nodc_0000833_fgdc_eprex eng; USA utf8 dataset Mr. Patrick C. Caldwell NOAA/NESDIS/NODC/NCDDC Hawaii/US Pacific Liaison (808)-956-4105 (808) 956-2352 1000 Pope Road, MSB 316 Dept. of Oceanography University of Hawaii at Manoa Honolulu Hawaii 96822 USA caldwell@hawaii.edu 8 AM to 5 PM weekdays check services@nodc.noaa.gov if not available pointOfContact 2021-01-06 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) CTD and Water Chemistry data of the Eastern Pacific Redox Experiment of May - June 2000 (NODC Accession 0000833) publication Dr. Frank Sansone, University of Hawaii originator Dr. Brian Popp, University of Hawaii originator unpublished material publisher None None The Eastern Pacific Redox Experiment (EPREX) took place 24 May to 28 June 2000 on the R/V Roger Revelle. The first station was at the Hawaii Ocean Time Series "station ALOHA", 60 miles north of Oahu, Hawaii. The remaining five stations were spread along roughly 15N from 150W to 98W, near the Mexican coast. In addition to CTD data, various water chemistry parameters were aquired over multiple casts at each station down to about 2000 meters. The goal of EPREX was to determine the relative importance of each mechanism of nitrous oxide production across a range of biogeochemical conditions. Dr. Frank Sansone Dr. Brian Popp Department of Oceanography School of Ocean Earth Science and Technology University of Hawaii at Manoa National Science Foundation Chemical Oceanography program completed NOAA/National Oceanographic Data Center NODC User Services Group Leader 301-713-3277 301-713-3302 SSMC3 Fourth Floor 1315 East West Highway Silver Spring Maryland 20910-3282 USA services@nodc.noaa.gov 8:00 a.m. to 4:00 p.m. Monday Through Friday Phone/FAX/e-mail pointOfContact asNeeded CoRIS_Metadata theme NCEI Geoportal Filter CTD water chemistry biogeochemical temperature Salinity ammonium oxygen nitrite nitrate nitrous oxide pH nutrients theme None Numeric Data Sets > Oceanography theme CoRIS Discovery Thesaurus EARTH SCIENCE > Oceans > Salinity/Density > Salinity EARTH SCIENCE > Oceans > Ocean Chemistry > pH EARTH SCIENCE > Oceans > Ocean Chemistry > Nitrate EARTH SCIENCE > Oceans > Ocean Chemistry > Nitrite EARTH SCIENCE > Oceans > Ocean Chemistry > Nutrients EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature theme CoRIS Theme Thesaurus Hawaii Eastern tropical Pacific Station ALOHA Mexico place None COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Hawaii (21N160W0000) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii > Hawaii (21N160W0000) place CoRIS Place Thesaurus MHI place CoRIS Region NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA and NODC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system. otherRestrictions Use Constraints: Dataset credit required otherRestrictions Access Constraints: None eng; USA environment oceans Native Dataset Environment: MS Excel (2000) -158.0 -98.0 15.0 22.7 2000-05-24T00:00:00 2000-06-28T00:00:00 NOAASupplemental: Entry_ID: Unknown Sensor_Name: SeaBird Electronics CTD Profiler Sensor_Name: Niskin bottles Sensor_Name: laboratory analysis Source_Name: R/v Roger Revelle Project_Campaign: Eastern Pacific Redox Experiment (EPREX) Originating_Center: University of Hawaii Storage_Medium: Excel, ASCII Online_size: 25.8 megabytes Resource Description: NODC Accession Number 0000833 Excel and csv Data Access Group, User Services Team NOAA/NESDIS/National Oceanographic Data Center 301-713-3277 301-713-3302 SSMC-3 Fourth Floor 1315 East West Highway Silver Spring MD 20910-3282 USA services@nodc.noaa.gov 8am-5pm, Monday through Friday distributor Prices vary depending on data set, output medium and ordering mechanism. A standard handling charge, with additional costs for special handling, may be added to the basic cost of the data. Ordering Instructions: Prepayment by check, money order or bank card is required. Orders may be placed via fax, email, regular mail, telephone or via the NNDC Online Store. https://www.ncei.noaa.gov/archive/accession/833 download dataset None see methodology The EPREX consisted of a transect cruise with six stations spanning a range of biogeochemical conditions. At each station we collected water samples at depths ranging from the surface to 2000 meters. Oxygen was measured using Winkler titration (Grasshoff et al., 1983); nitrite was measured using colorimetry (Grasshoff et al., 1983); ammonium was measured using the fluorescence method of Jones (1991); and N2O was measured by headspace equilibration in a gas tight syringe, followed by packed-column gas chromatography using an electron capture detctor (Cohen, 1977). Nutrient samples, including nitrate, nitrite, and ammonium were collected in acid-washed plastic bottles and frozen for later analysis. Additional water samples were collected in glass serum bottles, preserved with mercuric chloride and sealed with gas tight septa for stable isotopic analysis of N2O in the mass spectrometry laboratory at the University of Hawaii. Dr. Frank Sansone Department of Oceanography School of Ocean Earth Science and Technology University of Hawaii at Manoa professor 808-956-8370 MSB 523 1000 Pope Road Honolulu Hawaii 96822 USA sansone@hawaii.edu processor annually This metadata was automatically generated from the FGDC CSDGM standard (version FGDC-STD-001-1998) using the 2016-01-11 version of the FGDC RSE to ISO 19115-2 transform. Translated from FGDC 2025-03-24T17:42:43.29Z Last Metadata Review Date: 2009-01-05 Mr. Patrick C. Caldwell NOAA/NESDIS/NODC/NCDDC Hawaii/US Pacific Liaison (808)-956-4105 (808) 956-2352 1000 Pope Road, MSB 316 Dept. of Oceanography University of Hawaii at Manoa Honolulu Hawaii 96822 USA caldwell@hawaii.edu 8 AM to 5 PM weekdays check services@nodc.noaa.gov if not available pointOfContact