Dr George Petropoulos

Dr George Petropoulos

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George P. Petropoulos completed his graduate studies (MSc, PhD) at the University of London in 2008, specialising in Earth Observation (EO) Modelling, focusing specifically in the retrievals of energy fluxes (latent & sensible heat fluxes) & soil moisture from the synergy of optical (VNIR & TIR) EO data with simulation process models. A variant of the methodology he investigated during his PhD has been proposed for deriving operational estimates of soil moisture by NPOESS/NASA Space Agencies in downscaling the European Space Agency's (ESA's) operationally distributed soil moisture product provided today by their SMOS satellite.

After completing his PhD, George worked for 1.5 years as a postdoctoral fellow at Bristol University (UK), focusing principally on the exploitation of EO data in post-fire hazard assessment. Since then, & until the end of 2011, he worked in Greece as a research fellow supporting research & teaching activities in a variety of institutions & R&D projects, in some of which he was the coordinator (PI) himself. His last position prior to joining the DGES was a Postdoctoral Research Fellow of the European Space Agency (ESA) based in Greece. At present, as a Senior Lecturer in DGES he also holds a Marie Curie Fellowship from the European Commission (2013-2017).

Additional Information

Dr. Petropoulos serves as a Council member of the Remote Sensing & Photogrammetric Society (RSPSoC), Editorial Board Member on several international peer-reviewed scientific journals in EO & environmental modelling & as a reviewer for various funding bodies (including the European Commission). He is also responsible for the global distribution & maintenance of the SimSphere l& biosphere model from DGES & also for the in-situ soil moisture monitoring network "Wales Soil Moisture Network (WSMN)". He has also convened the organisation of several scientific sessions at international conferences (+10 so far) & of special issues (+3 so far) to scientific journals. He is Editor/Co-editor of 2 books so far (for Taylor & Francis & Elsevier), author/co-author +50 peer-reviewed journal articles (a total sum of >140 impact factor points), +90 international conferences. He has developed fruitful collaborations with key scientists in his area of specialisation globally, & his work so far has received international recognition via several significant awards he has obtained.

Teaching

Research

Research Interests

Exploit Earth Observation (EO) technology alone or synergistically with l& surface process (mainly SVAT) models in deriving key state variables of Earth's energy balance & water budget to better underst& Earth's l& surface interactions & feedback processes.

Quantify l& use/cover & of its changes (including estuarine ecosystems) occurred from anthropogenic activities exploiting for this purpose technologically advanced EO technology & synergistic multi-sensor modelling techniques.

Utilise EO technology & GIS geospatial analysis techniques in geohazards from prediction, to mapping damage & the recovery dynamics of the hazard-affected areas, with most emphasis on his research so far in floods, wildfires & frost.

Contribute to the development of open source software tools in EO modelling & develop & implement all-inclusive benchmarking approaches to either EO operational algorithms/products or surface process models, including advanced sensitivity analysis.

Grants & Funding (representative grants with a PI role)

2013 - present:

European Commission, Marie Curie Re-Integration, Postdoctoral Fellowship

2014 - 2015:

High Performance Computing Facilities, Wales, R&D project

2011 - 2014:

European Space Agency (ESA) Support to Science Element, Postdoctoral Fellowship

2010 - 2011

Greek Scholarships Foundation, Greek Ministry of Education, Postdoctoral Fellowship

2002 - 2006

Greek Scholarships Foundation, Greek Ministry of Education, Scholarship for MSc & PhD studies

Research Groups

Publications

2017

Petropoulos, G., McCalmont, J. 2017. An Operational In Situ Soil Moisture & Soil Temperature Monitoring Network for West Wales, UK: The WSMN Network. Sensors 17 (7) 1481 Cadair

Anagnostopoulos, V., Petropoulos, G., Ireland, G., Carlson, T.N. 2017. A modernized version of a 1D soil vegetation atmosphere transfer model for improving its future use in land surface interactions studies. Environmental Modelling and Software 90 pp. 147-156. Cadair

2016

Islam, T., Srivastava, P.K., Petropoulos, G. 2016. Uncertainty quantification in the Infrared surface Emissivity Model (ISEM). IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 9 (12) pp. 5888-5892. Cadair

