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Article

Exploring Global Remote Sensing Products for Water Quality Assessment: Lake Nicaragua case study

Baltodano A, Agramont A, Lekarkar K, Spyrakos E, Reusen I & van Griensven A (2024) Exploring Global Remote Sensing Products for Water Quality Assessment: Lake Nicaragua case study. Remote Sensing Applications: Society and Environment, 36, Art. No.: 101331. https://doi.org/10.1016/j.rsase.2024.101331

Article

Substantial increase of organic carbon storage in Chinese lakes

Liu D, Shi K, Chen P, Yan N, Ran L, Kutser T, Tyler AN, Spyrakos E, Woolway RI, Zhang Y & Duan H (2024) Substantial increase of organic carbon storage in Chinese lakes. Nature Communications, 15, Art. No.: 8049. https://doi.org/10.1038/s41467-024-52387-2

Article

Framework for Regional to Global Extension of Optical Water Types for Remote Sensing of Optically Complex Transitional Water Bodies

Atwood EC, Jackson T, Laurenson A, Jonsson BF, Spyrakos E, Jiang D, Sent G, Selmes N, Simis S, Danne O, Tyler A & Groom S (2024) Framework for Regional to Global Extension of Optical Water Types for Remote Sensing of Optically Complex Transitional Water Bodies. Remote Sensing, 16 (17). https://doi.org/10.3390/rs16173267

Article

Impacts of droughts and human activities on water quantity and quality: Remote sensing observations of Lake Qadisiyah, Iraq

Jiang D, Jones I, Liu X, Simis SGH, Cretaux J, Albergel C & Spyrakos E (2024) Impacts of droughts and human activities on water quantity and quality: Remote sensing observations of Lake Qadisiyah, Iraq. International Journal of Applied Earth Observation and Geoinformation, 132, Art. No.: 104021. https://doi.org/10.1016/j.jag.2024.104021

Article

A New Algorithm Using Support Vector Machines to Detect and Monitor Bloom-Forming Pseudo-nitzschia from OLCI Data

González Vilas L, Spyrakos E, Pazos Y & Torres Palenzuela JM (2024) A New Algorithm Using Support Vector Machines to Detect and Monitor Bloom-Forming Pseudo-nitzschia from OLCI Data. Remote Sensing, 16 (2), Art. No.: 298. https://doi.org/10.3390/rs16020298

Article

A century of human interventions on sediment flux variations in the Danube-Black Sea transition zone

Constantinescu AM, Tyler AN, Stanica A, Spyrakos E, Hunter PD, Catianis I & Panin N (2023) A century of human interventions on sediment flux variations in the Danube-Black Sea transition zone. Frontiers in Marine Science, 10, Art. No.: 1068065. https://doi.org/10.3389/fmars.2023.1068065

Article

GLORIA - A globally representative hyperspectral in situ dataset for optical sensing of water quality

Lehmann MK, Gurlin D, Pahlevan N, Anstee J, Balasubramanian SV, Barbosa CCF, Binding C, Bracher A, Bresciani M, Burtner A, Cao Z, Dekker AG, Jiang D, Spyrakos E & Werther M (2023) GLORIA - A globally representative hyperspectral in situ dataset for optical sensing of water quality. Scientific Data, 10 (1), Art. No.: 100. https://doi.org/10.1038/s41597-023-01973-y

Article

Estimating the concentration of total suspended solids in inland and coastal waters from Sentinel-2 MSI: A semi-analytical approach

Jiang D, Matsushita B, Pahlevan N, Gurlin D, Fichot CG, Harringmeyer J, Sent G, Brito AC, Brotas V, Werther M, Mascarenhas V, Blake M, Hunter P, Tyler A & Spyrakos E (2023) Estimating the concentration of total suspended solids in inland and coastal waters from Sentinel-2 MSI: A semi-analytical approach. ISPRS Journal of Photogrammetry and Remote Sensing, 204, pp. 362-377. https://doi.org/10.1016/j.isprsjprs.2023.09.020

