First measurements and modeling of Δ17O in atmospheric nitrate -: art. no. 1870

被引：271

作者：

Michalski, G ^{[1
]}

Scott, Z ^{[1
]}

Kabiling, M ^{[1
]}

Thiemens, MH ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2003年 / 30卷 / 16期

关键词：

D O I：

10.1029/2003GL017015

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

[1] Atmospheric nitrate is anomalously enriched in both the O-18/O-16 and O-17/O-16 isotopic ratios, with Delta(17)O = 20 - 30.8parts per thousand (Delta(17)O = delta(17)O - .52 x delta(18)O). We have modeled the seasonal variation in Delta(17)O by utilizing the transfer of Delta(17)O from ozone to HNO3 during NOx oxidation reactions and by evaluating the relative source strengths of heterogeneous and homogenous HNO3 production. The implications for new insights into the global nitrogen cycle, N2O production and paleoclimate studies are discussed.

引用

页数：4

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