{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T23:20:08Z","timestamp":1768000808474,"version":"3.49.0"},"reference-count":95,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2018,6,21]],"date-time":"2018-06-21T00:00:00Z","timestamp":1529539200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Standard chlorophyll-a (chl-a) algorithms, which rely on Moderate Resolution Imaging Spectro-radiometer (MODIS) data aboard the Aqua satellite, usually show different performances depending on the area under consideration. In this paper, we assessed their accuracy in retrieving the chl-a concentration in the Basilicata Ionian Coastal waters (Ionian Sea, South of Italy). The outputs of one empirical (Med-OC3) and two semi-analytical algorithms, the Garver\u2013Siegel\u2013Maritorena (GSM) and the Generalized Inherent Optical Properties (GIOP) model, have been compared with ground measurements acquired during three different measurement campaigns. The achieved results prove the poor accuracy (adjusted R2 value of 0.12) of the investigated empirical algorithm and, conversely, the good performance of semi-analytical algorithms (adjusted R2 ranging from 0.74 to 0.79). The co-existence of Coloured Dissolved Organic Matter (CDOM) and Non-Algal Particles (NAP) has likely determined large errors in the reflectance ratios used in the OCx form algorithms. Finally, a local scale assessment of the bio-optical properties, on the basis of the in situ dataset, allowed for the definition of an operational local scale-tuned version of the MODIS chl-a algorithm, which assured increased accuracy (adjusted R2 value of 0.86). Such a tuned algorithm version can provide useful information which can be used by local authorities within regional management systems.<\/jats:p>","DOI":"10.3390\/rs10070987","type":"journal-article","created":{"date-parts":[[2018,6,22]],"date-time":"2018-06-22T02:46:21Z","timestamp":1529635581000},"page":"987","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Evaluation of MODIS\u2014Aqua Chlorophyll-a Algorithms in the Basilicata Ionian Coastal Waters"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6732-4419","authenticated-orcid":false,"given":"Teodosio","family":"Lacava","sequence":"first","affiliation":[{"name":"Institute of Methodologies for Environmental Analysis, Italian National Research Council, C.da Santa Loja, Tito Scalo, 85050 Potenza, Italy"}]},{"given":"Emanuele","family":"Ciancia","sequence":"additional","affiliation":[{"name":"School of Engineering, University of Basilicata, Via dell\u2019Ateneo Lucano 10, 85100 Potenza, Italy"}]},{"given":"Carmine","family":"Di Polito","sequence":"additional","affiliation":[{"name":"School of Engineering, University of Basilicata, Via dell\u2019Ateneo Lucano 10, 85100 Potenza, Italy"}]},{"given":"Alice","family":"Madonia","sequence":"additional","affiliation":[{"name":"Laboratory of Experimental Oceanology and Marine Ecology, Department of Ecological and Biological Sciences, Tuscia University, Molo Vespucci snc, Port of Civitavecchia, 00053 Civitavecchia (RM), Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8311-8615","authenticated-orcid":false,"given":"Simone","family":"Pascucci","sequence":"additional","affiliation":[{"name":"Institute of Methodologies for Environmental Analysis, Italian National Research Council, C.da Santa Loja, Tito Scalo, 85050 Potenza, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7619-6685","authenticated-orcid":false,"given":"Nicola","family":"Pergola","sequence":"additional","affiliation":[{"name":"Institute of Methodologies for Environmental Analysis, Italian National Research Council, C.da Santa Loja, Tito Scalo, 85050 Potenza, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9000-9070","authenticated-orcid":false,"given":"Viviana","family":"Piermattei","sequence":"additional","affiliation":[{"name":"Laboratory of Experimental Oceanology and Marine Ecology, Department of Ecological and Biological Sciences, Tuscia University, Molo Vespucci snc, Port of Civitavecchia, 00053 Civitavecchia (RM), Italy"}]},{"given":"Valeria","family":"Satriano","sequence":"additional","affiliation":[{"name":"Institute of Methodologies for Environmental Analysis, Italian National Research Council, C.da Santa Loja, Tito Scalo, 85050 Potenza, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3875-7909","authenticated-orcid":false,"given":"Valerio","family":"Tramutoli","sequence":"additional","affiliation":[{"name":"School of Engineering, University of Basilicata, Via dell\u2019Ateneo Lucano 10, 85100 Potenza, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2018,6,21]]},"reference":[{"key":"ref_1","unstructured":"European Commission (2008). 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