Variation in ocean colour may help predict cod and haddock recruitment

2013 ◽  
Vol 491 ◽  
pp. 187-197 ◽  
Author(s):  
MK Trzcinski ◽  
E Devred ◽  
T Platt ◽  
S Sathyendranath
Keyword(s):  
Ocean Colour

Surface chlorophyll a estimation in the Arabian Sea using IRS-P4 Ocean Colour Monitor (OCM) satellite data

2002 ◽  
Vol 23 (16) ◽  
pp. 3305-3305
Author(s):  
P. Chauhan ◽  
M. Mohan ◽  
R. K. Sarangi ◽  
B. Kumari ◽  
S. Nayak ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Satellite Data ◽  
Arabian Sea ◽  
Ocean Colour

From silk to satellite: half a century of ocean colour anomalies in the Northeast Atlantic

2014 ◽  
Vol 20 (7) ◽  
pp. 2117-2123 ◽  
Author(s):  
Dionysios E. Raitsos ◽  
Yaswant Pradhan ◽  
Samantha J. Lavender ◽  
Ibrahim Hoteit ◽  
Abigail McQuatters-Gollop ◽  
...  
Keyword(s):  
Ocean Colour ◽  
Northeast Atlantic

Ocean colour analysis in coastal waters by airborne sensors

1990 ◽  
Vol 11 (5) ◽  
pp. 705-725 ◽  
Author(s):  
G. ZIBORDI ◽  
G. MARACCI ◽  
P. SCHLITTENHARDT
Keyword(s):  
Coastal Waters ◽  
Ocean Colour ◽  
Airborne Sensors

scholarly journals Ocean colour opportunities from Meteosat Second and Third Generation geostationary platforms

Ocean Science ◽  
2016 ◽  
Vol 12 (3) ◽  
pp. 703-713 ◽  
Author(s):  
Ewa J. Kwiatkowska ◽  
Kevin Ruddick ◽  
Didier Ramon ◽  
Quinten Vanhellemont ◽  
Carsten Brockmann ◽  
...  
Keyword(s):  
Sediment Transport ◽  
Water Clarity ◽  
Local Area ◽  
Satellite System ◽  
Third Generation ◽  
Ocean Colour ◽  
Eu Member States ◽  
Aquaculture Management ◽  
Polar Orbiting Satellite ◽  
The Eu

Abstract. Ocean colour applications from medium-resolution polar-orbiting satellite sensors have now matured and evolved into operational services. These applications are enabled by the Sentinel-3 OLCI space sensors of the European Earth Observation Copernicus programme and the VIIRS sensors of the US Joint Polar Satellite System programme. Key drivers for the Copernicus ocean colour services are the national obligations of the EU member states to report on the quality of marine, coastal and inland waters for the EU Water Framework Directive and Marine Strategy Framework Directive. Further applications include CO2 sequestration, carbon cycle and climate, fisheries and aquaculture management, near-real-time alerting to harmful algae blooms, environmental monitoring and forecasting, and assessment of sediment transport in coastal waters. Ocean colour data from polar-orbiting satellite platforms, however, suffer from fractional coverage, primarily due to clouds, and inadequate resolution of quickly varying processes. Ocean colour remote sensing from geostationary platforms can provide significant improvements in coverage and sampling frequency and support new applications and services. EUMETSAT's SEVIRI instrument on the geostationary Meteosat Second Generation platforms (MSG) is not designed to meet ocean colour mission requirements, however, it has been demonstrated to provide valuable contribution, particularly in combination with dedicated ocean colour polar observations. This paper describes the ongoing effort to develop operational ocean colour water turbidity and related products and user services from SEVIRI. SEVIRI's multi-temporal capabilities can benefit users requiring improved local-area coverage and frequent diurnal observations. A survey of user requirements and a study of technical capabilities and limitations of the SEVIRI instruments are the basis for this development and are described in this paper. The products will support monitoring of sediment transport, water clarity, and tidal dynamics by providing hourly coverage and long-term time series of the diurnal observations. Further products and services are anticipated from EUMETSAT's FCI instruments on Meteosat Third Generation satellites (MTG), including potential chlorophyll a products.

Absorption properties of phytoplankton in the Lower Estuary and Gulf of St. Lawrence (Canada)

2008 ◽  
Vol 65 (8) ◽  
pp. 1721-1737 ◽  
Author(s):  
Suzanne Roy ◽  
Frédérick Blouin ◽  
André Jacques ◽  
Jean-Claude Therriault
Keyword(s):  
Spring Bloom ◽  
Size Structure ◽  
Particulate Material ◽  
Dominant Factor ◽  
Pigment Composition ◽  
Ocean Colour ◽  
Absorption Properties ◽  
Ultraviolet Range ◽  
Before And After ◽  
Phytoplankton Absorption