Article

Water color from Sentinel-2 MSI data for monitoring large rivers: Yangtze and Danube

Wang S, Jiang X, Spyrakos E, Li J, McGlinchey C, Constantinescu AM & Tyler AN (2023) Water color from Sentinel-2 MSI data for monitoring large rivers: Yangtze and Danube. Geo-spatial Information Science, pp. 1-16. https://doi.org/10.1080/10095020.2023.2258950

Article

A data driven approach to flag land affected signals in satellite derived water quality from small lakes

Jiang D, Scholze J, Liu X, Simis SG, Stelzer K, Müller D, Hunter P, Tyler A & Spyrakos E (2023) A data driven approach to flag land affected signals in satellite derived water quality from small lakes. International Journal of Applied Earth Observation and Geoinformation, 117, Art. No.: 103188. https://doi.org/10.1016/j.jag.2023.103188

Article

Airborne Drones for Water Quality Mapping in Inland, Transitional and Coastal Waters-MapEO Water Data Processing and Validation

De Keukelaere L, Moelans R, Knaeps E, Sterckx S, Reusen I, De Munck D, Simis SGH, Constantinescu AM, Scrieciu A, Katsouras G, Mertens W, Hunter PD, Spyrakos E & Tyler A (2023) Airborne Drones for Water Quality Mapping in Inland, Transitional and Coastal Waters-MapEO Water Data Processing and Validation. Remote Sensing, 15 (5), Art. No.: 1345. https://doi.org/10.3390/rs15051345

Article

Investigating the Backscatter of Marine Plastic Litter Using a C- and X-Band Ground Radar, during a Measurement Campaign in Deltares

Simpson MD, Marino A, de Maagt P, Gandini E, de Fockert A, Hunter P, Spyrakos E, Telfer T & Tyler A (2023) Investigating the Backscatter of Marine Plastic Litter Using a C- and X-Band Ground Radar, during a Measurement Campaign in Deltares. Remote Sensing, 15 (6), p. 1654. https://doi.org/10.3390/rs15061654

Article

Optimising Multispectral Active Fluorescence to Distinguish the Photosynthetic Variability of Cyanobacteria and Algae

Courtecuisse E, Marchetti E, Oxborough K, Hunter PD, Spyrakos E, Tilstone GH & Simis SGH (2023) Optimising Multispectral Active Fluorescence to Distinguish the Photosynthetic Variability of Cyanobacteria and Algae. Sensors, 23 (1), Art. No.: 461. https://doi.org/10.3390/s23010461

Article

A Bayesian approach for remote sensing of chlorophyll-a and associated retrieval uncertainty in oligotrophic and mesotrophic lakes

Werther M, Odermatt D, Simis SGH, Gurlin D, Lehmann MK, Kutser T, Gupana R, Varley A, Hunter PD, Tyler AN & Spyrakos E (2022) A Bayesian approach for remote sensing of chlorophyll-a and associated retrieval uncertainty in oligotrophic and mesotrophic lakes. Remote Sensing of Environment, 283, Art. No.: 113295. https://doi.org/10.1016/j.rse.2022.113295

Article

Monitoring of Plastic Islands in River Environment Using Sentinel-1 SAR Data

Simpson MD, Marino A, de Maagt P, Gandini E, Hunter P, Spyrakos E, Tyler A & Telfer T (2022) Monitoring of Plastic Islands in River Environment Using Sentinel-1 SAR Data. Remote Sensing, 14 (18), Art. No.: 4473. https://doi.org/10.3390/rs14184473

Article

Characterising retrieval uncertainty of chlorophyll-a algorithms in oligotrophic and mesotrophic lakes and reservoirs

Werther M, Odermatt D, Simis SGH, Gurlin D, Jorge DSF, Loisel H, Hunter PD, Tyler AN & Spyrakos E (2022) Characterising retrieval uncertainty of chlorophyll-a algorithms in oligotrophic and mesotrophic lakes and reservoirs. ISPRS Journal of Photogrammetry and Remote Sensing, 190, pp. 279-300. https://doi.org/10.1016/j.isprsjprs.2022.06.015

