http://lod.bco-dmo.org/id/dataset/1008949
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2026-10-05
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Environmental, bulk and nutrient data from the National Geographic Endurance in the West Antarctic Peninsula in February 2025
2026-10-16
publication
2026-10-16
revision
Woods Hole Oceanographic Institution (WHOI BCO-DMO)
2026-10-16
publication
https://doi.org/10.26008/1912/bco-dmo.1008949.1
Patricia M. Medeiros
University of Georgia
principalInvestigator
Renato Castelao
University of Georgia
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Medeiros, P. M., Castelao, R. (2026) Environmental, bulk and nutrient data from the National Geographic Endurance in the West Antarctic Peninsula in February 2025. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2026-10-16 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.1008949.1 [access date]
Environmental, bulk, and nutrient data Dataset Description: <p>Sample collection conducted as part of the National Geographic-Lindblad Expeditions Visiting Scientist Program.</p> Methods and Sampling: <p>Surface water samples (upper 1 m) were collected using pre-cleaned 2 L polycarbonate (PC) Nalgene bottles aboard a Zodiac boat. All samples were filtered through 0.7 μm Whatman GF/F filters followed by 0.2 μm Pall Supor membrane filters. Aliquots were collected for dissolved organic carbon (DOC) and nutrient analyses and stored at −20°C and 4°C, respectively. Filtrates were acidified to pH 2 with concentrated HCl, and dissolved organic matter (DOM) was isolated using solid-phase extraction (SPE) cartridges (Agilent Bond Elut PPL) and subsequently eluted with methanol. Extracts were stored frozen at −20°C until analysis.</p>
<p>Temperature and salinity were measured at the time of sample collection using a Sper Scientific temperature/salinity (T/S) sensor.</p>
Funding provided by NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) Award Number: OPP-2512432 Award URL: https://www.nsf.gov/awardsearch/show-award/?AWD_ID=2512432
completed
Patricia M. Medeiros
University of Georgia
706-542-6744
Department of Marine Sciences
Athens
GA
30602-3636
USA
medeiros@uga.edu
pointOfContact
Renato Castelao
University of Georgia
706-542-2422
Department of Marine Sciences #252 Marine Sciences Bldg
Athens
GA
30602-3636
USA
castelao@uga.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
WAP_Sites
Date
Time
Longitude
Latitude
Temperature
Salinity
DOC
TDN
NH4
Nox
NO2
NO3
DIN
DON
PO4
TDP
DOP
ISO_DateTime_UTC
Alpkem Two-Channel Autoanalyzer
Sper Scientific T/S Sensor
Shimadzu TOC-VCPH analyzer
theme
None, User defined
site
date
time_local
longitude
latitude
water temperature at measurement depth
salinity
dissolved organic Carbon
Total Dissolved Nitrogen
Ammonium
nitrate plus nitrite
Nitrite
Nitrate
Dissolved Inorganic Nitrogen
Dissolved Organic Nitrogen
reactive phosphorus (PO4)
Total Dissolved Phosphorus
Dissolved Organic Phosphorus
featureType
BCO-DMO Standard Parameters
Continuous Flow Analyzer
Multi Parameter Portable Meter
Shimadzu Total Organic Carbon Analyzer TOC-VCPH
instrument
BCO-DMO Standard Instruments
ANTA: Journey to Antarctica: The White Continent
service
Deployment Activity
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
RAPID: Impacts of Glacier Melting on Dissolved Organic Matter Dynamics in the West Antarctic Peninsula
https://osprey.bco-dmo.org/project/999485
RAPID: Impacts of Glacier Melting on Dissolved Organic Matter Dynamics in the West Antarctic Peninsula
<p>Glacier melting in polar regions can result in large amounts of freshwater being introduced into the coastal ocean, changing nutrient levels at the surface, impacting organisms like phytoplankton and influencing the distribution and composition of organic material in the water. In this project, researchers will participate in an expedition to the West Antarctic Peninsula in early 2025 that will approach several retreat glaciers, starting from the northern tip of the Peninsula and progressing toward its central region. The team will analyze physical, chemical, and biological changes in the area, and relate these changes to differences in melting trends that have been observed along the Peninsula. Results will help predict future impacts on the region due to increased melting associated with continued warming. The program will provide training for a graduate student and disseminate results of the study across a broad audience.</p>
<p>This project will examine the effects of meltwater input from tidewater glaciers on dissolved organic matter along the West Antarctic Peninsula. While glaciers near the northern tip of the Peninsula show no changes in grounding line discharge trends, several farther south, near Palmer Station, are characterized by significant changes, with discharge trends surging by a factor of 3 in many glaciers. This suggests a north-south gradient in the response of discharge rates to environmental forcing along the Peninsula, likely influencing the vertical flux of nutrients and affecting phytoplankton and the composition and lability of dissolved organic matter. The PIs will take advantage of a cruise-of-opportunity to the West Antarctic Peninsula in February 2025 to collect samples in transects approaching multiple tidewater glaciers, capturing the north-south gradient in discharge trends reported for the region. Samples of seawater and floating ice from glaciers will be analyzed for temperature, salinity, nutrients, chlorophyll, particulate and dissolved organic carbon concentrations and lability, and dissolved organic matter composition using ultrahigh-resolution mass spectrometry, optics and isotopic analyses. Variations in organic matter composition and lability will be identified and compared along the north-south gradient in discharge trends, which will inform how the system might respond to future increases in glacier melting. Results will also be compared with similar analyses currently being conducted in the Amundsen Sea and the Kerguelen Islands, collectively capturing the influence of meltwater originating from large ice sheets, tidewater glaciers and land-terminating glaciers. The project will support a graduate student who will be trained in the analysis of dissolved organic matter data.