Concentration and isotopic composition of atmospheric N2O over the last century ...

We have reconstructed the atmospheric N2O mole fraction and its isotopic composition by combining data from ice cores, firn air, and atmospheric samples. The mole fraction reconstruction extends back to 1000 CE using ice cores, firn air, and atmospheric sampling; and the isotopic reconstruction exte...

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Bibliographic Details
Main Authors: Ahn, Jinho, Buizert, Christo, Etheridge, David, Ghosh, Sambit, Joong Kim, Seong, Langenfelds, Ray L, Toyoda, Sakae, Yoshida, Naohiro
Format: Dataset
Language:English
Published: U.S. Antarctic Program (USAP) Data Center 2023
Subjects:
Greenhouse Gas
Nitrous Oxide
Site-specific 15N isotopomer
Ice Core Data
Atmosphere
Cryosphere
Anthropogenic Emission
Nitrification and Denitrification Processes
East Antarctica
Greenland
Antarc*
Antarctica
ice core
North Greenland
Online Access:https://dx.doi.org/10.15784/601693
https://www.usap-dc.org/view/dataset/601693
Description
Summary:We have reconstructed the atmospheric N2O mole fraction and its isotopic composition by combining data from ice cores, firn air, and atmospheric samples. The mole fraction reconstruction extends back to 1000 CE using ice cores, firn air, and atmospheric sampling; and the isotopic reconstruction extends back to 1900 CE using only firn air data. We have incorporated both newly measured and previously published data. We present new data for the mole fraction, d15Nbulk, d18O, and d15NSP values from the Styx (East Antarctica) firn air, and mole fraction from the North Greenland Eemian Ice drilling Project (NEEM) firn air. We have used published records from the Styx and NEEM ice cores, direct atmospheric measurements from the NOAA global sampling network, and firn air data, giving a total of 11 sites for N2O mole fraction, 12 sites for d15Nbulk, 11 sites for d18O, and 8 sites for d15NSP values. ...

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