Attributes {
 s {
  cruise_id {
    String bcodmo_name "cruise_id";
    String description "Official cruise identifier.";
    String long_name "Cruise Id";
    String units "text";
  }
  year {
    Int16 _FillValue 32767;
    Int16 actual_range 2011, 2011;
    String bcodmo_name "year";
    String description "4-digit year of the cruise. in the format YYYY";
    String long_name "Year";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/";
    String units "unitless";
  }
  event {
    Int16 _FillValue 32767;
    Int16 actual_range 3001, 3282;
    String bcodmo_name "event";
    String description "Unique event number.";
    String long_name "Event";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/";
    String units "integer";
  }
  location {
    String bcodmo_name "Site_Desig";
    String description "Location descriptor (typically station ID).";
    String long_name "Location";
    String units "text";
  }
  event_description {
    String bcodmo_name "ev_type";
    String description "Description of sampling event. See 'Acquisition Description' for event code definitions.";
    String long_name "Event Description";
    String units "text";
  }
  GEO_sample_id_range {
    String bcodmo_name "sample";
    String description "Range of GEOTRACES ID numbers.";
    String long_name "GEO Sample Id Range";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P02/current/ACYC/";
    String units "text";
  }
  month_start {
    Byte _FillValue 127;
    Byte actual_range 11, 12;
    String bcodmo_name "month_start";
    String description "2-digit month at start of event (GMT).";
    String long_name "Month Start";
    String units "mm (01 to 12)";
  }
  day_start {
    String bcodmo_name "day_start";
    String description "2-digit day of the month at start of event (GMT).";
    String long_name "Day Start";
    String units "dd (01 to 31)";
  }
  time_start {
    String bcodmo_name "time_start";
    String description "Start time (GMT); 24-hour clock.";
    String long_name "Time Start";
    String units "HHMM";
  }
  month_end {
    Byte _FillValue 127;
    Byte actual_range 11, 12;
    String bcodmo_name "month_end";
    String description "2-digit month at end of event (GMT).";
    String long_name "Month End";
    String units "mm (01 to 12)";
  }
  day_end {
    String bcodmo_name "day_end";
    String description "2-digit day of the month at end of event (GMT).";
    String long_name "Day End";
    String units "dd (01 to 31)";
  }
  time_end {
    String bcodmo_name "time_end";
    String description "End time (GMT); 24-hour clock.";
    String long_name "Time End";
    String units "HHMM";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range 17.4, 40.18;
    String axis "Y";
    String bcodmo_name "latitude";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Latitude (South is negative).";
    String ioos_category "Location";
    String long_name "Latitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LATX/";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue NaN;
    Float64 actual_range -70.15, -24.5;
    String axis "X";
    String bcodmo_name "longitude";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Longitude (West is negative).";
    String ioos_category "Location";
    String long_name "Longitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LONX/";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 _FillValue NaN;
    Float64 actual_range 1.0, 3224.0;
    String axis "Z";
    String bcodmo_name "depth_min";
    String description "Minimum depth.";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  depth_max {
    Int16 _FillValue 32767;
    Int16 actual_range 1, 5845;
    String bcodmo_name "depth_max";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String description "Maximum depth.";
    String long_name "Depth";
    String standard_name "depth";
    String units "meters";
  }
  samples_taken {
    String bcodmo_name "sample_descrip";
    String description "Samples taken. See 'Acquisition Description' for sample code definitions.";
    String long_name "Samples Taken";
    String units "text";
  }
  comment {
    String bcodmo_name "comment";
    String description "Free-text comments about the event.";
    String long_name "Comment";
    String units "text";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson";
    String acquisition_description "Spreadsheet of events generated aboard vessel by the science party. The
following code lists were used.
 
Event Description Codes:  
 nd = unknown/not entered  
 GT-C = GEOTRACES carousel  
 30-ODF = 30L Niskin Rosette  
 Stn-GeoF = GeoFish Station sampling; misc samples  
 GeoF = GeoFish TM dissolved; Nuts; As  
 mid-GeoF = GeoFish TM diss/uf; Nuts; nanoNuts; As; Alk Phosphatase  
 Super-GeoF = GeoFishTM diss/uf; Nuts; NanoNuts; As; Alk Phos; Se; WML; A.