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
DOM Dynamics in the WAP
largerWorkCitation
project
eng; USA
oceans
-67.1736
-62.5692
-68.3162
-64.682
2025-02-04
2025-02-08
0
BCO-DMO catalogue of parameters from Environmental, bulk and nutrient data from the National Geographic Endurance in the West Antarctic Peninsula in February 2025
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/1008958.rdf
Name: WAP_Sites
Units: unitless
Description: <p>Site name</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008959.rdf
Name: Date
Units: unitless
Description: <p>Date of collection in ISO format (yyyy-mm-dd)</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008960.rdf
Name: Time
Units: unitless
Description: <p>Argentina Standard Time (ISO Format: hh:mm)</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008961.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008963.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008965.rdf
Name: Temperature
Units: degrees Celsius (°C)
Description: <p>Temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008966.rdf
Name: Salinity
Units: PSU
Description: <p>Salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008967.rdf
Name: DOC
Units: micromolar (uM)
Description: <p>Dissolved organic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008968.rdf
Name: TDN
Units: micromolar (uM)
Description: <p>Total dissolved nitrogen</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008969.rdf
Name: NH4
Units: micromolar (uM)
Description: <p>Ammonium (bdl = below detection limit).</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008970.rdf
Name: Nox
Units: micromolar (uM)
Description: <p>Nitrite + Nitrate</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008971.rdf
Name: NO2
Units: micromolar (uM)
Description: <p>Nitrite (bdl = below detection limit).</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008972.rdf
Name: NO3
Units: micromolar (uM)
Description: <p>Nitrate</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008973.rdf
Name: DIN
Units: micromolar (uM)
Description: <p>Dissolved inorganic nitrogen</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008974.rdf
Name: DON
Units: micromolar (uM)
Description: <p>Dissolved organic nitrogen</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008975.rdf
Name: PO4
Units: micromolar (uM)
Description: <p>Phosphate</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008976.rdf
Name: TDP
Units: micromolar (uM)
Description: <p>Total dissolved phosphorus</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008977.rdf
Name: DOP
Units: micromolar (uM)
Description: <p>Dissolved organic phosphorus (bdl = below detection limit).</p>
http://lod.bco-dmo.org/id/dataset-parameter/1008978.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Datetime of collection in UTC time and ISO format: yyyy-mm-dd:hh:mm</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
https://doi.org/10.26008/1912/bco-dmo.1008949.1
download
onLine
dataset
<p>Surface water samples (upper 1 m) were collected using pre-cleaned 2 L polycarbonate (PC) Nalgene bottles aboard a Zodiac boat. All samples were filtered through 0.7 μm Whatman GF/F filters followed by 0.2 μm Pall Supor membrane filters. Aliquots were collected for dissolved organic carbon (DOC) and nutrient analyses and stored at −20°C and 4°C, respectively. Filtrates were acidified to pH 2 with concentrated HCl, and dissolved organic matter (DOM) was isolated using solid-phase extraction (SPE) cartridges (Agilent Bond Elut PPL) and subsequently eluted with methanol. Extracts were stored frozen at −20°C until analysis.</p>
<p>Temperature and salinity were measured at the time of sample collection using a Sper Scientific temperature/salinity (T/S) sensor.</p>
Specified by the Principal Investigator(s)
<p>DOC and total dissolved nitrogen (TDN) concentrations were measured using a Shimadzu TOC-VCPH analyzer. Potassium hydrogen phthalate was used as the calibration standard for DOC, and potassium nitrate was used for TDN calibration curves.</p>
<p>Ammonium (NH₄⁺) concentrations were determined using the indophenol colorimetric method. Nitrate (NO₃⁻; nitrate plus nitrite) and phosphate (PO₄³⁻) concentrations were measured using cadmium reduction followed by diazotization and the molybdate blue method, respectively, with an Alpkem two-channel autoanalyzer.</p>
Specified by the Principal Investigator(s)
This section documents curation actions performed prior to publication review with the submitter, and additional information relevant to understanding and reusing this dataset. It distinguishes changes made to the submitted (meta)data from unresolved issues and/or enhancements that improve future reuse and interoperability.