Petropoulos, G., Srivastava, P.K. 2016. Sensitivity Analysis in Earth Observation Modelling. Elsevier Cadair

Louka, P., Petropoulos, G., Papanikolaou, I. 2016. A Frost Risk Assessment Tool in Agriculture Utilizing MODIS observations and GIS. In M. Fortin., D. Han., A. S. Raghubanshi., P. Kumar., P. C. Pandey. (eds) A Frost Risk Assessment Tool in Agriculture Utilizing MODIS observations and GIS: Geospatial Technology for Water Resource Applications. Taylor & Francis Cadair

Petropoulos, G., Anagnostopoulos, V. 2016. SEVIRI PrePro: A Novel Software Tool for the Pre-processing of SEVIRI Geostationary Orbit EO Data Products. Environmental Modelling and Software 82 pp. 321-329. Cadair

Petropoulos, G., Ireland, G., Lamine, S., Griffiths, H., Ghilain, N., Anagnostopoulos, V., North, M., Srivastava, P.K., Georgopoulou, H. 2016. Operational evapotranspiration estimates from SEVIRI in support of sustainable water management. International Journal of Applied Earth Observation and Geoinformation 49 pp. 175-187. Cadair

Piles, M., Petropoulos, G., Sánchez, N., González-Zamora, Á., Ireland, G., Miles, M. 2016. Towards improved spatio-temporal resolution soil moisture retrievals from the synergy of SMOS and MSG SEVIRI spaceborne observations. Remote Sensing of Environment 180 pp. 403-417. Cadair

Srivastava, P.K., Kerr, Y.Petropoulos, G. 2016. Satellite Soil Moisture Retrieval: Techniques and Applications. Elsevier Cadair

Petropoulos, G., Ireland, G., Griffiths, H., Islam, T., Kalivas, D., Anagnostopoulos, V., Hodges, C., Srivastava, P.K. 2016. Chapter 5 - Spatiotemporal Estimates of Surface Soil Moisture from Space Using the Ts/VI Feature Space. In P. K. Srivastava., G. Petropoulos., Y. H. Kerr. (eds) Satellite Soil Moisture Retrieval: Techniques and Applications. Elsevier pp. 91-108. Cadair

Srivastava, P.K., Islam, T., Singh, S.K., Gupta, M., Petropoulos, G., Wan Jaafar, W.Z., Prasad, R. 2016. Soil moisture deficit estimation through SMOS soil moisture and MODIS land surface temperature. In P. Srivastava., G. P. Petropoulos., Y. H. Kerr. (eds) Satellite Soil Moisture Retrieval: Techniques and Applications. Elsevier pp. 333-347. Cadair

Petropoulos, G., Ireland, G., Griffiths, H., Islam, T., Kalivas, D., Anagnostopoulos, V., Hodges, C., Srivastava, P.K. 2016. Retrievals of soil moisture at high and meso-scale resolution using the EO-defined Ts/VI feature space. In P. Srivastava., G. P. Petropoulos., Y. H. Kerr. (eds) Satellite Soil Moisture Retrieval: Techniques and Applications. Elsevier pp. 87-104. Cadair

Srivastava, P.K., Han, D., Islam, T., Petropoulos, G., Gupta, M., Dai, Q. 2016. Seasonal evaluation of evapotranspiration fluxes from MODIS satellite and mesoscale model downscaled global reanalysis datasets. Theoretical and Applied Climatology 124 (1-2) pp. 461-473. Cadair

Petropoulos, G., Ireland, G. 2016. PROgRESSIon – Investigating the Prototyping of Operational Estimation of Energy Fluxes and Soil Moisture Content Using a Variant of the “Triangle” Inversion Methodology. In D. Fernandez-Prieto., R. Sabia. (eds) Remote Sensing Advances for Earth System Science: The ESA Changing Earth Science Network: Projects 2011-2013. SpringerBriefs in Earth System Sciences) Springer Nature Cadair

Singh, S.K., Srivastava, P.K., Szabó, S., Petropoulos, G.P., Gupta, M., Islam, T. 2016. Landscape transform and spatial metrics for mapping spatiotemporal land cover dynamics using Earth Observation data-sets. Geocarto International 32 (2) pp. 113-127. Cadair

