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.
Simple
- Alternate title
- Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01215
- Date (Publication)
- 2019-08-05
- Identifier
- http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01215
- Maintenance and update frequency
- unknown 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
- otherRestrictions 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/.
- Metadata language
- EnglishEnglish
- 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
-
- Hierarchy level
- dataset Dataset
Domain consistency
- Measure identification
- INSPIRE / Conformity_001
Conformance result
- 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.
- File identifier
- GB_NERC_BAS_PDC_01215 XML
- Metadata language
- EnglishEnglish
- Hierarchy level
- dataset Dataset
- Date stamp
- 2019-08-05
- Metadata standard name
- NERC profile of ISO19115:2003
- Metadata standard version
- 1.0