Items where Author is "Simis, SGH"

Jiang, D, Jones, I, Liu, X, Simis, SGH, Cretaux, J-F, Albergel, C, Tyler, A and 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. 104021. https://doi.org/10.1016/j.jag.2024.104021

Liu, X, Warren, M, Selmes, N and Simis, SGH 2024 Quantifying decadal stability of lake reflectance and chlorophyll-a from medium-resolution ocean color sensors. Remote Sensing of Environment, 306. 114120. https://doi.org/10.1016/j.rse.2024.114120

Jordan, TM, Simis, SGH, Selmes, N, Sent, G, Ienna, F and Martinez-Vicente, V 2023 Spatial structure of in situ reflectance in coastal and inland waters: implications for satellite validation. Frontiers in Remote Sensing, 4. https://doi.org/10.3389/frsen.2023.1249521

Ceccaroni, L, Woods, SM, Butkevičienė, E, Parkinson, S, Sprinks, J, Costa, P, Simis, SGH, Lessin, G, Liñán, S, Companys, B, Bonfill, E and Piera, J 2023 The Role of Citizen Science in Promoting Ocean and Water Literacy in School Communities: The ProBleu Methodology. Sustainability, 15 (14). 11410. https://doi.org/10.3390/su151411410

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 and 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). 1345. https://doi.org/10.3390/rs15051345

Lehmann, MK, Gurlin, D, Pahlevan, N, Alikas, K, Anstee, J, Balasubramanian, SV, Barbosa, CCF, Binding, CE, Bracher, A, Bresciani, M, Burtner, A, Cao, Z, Dekker, AG, Di Vittorio, C, Drayson, N, Errera, RM, Fernandez, V, Ficek, D, Fichot, CG, Gege, P, Giardino, C, Gitelson, AA, Greb, SR., Henderson, H, Higa, H, Rahaghi, AI, Jamet, C, Jiang, D, Jordan, TM, Kangro, K, Kravitz, JA, Kristoffersen, AS, Kudela, R, Li, L, Ligi, M, Loisel, H, Lohrenz, S, Ma, R, Maciel, DA, Malthus, TJ, Matsushita, B, Matthews, MW, Minaudo, C, Mishra, DR, Mishra, S, Moore, T, Moses, WJ, Nguyễn, H, Novo, EMLM, Novoa, S, Odermatt, D, O’Donnell, DM, Olmanson, LG, Ondrusek, M, Oppelt, N, Ouillon, S, Pereira Filho, W, Plattner, S, Verdu, AR, Salem, SI, Schalles, JF, Simis, SGH, Siswanto, E, Smith, B, Somlai-Schweiger, I, Soppa, MA, Spyrakos, E, Tessin, E, Van der Woerd, HJ, Vander Woude, A, Vandermeulen, RA, Vantrepotte, V, Wernand, M, Werther, M, Young, K and Yue, L 2023 GLORIA - A globally representative hyperspectral in situ dataset for optical sensing of water quality. Scientific Data, 10 (1). https://doi.org/10.1038/s41597-023-01973-y

Jiang, D, Scholze, J, Liu, X, Simis, SGH, Stelzer, K, Müller, D, Hunter, P, Tyler, A and 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. 103188. https://doi.org/10.1016/j.jag.2023.103188

Carrea, L, Cretaux, J-F, Liu, X, Wu, Y, Calmettes, B, Duguay, CR, Merchant, CJ, Selmes, N, Simis, SGH, Warren, M, Yesou, H, Müller, D, Jiang, D, Embury, O, Bergé-Nguyen, M and Albergel, C 2023 Satellite-derived multivariate world-wide lake physical variable timeseries for climate studies. Scientific Data, 10 (1). https://doi.org/10.1038/s41597-022-01889-z

Courtecuisse, E, Marchetti, E, Oxborough, K, Hunter, PD, Spyrakos, E, Tilstone, GH and Simis, SGH 2023 Optimising Multispectral Active Fluorescence to Distinguish the Photosynthetic Variability of Cyanobacteria and Algae. Sensors, 23 (1). 461. https://doi.org/10.3390/s23010461

