Stratospheric ozone depletion and tropospheric ozone increases drive Southern Ocean interior warming
Stratospheric ozone depletion and tropospheric ozone increases drive Southern Ocean interior warming
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平流层臭氧消耗和对流层臭氧增加导致南大洋内部变暖
DOI：
10.1038/s41558-022-01320-w
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发表时间：
2022
影响因子：
30.7
通讯作者：
Swart, Neil C.
中科院分区：
文献类型：
--
作者：
Liu, Wei;Hegglin, Michaela I.;Checa-Garcia, Ramiro;Li, Shouwei;Gillett, Nathan P.;Lyu, Kewei;Zhang, Xuebin;Swart, Neil C.
在二十世纪后半叶，平流层和对流层的大气臭氧发生了明显的变化，平流层臭氧消耗，对流层臭氧增加。到目前为止，这些变化对海洋热量吸收的影响尚不清楚。在这里，我们表明，平流层和对流层臭氧的变化都有助于南大洋内部变暖，后者更为重要。1955年至2,000年期间的臭氧变化导致南大洋上层2 000米的海洋热含量净增加约30%，其中约60%归因于对流层增加，40%归因于平流层减少。此外，这两个变暖的贡献表现出不同的物理机制：对流层臭氧的增加，主要是通过加深的等密度线在南大洋次表层变暖，而平流层臭氧通过辛辣的变化沿着等密度线造成消耗。我们的研究结果强调，对流层臭氧不仅仅是一种空气污染物，而且作为一种温室气体，对南大洋变暖至关重要。
Atmospheric ozone has undergone distinct changes in the stratosphere and troposphere during the second half of the twentieth century, with depletion in the stratosphere and an increase in the troposphere. Until now, the effect of these changes on ocean heat uptake has been unclear. Here we show that both stratospheric and tropospheric ozone changes have contributed to Southern Ocean interior warming with the latter being more important. The ozone changes between 1955 and 2000 induced about 30% of the net simulated ocean heat content increase in the upper 2,000 m of the Southern Ocean, with around 60% attributed to tropospheric increases and 40% to stratospheric depletion. Moreover, these two warming contributions show distinct physical mechanisms: tropospheric ozone increases cause a subsurface warming in the Southern Ocean primarily via the deepening of isopycnals, while stratospheric ozone causes depletion via spiciness changes along isopycnals. Our results highlight that tropospheric ozone is more than an air pollutant and, as a greenhouse gas, has been pivotal to the Southern Ocean warming.
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影响因子：
--
作者：
J. Sallée;E. Shuckburgh;N. Bruneau;A. Meijers;T. Bracegirdle;Zhaomin Wang;T. Roy
通讯作者：
J. Sallée;E. Shuckburgh;N. Bruneau;A. Meijers;T. Bracegirdle;Zhaomin Wang;T. Roy
影响因子：
5.2
作者：
M. Sigmond;M. C. Reader;J. Fyfe;N. Gillett
通讯作者：
M. Sigmond;M. C. Reader;J. Fyfe;N. Gillett
影响因子：
4.9
作者：
Jia‐Rui Shi;L. Talley;S. Xie;Wei Liu;S. Gille
通讯作者：
Jia‐Rui Shi;L. Talley;S. Xie;Wei Liu;S. Gille
DOI：
--
发表时间：
1992
期刊：
影响因子：
--
作者：
F. Rowland
通讯作者：
F. Rowland
影响因子：
7.3
作者：
Nijsse, Femke J. M. M.;Cox, Peter M.;Williamson, Mark S.
通讯作者：
Williamson, Mark S.