Article

Determination of optical markers of cyanobacterial physiology from fluorescence kinetics

Courtecuisse E, Oxborough K, Tilstone GH, Spyrakos E, Hunter PD & Simis SGH (2022) Determination of optical markers of cyanobacterial physiology from fluorescence kinetics. Journal of Plankton Research, 44 (3), pp. 365-385. https://doi.org/10.1093/plankt/fbac025

Article

Improved hyperspectral inversion of aquatic reflectance under non-uniform vertical mixing

Simis S, Hunter P, Matthews M, Spyrakos E, Tyler A & Vaiciute D (2022) Improved hyperspectral inversion of aquatic reflectance under non-uniform vertical mixing. Optics Express, 30 (6), pp. 9655-9673. https://doi.org/10.1364/oe.450374

Article

Adaptive smoothing to identify spatial structure in global lake ecological processes using satellite remote sensing data

Gong M, O'Donnell R, Miller C, Scott M, Simis S, Groom S, Tyler A, Hunter P, Spyrakos E, Merchant C, Maberly S & Carvalho L (2022) Adaptive smoothing to identify spatial structure in global lake ecological processes using satellite remote sensing data. Spatial Statistics. https://doi.org/10.1016/j.spasta.2022.100615

Article

State space functional principal component analysis to identify spatiotemporal patterns in remote sensing lake water quality

Gong M, Miller C, Scott M, O'Donnell R, Simis S, Groom S, Tyler A, Hunter P & Spyrakos E (2021) State space functional principal component analysis to identify spatiotemporal patterns in remote sensing lake water quality. Stochastic Environmental Research and Risk Assessment, 35 (12), pp. 2521-2536. https://doi.org/10.1007/s00477-021-02017-w

Conference Paper (published)

Monitoring Surfactants Pollution Potentially Related to Plastics in the World Gyres Using Radar Remote Sensing

Simpson M, Marino A, de Maagt P, Gandini E, Hunter P, Spyrakos E, Tyler A, Ackermann N, Hajnsek I, Nunziata F & Telfer T (2021) Monitoring Surfactants Pollution Potentially Related to Plastics in the World Gyres Using Radar Remote Sensing. In: 2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS. IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium, Brussels, Belgium, 11.07.2021-16.07.2021. Piscataway, NJ, USA: IEEE. https://doi.org/10.1109/igarss47720.2021.9553406

Article

Retrieval of Chlorophyll-a concentration and associated product uncertainty in optically diverse lakes and reservoirs

Liu X, Steele C, Simis S, Warren M, Tyler A, Spyrakos E, Selmes N & Hunter P (2021) Retrieval of Chlorophyll-a concentration and associated product uncertainty in optically diverse lakes and reservoirs. Remote Sensing of Environment, 267, Art. No.: 112710. https://doi.org/10.1016/j.rse.2021.112710

Article

Meta-classification of remote sensing reflectance to estimate trophic status of inland and nearshore waters

Werther M, Spyrakos E, Simis SGH, Odermatt D, Stelzer K, Krawczyk H, Berlage O, Hunter P & Tyler A (2021) Meta-classification of remote sensing reflectance to estimate trophic status of inland and nearshore waters. ISPRS Journal of Photogrammetry and Remote Sensing, 176, pp. 109-126. https://doi.org/10.1016/j.isprsjprs.2021.04.003

Article

ACIX-Aqua: A global assessment of atmospheric correction methods for Landsat-8 and Sentinel-2 over lakes, rivers, and coastal waters

Pahlevan N, Mangin A, Balasubramanian SV, Smith B, Alikas K, Arai K, Barbosa C, Bélanger S, Binding C, Bresciani M, Giardino C, Hunter P, Simis S, Spyrakos E & Tyler A (2021) ACIX-Aqua: A global assessment of atmospheric correction methods for Landsat-8 and Sentinel-2 over lakes, rivers, and coastal waters. Remote Sensing of Environment, 258, Art. No.: 112366. https://doi.org/10.1016/j.rse.2021.112366

