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Suessle, Philipp; Taucher, Jan; Goldenberg, Silvan Urs; Baumann, Moritz; Noche-Ferreira, Andrea; Vanharanta, Mari (2024): KOSMOS 2021 Gran Canaria mesocosm study on ocean alkalinity enhancement: particles and weighted sinking velocities [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.967539 (DOI registration in progress), In: Suessle, P et al. (2024): KOSMOS 2021 Gran Canaria mesocosm study on ocean alkalinity enhancement: sediment trap particle flux data and water column biogeochemistry [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.967359

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Abstract:
The data presented herein originates from a mesocosm study conducted as part of the EU H2020 OceanNETs project, aimed at investigating the ecological ramifications of ocean alkalinity enhancement. Nine mesocosms were deployed in Taliarte Harbour, Gran Canaria, Spain, and systematically sampled using integrated water samplers over the period spanning from September 10th to October 25th, 2021. Alkalinity was employed in a gradient design, ranging from ambient (0 µeq kg-1 added alkalinity, OAE0) to elevated levels of 2400 µeq kg-1 additional alkalinity (OAE2400) in increments of 300 µeq kg-1. The dataset encompasses a spectrum of sediment trap particle flux data, water column biogeochemistry variables, including inorganic nutrients, carbonate chemistry parameters, and particulate matter, alongside chlorophyll a concentrations. The study and data set offer insights into impacts of alkalinity enhancement on marine ecosystems and their associated biogeochemistry.
Keyword(s):
ocean alkalinity enhancement
Project(s):
Ocean-based Negative Emission Technologies (OceanNETs)
Funding:
Horizon 2020 (H2020), grant/award no. 869357: OceanNETs: Ocean-based Negative Emission Technologies
Coverage:
Latitude: 27.990000 * Longitude: -15.368888
Date/Time Start: 2021-09-13T00:00:00 * Date/Time End: 2021-10-13T00:00:00
Event(s):
KOSMOS_2021_Mesocosm-M1  * Latitude: 27.990000 * Longitude: -15.368888 * Date/Time Start: 2021-09-11T00:00:00 * Date/Time End: 2021-10-25T00:00:00 * Location: Canarias Sea * Campaign: KOSMOS_2021 (KOSMOS Gran Canaria) * Method/Device: Mesocosm experiment (MESO)
KOSMOS_2021_Mesocosm-M2  * Latitude: 27.990000 * Longitude: -15.368888 * Date/Time Start: 2021-09-11T00:00:00 * Date/Time End: 2021-10-25T00:00:00 * Location: Canarias Sea * Campaign: KOSMOS_2021 (KOSMOS Gran Canaria) * Method/Device: Mesocosm experiment (MESO)
KOSMOS_2021_Mesocosm-M3  * Latitude: 27.990000 * Longitude: -15.368888 * Date/Time Start: 2021-09-11T00:00:00 * Date/Time End: 2021-10-25T00:00:00 * Location: Canarias Sea * Campaign: KOSMOS_2021 (KOSMOS Gran Canaria) * Method/Device: Mesocosm experiment (MESO)
Comment:
It contains all the mentioned (SV, ESD, Porosity) parameters, however "wheighing" was achieved differently: a threshold of 0.2 was applied, meaning that 20% of the cumulative particles volume lies below the given SV; for the achieved wheighind see particle_volume_threshhold.pdf
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Type of studyStudy typeSuessle, Philipp
2 Event labelEventSuessle, Philipp
3 DATE/TIMEDate/TimeSuessle, PhilippGeocode
4 Day of experimentDOEdaySuessle, Philipp
5 Mesocosm labelMeso labelSuessle, Philipp
6 ParticlesParticles#Suessle, Philippoverall number of capture particles for each mesocosm and day
7 Sinking velocitySinking Vm/daySuessle, Philippweighted
8 Equivalent spherical diameterESDµmSuessle, Philippweighted
9 PorosityPoros%Suessle, Philippweighted
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
987 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Study type		2 
Event		3 
Date/Time		4 
DOE [day]		5 
Meso label		6 
Particles [#]		7 
Sinking V [m/day]		8 
ESD [µm]		9 
Poros [%]
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Mesocosm experimentKOSMOS_2021_Mesocosm-M1 2021-09-133M120216.00766742100.784200008.604617116
Mesocosm experimentKOSMOS_2021_Mesocosm-M7 2021-09-133M711310.9849868794.371956528.585695324
Mesocosm experimentKOSMOS_2021_Mesocosm-M4 2021-09-133M429725.49160223268.6203571019.252488820
Mesocosm experimentKOSMOS_2021_Mesocosm-M9 2021-09-133M97714.58719027111.860100009.385889732
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Mesocosm experimentKOSMOS_2021_Mesocosm-M6 2021-09-133M618933.22002418220.8372727016.815718620
Mesocosm experimentKOSMOS_2021_Mesocosm-M2 2021-09-133M210421.67805600299.8900000029.787865400
Mesocosm experimentKOSMOS_2021_Mesocosm-M8 2021-09-133M821930.61278050260.5489286016.159193890
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Mesocosm experimentKOSMOS_2021_Mesocosm-M32021-10-1333M373370.57889649314.5006977014.068332190
Mesocosm experimentKOSMOS_2021_Mesocosm-M62021-10-1333M654651.74866262417.9833333017.952121800
Mesocosm experimentKOSMOS_2021_Mesocosm-M22021-10-1333M255857.36592357353.6520000019.401759850
Mesocosm experimentKOSMOS_2021_Mesocosm-M82021-10-1333M8649108.37981660197.5325000010.999428080