Shiller  
 RaPUW = Radium UW pump  
 MITv2 = MIT-vane  
 UAFv = UAF-vane  
 KnoR = Knorr rosette  
 MastUp = NASA solar reference mast UP  
 MastDown = NASA solar reference mast DOWN  
 McL-Ros = McLane pump rosette  
 McL-Prof = McLane pump profile  
 Aeros = Aerosol sampler  
 AOP = Apparent Optical Properties cast  
 NASAsurf = NASA surface pump water sample  
 NEMO = NEMO Float Deployment  
 Ra/Th/Pig = Ra/Th/Pigment Niskin Cast  
 Surf Ra bag = Surface Ra bag  
 Rain = Rain sample
 
Sample Codes:  
 nd = unknown/not recorded  
 diss = dissolved samples  
 diss+part = dissolved and particulate samples  
 unfilt = unfiltered seawater  
 filter = filter for particulates  
 none = none";
    String awards_0_award_nid "54753";
    String awards_0_award_number "OCE-0926423";
    String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0926423";
    String awards_0_funder_name "NSF Division of Ocean Sciences";
    String awards_0_funding_acronym "NSF OCE";
    String awards_0_funding_source_nid "355";
    String awards_0_program_manager "Donald L. Rice";
    String awards_0_program_manager_nid "51467";
    String awards_1_award_nid "54938";
    String awards_1_award_number "OCE-0926092";
    String awards_1_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0926092";
    String awards_1_funder_name "NSF Division of Ocean Sciences";
    String awards_1_funding_acronym "NSF OCE";
    String awards_1_funding_source_nid "355";
    String awards_1_program_manager "Donald L. Rice";
    String awards_1_program_manager_nid "51467";
    String awards_2_award_nid "55139";
    String awards_2_award_number "OCE-0926204";
    String awards_2_data_url "http://www.nsf.gov/awardsearch/showAward?AWD_ID=0926204&HistoricalAwards=false";
    String awards_2_funder_name "NSF Division of Ocean Sciences";
    String awards_2_funding_acronym "NSF OCE";
    String awards_2_funding_source_nid "355";
    String awards_2_program_manager "Donald L. Rice";
    String awards_2_program_manager_nid "51467";
    String cdm_data_type "Other";
    String comment "KN204-01 Scientific Sampling Event Log 
  2011 GEOTRACES cruise - 06 Nov to 11 Dec 
 Chief Sci: Ed Boyle (MIT); Co-Chief Sci: Greg Cutter (Old Dominion University) 
 Version: 25 Jan 2013 
 Note: Times are GMT; BCO-DMO corrections: 
  Corrected lat of event #3034 from 32.67 to 38.67; 
  Added station number to event #3112. 
  Changed sample number of event #3123 from 'nd' to 7245. 
  Corrected start and end dates of event #3203 from 12/01/11 to 12/02/11; 
  Changed end time of event #3217 from 0000 to nd; 
  Corrected station number of event #3219; 
  Corrected lon of event #3228 from -25.87 to -35.87.";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "info@bco-dmo.org";
    String creator_name "BCO-DMO";
    String creator_type "institution";
    String creator_url "https://www.bco-dmo.org/";
    String data_source "extract_data_as_tsv version 2.3  19 Dec 2019";
    String date_created "2013-01-07T17:34:13Z";
    String date_modified "2020-03-27T16:49:48Z";
    String defaultDataQuery "&time<now";
    String doi "10.26008/1912/bco-dmo.3842.1";
    Float64 Easternmost_Easting -24.5;
    Float64 geospatial_lat_max 40.18;
    Float64 geospatial_lat_min 17.4;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -24.5;
    Float64 geospatial_lon_min -70.15;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 3224.0;
    Float64 geospatial_vertical_min 1.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history "2024-05-02T00:35:59Z (local files)
2024-05-02T00:35:59Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_3842.das";
    String infoUrl "https://www.bco-dmo.org/dataset/3842";
    String institution "BCO-DMO";
    String keywords "bco, bco-dmo, biological, chemical, comment, cruise, cruise_id, data, dataset, day, day_end, day_start, depth, depth_max, depth_min, description, dmo, end, erddap, event, event_description, geo, GEO_sample_id_range, latitude, longitude, management, month, month_end, month_start, oceanography, office, preliminary, range, sample, samples, samples_taken, start, taken, time, time_end, time_start, year";
    String license "https://www.bco-dmo.org/dataset/3842/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/3842";
    Float64 Northernmost_Northing 40.18;
    String param_mapping "{'3842': {'lat': 'master - latitude', 'lon': 'master - longitude', 'depth_min': 'flag - depth'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/3842/parameters";
    String people_0_affiliation "Massachusetts Institute of Technology";
    String people_0_affiliation_acronym "MIT-EAPS";
    String people_0_person_name "Edward A. Boyle";
    String people_0_person_nid "50984";
    String people_0_role "Chief Scientist";
    String people_0_role_type "originator";
    String people_1_affiliation "Old Dominion University";
    String people_1_affiliation_acronym "ODU";
    String people_1_person_name "Gregory Cutter";
    String people_1_person_nid "50679";
    String people_1_role "Co-Chief Scientist";
    String people_1_role_type "originator";
    String people_2_affiliation "Woods Hole Oceanographic Institution";
    String people_2_affiliation_acronym "WHOI BCO-DMO";
    String people_2_person_name "Shannon Rauch";
    String people_2_person_nid "51498";
    String people_2_role "BCO-DMO Data Manager";
    String people_2_role_type "related";
    String project "U.S. GEOTRACES NAT";
    String projects_0_acronym "U.S. GEOTRACES NAT";
    String projects_0_description "Much of this text appeared in an article published in OCB News, October 2008, by the OCB Project Office.