Zolfaghari, K, Pahlevan, N, Simis, SGH, O'Shea, RE and Duguay, CR 2022 Sensitivity of remotely sensed pigment concentration via Mixture Density Networks (MDNs) to uncertainties from atmospheric correction. Journal of Great Lakes Research. https://doi.org/10.1016/j.jglr.2022.12.010

Werther, M, Odermatt, D, Simis, SGH, Gurlin, D, Lehmann, MK, Kutser, T, Gupana, R, Varley, A, Hunter, PD, Tyler, AN and 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. 113295. https://doi.org/10.1016/j.rse.2022.113295

Free, G, Bresciani, M, Pinardi, M, Simis, SGH, Liu, X, Albergel, C and Giardino, C 2022 Investigating lake chlorophyll-a responses to the 2019 European double heatwave using satellite remote sensing. Ecological Indicators, 142. 109217. https://doi.org/10.1016/j.ecolind.2022.109217

Burggraaff, O, Werther, M, Boss, ES, Simis, SGH and Snik, F 2022 Accuracy and Reproducibility of Above-Water Radiometry With Calibrated Smartphone Cameras Using RAW Data. Frontiers in Remote Sensing, 3. https://doi.org/10.3389/frsen.2022.940096

Werther, M, Odermatt, D, Simis, SGH, Gurlin, D, Jorge, DSF, Loisel, H, Hunter, PD, Tyler, AN and 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. 279-300. https://doi.org/10.1016/j.isprsjprs.2022.06.015

Jordan, TM, Simis, SGH, Grötsch, PMM and Wood, J 2022 Incorporating a Hyperspectral Direct-Diffuse Pyranometer in an Above-Water Reflectance Algorithm. Remote Sensing, 14 (10). 2491. https://doi.org/10.3390/rs14102491

Simis, SGH, Hunter, PD, Matthews, MW, Spyrakos, E, Tyler, A and Vaiciute, D 2022 Improved hyperspectral inversion of aquatic reflectance under non-uniform vertical mixing. Optics Express, 30 (6). 9655. https://doi.org/10.1364/OE.450374

Pahlevan, N, Smith, B, Alikas, K, Anstee, J, Barbosa, CCF, Binding, CE, Bresciani, M, Cremella, B, Giardino, C, Gurlin, D, Fernandez, V, Jamet, C, Kangro, K, Lehmann, MK, Loisel, H, Matsushita, B, Hà, N, Olmanson, L, Potvin, G, Simis, SGH, VanderWoude, A, Vantrepotte, V and Ruiz-Verdu, A 2022 Simultaneous retrieval of selected optical water quality indicators from Landsat-8, Sentinel-2, and Sentinel-3. Remote Sensing of Environment, 270. 112860. https://doi.org/10.1016/j.rse.2021.112860

Gong, M, O’Donnell, R, Miller, C, Scott, M, Simis, SGH, Groom, SB, Tyler, A, Hunter, P, Spyrakos, E, Merchant, CJ, Maberly, SC and Carvalho, L 2022 Adaptive smoothing to identify spatial structure in global lake ecological processes using satellite remote sensing data. Spatial Statistics, 50. 100615. https://doi.org/10.1016/j.spasta.2022.100615

Tilstone, GH, Pardo, S, Simis, SGH, Qin, P, Selmes, N, Dessailly, D and Kwiatkowska, E 2021 Consistency between Satellite Ocean Colour Products under High Coloured Dissolved Organic Matter Absorption in the Baltic Sea. Remote Sensing, 14 (1). 89. https://doi.org/10.3390/rs14010089

Zolfaghari, K, Pahlevan, N, Binding, CE, Gurlin, D, Simis, SGH, Verdu, AR, Li, L, Crawford, CJ, VanderWoude, A, Errera, R, Zastepa, A and Duguay, CR 2021 Impact of Spectral Resolution on Quantifying Cyanobacteria in Lakes and Reservoirs: A Machine-Learning Assessment. IEEE Transactions on Geoscience and Remote Sensing. 1-20. https://doi.org/10.1109/TGRS.2021.3114635

