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Timmermann, Axel
기후물리 연구단
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Atmospheric Nitrous Oxide Variations on Centennial Time Scales During the Past Two Millennia

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Title
Atmospheric Nitrous Oxide Variations on Centennial Time Scales During the Past Two Millennia
Author(s)
Axel Timmermann; Yeongjun Ryu; Jinho Ahn; Ji-Woong Yang; Edward Brook; Thomas Blunier; Hur, S.; Seong-joong Kim
Publication Date
2020-09
Journal
GLOBAL BIOGEOCHEMICAL CYCLES, v.34, no.9, pp.e2020GB006
Publisher
AMER GEOPHYSICAL UNION
Abstract
©2020 The Authors. The continuous growth of atmospheric nitrous oxide (N2O) is of concern for its potential role in global warming and future stratospheric ozone destruction. Climate feedbacks that enhance N2O emissions in response to global warming are not well understood, and past records of N2O from ice cores are not sufficiently well resolved to examine the underlying climate-N2O feedbacks on societally relevant time scales. Here, we present a new high-resolution and high-precision N2O reconstruction obtained from the Greenland NEEM (North Greenland Eemian Ice Drilling) and the Antarctic Styx Glacier ice cores. Covering the N2O history of the past two millennia, our reconstruction shows a centennial-scale variability of ~10 ppb. A pronounced minimum at ~600 CE coincides with the reorganizations of tropical hydroclimate and ocean productivity changes. Comparisons with proxy records suggest association of centennial- to millennial-scale variations in N2O with changes in tropical and subtropical land hydrology and marine productivity
URI
https://pr.ibs.re.kr/handle/8788114/7632
DOI
10.1029/2020GB006568
ISSN
0886-6236
Appears in Collections:
Center for Climate Physics(기후물리 연구단) > 1. Journal Papers (저널논문)
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