@Article{FavaretoRKFRDMD:2018:BiChOc,
author = "Favareto, Luciane Rafaele and Rudorff, Nat{\'a}lia and Kampel,
Milton and Frouin, Robert and R{\"o}ttgers, R{\"y}diger and
Doxaran, David and Murakami, Hiroshi and Dupouy, C{\'e}cile",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {University of California San
Diego} and {Institute of Coastal Research Helmholtz-Zentrum
Geesthach} and {University of Sorbonne} and {Japan Aerospace
Exploration Agency} and {Aix-Marseille University}",
title = "Bio-optical characterization and ocean colour inversion in the
Eastern Lagoon of New Caledonia, South Tropical Pacific",
journal = "Remote Sensing",
year = "2018",
volume = "10",
number = "7",
pages = "e1043",
month = "july",
keywords = "marine remote sensing reflectance, bio-optical properties, ocean
colour algorithms, eastern lagoon of New Caledonia, Southwest
Tropical Pacific Ocean.",
abstract = "The Eastern Lagoon of New Caledonia (ELNC) is a semi-enclosed
system surrounded by an extensive coral reef barrier. The system
has been suffering impacts from climate variability and
anthropogenic activities, including mining exploitation. Satellite
monitoring is thus an essential tool to detect such changes. The
present study aimed to assess the bio-optical variability of the
ELNC and examine the applicability of ocean colour algorithms,
using in situ bio-optical and radiometric data, collected during
the March 2014 CALIOPE 2 cruise. The chlorophyll a concentration
(Chla) varied from 0.130.72 mg·m\−3 , and the coastal
stations were spectrally dominated by non-algal particles (NAP)
and coloured dissolved organic matter (CDOM) (>80% of the total
non-water absorption at 443 nm), due to the contribution of
allochthonous sources. The phytoplankton specific absorption was
generally lower (mean, 0.049 m2 ·mg Chla \−1 ) than typical
values observed for the corresponding Chla range, as well as the
spectral slopes of the absorption of CDOM plus NAP (adg) (mean,
0.016 nm\−1 ) and of the particle backscattering
coefficient (bbp) (mean, 0.07 nm\−1 ). The remote sensing
reflectance obtained using two in-water approaches and modelled
from Inherent Optical Properties (IOPs) showed less than 20%
relative percent differences (RPD). Chla estimates were highly
biased for the empirical (OC4 and OC3) and semi-analytical (GSM,
QAA, GIOP, LMI) algorithms, especially at the coastal stations.
Excluding these stations, the GSM01 yielded the best retrievals
with 3540% RPD. adg(443) was well retrieved by all algorithms with
~18% RPD, and bbp(443) with ~40% RPD. Turbidity algorithms also
performed reasonably well (30% RPD), showing the capacity and
usefulness of the derived products to monitor the water quality of
the ELNC, provided accurate atmospheric correction of the
satellite data. Regionally tuned algorithms may potentially
improve the Chla retrievals, but better parameterization schemes
that consider the spatiotemporal variability of the specific IOPs
are still needed.",
doi = "10.3390/rs10071043",
url = "http://dx.doi.org/10.3390/rs10071043",
issn = "2072-4292",
language = "en",
targetfile = "favareto_bio.pdf",
urlaccessdate = "28 mar. 2024"
}