Citation:

PANGAEA.948355

Name: Nitrate chemistry of snow samples collected along the CHICTABA transect, East Antarctica, 2013-2014
Published: 2022-09-15
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Antarctica; isotopes; nitrate; snow; transect

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Abstract:

Nitrate samples were originally collected as 0.2-1.5 kg snow samples in the field along the CHICTABA traverse, Antarctica. Snow was collected in three methods: snow pits, skin layer, and 1 m depth layer. For snow pits, snow was collected in increments of 3 cm thick layers. Skin layer samples were collected as the loose snow grains 2-6 mm deep on the surface. The 1 m depth layer samples were taken as a 5-10 cm thick layer surrounding 1 m depth, which was then thoroughly mixed. Samples were melted and nitrate concentrated with a ion exchange resin at Concordia Station, Antarctica. Isotopic analysis performed with MAT253 mass spectrometer at IGE, Grenoble, France.

Keyword(s):

Antarctica; isotopes; nitrate; snow; transect

Funding:

Agence Nationale de la Recherche (ANR), grant/award no. ANR-10-LABX56

Agence Nationale de la Recherche (ANR), grant/award no. ANR-11-EQPX-009-CLIMCOR

Agence Nationale de la Recherche (ANR), grant/award no. ANR-16-CE01-0011-01: EAIIST

BNP Paribas (France), grant/award no. 1115: BNP-Paribas Climate Initiative program 1115 (CHICTABA)

BNP Paribas (France), grant/award no. 1117: BNP-Paribas Climate Initiative program 1117 (CAPOXI 35-75)

BNP Paribas (France), grant/award no. 1169: BNP-Paribas Climate Initiative program 1169 (EAIIST)

Coverage:

Median Latitude: -70.967120 * Median Longitude: 122.180960 * South-bound Latitude: -71.212000 * West-bound Longitude: 111.367000 * North-bound Latitude: -70.431000 * East-bound Longitude: 134.138000

Date/Time Start: 2013-11-30T00:00:00 * Date/Time End: 2013-12-26T00:00:00

Minimum DEPTH, ice/snow: 0.00 m * Maximum DEPTH, ice/snow: 199.50 m

Event(s):

Ant_ABN-01 * Latitude: -71.167000 * Longitude: 111.367000 * Date/Time: 2013-12-12T00:00:00 * Elevation: 2679.0 m * Location: East Antarctica * Campaign: (Chemical and physical analysis in snow/firn for accumulation studies in Adelie L) * Method/Device: Snow/ice sample (SNOW) * Comment: Sample information: P4: 102 cm

Ant_ABN-02 * Latitude: -71.167000 * Longitude: 111.367000 * Date/Time: 2013-12-14T00:00:00 * Elevation: 2679.0 m * Location: East Antarctica * Campaign: (Chemical and physical analysis in snow/firn for accumulation studies in Adelie L) * Method/Device: Snow/ice sample (SNOW) * Comment: Sample information: SK07, D01

Ant_ABN-03 * Latitude: -71.167000 * Longitude: 111.367000 * Date/Time: 2013-12-17T00:00:00 * Elevation: 2679.0 m * Location: East Antarctica * Campaign: (Chemical and physical analysis in snow/firn for accumulation studies in Adelie L) * Method/Device: Snow/ice sample (SNOW)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Akers, Pete D
2	Sample ID	Sample ID		Akers, Pete D
3	DEPTH, ice/snow	Depth ice/snow	m	Akers, Pete D		Geocode
4	Depth, top/min	Depth top	m	Akers, Pete D
5	Depth, bottom/max	Depth bot	m	Akers, Pete D
6	Density, snow	Density snow	kg/m³	Akers, Pete D		Mean density of two shallow cores taken along CHICTABA transect and transferred to pit samples based on depth.
7	Nitrate	[NO3]-	ng/g	Akers, Pete D	Colorimetry
8	δ17O, nitrate, fractional abundance	δ17O NO3		Akers, Pete D	Mass spectrometer MAT253
9	δ18O, nitrate, fractional abundance	δ18O NO3		Akers, Pete D	Mass spectrometer MAT253
10	Δ17O, anomaly, fractional abundance	Δ17O anomaly		Akers, Pete D	Mass spectrometer MAT253	Δ17O oxygen isotope anomaly (17-O excess) of nitrate, calculated from δ17O and δ18O
11	δ15N, nitrate, fractional abundance	δ15N NO3		Akers, Pete D	Mass spectrometer MAT253
12	Nitrate, standard error	NO3 std e	±	Akers, Pete D	Mass spectrometer MAT253
13	δ17O, standard error	δ17O std e	±	Akers, Pete D	Mass spectrometer MAT253
14	δ18O, standard error	δ18O std e	±	Akers, Pete D	Mass spectrometer MAT253
15	Δ17O, standard error	Δ17O std e	±	Akers, Pete D	Mass spectrometer MAT253
16	δ15N, standard error	δ15N std e	±	Akers, Pete D	Mass spectrometer MAT253
17	Group	Group		Akers, Pete D
18	Site	Site		Akers, Pete D
19	Sample comment	Sample comment		Akers, Pete D		1 = the row of data is a pseudo sample duplicated or extrapolated from other samples for analytical and/or plotting purposes.
20	Surface mass balance	SMB	kg/m²/a	Akers, Pete D	MAR output	Mean surface mass balance (SMB) between 1979 and 2021 in kg/m²/a output from from MAR v3.12.1 using ERA5 data.
21	Confidence interval	CI		Akers, Pete D	Calculated	95% confidence interval of the 1979-2021 mean SMB.
22	Model error	Model e	±	Akers, Pete D	Calculated	Average model error for 1979-2021 in SMB estimate output of MAR v3.12.1, calculated by comparing modeled SMB to in situ SMB observations.
23	Surface mass balance	SMB	kg/m²/a	Akers, Pete D	MAR output	Mean surface mass balance (SMB) between 2011 and 2013 in kg/m²/aoutput from from MAR v3.12.1 using ERA5 data.
24	Confidence interval	CI		Akers, Pete D	Calculated	95% confidence interval of the 2011-2013 mean SMB.
25	Model error	Model e	±	Akers, Pete D	Calculated	Average model error for 2011-2013 in SMB estimate output of MAR v3.12.1, calculated by comparing modeled SMB to in situ SMB observations.
26	Surface mass balance	SMB	kg/m²/a	Akers, Pete D	MAR output	Surface mass balance (SMB) for 2013 in kg/m²/a output from from MAR v3.12.1 using ERA5 data.
27	Surface mass balance	SMB	kg/m²/a	Akers, Pete D	MAR output	Model error for 2013 in SMB estimate output of MAR v3.12.1, calculated by comparing modeled SMB to in situ SMB observations.

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

6163 data points

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