Karamesouti, M., Petropoulos, G., Papanikolaou, I., Kairis, O., Kosmas, K. 2016. Erosion Rates Predictions from PESERA and RUSLE at a Mediterranean site Before and After a Wildfire: Comparison & Implications. Geoderma 261 pp. 44-58. Cadair

Islam, T., Srivastava, P.K., Petropoulos, G.P., Singh, S.K. 2016. Reduced major axis approach for correcting GPM/GMI radiometric biases to coincide with radiative transfer simulation. Journal of Quantitative Spectroscopy and Radiative Transfer 168 pp. 40-45. Cadair

2015

Petropoulos, G.P., North, M.R., Ireland, G., Srivastava, P.K., Rendall, D.V. 2015. Quantifying the prediction accuracy of a 1-D SVAT model at a range of ecosystems in the USA and Australia: evidence towards its use as a tool to study Earth's system interactions. Geoscientific Model Development 8 (10) pp. 3257-3284. Cadair

Biggs, T., Petropoulos, G., Velpuri, N.M., Marshall, M.H., Glenn, E.P., Nagler, P., Messina, A. 2015. Remote Sensing of Actual Evapotranspiration from Croplands. In P. S. Thenkabail. (ed) Remote Sensing of Water Resources, Disasters, and Urban Studies. Taylor & Francis pp. 59-100. Cadair

Islam, T., Srivastava, P.K., Petropoulos, G. 2015. Variational Bayes and the Principal Component Analysis coupled with Bayesian regulation backpropagation network to retrieve total precipitable water (TPW) from GCOM-W1/AMSR2. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 8 (10) pp. 1-6. Cadair

Abbi Said, Y., Petropoulos, G., Srivastava, P.K. 2015. Assessing the influence of atmospheric and topographic correction and inclusion of SWIR bands in burned scars detection from high-resolution EO imagery: A case study using ASTER. Natural Hazards 78 (3) pp. 1609-1628. Cadair

Petropoulos, G., Ireland, G., Cass, A., Srivastava, R.K. 2015. Performance assessment of the SEVIRI Evapotranspiration operational product: Results over diverse Mediterranean ecosystems. IEEE Sensors Journal 15 (6) pp. 3412-3423. Cadair

Petropoulos, G., Ireland, G., Griffiths, H., Kennedy, M.C., Ioannou Katidis, P., Kalivas, D.P. 2015. Extending the Global Sensitivity Analysis of the SimSphere model in the Context of its Future Exploitation by the Scientific Community. Water 7 (5) pp. 2101-2141. Cadair

Srivastava, P.K., Islam, T., Gupta, M., Petropoulos, G., Dai, Q. 2015. WRF Dynamical Downscaling and Bias Correction Schemes for NCEP Estimated Hydro-Meteorological Variables. Water Resources Management 29 (7) pp. 2267-2284. Cadair

Petropoulos, G., Ireland, G., Srivastava, P.K. 2015. Evaluation of the Soil Moisture Operational Estimates From SMOS in Europe: Results Over Diverse Ecosystems. IEEE Sensors Journal 15 (9) pp. 5243-5251. Cadair

Ireland, G., Volpi, M., Petropoulos, G. 2015. Examining the Capability of Supervised Machine Learning Classifiers in Extracting Flooded Areas from Landsat TM Imagery: A Case Study from a Mediterranean Flood. Remote Sensing 7 (3) pp. 3372-3399. Cadair

Petropoulos, G., Ireland, G., Barrett, B. 2015. Surface Soil Moisture Retrievals from Remote Sensing: Current Status, Products & Future Trends. Physics and Chemistry of the Earth 83-84 pp. 36-56. Cadair

Petropoulos, G., North, M., Ireland, G., Srivastava, P.K., Rendall, D.V. 2015. Validating a 1-D SVAT model in a range of USA and Australian ecosystems: evidence towards its use as a tool to study Earth's system interactions. Geoscientific Model Development 8 pp. 2437–2495. Cadair

Ireland, G., Petropoulos, G., Carlson, T., Purdy, S. 2015. Addressing the ability of a land biosphere model to predict key biophysical vegetation characterisation parameters with Global Sensitivity Analysis. Environmental Modelling and Software 65 pp. 94-107. Cadair

