Using the artificial tracer e90 to examine present and future UTLS tracer transport in WACCM
Using the artificial tracer e90 to examine present and future UTLS tracer transport in WACCM
复制标题
使用人工示踪剂 e90 检查 WACCM 中当前和未来的 UTLS 示踪剂传输
DOI：
10.1175/jas-d-17-0135.1
复制
发表时间：
2017
影响因子：
3.1
通讯作者：
R. Garcia
中科院分区：
文献类型：
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作者：
M. Abalos;W. Randel;D. Kinnison;R. Garcia
摘要利用全大气社区气候模式（WACCM）模拟了1955-2099年对流层上部和平流层下部（UTLS）大尺度示踪剂的输送。分析是基于e90，一种人造被动示踪剂，具有恒定的排放量和大气损失率。平流的剩余环流，涡混合，和次网格对流总运输的单独贡献明确评估。结果突出了不同的大规模运输制度在热带地区，其特点是有效的垂直示踪剂运输，和热带外，等熵混合为主。一个新的结果是在热带对流层上部的垂直涡混合的重要作用。结果表明，e90的年际变化主要是由厄尔尼诺-南方涛动和准两年振荡驱动的。长期趋势强调了对流层顶上升与气候变化对UTLS动力学和示踪剂输送的强烈影响。那个...
AbstractLarge-scale tracer transport in the upper troposphere and lower stratosphere (UTLS) is investigated using simulations of the Whole Atmosphere Community Climate Model (WACCM) over the period 1955–2099. The analyses are based on e90, an artificial passive tracer with constant emissions and atmospheric loss rates. The separate contributions of advection by the residual circulation, eddy mixing, and subgrid convection to total transport are explicitly evaluated. The results highlight distinct large-scale transport regimes in the tropics, characterized by efficient vertical tracer transport, and the extratropics, dominated by isentropic mixing. One novel result is the important role of vertical eddy mixing in the tropical upper troposphere. It is shown that interannual variability in e90 is largely driven by El Nino–Southern Oscillation and the quasi-biennial oscillation. The long-term trends emphasize a strong impact of a rising tropopause with climate change on UTLS dynamics and tracer transport. The...
影响因子：
--
作者：
Hu Yang;G. Lohmann;Wei Wei-Wei;M. Dima;M. Ionita;Jiping Liu
通讯作者：
Hu Yang;G. Lohmann;Wei Wei-Wei;M. Dima;M. Ionita;Jiping Liu
2000 年至 2100 年平流层和对流层臭氧变化的驱动因素
DOI：
10.5194/acpd-15-30645-2015
发表时间：
2015
期刊：
--
影响因子：
--
作者：
Banerjee A
通讯作者：
Banerjee A
影响因子：
5.2
作者：
Sophie Oberländer‐Hayn;E. Gerber;J. Abalichin;H. Akiyoshi;A. Kerschbaumer;A. Kubin;M. Kunze;U. Langematz;Stefanie Meul;M. Michou;O. Morgenstern;L. Oman
通讯作者：
Sophie Oberländer‐Hayn;E. Gerber;J. Abalichin;H. Akiyoshi;A. Kerschbaumer;A. Kubin;M. Kunze;U. Langematz;Stefanie Meul;M. Michou;O. Morgenstern;L. Oman