Article

Machine Learning Methods Applied to the Prediction of Pseudo-nitzschia spp. Blooms in the Galician Rias Baixas (NW Spain)

Bellas Aláez FM, Torres Palenzuela JM, Spyrakos E & Gonzalez Vilas L (2021) Machine Learning Methods Applied to the Prediction of Pseudo-nitzschia spp. Blooms in the Galician Rias Baixas (NW Spain). ISPRS International Journal of Geo-Information, 10 (4), Art. No.: 199. https://doi.org/10.3390/ijgi10040199

Conference Paper (published)

Moving towards global satellite based products for monitoring of inland and coastal waters. Regional examples from Europe and South America

Spyrakos E, Hunter P, Simis S, Neil C, Riddick C, Wang S, Varley A, Blake M, Groom S, Palenzuela JT, Gonzalez LV, Cardenas C, Frangopulos M, Vega XA, Iriarte JL & Tyler A (2020) Moving towards global satellite based products for monitoring of inland and coastal waters. Regional examples from Europe and South America. In: 2020 IEEE Latin American GRSS and ISPRS Remote Sensing Conference, LAGIRS 2020. IEEE Latin American GRSS & ISPRS Remote Sensing Conference (LAGIRS 2020), Santiago, Chile, 22.03.2020-26.03.2020. Piscataway, NJ, USA: Institute of Electrical and Electronics Engineers Inc. pp. 363-368. https://doi.org/10.1109/LAGIRS48042.2020.9165653

Article

Changes of water clarity in large lakes and reservoirs across China observed from long-term MODIS

Wang S, Li J, Zhang B, Lee Z, Spyrakos E, Feng L, Liu C, Zhao H, Wu Y, Zhu L, Jia L, Wan W, Zhang F, Shen Q, Tyler AN & Zhang X (2020) Changes of water clarity in large lakes and reservoirs across China observed from long-term MODIS. Remote Sensing of Environment, 247, Art. No.: 111949. https://doi.org/10.1016/j.rse.2020.111949

Article

Pseudo-nitzschia Blooms in a Coastal Upwelling System: Remote Sensing Detection, Toxicity and Environmental Variables

Torres Palenzuela JM, González Vilas L, Bellas FM, Garet E, González-Fernández ? & Spyrakos E (2019) Pseudo-nitzschia Blooms in a Coastal Upwelling System: Remote Sensing Detection, Toxicity and Environmental Variables. Water, 11 (9), Art. No.: 1954. https://doi.org/10.3390/w11091954

Article

A global approach for chlorophyll-a retrieval across optically complex inland waters based on optical water types

Neil C, Spyrakos E, Hunter PD & Tyler AN (2019) A global approach for chlorophyll-a retrieval across optically complex inland waters based on optical water types. Remote Sensing of Environment, 229, pp. 159-178. https://doi.org/10.1016/j.rse.2019.04.027

Article

Standardized spectral and radiometric calibration of consumer cameras

Burggraaff O, Schmidt N, Zamorano J, Pauly K, Pascual S, Tapia C, Spyrakos E & Snik F (2019) Standardized spectral and radiometric calibration of consumer cameras. Optics Express, 27 (14), pp. 19075-19101. https://doi.org/10.1364/OE.27.019075

Article

Assessment of atmospheric correction algorithms for the Sentinel-2A MultiSpectral Imager over coastal and inland waters

Warren MA, Simis SGH, Martinez-Vicente V, Poser K, Bresciani M, Alikas K, Spyrakos E, Giardino C & Ansper A (2019) Assessment of atmospheric correction algorithms for the Sentinel-2A MultiSpectral Imager over coastal and inland waters. Remote Sensing of Environment, 225, pp. 267-289. https://doi.org/10.1016/j.rse.2019.03.018

