T-FLaP advances: instrumental and operative implementation

Marcelli, Marco; Piermattei, Viviana; Madonia, Alice; Lacava, Teodosio; Mainardi, Umberto

doi:10.1080/1755876x.2015.1117765

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…On the other hand, the other 19 stations which comprise class B are located in shallower waters (up to 100 m depth), where the NAP resuspension is not negligible, and the land-originated CDOM concentration increases due to the proximity of river outflows (i.e., Cavone, Agri, and Sinni Rivers). Such results are in accordance with the strong coastal-offshore gradients of bio-optical variables observed by Marcelli et al [75] in the same area through the use of in situ innovative technologies. Class A showed a peak at 400 nm, a slight decrease up to about 500 nm, and a more marked fall up to longer wavelengths (beyond 600 nm).…”

supporting

confidence: 92%

Evaluation of MODIS—Aqua Chlorophyll-a Algorithms in the Basilicata Ionian Coastal Waters

et al. 2018

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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-Siegel-Maritorena (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 R 2 value of 0.12) of the investigated empirical algorithm and, conversely, the good performance of semi-analytical algorithms (adjusted R 2 ranging from 0.74 to 0.79). The coexistence 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 R 2 value of 0.86). Such a tuned algorithm version can provide useful information which can be used by local authorities within regional management systems.

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supporting

confidence: 92%

Evaluation of MODIS—Aqua Chlorophyll-a Algorithms in the Basilicata Ionian Coastal Waters

et al. 2018

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“…In accordance with Mueller et al [52] protocol, each water column was classified as coastal water because SPM concentration of each one is more than 0.5 mg/L ( Table 2). Sea temperature measurements of each location were acquired with three multi-parametric platforms: SeaBird Electronics SBE 911-plus Conductivity-Temperature-Depth (CTD), ELFO, which is equipped with Falmouth C-T sensor to measure sea temperature [63] and TFLAP, which acquires sea temperature with MicroTSG (MicroThermosalinograph) SBE 45 sensor [64]. Data were processed in accordance with UNESCO standards [65].…”

Section: In Situ and Satellite Datamentioning

confidence: 99%

Retrieval of Sea Surface Temperature from MODIS Data in Coastal Waters

Cavalli

2017

Sustainability

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Accurate measurements of sea surface temperature retrieved from remote images is a fundamental need for monitoring ocean and coastal waters. This study proposes a method for retrieving accurate measurements of SST in coastal waters. The method involves the estimation of effect of total suspended particulate matter (SPM) concentration on the value of sea surface emissivity (SSE) and the inclusion of this effect in SSE value that is put into SST calculation. Data collected in three Italian coastal waters were exploited to obtain SST skin and SSE values and to analyze SPM effects on SSE value. The method was tested on MODIS images. Satellite measurements of SST obtained with current operational algorithm, which does not require SSE value as explicit input, were compared with in situ values of SST skin and RMSD is equal to 1.13 K. Moreover, SST data were retrieved with an algorithm for retrieving SST measurements from MODIS data, which allows the inclusion of SSE value with SPM effect. These data were compared with in situ values of SST skin , and RMSD is equal to 0.68 K.

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Chromophoric Dissolved Organic Matter as a Tracer of Fecal Contamination for Bathing Water Quality Monitoring in the Northern Tyrrhenian Sea (Latium, Italy)

Madonia

Caruso

Piazzolla

et al. 2020

JMSE

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Dissolved organic matter present in natural aquatic environments is a heterogeneous mixture of allochthonous and autochthonous materials. In coastal areas vulnerable to sewage waste, its biologically active component, the chromophoric dissolved organic matter (CDOM), is expected to change its composition and distribution in relation to anthropogenic activities, suggesting the possible use of CDOM as a proxy of fecal contamination. This study aimed at testing such hypothesis by investigating and relating the optical properties of CDOM with Escherichia coli abundance, physiological state, and enzymatic activities in a bathing area of the Northern Tyrrhenian Sea (Latium, Italy) affected by urban wastewaters. The parallel factor analysis (PARAFAC) applied to the excitation–emission matrices (EEMs) of CDOM allowed us to distinguish three main components: C1 (λEx/λEm = 342 nm/435 nm), C2 (λEx/λEm = 281–373 nm/460 nm), and C3 (λEx/λEm = 286 nm/360 nm). C1 and C2 corresponded to humic acids of terrestrial origin, while C3 to tryptophan, whose fluorescence peak was detected close to sewage sites, strongly related to active E. coli cells. The comparison between spectral and microbiological methods is suggested as a suitable approach to monitor bathing water quality for the implementation of coastal observing system capability.

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T-FLaP advances: instrumental and operative implementation

Cited by 4 publications

References 11 publications

Evaluation of MODIS—Aqua Chlorophyll-a Algorithms in the Basilicata Ionian Coastal Waters

Evaluation of MODIS—Aqua Chlorophyll-a Algorithms in the Basilicata Ionian Coastal Waters

Retrieval of Sea Surface Temperature from MODIS Data in Coastal Waters

Chromophoric Dissolved Organic Matter as a Tracer of Fecal Contamination for Bathing Water Quality Monitoring in the Northern Tyrrhenian Sea (Latium, Italy)

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