Petropoulos, G., Kalivas, D.P., Griffiths, H., Dimou, P.P. 2015. Remote sensing and GIS analysis for mapping spatio-temporal changes of erosion and deposition of two Mediterranean river deltas: The case of the Axios and Aliakmonas rivers, Greece. International Journal of Applied Earth Observation and Geoinformation 35 (B) pp. 217-228. Cadair

North, M., Petropoulos, G., Ireland, G., McCalmont, J. 2015. Appraising the capability of a land biosphere model as a tool in modelling land surface interactions: results from its validation at selected European ecosystems. Copernicus Publications, Earth System Dynamics Discussions pp. 217–265. Cadair

Petropoulos, G., Kalivas, D., Georgopoulou, I.A., Srivastava, P.K. 2015. Urban Vegetation Cover Extraction from Hyperspectral Remote Sensing Imagery & GIS Spatial Analysis Techniques: The Case of Athens, Greece. Journal of Applied Remote Sensing 9 (1) pp. 1-18. Cadair

Ireland, G., Petropoulos, G. 2015. Exploring the Relationships Between Post-fire Vegetation Regeneration Dynamics, Topography and Burn Severity: A case study from the Montane Cordillera Ecozones of Western Canada. Applied Geography 56 pp. 232-248. Cadair

2014

Evans, A.L.W., Lamine, S., Kalivas, D., Petropoulos, G. 2014 (In press). Exploring the Potential of EO data and GIS for Ecosystem Health Modelling in Response to Wildfire: A case study in Central Greece. Environmental Engineering and Management Journal Cadair

Scott, D., Petropoulos, G., Moxley, J., Malcolm, H. 2014. Quantifying the physical composition of urban morphology throughout Wales based on the time series (1989-2011) analysis of Landsat TM/ETM+ images and supporting GIS data. Remote Sensing 6 (12) pp. 11731-11752. Cadair

Petropoulos, G., Griffiths, H., Carlson, T., Ioannou Katidis, P., Holt, T. 2014. SimSphere model sensitivity analysis towards establishing its use for deriving key parameters characterising land surface interactions. Geoscientific Model Development 7 (5) pp. 1873-1887. Cadair

Petropoulos, G., Griffiths, H., Kalivas, D. 2014. Quantifying Spatial and Temporal Vegetation Recovery Dynamics Following a Wildfire Event in a Mediterranean Landscape using EO Data and GIS. Applied Geography 50 pp. 120-131. Cadair

Petropoulos, G., Manevski, K., Carlson, T.N. 2014. Hyperspectral Remote Sensing with emphasis to land cover mapping: from ground to satellite observations. In Q. Weng. (ed) Scales Issues in Remote Sensing. Wiley pp. 285-320. Cadair

Petropoulos, G., Griffiths, H.M., Ioannou Katidis, P., Srivastava, P.K. 2014. Sensitivity Exploration of SimSphere Land Surface Model Towards its Use for Operational Products Development from Earth Observation Data. In P. K. Srivastava., S. Mukherjee., M. Gupta., T. Islam. (eds) Remote Sensing Applications in Environmental Research. Society of Earth Scientists Series Springer Nature pp. 35-56. Cadair

Petropoulos, G., Ireland, G., Srivastava, P.K., Ioannou Katidis, P. 2014. An appraisal of soil moisture operational estimates accuracy from SMOS MIRAS using validated in-situ observations acquired at a Mediterranean environment. International Journal of Remote Sensing 35 (13) pp. 5239-5250. Cadair

2013

Henke, J.M., Petropoulos, G. 2013. A GIS-based Exploration of the Relationships between Human Health, Social Deprivation and Ecosystem Services for Wales. Applied Geography 45 pp. 77-88. Cadair

Petropoulos, G., Griffiths, H.M., Tarantola, S. 2013. A sensitivity analysis of the SimSphere SVAT model in the context of EO-based operational products development. Environmental Modelling and Software 49 pp. 166-179. Cadair

Petropoulos, G., Griffiths, H.M., Dorigo, W., Xaver, A., Gruber, A. 2013. Surface Soil Moisture Estimation: Significance, Controls and Conventional Measurement Techniques. In G. P. Petropoulos. (ed) Remote Sensing of Land Surface Turbulent Fluxes and Soil Surface Moisture Content: State of Art. Taylor & Francis pp. 29-48. Cadair

