Author: Publisher:
ISBN:
Category : Chlorophyll
Languages : en
Pages : 124
Book Description
The Second SeaWiFS HPLC Analysis Round-robin Experiment (SeaHARRE-2)
Author: The Second SeaWiFS HPLC Analysis Round-Robin Experiment (SeaHARRE-2)
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781721150564
Category :
Languages : en
Pages : 124
Book Description
Eight international laboratories specializing in the determination of marine pigment concentrations using high performance liquid chromatography (HPLC) were intercompared using in situ samples and a variety of laboratory standards. The field samples were collected primarily from eutrophic waters, although mesotrophic waters were also sampled to create a dynamic range in chlorophyll concentration spanning approximately two orders of magnitude (0.3 25.8 mg m-3). The intercomparisons were used to establish the following: a) the uncertainties in quantitating individual pigments and higher-order variables (sums, ratios, and indices); b) an evaluation of spectrophotometric versus HPLC uncertainties in the determination of total chlorophyll a; and c) the reduction in uncertainties as a result of applying quality assurance (QA) procedures associated with extraction, separation, injection, degradation, detection, calibration, and reporting (particularly limits of detection and quantitation). In addition, the remote sensing requirements for the in situ determination of total chlorophyll a were investigated to determine whether or not the average uncertainty for this measurement is being satisfied. The culmination of the activity was a validation of the round-robin methodology plus the development of the requirements for validating an individual HPLC method. The validation process includes the measurements required to initially demonstrate a pigment is validated, and the measurements that must be made during sample analysis to confirm a method remains validated. The so-called performance-based metrics developed here describe a set of thresholds for a variety of easily-measured parameters with a corresponding set of performance categories. The aggregate set of performance parameters and categories establish a) the overall performance capability of the method, and b) whether or not the capability is consistent with the required accuracy objectives. Goddard Space Flight Center
Phytoplankton Pigments
Author: Suzanne RoyPublisher: Cambridge University Press
ISBN: 1139500996
Category : Science
Languages : en
Pages : 891
Book Description
Pigments act as tracers to elucidate the fate of phytoplankton in the world's oceans and are often associated with important biogeochemical cycles related to carbon dynamics in the oceans. They are increasingly used in in situ and remote-sensing applications, detecting algal biomass and major taxa through changes in water colour. This book is a follow-up to the 1997 volume Phytoplankton Pigments in Oceanography (UNESCO Press). Since then, there have been many advances concerning phytoplankton pigments. This book includes recent discoveries on several new algal classes particularly for the picoplankton, and on new pigments. It also includes many advances in methodologies, including liquid chromatography-mass spectrometry (LC-MS) and developments and updates on the mathematical methods used to exploit pigment information and extract the composition of phytoplankton communities. The book is invaluable primarily as a reference for students, researchers and professionals in aquatic science, biogeochemistry and remote sensing.
SeaWiFS Postlaunch Technical Report Series
Author: Elaine R. FirestonePublisher:
ISBN:
Category : Oceanography
Languages : en
Pages : 48
Book Description
SIMBIOS Project 2002 Annual Report
Author: Giulietta S. FargionPublisher:
ISBN:
Category : Oceanography
Languages : en
Pages : 168
Book Description
SeaWiFS Postlaunch Technical Report Series
Author: Jean-François BerthonPublisher:
ISBN:
Category : Colorimetric analysis
Languages : en
Pages : 44
Book Description
SeaWiFS Postlaunch Technical Report Series
Author: Satellite Derived Global Ocean Product Validation/Evaluation
Author: SeungHyun SonPublisher: MDPI
ISBN: 3039436457
Category : Science
Languages : en
Pages : 279
Book Description
Ocean satellite remote sensing plays important roles in the observations of physical, biological and biogeochemical features in inland, coastal, and global ocean waters, with high temporal and spatial resolution. The satellite-measured ocean products are used for near-real-time ocean monitoring and climate data records to understand short-/long-term variabilities in marine environments and ecosystems as well as for decision making tools to manage social, economic, and environmental benefits. Validation/evaluation including a combination of field measurements and inter-satellite comparison is an essential step in providing more accurate satellite-derived ocean products. In this Special Issue, 14 papers have been published and include research on validation/evaluation, retrieval algorithms of ocean geophysical and biogeochemical parameters, and application of the satellite ocean products in the regional and global ocean. Subjects treated include: Sea Surface Temperature; Sea Ice Surface Temperature from VIIRS thermal infrared sensor; Sea Ice Detection from Spectroradiometer; Sea Surface Winds from HY-2A Scatterometer and GNSS—Reflectometry; Wave Height from Sentinel-3A SAR; Retrievals of Sea Surface Salinity, Chlorophyll-a, Particulate Organic Carbon, Particulate Backscattering, Marine Fishery resource, and Submesoscale Eddies from multiple Ocean Colour sensors.
SIMBIOS Project 2003 Annual Report
Author: Sea WiFS Postlaunch Technical Report Series
Author: Stanford Baird HookerPublisher:
ISBN:
Category : Oceanography
Languages : en
Pages : 86
Book Description