Liu, X, Steele, C, Simis, SGH, Warren, M, Tyler, A, Spyrakos, E, Selmes, N and Hunter, P 2021 Retrieval of Chlorophyll-a concentration and associated product uncertainty in optically diverse lakes and reservoirs. Remote Sensing of Environment, 267. 112710. https://doi.org/10.1016/j.rse.2021.112710

Warren, MA, Simis, SGH and Selmes, N 2021 Complementary water quality observations from high and medium resolution Sentinel sensors by aligning chlorophyll-a and turbidity algorithms. Remote Sensing of Environment, 265. 112651. https://doi.org/10.1016/j.rse.2021.112651

Schuback, N, Tortell, PD, Berman-Frank, I, Campbell, DA, Ciotti, AM, Courtecuisse, E, Erickson, ZK, Fujiki, T, Halsey, K, Hickman, AE, Huot, Y, Gorbunov, MY, Hughes, DJ, Kolber, ZS, Moore, CM, Oxborough, K, Prášil, O, Robinson, CM, Ryan-Keogh, TJ, Silsbe, GM, Simis, SGH, Suggett, DJ, Thomalla, S and Varkey, DR 2021 Single-Turnover Variable Chlorophyll Fluorescence as a Tool for Assessing Phytoplankton Photosynthesis and Primary Productivity: Opportunities, Caveats and Recommendations. Frontiers in Marine Science, 8. https://doi.org/10.3389/fmars.2021.690607

Gong, M, Miller, C, Scott, M, O’Donnell, R, Simis, SGH, Groom, SB, Tyler, A, Hunter, P and 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. https://doi.org/10.1007/s00477-021-02017-w

Pahlevan, N, Mangin, A, Balasubramanian, SV, Smith, BD, Alikas, K, Arai, K, Barbosa, CCF, Bélanger, S, Binding, CE, Bresciani, M, Giardino, C, Gurlin, D, Fan, Y, Harmel, T, Hunter, P, Ishikaza, J, Kratzer, S, Lehmann, MK, Ligi, M, Ma, R, Martin-Lauzer, FR, Olmanson, L, Oppelt, N, Pan, Y, Peters, S, Reynaud, N, Sander de Carvalho, LA, Simis, SGH, Spyrakos, E, Steinmetz, F, Stelzer, K, Sterckx, S, Tormos, T, Tyler, A, Vanhellemont, Q and Warren, M 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. 112366. https://doi.org/10.1016/j.rse.2021.112366

O'Shea, RE, Pahlevan, N, Smith, B, Bresciani, M, Egerton, T, Giardino, C, Li, L, Moore, T, Ruiz-Verdu, A, Ruberg, S, Simis, SGH, Stumpf, R and Vaiciute, D 2021 Advancing cyanobacteria biomass estimation from hyperspectral observations: Demonstrations with HICO and PRISMA imagery. Remote Sensing of Environment, 266. 112693. https://doi.org/10.1016/j.rse.2021.112693

Willén, U, Simis, SGH, Schröder, M, Scanlon, T, Sathyendranath, S, Quegan, S, Paul, F, Meyssignac, B, Merchant, CJ, Lavergne, T, Jones, R, Ghent, D, Dorigo, W, Ciais, P, Chuvieco, E, Buchwitz, M, Brockmann, C, Boutin, J, Bennett, V, Bastos, A, Bartsch, A, Ardhuin, F, Hollmann, R, Hegglin, MI and Popp, T 2020 Consistency of satellite climate data records for Earth system monitoring. Bulletin of the American Meteorological Society, prepri (2020). https://doi.org/10.1175/BAMS-D-19-0127.1

Castagna, A, Simis, SGH, Dierssen, H, Vanhellemont, Q, Sabbe, K and Vyverman, W 2020 Extending Landsat 8: Retrieval of an Orange contra-Band for Inland Water Quality Applications. Remote Sensing, 12 (4). 637. https://doi.org/10.3390/rs12040637