Petropoulos, G. 2013. Remote Sensing of Land Surface Turbulent Fluxes and Soil Moisture. Taylor & Francis Cadair

Petropoulos, G., Carlson, T., Griffiths, H.M. 2013. Turbulent Fluxes of Heat and Moisture at the Earth’s Surface: Importance, Controlling Parameters & Conventional Measurement Methods. In G. P. Petropoulos. (ed) Remote Sensing of Land Surface Turbulent Fluxes and Soil Surface Moisture Content: State of Art. Taylor & Francis pp. 3-28. Cadair

Volpi, M., Petropoulos, G., Kanevski, M. 2013. Flooding extent cartography with Landsat TM imagery and regularized kernel Fisher's discriminant analysis. Computers and Geosciences 57 pp. 24-31. Cadair

Kalivas, D.P., Petropoulos, G., Athanasiou, I.M., Kolias, V.J. 2013. An intercomparison of burnt area estimates derived from key operational products: analysis of Greek wildland fires 2005-2007. Nonlinear Processes in Geophysics 20 (3) pp. 397-409. Cadair

Griffiths, H.M., Kalivas, D., Petropoulos, G., Dimou, P. 2013. Mapping erosion and deposition changes on the protected wetlands of the Axios River Delta, N. Greece, using remote sensing and GIS. Bulletin of the Geological Society of Greece 47 Cadair

Petropoulos, G. 2013. Remote Sensing of Surface Turbulent Energy Fluxes. In G. Petropoulos. (ed) Remote Sensing of Land Surface Turbulent Fluxes & Soil Moisture. Taylor & Francis Cadair

Barrett, B., Petropoulos, G. 2013. Satellite Remote Sensing of Surface Soil Moisture. In G. Petropoulos. (ed) Remote Sensing of Energy Fluxes and Soil Moisture Content. Chapter 4th edn, Taylor & Francis pp. 85-120. Cadair

Petropoulos, G., Partsinevelos, P., Mitraka, Z. 2013. Change detection of surface mining activity and reclamation based on a machine learning approach of multi-temporal Landsat TM imagery. Geocarto International 28 (4) pp. 323-342. Cadair

Petropoulos, G., Vadrevu, K.P., Kalaitzidis, C. 2013. Spectral Angle Mapper and Object-based classification combined with hyperspectral remote sensing imagery for obtaining land use/cover mapping in a Mediterranean region. Geocarto International 28 (2) pp. 1-16. Cadair

2012

Petropoulos, G.P., Kontoes, C.C., Keramitsoglou, I. 2012. Land cover mapping with emphasis to burnt area delineation using co-orbital ALI and Landsat TM imagery. International Journal of Applied Earth Observation and Geoinformation 18 pp. 344-355. Cadair

Manevski, K., Manakos, I., Petropoulos, G., Kalaitzidis, C. 2012. Spectral discrimination of Mediterranean maquis and phrygana vegetation: results from a case study in Greece. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 5 (2) pp. 604 - 616 . Cadair

Petropoulos, G., Kalaitzidis, C., Vadrevu, K.P. 2012. Support vector machines and object-based classification for obtaining land-use/cover cartography from Hyperion hyperspectral imagery. Computers and Geosciences 41 pp. 99–107. Cadair

Petropoulos, G., Arvanitis, K., Sigrimis, N. 2012. Hyperion hyperspectral imagery analysis combined with machine learning classifiers for Land Use/Cover Mapping. Expert Systems with Applications 39 (3) pp. 3800-3809. Cadair

Elatawneh, A., Petropoulos, G., Kalaitzidis, C., Schneider, T. 2012. Evaluation of diverse classification approaches for land use/cover mapping in a Mediterranean region utilizing Hyperion data. International Journal of Digital Earth pp. 1-23. Cadair

2011

Knorr, W., Pytharoulis, I., Petropoulos, G., Gobron, N. 2011. Combined use of weather forecasting and satellite remote sensing information for fire risk, fire and fire impact monitoring. Computational Ecology & Software 1 (2) pp. 112-120. Cadair

Altatouri, A., Pediaditi, K., Petropoulos, G., Zianis, D., Boretos, N. 2011. Development of a decision support system for the estimation of surface water pollution risk from olive mill waste discharges. Ecological Modeling. Chapter 3th edn, Nova Science Publishers pp. 40-64. Cadair