The first U.S. GEOTRACES Atlantic Section will be specifically centered around a sampling cruise to be carried out in the North Atlantic in 2010. Ed Boyle (MIT) and Bill Jenkins (WHOI) organized a three-day planning workshop that was held September 22-24, 2008 at the Woods Hole Oceanographic Institution. The main goal of the workshop, sponsored by the National Science Foundation and the U.S. GEOTRACES Scientific Steering Committee, was to design the implementation plan for the first U.S. GEOTRACES Atlantic Section. The primary cruise design motivation was to improve knowledge of the sources, sinks and internal cycling of Trace Elements and their Isotopes (TEIs) by studying their distributions along a section in the North Atlantic (Figure 1). The North Atlantic has the full suite of processes that affect TEIs, including strong meridional advection, boundary scavenging and source effects, aeolian deposition, and the salty Mediterranean Outflow. The North Atlantic is particularly important as it lies at the \"origin\" of the global Meridional Overturning Circulation.
It is well understood that many trace metals play important roles in biogeochemical processes and the carbon cycle, yet very little is known about their large-scale distributions and the regional scale processes that affect them. Recent advances in sampling and analytical techniques, along with advances in our understanding of their roles in enzymatic and catalytic processes in the open ocean provide a natural opportunity to make substantial advances in our understanding of these important elements. Moreover, we are motivated by the prospect of global change and the need to understand the present and future workings of the ocean's biogeochemistry. The GEOTRACES strategy is to measure a broad suite of TEIs to constrain the critical biogeochemical processes that influence their distributions. In addition to these \"exotic\" substances, more traditional properties, including macronutrients (at micromolar and nanomolar levels), CTD, bio-optical parameters, and carbon system characteristics will be measured. The cruise starts at Line W, a repeat hydrographic section southeast of Cape Cod, extends to Bermuda and subsequently through the North Atlantic oligotrophic subtropical gyre, then transects into the African coast in the northern limb of the coastal upwelling region. From there, the cruise goes northward into the Mediterranean outflow. The station locations shown on the map are for the \"fulldepth TEI\" stations, and constitute approximately half of the stations to be ultimately occupied.
Figure 1. The proposed 2010 Atlantic GEOTRACES cruise track plotted on dissolved oxygen at 400 m depth. Data from the World Ocean Atlas (Levitus et al., 2005) were plotted using Ocean Data View (courtesy Reiner Schlitzer). [click on the image to view a larger version]
Hydrography, CTD and nutrient measurements will be supported by the Ocean Data Facility (J. Swift) at Scripps Institution of Oceanography and funded through NSF Facilities. They will be providing an additional CTD rosette system along with nephelometer and LADCP. A trace metal clean Go-Flo Rosette and winch will be provided by the group at Old Dominion University (G. Cutter) along with a towed underway pumping system.
The North Atlantic Transect cruise began in 2010 with KN199 leg 4 (station sampling) and leg 5 (underway sampling only) (Figure 2).
KN199-04 Cruise Report (PDF)
Figure 2. The red line shows the cruise track for the first leg of the US Geotraces North Atlantic Transect on the R/V Knorr in October 2010.  The rest of the stations (beginning with 13) will be completed in October-December 2011 on the R/V Knorr (courtesy of Bill Jenkins, Chief Scientist, GNAT first leg). [click on the image to view a larger version]
The section completion effort resumed again in November 2011 with KN204-01A,B (Figure 3).
KN204-01A,B Cruise Report (PDF)
Figure 3. Station locations occupied on the US Geotraces North Atlantic Transect on the R/V Knorr in November 2011.  [click on the image to view a larger version]
Data from the North Atlantic Transect cruises are available under the Datasets heading below, and consensus values for the SAFe and North Atlantic GEOTRACES Reference Seawater Samples are available from the GEOTRACES Program Office: Standards and Reference Materials
ADCP data are available from the Currents ADCP group at the University of Hawaii at the links below:KN199-04   (leg 1 of 2010 cruise; Lisbon to Cape Verde)KN199-05   (leg 2 of 2010 cruise; Cape Verde to Charleston, NC)KN204-01A (part 1 of 2011 cruise; Woods Hole, MA to Bermuda)KN204-01B (part 2 of 2011 cruise; Bermuda to Cape Verde)";
    String projects_0_end_date "2013-08";
    String projects_0_geolocation "Subtropical western and eastern North Atlantic Ocean";
    String projects_0_name "U.S. GEOTRACES North Atlantic Transect";
    String projects_0_project_nid "2066";
    String projects_0_project_website "http://www.geotraces.org/";
    String projects_0_start_date "2010-10";
    String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
    String publisher_type "institution";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 17.4;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String subsetVariables "cruise_id,year";
    String summary "Scientific sampling event log from R/V Knorr cruise KN204-01 in the Subtropical northern Atlantic Ocean in 2011 (U.S. GEOTRACES NAT project).";
    String title "Scientific sampling event log from R/V Knorr cruise KN204-01 in the Subtropical northern Atlantic Ocean in 2011 (U.S. GEOTRACES NAT project)";
    String version "1";
    Float64 Westernmost_Easting -70.15;
    String xml_source "osprey2erddap.update_xml() v1.3";
  }
}