CURATION ACTIONS PERFORMED ON DATA
- Loaded WAP_2025_Environmental_Bulk analyses_BCO-DMO.xlsx.
- Cleaned excel file removing parameter unit row (added to parameters section) and reference to bdl.
- Converted combined Date and Time columns into a new ISO_DateTime_UTC datetime column, parsing input as America/Argentina/San_Juan local time and converting to UTC, formatted yyyy-mm-ddThh:mm
- Replaced "bdl*" values in NH4 column with "bdl" and treated as missing value
- Renamed resource wap_2025_environmental_bulk_analyses_bco-dmo-1 to 1008949_v1_dom_composition
- Renamed column "WAP Sites" to "WAP_Sites"
- Saved as final tables: 1008949_v1_dom_composition.csv
CURATION ACTIONS PERFORMED ON METADATA
- Standard metadata entry and text formatting steps were performed.
ISSUES POTENTIALLY IMPACTING REUSE
- NA
Specified by BCO-DMO Data Managers
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Alpkem Two-Channel Autoanalyzer
Alpkem Two-Channel Autoanalyzer
PI Supplied Instrument Name: Alpkem Two-Channel Autoanalyzer PI Supplied Instrument Description:Concentrations were measured using cadmium reduction followed by diazotization and the molybdate blue method, respectively, with an Alpkem two-channel autoanalyzer. Instrument Name: Continuous Flow Analyzer Instrument Short Name:CFA Instrument Description: A sample is injected into a flowing carrier solution passing rapidly through small-bore tubing.
Sper Scientific T/S Sensor
Sper Scientific T/S Sensor
PI Supplied Instrument Name: Sper Scientific T/S Sensor Instrument Name: Multi Parameter Portable Meter Instrument Short Name: Instrument Description: An analytical instrument that can measure multiple parameters, such as pH, EC, TDS, DO and temperature with one device and is portable or hand-held.
Shimadzu TOC-VCPH analyzer
Shimadzu TOC-VCPH analyzer
PI Supplied Instrument Name: Shimadzu TOC-VCPH analyzer PI Supplied Instrument Description:Potassium hydrogen phthalate was used as the calibration standard for DOC, and potassium nitrate was used for TDN calibration curves. Instrument Name: Shimadzu Total Organic Carbon Analyzer TOC-VCPH Instrument Short Name:TOC-VCPH Instrument Description: The Shimadzu Total Organic Carbon Analyzer TOC-VCPH is a PC-controlled, total organic carbon analyzer (high-sensitivity model), designed to measure total carbon (TC), inorganic carbon (IC), total organic carbon (TOC), and non-purgeable organic carbon (NPOC); an optional accessory enables the measurement of particulate organic carbon (POC) and total nitrogen (TN) as well. The instrument uses the 680 degrees Celsius combustion catalytic oxidation method to analyze aqueous samples, and optionally solid and gas samples.
Cruise: ANTA: Journey to Antarctica: The White Continent
ANTA: Journey to Antarctica: The White Continent
National Geographic Endurance
Community Standard Description
International Council for the Exploration of the Sea
National Geographic Endurance
vessel
National Geographic Endurance
Community Standard Description
International Council for the Exploration of the Sea
National Geographic Endurance
vessel