Akers, Pete D; Savarino, Joël; Caillon, Nicolas; Servettaz, Aymeric P M; Le Meur, Emmanuel; Magand, Olivier; Agosta, Cécile; Crockford, Peter; Kobayashi, Kanon; Hattori, Shohei; Curran, Mark; van Ommen, Tas D; Jong, Lenneke; Roberts, Jason L; Martins, Jean (2022): Spatial variability in sub-photic zone nitrate δ15N and surface mass balance across East Antarctica [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.941480
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Abstract:
Geographic information, surface mass balance (SMB) data, and sub-photic zone (>0.3 m) nitrate concentration and nitrogen isotopic composition (δ15NNO3) for 135 sites across East Antarctica. This database was used to examine and define the relationship between δ15NNO3 and SMB in Antarctica as part of the SCADI (Snow Core Accumulation from Delta-15N Isotopes) and EAIIST (East Antarctic International Ice Sheet Traverse) projects. Of these 135 sites, 92 are newly reported here while the other site data were previously published and are cited accordingly. Snow bearing nitrate was sampled from snow pits and firn/ice cores at different dates depending on the original scientific campaign, but predominately between 2010 and 2020, with the earliest sampling occurring in 2004. Nitrate was later extracted from the snow, concentrated, and analyzed for δ15NNO3. Surface mass balance data comes from a combination of previous ground-based observations (e.g., stakes, ice core data) and the output from Modèle Atmosphérique Régional version 3.6.4 with European Centre for Medium-Range Weather Forecasts “Interim” re-analysis data (ERA-interim) data, adjusted for observed model SMB biases. Elevation data were extracted from the Reference Elevation Model of Antarctica (REMA, https://doi.org/10.5194/tc-13-665-2019).
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Supplement to:
Akers, Pete D; Savarino, Joël; Caillon, Nicolas; Servettaz, Aymeric P M; Le Meur, Emmanuel; Magand, Olivier; Martins, Jean; Agosta, Cécile; Crockford, Peter; Kobayashi, Kanon; Hattori, Shohei; Curran, Mark; van Ommen, Tas D; Jong, Lenneke; Roberts, Jason L (2022): Sunlight-driven nitrate loss records Antarctic surface mass balance. Nature Communications, 13(1), 4274, https://doi.org/10.1038/s41467-022-31855-7
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Agosta, Cécile; Amory, Charles; Kittel, Christoph; Orsi, Anaïs; Favier, Vincent; Gallée, Hubert; van den Broeke, Michiel R; Lenaerts, Jan T M; van Wessem, Jan Melchior; van de Berg, Willem Jan; Fettweis, Xavier (2019): Estimation of the Antarctic surface mass balance using the regional climate model MAR (1979-2015) and identification of dominant processes. The Cryosphere, 13(1), 281-296, https://doi.org/10.5194/tc-13-281-2019
Akers, Pete D; Savarino, Joël; Caillon, Nicolas; Magand, Olivier; Le Meur, Emmanuel (2022): Nitrate isotopic data from snow collected along the CHICTABA traverse, East Antarctica, 2013-2014. PANGAEA, https://doi.org/10.1594/PANGAEA.948355
Akers, Pete D; Savarino, Joël; Caillon, Nicolas; Servettaz, Aymeric P M; Le Meur, Emmanuel; Magand, Olivier; Agosta, Cécile; Crockford, Peter; Kobayashi, Kanon; Hattori, Shohei; Curran, Mark; van Ommen, Tas D; Jong, Lenneke; Roberts, Jason L; Martins, Jean (2022): Nitrate δ15N values and ice density-based surface mass balance from the ABN1314-103 ice core, Aurora Basin North, Antarctica. PANGAEA, https://doi.org/10.1594/PANGAEA.941491
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Shi, Guitao; Buffen, A M; Hastings, M G; Li, C; Ma, H; Li, Y; Sun, B; An, Chunlei; Jiang, Su (2015): Investigation of post-depositional processing of nitrate in East Antarctic snow: isotopic constraints on photolytic loss, re-oxidation, and source inputs. Atmospheric Chemistry and Physics, 15(16), 9435-9453, https://doi.org/10.5194/acp-15-9435-2015
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Verfaillie, D; Fily, Michel; Le Meur, Emmanuel; Magand, Olivier; Jourdain, Bruno; Arnaud, Laurent; Favier, Vincent (2012): Snow accumulation variability derived from radar and firn core data along a 600 km transect in Adelie Land, East Antarctic plateau. The Cryosphere, 6(6), 1345-1358, https://doi.org/10.5194/tc-6-1345-2012
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Funding:
BNP Paribas (France), grant/award no. 1117: BNP-Paribas Climate Initiative program 1117 (CAPOXI 35-75)
European Commission (EC), grant/award no. 889508: European Horizon Marie Skłodowska-Curie individual fellowship 889508
Coverage:
Median Latitude: -73.063481 * Median Longitude: 112.248815 * South-bound Latitude: -80.440000 * West-bound Longitude: 0.070000 * North-bound Latitude: -66.700000 * East-bound Longitude: 139.890000
Date/Time Start: 2013-11-30T00:00:00 * Date/Time End: 2013-12-25T00:00:00
Minimum ELEVATION: 114 m a.s.l. * Maximum ELEVATION: 4092 m a.s.l.
