GISP2 ice core N2O data

• Main Authors: Sowers, Todd A, Alley, Richard B, Jubenville, J
• Format: Dataset
• Language: English
• Published: PANGAEA 2003
• Subjects: DEPTH; ice/snow; DRILL; Drilling/drill rig; Gas age; GISP; GISP2; Greenland Ice Core Projects; GRIP/GISP/NGRIP; Nitrous oxide; Sampling/drilling ice; Standard deviation; Greenland; Greenland ice core; GRIP; ice core; NGRIP
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.205718; https://doi.org/10.1594/PANGAEA.205718

Paleoatmospheric records of trace-gas concentrations recovered from ice cores provide important sources of information on many biogeochemical cycles involving carbon, nitrogen, and oxygen. Here, we present a 106,000-year record of atmospheric nitrous oxide (N2O) along with corresponding isotopic records spanning the last 30,000 years, which together suggest minimal changes in the ratio of marine to terrestrial N2O production. During the last glacial termination, both marine and oceanic N2O emissions increased by 40 ± 8%. We speculate that our records do not support those hypotheses that invoke enhanced export production to explain low carbon dioxide values during glacial periods.