Martinez-Vicente, V, Clark, JR, Corradi, P, Aliani, S, Arias, M, Bochow, M, Bonnery, G, Cole, MJ, Cózar, A, Donnelly, R, Echevarría, F, Galgani, F, Garaba, SP, Goddijn-Murphy, L, Lebreton, L, Leslie, HA, Lindeque, PK, Maximenko, N, Martin-Lauzer, F, Moller, D, Murphy, P, Palombi, L, Raimondi, V, Reisser, J, Romero, L, Simis, SGH, Sterckx, S, Thompson, RC, Topouzelis, KN, van Sebille, E, Veiga, JM and Vethaak, AD 2019 Measuring Marine Plastic Debris from Space: Initial Assessment of Observation Requirements. Remote Sensing, 11 (20). 2443. https://doi.org/10.3390/rs11202443

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

Fink, G, Burke, S, Simis, SGH, Kangur, K, Kutser, T and Mulligan, M 2018 Management Options to Improve Water Quality in Lake Peipsi: Insights from Large Scale Models and Remote Sensing. Water Resources Management. https://doi.org/10.1007/s11269-018-2156-5

Liu, G, Simis, SGH, Li, L, Wang, Q, Li, Y, Song, K, Lyu, H, Zheng, Z and Shi, K 2018 A Four-Band Semi-Analytical Model for Estimating Phycocyanin in Inland Waters From Simulated MERIS and OLCI Data. IEEE Transactions on Geoscience and Remote Sensing, 56 (3). 1374-1385. https://doi.org/10.1109/TGRS.2017.2761996

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Spyrakos, E, O'Donnell, R, Hunter, P, Miller, C, Scott, M, Simis, SGH, Neil, C, Barbosa, CCF, Binding, CE, Bradt, S, Bresciani, M, Dall’Olmo, G, Giardino, C, Gitelson, AA, Kutser, T, Li, Lin, Matsushita, B, Martinez Vicente, V, Matthew, MW, Ogashawara, I, Ruiz-Verdu, A, Schalles, JF, Tebbs, E, Zhang, Y and Tyler, AN 2017 Optical types of inland and coastal waters. Limnology and Oceanography. https://doi.org/10.1002/lno.10674

Qin, P, Simis, SGH and Tilstone, GH 2017 Radiometric validation of atmospheric correction for MERIS in the Baltic Sea based on continuous observations from ships and AERONET-OC. Remote Sensing of Environment, 200. 263-280. https://doi.org/10.1016/j.rse.2017.08.024

Groetsch, PMM, Gege, P, Simis, SGH, Eleveld, MA and Peters, SWM 2017 Variability of adjacency effects in sky reflectance measurements. Optics Letters, 42 (17). 3359. https://doi.org/10.1364/OL.42.003359

Groetsch, PMM, Gege, P, Simis, SGH, Eleveld, MA and Peters, SWM 2017 Validation of a spectral correction procedure for sun and sky reflections in above-water reflectance measurements. Optics Express, 25 (16). A742. https://doi.org/10.1364/OE.25.00A742

Houliez, E, Simis, SGH, Nenonen, S, Ylöstalo, P and Seppälä, J 2017 Basin-scale spatio-temporal variability and control of phytoplankton photosynthesis in the Baltic Sea: The first multiwavelength fast repetition rate fluorescence study operated on a ship-of-opportunity. Journal of Marine Systems, 169. 40-51. https://doi.org/10.1016/j.jmarsys.2017.01.007

Simis, SGH, Ylöstalo, P, Kallio, KY, Spilling, K and Kutser, T 2017 Contrasting seasonality in optical-biogeochemical properties of the Baltic Sea. PLOS ONE, 12 (4). e0173357. https://doi.org/10.1371/journal.pone.0173357

Markelin, L, Simis, SGH, Hunter, P, Spyrakos, E, Tyler, A, Clewley, D and Groom, SB 2017 Atmospheric Correction Performance of Hyperspectral Airborne Imagery over a Small Eutrophic Lake under Changing Cloud Cover. Remote Sensing, 9 (1). 2-22. https://doi.org/10.3390/rs9010002