Models of ocean colour rely on information about phytoplankton absorption, which varies according to community composition and photoacclimation. Here we show that pigment packaging, which is strongly determined by the size structure of local algal populations, represents a dominant factor in the Estuary and Gulf of St. Lawrence, accounting for ~50%–80% of the reduction in phytoplankton absorption at 440 nm during the spring bloom periods and for 24%–48% before and after the blooms. This is consistent with the importance of diatoms in this environment. Comparison between three methods of estimating packaging gave average values within less than 20% of each other during the blooms. Changes in pigment composition, which also affect phytoplankton absorption, were more important outside bloom periods (particularly in the Gulf), although this influence was relatively modest (11%–13%). This was accompanied by an increase in photoprotective pigments and an absorption peak in the ultraviolet range (~330 nm). Regional variations in phytoplankton absorption reflected bloom conditions, whereas detrital particulate material was highest in the upstream Saguenay region (often more than 60% of the absorption of total particulate material at 440 nm (ap(440))) and was at least 20%–30% elsewhere. This information is a first step towards the development of regional models of ocean colour.

scholarly journals Bio-Optical Characterization and Ocean Colour Inversion in the Eastern Lagoon of New Caledonia, South Tropical Pacific

2018 ◽  
Vol 10 (7) ◽  
pp. 1043 ◽  
Author(s):  
Luciane Favareto ◽  
Natália Rudorff ◽  
Milton Kampel ◽  
Robert Frouin ◽  
Rüdiger Röttgers ◽  
...  
Keyword(s):  
New Caledonia ◽  
Optical Characterization ◽  
Tropical Pacific ◽  
Ocean Colour

scholarly journals Fiducial Reference Measurements for Satellite Ocean Colour (FRM4SOC)

2020 ◽  
Vol 12 (8) ◽  
pp. 1322 ◽  
Author(s):  
Andrew Clive Banks ◽  
Riho Vendt ◽  
Krista Alikas ◽  
Agnieszka Bialek ◽  
Joel Kuusk ◽  
...  
Keyword(s):  
White Paper ◽  
Uncertainty Estimation ◽  
Earth Observation ◽  
Observation Data ◽  
Ocean Colour ◽  
Satellite Validation ◽  
The Earth ◽  
Earth Observation Data ◽  
Reference Measurements

Earth observation data can help us understand and address some of the grand challenges and threats facing us today as a species and as a planet, for example climate change and its impacts and sustainable use of the Earth’s resources. However, in order to have confidence in earth observation data, measurements made at the surface of the Earth, with the intention of providing verification or validation of satellite-mounted sensor measurements, should be trustworthy and at least of the same high quality as those taken with the satellite sensors themselves. Metrology tells us that in order to be trustworthy, measurements should include an unbroken chain of SI-traceable calibrations and comparisons and full uncertainty budgets for each of the in situ sensors. Until now, this has not been the case for most satellite validation measurements. Therefore, within this context, the European Space Agency (ESA) funded a series of Fiducial Reference Measurements (FRM) projects targeting the validation of satellite data products of the atmosphere, land, and ocean, and setting the framework, standards, and protocols for future satellite validation efforts. The FRM4SOC project was structured to provide this support for evaluating and improving the state of the art in ocean colour radiometry (OCR) and satellite ocean colour validation through a series of comparisons under the auspices of the Committee on Earth Observation Satellites (CEOS). This followed the recommendations from the International Ocean Colour Coordinating Group’s white paper and supports the CEOS ocean colour virtual constellation. The main objective was to establish and maintain SI traceable ground-based FRM for satellite ocean colour and thus make a fundamental contribution to the European system for monitoring the Earth (Copernicus). This paper outlines the FRM4SOC project structure, objectives and methodology and highlights the main results and achievements of the project: (1) An international SI-traceable comparison of irradiance and radiance sources used for OCR calibration that set measurement, calibration and uncertainty estimation protocols and indicated good agreement between the participating calibration laboratories from around the world; (2) An international SI-traceable laboratory and outdoor comparison of radiometers used for satellite ocean colour validation that set OCR calibration and comparison protocols; (3) A major review and update to the protocols for taking irradiance and radiance field measurements for satellite ocean colour validation, with particular focus on aspects of data acquisition and processing that must be considered in the estimation of measurement uncertainty and guidelines for good practice; (4) A technical comparison of the main radiometers used globally for satellite ocean colour validation bringing radiometer manufacturers together around the same table for the first time to discuss instrument characterisation and its documentation, as needed for measurement uncertainty estimation; (5) Two major international side-by-side field intercomparisons of multiple ocean colour radiometers, one on the Atlantic Meridional Transect (AMT) oceanographic cruise, and the other on the Acqua Alta oceanographic tower in the Gulf of Venice; (6) Impact and promotion of FRM within the ocean colour community, including a scientific road map for the FRM-based future of satellite ocean colour validation and vicarious calibration (based on the findings of the FRM4SOC project, the consensus from two major international FRM4SOC workshops and previous literature, including the IOCCG white paper on in situ ocean colour radiometry).

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