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1. Dissolved inorganic nutrients from the Martha's Vineyard Coastal Observatory (MVCO), including 4 macro-nutrients from water column bottle samples, ongoing since 2003 (NES-LTER since 2017)

   https://doi.org/10.6073/PASTA/A5A26FE8DD8AC113641869FE1376DA4B  

   Sosik, Heidi M; Crockford, E Taylor; Peacock, Emily (January 2024, Environmental Data Initiative)

   Dissolved inorganic nutrients including nitrate + nitrite, ammonium, silicate, and phosphate are measured from water column bottle and bucket samples taken on NES-LTER day cruises in the vicinity of the Martha's Vineyard Coastal Observatory (MVCO). Sampling frequency near MVCO is approximately monthly, ongoing since 2003. Samples were filtered, frozen, then processed at the Woods Hole Oceanographic Institution's Nutrient Analytical Facility. These macro-nutrients are analyzed in seawater using a colorimetric assay in which light absorbance is measured versus known standards, and final concentrations are calculated (in micromole per liter). Each sample may have up to 3 replicates. 

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2. Dissolved inorganic nutrients from NES-LTER Transect cruises, including 4 macro-nutrients from water column bottle samples, ongoing since 2017

   https://doi.org/10.6073/pasta/abc6c4301cc3e0317e68ca118711f6821  

   Sosik, Heidi M; Crockford, E Taylor; Peacock, Emily; OOI_CGSN_Data_Team (January 2025, Environmental Data Initiative)

   Dissolved inorganic nutrients are measured from water column bottle samples taken on NES-LTER Transect cruises (ongoing since 2017) and include nitrate + nitrite, ammonium, silicate, and phosphate. Sampling frequency is approximately seasonal. Samples were filtered, frozen, then processed at the Woods Hole Oceanographic Institution's Nutrient Analytical Facility. Each sample may have up to 2 replicates, indicated by a or b in the data table. These macro-nutrients are analyzed in seawater using a colorimetric assay in which light absorbance is measured versus known standards, and final concentrations are calculated in micromole per liter. Some of the data are from cruises in collaboration with the Ocean Observatories Initiative (OOI). 

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3. Size-fractionated chlorophyll from the Martha’s Vineyard Coastal Observatory (MVCO), ongoing since 2003 (NES-LTER since 2017)

   https://doi.org/10.6073/PASTA/29ECB409988F09597EE268D6926E1CD9  

   Sosik, Heidi M; Crockford, E Taylor; Peacock, Emily (January 2022, Environmental Data Initiative)

   Size-fractionated chlorophyll a and phaeopigments are measured from water column bottle and bucket samples taken on Northeast U.S. Shelf Long-Term Ecological Research (NES-LTER) day cruises in the vicinity of the Martha's Vineyard Coastal Observatory (MVCO), as a proxy for phytoplankton biomass. Sampling frequency near MVCO is approximately monthly, ongoing since 2003. Size fractions in addition to whole seawater (>0.7 micron) include <10 and <80 microns. Pigments were analyzed using fluorometers in which fluorescence was measured versus a blank and a standard, and final concentrations were calculated in micrograms per liter (or mg per cubic meter). 

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4. Dissolved inorganic nutrients from NES-LTER Transect cruises, including 4 macro-nutrients from water column bottle samples, ongoing since 2017

   https://doi.org/10.6073/PASTA/EC6E5C76C7AD4E0DA0A8D1CEC84FA3F5  

   Sosik, Heidi M; Crockford, E Taylor; Peacock, Emily (January 2021, Environmental Data Initiative)

   Dissolved inorganic nutrients are measured from water column bottle samples taken on NES-LTER Transect cruises (ongoing since 2017) and include nitrate + nitrite, ammonium, silicate, and phosphate. Sampling frequency is approximately seasonal. Samples were filtered, frozen, then processed at the Woods Hole Oceanographic Institution’s Nutrient Analytical Facility. Each sample may have up to 2 replicates, indicated by a or b in the data table. These macro-nutrients are analyzed in seawater using a colorimetric assay in which light absorbance is measured versus known standards, and final concentrations are calculated in micromole per liter. 

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5. Event logs from Northeast U.S. Shelf Long Term Ecological Research (NES-LTER) cruises to the Martha's Vineyard Coastal Observatory (MVCO) ongoing since 2017

   https://doi.org/10.6073/pasta/efff67e138fe866c2e763e2ae68e2d34  

   Sosik, Heidi M; Crockford, E Taylor; Peacock, Emily; Llopiz, Joel K (January 2025, Environmental Data Initiative)

   This package provides a table of cruises to the Martha's Vineyard Coastal Observatory for Northeast U.S. Shelf Long-Term Ecological Research (NES-LTER). The majority of events are single day cruises, however, samples missing an MVCO Event Number were collected on multi-day NES-LTER transect cruises aboard larger research vessels. The same sampling protocols for CTD and bongo collection are used on both cruise types. Sampling frequency is approximately monthly, with NES-LTER sampling ongoing since 2017. Cruises involve collection of water column bottle samples, surface bucket samples, and zooplankton net tow samples, as well as ship-provided data. NES-LTER transect cruises will have more extensive underway and acoustic data which can be found by searching by cruise at https://www.rvdata.us/data. The event number for each cruise is provided, along with date, vessel name, cruise identifier where applicable, link to data location (for CTD, ADCP, and other underway data), and checklist of six data types. 

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