Event(s):
Ant_ABN-1314 (ABN1314-103 ice core) * Latitude: -71.170000 * Longitude: 111.370000 * Elevation: 2679.0 m * Location: East Antarctica * Campaign: CHICTABA (Chemical and physical analysis in snow/firn for accumulation studies in Adelie L) * Method/Device: Ice corer (IC) * Comment: This 103 m long core was drilled beginning on 07 January 2014 as one of three ice cores at Aurora Basin North, Antarctica in the 2013-2014 field season.
Ant_ABN-DL1 * Latitude: -71.170000 * Longitude: 111.370000 * Elevation: 2679.0 m * Location: East Antarctica * Campaign: CHICTABA (Chemical and physical analysis in snow/firn for accumulation studies in Adelie L) * Method/Device: Snow pits/firn core/ice core
Ant_ABN-DL2 * Latitude: -71.170000 * Longitude: 111.370000 * Elevation: 2679.0 m * Location: East Antarctica * Campaign: CHICTABA (Chemical and physical analysis in snow/firn for accumulation studies in Adelie L) * Method/Device: Snow pits/firn core/ice core
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Akers, Pete D | |||
| 2 | Site | Site | Akers, Pete D | |||
| 3 | Site | Site | Akers, Pete D | Alternative site name | ||
| 4 | LATITUDE | Latitude | Akers, Pete D | GPS in field | Geocode | |
| 5 | LONGITUDE | Longitude | Akers, Pete D | GPS in field | Geocode | |
| 6 | ELEVATION | Elevation | m a.s.l. | Akers, Pete D | Extracted from REMA | Geocode – Reference Elevation Model of Antarctica (REMA) |
| 7 | Surface mass balance | SMB | kg/m2/a | Akers, Pete D | Physical measurement and observations | Reported from ground-based observations |
| 8 | Surface mass balance | SMB | kg/m2/a | Akers, Pete D | MAR output | Output from the Modèle Atmosphérique Régional (MAR) version 3.6.4 with European Centre for Medium-Range Weather Forecasts “Interim” re-analysis data, 1979-2017 |
| 9 | Surface mass balance | SMB | kg/m2/a | Akers, Pete D | Bias-adjusted MAR output | As smb.mar.orig data adjusted for observed biases as described by Akers et al., 2022 |
| 10 | Surface mass balance | SMB | kg/m2/a | Akers, Pete D | As a best option combination of smb.ground where available and smb.mar.adj otherwise | |
| 11 | Type | Type | Akers, Pete D | Category of snow sampling methodology, as core (snow, firn, or ice core), pit (incrementally sampled snow pit), or dl (a ~5 cm thick layer at 1 m depth) | ||
| 12 | Campaign | Campaign | Akers, Pete D | Name of original scientific campaign that sampled the snow and nitrate | ||
| 13 | Transect | Transect | Akers, Pete D | Name of long-distance transect route on which site was sampled | ||
| 14 | Reference/source | Reference | Akers, Pete D | Citation of isotopic data | ||
| 15 | Reference/source | Reference | Akers, Pete D | Citation of surface mass balance data | ||
| 16 | Category | Cat | Akers, Pete D | Category of surface mass balance methodology, as stakes (repeatedly visited snow stakes), core (dated horizons in firn or ice core), or MAR (Modèle Atmosphérique Régional output) | ||
| 17 | Nitrate | [NO3]- | µg/kg | Akers, Pete D | Colorimetry and/or ion chromatography | Original concentration in ppb |
| 18 | δ15N | δ15N | ‰ air | Akers, Pete D | Mass spectrometer, Finnigan, MAT 253 | Isotopic ratio of nitrogen in archived nitrate, reported versus N2-Air standard |
| 19 | Comment | Comment | Akers, Pete D | Additional notes for the sample site and description of sample composition from original snow sampling |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
1904 data points