Petropoulos, G., Carlson, T.N. 2011. Retrievals of turbulent heat fluxes and soil moisture content by Remote Sensing. In Q. Weng. (ed) Advances in Environmental Remote Sensing: Sensors, Algorithms, and Applications. 1st edn, Taylor & Francis pp. 469-501. Cadair

Petropoulos, G., Kontoes, C., Keramitsoglou, I. 2011. Burnt Area Delineation from a uni-temporal perspective based on Landsat TM imagery classification using Support Vector Machines. International Journal of Applied Earth Observation and Geoinformation 13 (1) pp. 70-80. Cadair

Petropoulos, G., Kalaitzidis, C. 2011. Multispectral vegetation indices in remote sensing. Ecological Modeling. Nova Science Publishers pp. 15-39. Cadair

Manevski, K., Manakos, I., Petropoulos, G.P., Kalaitzidis, C. 2011. Discrimination of common Mediterranean plant species using field spectroradiometry. International Journal of Applied Earth Observation and Geoinformation 13 (6) pp. 922-933. Cadair

Pediaditi, K., Buono, F., Pompigna, F., Bogliotti, C., Nurlu, E., Ladisa, G., Petropoulos, G. 2011. A decision support system-based procedure for evaluation and monitoring of protected areas sustainability for the Mediterranean region. Journal of Earth System Science 120 (5) pp. 949-961. Cadair

Pediaditi, K., Stanojevic, M., Kouskouna, C., Karydas, M., Zianis, D., Petropoulos, G., Boretos, N. 2011. A decision support system for assessing and managing environment risk cross borders. Earth Science Informatics 4 (3) pp. 107-115. Cadair

2010

Ganas, A., Lagios, E., Petropoulos, G., Psiloglou, B. 2010. Thermal imaging of Nisyros volcano (Aegean Sea) using ASTER data: estimation of radiative heat flux. International Journal of Remote Sensing 31 (15) EARSeL 29th Conference, “Imagine Europe”. pp. 4033-4047. Cadair

Petropoulos, G.P., Ratto, M., Tarantola, S. 2010. A comparative analysis of emulators for the sensitivity analysis of a land surface process model. Procedia - Social and Behavioral Sciences 2 (6) 6th International Conference on Sensitivity Analysis of Model Output. pp. 7716-7717. Cadair

Petropoulos, G., Vadrevu, K.P., Xanthopoulos, G., Karantounias, G., Scholze, M. 2010. A Comparison of Spectral Angle Mapper and Artificial Neural Network Classifiers Combined with Landsat TM Imagery Analysis for Obtaining Burnt Area Mapping. Sensors 10 (3) pp. 1967-1985. Cadair

Petropoulos, G., Knorr, W., Scholze, M., Boschetti, L., Karantounias, G. 2010. Combining ASTER multispectral imagery analysis and support vector machines for rapid and cost-effective post-fire assessment: a case study from the Greek wildland fires of 2007. Natural Hazards and Earth System Sciences 10 (2) pp. 305-317. Cadair

2009

Petropoulos, G., Wooster, M.J., Carlson, T.N., Kennedy, M.K., Scholze, M. 2009. A global Bayesian sensitivity analysis of the 1d SimSphere soil–vegetation–atmospheric transfer (SVAT) model using Gaussian model emulation. Ecological Modelling 220 (19) pp. 2427-2440. Cadair

Petropoulos, G., Carlson, T.N., Wooster, M.J. 2009. An Overview of the Use of the SimSphere Soil Vegetation Atmosphere Transfer (SVAT) Model for the Study of Land-Atmosphere Interactions. Sensors 9 (6) pp. 4286-4308. Cadair

Petropoulos, G., Carlson, T., Wooster, M., Islam, S. 2009. A Review of Ts/VI Remote Sensing Based Methods for the Retrieval of Land Surface Fluxes and Soil Surface Moisture Content. Progress in Physical Geography 33 (2) pp. 224-250. Cadair

Petropoulos, G., Wooster, M., Carlson, T., Karantounias, G. 2009. Implementation of a new sensitivity analysis method applied to a land surface process model (SVAT). In S. Giannopoulos. (ed) Hydrology. Cadair