Dissolved nutrient, carbon and algal abundance in the Dark Zone (Greenland Ice Sheet), July-August 2016

Dissolved inorganic and organic nutrient concentrations, dissolved organic carbon concentrations and glacier algal cell abundance are quantified for supraglacial environments in the Dark Zone of the Greenland Ice Sheet during July and August 2016. Samples include surface ice with varying degrees of visible impurities, cryoconite hole water and supraglacial stream water. Surface ice samples are comprised of the top 2 cm of a 1x1 m ice surface area. Dissolved inorganic nitrogen (DIN), dissolved organic nitrogen (DON), dissolved inorganic phosphorus (DIP), dissolved organic phosphorus (DOP) and dissolved organic carbon (DOC) were quantified for all ice surface, supraglacial stream and cryoconite hole water samples collected. Glacier algae abundance was quantified for ice surface samples. Field blank corrections were conducted for all DIN, DON, DIP, DOP and DOC data. Any values resulting below the instrument limit of detection were considered to be 0.

Funding was provided by the NERC ''Black and Bloom'' grant NE/M021025/1 and the Marie Sklodowska-Curie grant agreement No 675546.

Alternate title: Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01215

Date (Publication): 2019-08-05

Citation identifier: http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01215

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey		pdc@bas.ac.uk	Custodian
UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation	Holland, A., Williamson, C., Tranter, M., & Anesio, A.	pdc@bas.ac.uk	Originator

Maintenance and update frequency: Unknown

Keywords

NDGO0001

NERC OAI Harvesting

NERC_DDC

GCMD Parameter Valids

EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Ice Sheets
EARTH SCIENCE > Cryosphere > Snow/Ice > Snow/Ice Chemistry
EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry > Nutrients

BAS Free-text keywords

Dissolved nutrients
Dissolved organic carbon
Glacier algae
Greenland Ice Sheet
Supraglacial environments

Use limitation: This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.

Access constraints: Other restrictions

Other constraints: This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.

Language: English

Topic category

Climatology, meteorology, atmosphere
Environment

Begin date: 2016-07-01

End date: 2016-08-31

Reference system identifier: OGP / urn:ogc:def:crs:EPSG::4326

Distribution format

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Polar Data Centre - British Antarctic Survey		pdc@bas.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
http		GET DATA

Hierarchy level: Dataset

Domain consistency

Measure identification: INSPIRE / Conformity_001

Conformance result

Title: INSPIRE Data Specification on unknown theme Guidelines

Date

Explanation: See the referenced specification

Pass: No

Statement: The LoD (limit of detection) for dissolved organic carbon (DOC) was 9.5 µM. Precision was ±2.4% and accuracy was -5.9%. LoD were 0.14 µM for nitrite (NO2-), 0.64 µM for total oxidized nitrogen (TON) and 0.87 µM for total dissolved nitrogen/dissolved organic nitrogen (TDN/DON). Precision was ±0.87% (NO2-), ±1.17% (NO3-) and ±0.63% (TDN/DON), and accuracy was - 4.04% (NO2-), -8.07% (NO3-) and -5.7% (TDN/DON). The LoD was 0.02 µM for phosphate and total dissolved phosphorus/dissolved organic phosphorus (PO43- and TDP/DOP). Precision was ±1.6% (PO43-) and ±3.1% (TDP/DOP), and accuracy was +2.3% (PO43-) and +5.0% (TDP/DOP). All measurements below the LoD were considered to be 0 for all statistical analyses. All dissolved inorganic nitrogen (DIN), DON, dissolved inorganic phosphorus (DIP), DOP and DOC data were water blank-corrected using values from the respective field procedural blanks. Additionally, all blank corrected values that were negative were assumed to be 0 for all statistical analyses.