Article

Nonparametric statistical downscaling for the fusion of data of different spatiotemporal support

Wilkie CJ, Miller CA, Scott EM, O'Donnell RA, Hunter PD, Spyrakos E & Tyler AN (2019) Nonparametric statistical downscaling for the fusion of data of different spatiotemporal support. Environmetrics, 30 (3), Art. No.: e2549. https://doi.org/10.1002/env.2549

Article

The potential hidden age of dissolved organic carbon exported by peatland streams

Dean JF, Garnett MH, Spyrakos E & Billett MF (2019) The potential hidden age of dissolved organic carbon exported by peatland streams. Journal of Geophysical Research: Biogeosciences, 124 (2), pp. 328-341. https://doi.org/10.1029/2018JG004650

Article

Trophic state assessment of global inland waters using a MODIS-derived Forel-Ule index

Wang S, Li J, Zhang B, Spyrakos E, Tyler AN, Shen Q, Zhang F, Kuster T, Lehmann MK, Wu Y & Peng D (2018) Trophic state assessment of global inland waters using a MODIS-derived Forel-Ule index. Remote Sensing of Environment, 217, pp. 444-460. https://doi.org/10.1016/j.rse.2018.08.026

Article

Optical types of inland and coastal waters

Spyrakos E, O'Donnell R, Hunter P, Miller C, Scott EM, Simis S, Neil C, Barbosa C, Binding C, Bradt S, Bresciani M, Dall'Olmo G, Giardino C, Gitelson A, Kutser T, Li L, Matsushita B, Martinez-Vicente V, Matthews M, Ogashawara I, Ruiz-Verdu A, Schalles J, Tebbs E, Zhang Y & Tyler A (2018) Optical types of inland and coastal waters. Limnology and Oceanography, 63 (2), pp. 846-870. https://doi.org/10.1002/lno.10674

Article

Spatio-seasonal variability of chromophoric dissolved organic matter absorption and responses to photobleaching in a large shallow temperate lake

Aulló-Maestro ME, Hunter P, Spyrakos E, Mercatoris P, Kovács AW, Horváth H, Preston T, Présing M, Torres Palenzuela J & Tyler A (2017) Spatio-seasonal variability of chromophoric dissolved organic matter absorption and responses to photobleaching in a large shallow temperate lake. Biogeosciences, 14 (5), pp. 1215-1233. https://doi.org/10.5194/bg-14-1215-2017

Article

Atmospheric Correction Performance of Hyperspectral Airborne Imagery over a Small Eutrophic Lake under Changing Cloud Cover

Markelin L, Simis S, Hunter P, Spyrakos E, Tyler A, Clewley D & Groom S (2016) Atmospheric Correction Performance of Hyperspectral Airborne Imagery over a Small Eutrophic Lake under Changing Cloud Cover. Remote Sensing, 9 (1), Art. No.: 2. http://www.mdpi.com/2072-4292/9/1/2/htm; https://doi.org/10.3390/rs9010002

Article

Developments in Earth observation for the assessment and monitoring of inland, transitional, coastal and shelf-sea waters

Tyler A, Hunter P, Spyrakos E, Groom S, Constantinescu A & Kitchen J (2016) Developments in Earth observation for the assessment and monitoring of inland, transitional, coastal and shelf-sea waters. Science of the Total Environment, 572, pp. 1307-1321. https://doi.org/10.1016/j.scitotenv.2016.01.020

Article

Spatio-seasonal variability of chromophoric dissolved organic matter absorption and responses to photobleaching in a large shallow temperate lake

Aullo-Maestro ME, Hunter P, Spyrakos E, Mercatoris P, Kovacs AW, Horvath H, Preston T, Presing M, Torres-Palenzuela JM & Tyler A (2016) Spatio-seasonal variability of chromophoric dissolved organic matter absorption and responses to photobleaching in a large shallow temperate lake. Biogeosciences. https://doi.org/10.5194/bg-2016-329

