Denitrification in the Arctic winter 2004/2005: Observations from ACE‐FTS
Denitrification in the Arctic winter 2004/2005: Observations from ACE‐FTS
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2004/2005 年北极冬季的反硝化：ACE-FTS 的观测
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
P. Bernath
中科院分区：
文献类型：
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作者：
J. Jin;K. Semeniuk;G. Manney;A. Jonsson;S. Beagley;J. McConnell;C. Rinsland;C. Boone;K. Walker;P. Bernath
北极反硝化作用在2004/2005年冬季进行了分析，使用卫星仪器ACE-FTS的测量。采用了两种基于奇氮（NOy）与甲烷和与人工长寿命示踪剂的相关性变化的方法。观测结果表明，在极涡15 km ~ 20 km范围内存在着明显的反硝化作用，而且在空间上是不均匀的。在2005年3月中旬涡旋破裂之前，使用这两种方法在10450 K（1017 km）下观察到8 ± 0.8 ppbv的最大反硝化作用，相对减少超过50%。当平均在极涡3月上半月，反硝化在这一水平约为4.4 ppbv和5.0 ppbv的人工示踪法和相关法，分别。
Arctic denitrification in the winter 2004/2005 is analyzed using measurements from the satellite instrument ACE‐FTS. Two methods based on changes in the correlations of odd nitrogen (NOy) versus methane and versus an artificial long‐lived tracer are employed. The observations show that significant denitrification occurred in the region 15 km–20 km and that it was spatially inhomogeneous within the polar vortex. Before the vortex breakup in mid‐March 2005 a maximum denitrification of 8 ± 0.8 ppbv, accounting for a relative reduction of over 50%, was observed at ∼450 K (∼17 km) using both methods. When averaged over the polar vortex for the first half of March, the denitrification at this level was about 4.4 ppbv and 5.0 ppbv from the artificial tracer method and the correlation method, respectively.