Danovaro, R, Carugati, L, Berzano, M, Cahill, AE, Carvalho, S, Chenuil, A, Corinaldesi, C, Cristina, S, Davidson, R, Dell'Anno, A, Dzhembekova, N, Garces, E, Gasol, JM, Goela, P, Feral, J-P, Ferrera, I, Forster, RM, Kurekin, A, Rastelli, E, Marinova, V, Miller, PI, Moncheva, S, Newton, A, Pearman, JK, Pitois, SG, Reñé, A, Rodriguez-Ezpeleta, N, Saggiomo, V, Simis, SGH, Stefanova, K, Wilson, C, Lo Martire, M, Greco, S, Cochrane, SKJ, Mangoni, O and Borja, A 2016 Implementing and innovating marine monitoring approaches for assessing marine environmental status [in special issue: Bridging the Gap Between Policy and Science in Assessing the Health Status of Marine Ecosystems] Frontiers in Marine Science, 3, 213. https://doi.org/10.3389/fmars.2016.00213

Ylöstalo, P, Seppälä, J, Kaitala, S, Maunula, P and Simis, SGH 2016 Loadings of dissolved organic matter and nutrients from the Neva River into the Gulf of Finland – Biogeochemical composition and spatial distribution within the salinity gradient. Marine Chemistry, 186. 58-71. https://doi.org/10.1016/j.marchem.2016.07.004

Le Tortorec, AH, Tahvanainen, P, Kremp, A and Simis, SGH 2016 Diversity of luciferase sequences and bioluminescence production in Baltic Sea Alexandrium ostenfeldii. European Journal of Phycology. 1-11. https://doi.org/10.1080/09670262.2016.1160441

Silsbe, GM, Oxborough, K, Suggett, DJ, Forster, RM, Ihnken, S, Komárek, O, Lawrenz, E, Prášil, O, Röttgers, R, Šicner, M, Simis, SGH, Van Dijk, MA and Kromkamp, JC 2015 Toward autonomous measurements of photosynthetic electron transport rates: An evaluation of active fluorescence-based measurements of photochemistry. Limnology and Oceanography: Methods, 13 (3). 138-155. https://doi.org/10.1002/lom3.10014

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Martinez-Vicente, V, Simis, SGH, Alegre, R, Land, PE and Groom, SB 2013 Above-water reflectance for the evaluation of adjacency effects in Earth observation data: initial results and methods comparison for near-coastal waters in the Western Channel, UK. Journal of the European Optical Society-Rapid Publications, 8. 13060. https://doi.org/10.2971/jeos.2013.13060

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Bonfill Molina, E, Turo, M, Ceccaroni, L, Woods, S, Parkinson, S, Sprinks, J, Lessin, G, Simis, SGH, Flynn, KJ, Butkevičienė, E, Costa, P, Ribeiro, A, Cardoso, F and Piera, J 2024 NEW OPPORTUNITIES TO PROMOTE BLUE SCHOOLS: SCHOLAR GRANTS, EDUCATIONAL RESOURCES, AND CITIZEN SCIENCE UNDER THE PROBLEU PROJECT. [Other] In: 6th International Conference on Education and New Learning Technologies, Palma, Spain, 1-3 July 2024. Palma, Spain, 10224-10225.

Papathanasopoulou, E, Simis, SGH, Alikas, K, Ansper, A, Anttila, J, Barillé, A, Barillé, L, Brando, V, Bresciani, M, Bučas, M, Gernez, PM, Giardino, C, Harin, N, Hommersom, A, Kangro, K, Kauppila, P, Koponen, S, Laanen, M, Neil, C, Papadakis, D, Peters, S, Poikane, S, Poser, K, Dionisio Pires, M, Riddick, CAL, Spyrakos, E, Tyler, A, Vaiciute, D, Warren, M and Zoffoli, ML 2019 Satellite-assisted monitoring of water quality to support the implementation of the Water Framework Directive. UNSPECIFIED, 1pp. (UNSPECIFIED)