Conference Paper (published)

Data Fusion of Remote-sensing and In-lake chlorophyll a Data Using Statistical Downscaling

Wilkie CJ, Scott EM, Miller C, Tyler AN, Hunter PD & Spyrakos E (2015) Data Fusion of Remote-sensing and In-lake chlorophyll a Data Using Statistical Downscaling. In: Procedia Environmental Sciences, volume 26. Spatial Statistics conference 2015, Avignon, France, 09.06.2015-12.06.2015. Elsevier BV, pp. 123-126. https://doi.org/10.1016/j.proenv.2015.05.014

Article

Validation of Envisat MERIS algorithms for chlorophyll retrieval in a large, turbid and optically-complex shallow lake

Palmer S, Hunter P, Lankester T, Hubbard S, Spyrakos E, Tyler A, Presing M, Horvath H, Lamb A, Balzter H & Toth V (2015) Validation of Envisat MERIS algorithms for chlorophyll retrieval in a large, turbid and optically-complex shallow lake. Remote Sensing of Environment, 157, pp. 158-169. https://doi.org/10.1016/j.rse.2014.07.024

Article

Support Vector Machine-based method for predicting Pseudo-nitzschia spp. blooms in coastal waters (Galician rias, NW Spain)

González Vilas L, Spyrakos E, Torres Palenzuela JM & Pazos Y (2014) Support Vector Machine-based method for predicting Pseudo-nitzschia spp. blooms in coastal waters (Galician rias, NW Spain). Progress in Oceanography, 124, pp. 66-77. https://doi.org/10.1016/j.pocean.2014.03.003

Article

Modelling paralytic shellfish toxins (PSTs) transfer and accumulation in populations of two planktonic grazers

Spyrakos E, Frangópulos M, Barreiro A & Guisande C (2013) Modelling paralytic shellfish toxins (PSTs) transfer and accumulation in populations of two planktonic grazers. Harmful Algae, 26, pp. 60-70. https://doi.org/10.1016/j.hal.2013.04.003

Article

Remote sensing chlorophyll a of optically complex waters (rias Baixas, NW Spain): Application of a regionally specific chlorophyll a algorithm for MERIS full resolution data during an upwelling cycle

Spyrakos E, González Vilas L, Torres Palenzuela JM & Barton ED (2011) Remote sensing chlorophyll a of optically complex waters (rias Baixas, NW Spain): Application of a regionally specific chlorophyll a algorithm for MERIS full resolution data during an upwelling cycle. Remote Sensing of Environment, 115 (10), pp. 2471-2485. https://doi.org/10.1016/j.rse.2011.05.008

Article

Spatiotemporal patterns of marine mammal distribution in coastal waters of Galicia, NW Spain

Spyrakos E, Santos-Diniz TC, Martinez-Iglesias G, Torres-Palenzuela JM & Pierce GJ (2011) Spatiotemporal patterns of marine mammal distribution in coastal waters of Galicia, NW Spain. Hydrobiologia, 670 (1), pp. 87-109. https://doi.org/10.1007/s10750-011-0722-4

Article

Ingestion and clearance rates of the red Noctiluca scintillans fed on the toxic dinoflagellate Alexandrium minutum (Halim)

Frangópulos M, Spyrakos E & Guisande C (2011) Ingestion and clearance rates of the red Noctiluca scintillans fed on the toxic dinoflagellate Alexandrium minutum (Halim). Harmful Algae, 10 (3), pp. 304-309. https://doi.org/10.1016/j.hal.2010.11.002

Article

Neural network estimation of chlorophyll a from MERIS full resolution data for the coastal waters of Galician rias (NW Spain)

González Vilas L, Spyrakos E & Torres Palenzuela JM (2011) Neural network estimation of chlorophyll a from MERIS full resolution data for the coastal waters of Galician rias (NW Spain). Remote Sensing of Environment, 115 (2), pp. 524-535. https://doi.org/10.1016/j.rse.2010.09.021