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https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_963736_v1 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_963736_v1.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_963736_v1/ public [Carbonate chemistry for OAE North Atlantic experiments] - Carbonate chemistry data for shipboard ocean alkalinity enhancement (OAE) experiments in the North Atlantic on R/V Atlantic Explorer cruise AE2320 in September 2023 (OCE-PRF:  Towards Quantifying Calcium Carbonate Sediment Dissolution During Marine Diagenesis) To explore mineral formation due to alkalinity addition, we present results from shipboard experiments in which an aqueous solution of NaOH was added to unfiltered seawater collected from the surface ocean in the Sargasso Sea. Alkalinity addition ranged from 500 to 2000 micromoles per kilogram (µmol.kg-1) and the carbonate chemistry was monitored through time by measuring total alkalinity (TA) and dissolved inorganic carbon (DIC), which were used to calculate Ω. The amount of precipitate and its minerology were determined throughout the experiments. Mineral precipitation took place in all experiments over a timescale of hours to days. The dominant mineralogy of precipitate is aragonite with trace amounts of calcite and brucite. Aragonite crystallite size increases and its micro-strain decreases with time, consistent with Ostwald ripening. This dataset contains carbonate chemistry data that include TA and DIC measurements, precipitation rates from the shipboard experiments, and precipitation rates calculated in the same way (by changes in alkalinity through time) for the study of Moras et al. (2022) and precipitation rate data from Mucci et al. (1989).\n\ncdm_data_type = Other\nVARIABLES:\nExperiment_name (unitless)\nTA_addition (micromoles (umol))\nStart_day (unitless)\nStart_time (unitless)\nEnd_day (unitless)\nEnd_time (unitless)\nDuration (hours (h))\nmeasured_TA (micromoles per kilogram (umol/kg))\nTA_std (micromoles per kilogram (umol/kg))\nmeasured_DIC (micromoles per kilogram (umol/kg))\nDIC_std (micromoles per kilogram (umol/kg))\ncalculated_DIC (micromoles per kilogram (umol/kg))\ncalculated_CaCO3_precipitate (milligrams per kilogram (mg/kg))\n https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_963736_v1/index.htmlTable https://osprey.bco-dmo.org/dataset/963736 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_963736_v1.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_963736_v1&showErrors=false&email= BCO-DMO bcodmo_dataset_963736_v1
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_986789_v1 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_986789_v1.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_986789_v1/ public [HATS Total Aerosols] - Weekly integrated bulk total aerosol trace element concentrations from the Hawaii Aerosol Time-series during January 2022 to October 2023 (Hawaii Aerosol Time-Series (HATS):Quantifying Marine Dust Deposition and Composition in an Oligotrophic Gyre) This study aimed to quantify seasonal aerosol trace element fluxes and evaluate their variability and potential sources over a two-year period in the North Pacific subtropical gyre (NPSG). We established the Hawaii Aerosol Time Series (HATS), a sampling program at Makai Research Pier on O'ahu (21.32° N, 157.67° W), to collect weekly-integrated total suspended particle samples. Sampling was sector-controlled to collect when winds were onshore at a velocity of greater than 0.5 meters per second (m/s). The sampler was fitted with a GEOTRACES-style, custom-made manifold holding 12 acid-washed, 47-millimeter (mm) diameter Whatman-41 filters. Three filters were reserved for total digestion. The digestion procedure is a three-step process where the samples were sequentially acidified with concentrated double-distilled nitric acid, hydrofluoric acid, and hydrogen peroxide, heated to ~140 degrees Celsius (°C) on a hotplate overnight, and then taken to near dryness. Following the final dry-down, samples were brought up in 0.32 M optima HNO3 and then analyzed for a mix of primarily lithogenic and anthropogenically associated trace elements (including Al, Co, Cr, Cu, Fe, Mn, Ni, Pb, Ti, V, and Zn) via quadrupole inductively coupled plasma mass spectrometry (ICP-MS).\n\ncdm_data_type = Other\nVARIABLES:\nDeployment (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nJulian_Day (unitless)\ntime (Start_iso_datetime_utc, seconds since 1970-01-01T00:00:00Z)\nStart_Day (unitless)\nStart_Month (unitless)\nStart_Year (unitless)\nStart_Time_UTC (unitless)\nEnd_ISO_DateTime_UTC (seconds since 1970-01-01T00:00:00Z)\nEnd_Day (unitless)\nEnd_Month (unitless)\nEnd_Year (unitless)\nEnd_Time_UTC (unitless)\n... (34 more variables)\n https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_986789_v1_fgdc.xml https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_986789_v1_iso19115.xml https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_986789_v1/index.htmlTable https://osprey.bco-dmo.org/dataset/986789 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_986789_v1.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_986789_v1&showErrors=false&email= BCO-DMO bcodmo_dataset_986789_v1
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_674992.subset https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_674992 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_674992.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_674992/ public [McMurdo Sound icebreaker dates and ice edge distance] - Icebreaker dates and ice edge distance in McMurdo Sound, Antarctica from austral years 1956/1957 to 2014/2015 (McMurdo Predator Prey project) (Food web dynamics in an intact ecosystem: the role of top predators in McMurdo Sound) This dataset contains dates of icebreaker start and arrival at McMurdo Station\nin McMurdo Sound, Antarctica between austral years 1956/1957 and 2014/2015.\n\\u00a0It also includes the distance\\u00a0between the fast ice edge and McMurdo\nStation on the date of ship arrival at the fast ice edge.\n\ncdm_data_type = Other\nVARIABLES:\nlatitude (degrees_north)\nlongitude (degrees_east)\naustral_year (unitless)\nstart_year (unitless)\nstart_month (unitless)\nstart_day (unitless)\narrival_year (unitless)\narrival_month (unitless)\narrival_day (unitless)\nedge_distance (kilometers)\nships (unitless)\n https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_674992_fgdc.xml https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_674992/index.htmlTable https://www.bco-dmo.org/dataset/674992 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_674992.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_674992&showErrors=false&email= BCO-DMO bcodmo_dataset_674992

 
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