Second Generation » - Restitution de l’AOD au pas de temps journalier et instantané, Atelier sur l’utilisation des produits aérosols inversés par satellites et issus des exercices de modélisation pour l’étude du climat régional/global, Toulouse, May 2019, oral
X. Ceamanos, G. Roussel, C. Weber, X. Briottet, A sun/shadow approach for the classification of hyperspectral data, Onera-DLR Aerospace Symposium, Jun. 2016, Oberpfaffenhofen, oral
X. Ceamanos, D. Carrer, J.-L. Roujean, Impact de la présence d'aérosols sur l'estimation du rayonnement solaire atteignant la surface sous conditions de ciel clair, Ateliers de Modélisation de l’Atmosphère, Jan. 2014, Toulouse, oral
X. Ceamanos, Shortwave radiation products from METEOSAT geostationary satellite: retrieval, validation, and application to numerical weather prediction and land surface models, Ateliers de Modélisation de l’Atmosphère, Jan. 2013, Toulouse, oral
X. Ceamanos, S. Douté, B. Luo, F. Schmidt, G. Jouannic & J. Chanussot. Étude de la surface de la planète Mars par des techniques de séparation de source appliquées sur des images hyperspectrales de télédétection. Colloque d’inauguration de la Société Française de Télédétection Hyperspectrale, Apr. 2011, Paris, oral

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