Xi, Hongyan; Wiegmann, Sonja; Hohe, Christian; Schmidt, Ina; Bracher, Astrid (2025): A validation data set of phytoplankton pigment concentrations and phytoplankton groups measured on water samples collected from various expeditions [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.982433 (DOI registration in progress)
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Published: 2025-05-20
Abstract:
This data set composes quality controlled in situ measurements of eight major pigments based on HPLC collected from various expeditions from 2016 to 2023. There are two subsets: subset 1 is the test dataset (99 matchups) extracted from and takes up 30 % of a global in situ PFT matchup data set, while the other 70 % was used for the retuning of the PFT algorithm for Sentinel 3 OLCI sensors. Subset 1 spans from 2016 to 2021 and is part of the global data set described in Xi et al. (2023): https://doi.pangaea.de/10.1594/PANGAEA.954738. Subset 2 containing 134 matchups is a newly compiled dataset that composites in situ PFT data collected from four recent mostly polar expeditions with the research vessel Polarstern (Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, 2017), that are PS126 (May–June 2021), PS131/1 (June–Aug 2022) and PS136 (May–June 2023) in the north Atlantic to the Arctic Ocean, and PS133 (Oct–Nov 2022) in the Southern Ocean. The in situ PFT data were derived from quality-controlled HPLC pigment concentrations using diagnostic pigment analysis (DPA) with updated pigment-specific weighting coefficients following Xi et al. (2023). This published data set has been used to validate satellite PFT products generated for the EU funded Copernicus Marine Service (CMEMS, https://marine.copernicus.eu/), which are derived from multi-sensor ocean color reflectance data and sea surface temperature using an empirical orthogonal function based approach (Xi et al. 2020; 2021).
Supplement to:
Xi, Hongyan; Bretagnon, Marine; Mehdipour, Ehsan; Demaria, Julien; Mangin, Antoine; Bracher, Astrid (in press): Consistent long-term observations of surface phytoplankton functional types from space. 9th Copernicus Ocean State Report. State of the Planet, https://doi.org/10.5194/sp-2024-15
Related to:
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung (2017): Polar Research and Supply Vessel POLARSTERN operated by the Alfred-Wegener-Institute. Journal of large-scale research facilities JLSRF, 3, A119, https://doi.org/10.17815/jlsrf-3-163
Xi, Hongyan; Peeken, Ilka; Gomes, Mara; Brotas, Vanda; Tilstone, Gavin H; Brewin, Robert J W; Dall'Olmo, Giorgio; Tracana, Andreia; Alvarado, Leonardo M A; Murawski, Sandra; Wiegmann, Sonja; Bracher, Astrid (2023): Phytoplankton pigment concentrations and phytoplankton groups measured on water samples collected from various expeditions in the Atlantic Ocean from 71°S to 84°N [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.954738
References:
Xi, Hongyan; Losa, Svetlana N; Mangin, Antoine; Garnesson, Philippe; Bretagnon, Marine; Demaria, Julien; Soppa, Mariana A; Hembise Fanton d'Andon, Odile; Bracher, Astrid (2021): Global chlorophyll a concentrations of phytoplankton functional types with detailed uncertainty assessment using multi-sensor ocean color and sea surface temperature satellite products. Journal of Geophysical Research: Oceans, 126(5), https://doi.org/10.1029/2020JC017127
Xi, Hongyan; Losa, Svetlana N; Mangin, Antoine; Soppa, Mariana A; Garnesson, Philippe; Demaria, Julien; Liu, Yangyang; Hembise Fanton d'Andon, Odile; Bracher, Astrid (2020): Global retrieval of phytoplankton functional types based on empirical orthogonal functions using CMEMS GlobColour merged products and further extension to OLCI data. Remote Sensing of Environment, 240, 111704, https://doi.org/10.1016/j.rse.2020.111704
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 268020496: TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms
Coverage:
Median Latitude: 34.870347 * Median Longitude: -14.938127 * South-bound Latitude: -69.126300 * West-bound Longitude: -155.885000 * North-bound Latitude: 81.089840 * East-bound Longitude: 171.979833
Date/Time Start: 2016-04-30T10:59:00 * Date/Time End: 2023-06-16T17:06:00
Minimum Elevation: -3719.1 m * Maximum Elevation: -31.1 m
Event(s):
33GG20191015_20191019 * Latitude: 38.215500 * Longitude: -73.644400 * Date/Time: 2019-10-19T00:00:00 * Campaign: 33GG20191015 (ECOMON, GU1905) * Basis: Gordon Gunter * Method/Device: Water sample (WS)
33HH20180625-track * Latitude Start: 41.278000 * Longitude Start: -70.598300 * Latitude End: 41.418900 * Longitude End: -71.374900 * Date/Time Start: 2018-06-25T19:19:26 * Date/Time End: 2018-07-11T10:13:11 * Campaign: 33HH20180625 * Basis: Henry B. Bigelow * Method/Device: Underway cruise track measurements (CT)
A22_2021_20210509 * Latitude: 34.740000 * Longitude: -66.580000 * Date/Time: 2021-05-09T00:00:00 * Campaign: A22_2021 * Basis: Thomas G. Thompson * Method/Device: Water sample (WS)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
4194 data points
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