Calibrated chlorophyll concentration based on fluorescence sensor and reference sample data for water bottle samplings during RV POLARSTERN cruise PS124 ...

This dataset contains calibrated chlorophyll concentrations for CTD bottle data collected with the ship based CTD rosette during the cruise PS124 - COSMUS (Continental Shelf Multidisciplinary Flux Study) in the southern Weddell Sea between January and March 2021. Factory calibrated chlorophyll fluor...

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Bibliographic Details
Main Authors: Rogge, Andreas, Tippenhauer, Sandra, Spahic, Susanne, Hargesheimer, Theresa, Holtappels, Moritz
Format: Dataset
Language:English
Published: PANGAEA 2023
Subjects:
chlorophyll
CTD/Rosette
Filchner Trough
Weddell Sea
Event label
DATE/TIME
LATITUDE
LONGITUDE
Bottle number
Pressure, water
DEPTH, water
Chlorophyll a
Quality flag, chlorophyll a
CTD, Sea-Bird, SBE 911plus
CTD, Sea-Bird, SBE 911plus; measured with Fluorometer, WET Labs, ECO FLRTD
CTD, Sea-Bird, SBE 911plus; measured with Fluorometer, WET Labs, ECO FLRTD; followed by fluorometric measurement of acetone extracted chlorophyll against standard
Seadatanet flag Data quality control procedures according to SeaDataNet 2010
PS124
Polarstern
Bentho-Pelagic Processes @ AWI AWI_BPP
Biological Oceanography @ AWI AWI_BioOce
Physical Oceanography @ AWI AWI_PhyOce
Online Access:https://dx.doi.org/10.1594/pangaea.963561
https://doi.pangaea.de/10.1594/PANGAEA.963561
Description
Summary:This dataset contains calibrated chlorophyll concentrations for CTD bottle data collected with the ship based CTD rosette during the cruise PS124 - COSMUS (Continental Shelf Multidisciplinary Flux Study) in the southern Weddell Sea between January and March 2021. Factory calibrated chlorophyll fluorescence sensor data was field calibrated using chlorophyll reference samples measured against chlorophyll a standard. Pigment extraction from 1L water samples filtered onto GFF filters was performed with 90 % acetone including cell disruption with glass beads. Linear regression between sample chlorophyll concentration (n=62) and chlorophyll fluorescence sensor data from CTD bottle measurements was accomplished with a Robust Linear Model and Andrew's Wave weight function using the python package statsmodels v0.14.0. Coefficient of determination (R²) of the resulting regression was 0.95 while excluding 3 outliers. The resulting coefficient was 0.4118 and the constant 0.004. Note the intense noise in fluorescence ...

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