平流层突然变暖对臭氧平流层到对流层输送的影响

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Geophysical Research Letters Pub Date : 2025-01-14 DOI:10.1029/2024gl112588

Jaewon Lee, Amy H. Butler, John R. Albers, Yutian Wu, Simon H. Lee

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引用次数: 0

摘要

平流层突然变暖（SSWs）可以显著影响对流层天气系统。以往的研究表明，ssw也可能影响平流层到对流层的运输（STT），但其时空分布和机制尚不完全清楚。SSWs与El Niño-Southern涛动（ENSO）之间的复杂关系也使得分离SSWs对STT的影响变得困难。利用平流层臭氧示踪剂，利用WACCM4模式进行理想化的ENSO模拟，研究了不同ENSO相位下SSWs对臭氧STT的影响。我们发现，无论ENSO阶段如何，从SSW开始到3个月后，北极、北美和欧洲的对流层低层臭氧都显著增加。本研究在亚季节尺度上强调了SSWs对STT的显著影响。我们的研究结果还强调，在解决ENSO对STT的影响时，需要考虑ssw。

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Impact of Sudden Stratospheric Warmings on the Stratosphere-To-Troposphere Transport of Ozone

Sudden stratospheric warmings (SSWs) can significantly impact tropospheric weather systems. Previous studies suggest that SSWs may also influence stratosphere-to-troposphere transport (STT), but their spatial and temporal distribution and mechanisms are not fully understood. The complex relationships between SSWs and the El Niño-Southern Oscillation (ENSO) have also made it difficult to isolate the effects of SSWs on STT. From an idealized ENSO simulation with the WACCM4 model using a stratospheric origin ozone tracer, we investigate the effect of SSWs on the STT of ozone under different ENSO phases. We find a significant increase in lower tropospheric ozone from the SSW onset up to 3 months later over the Arctic, North America, and Europe, regardless of the ENSO phase. This study highlights the significant influence of SSWs on STT on a subseasonal scale. Our results also emphasize the need to consider SSWs when addressing the ENSO impact on STT.

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来源期刊

Geophysical Research Letters 地学-地球科学综合

CiteScore

9.00

自引率

9.60%

发文量

1588

审稿时长

2.2 months

期刊介绍： Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.