Observations of PW activity in the MLT during SSW events using a chain of SuperDARN radars and SD-WACCM
Observations of PW activity in the MLT during SSW events using a chain of SuperDARN radars and SD-WACCM
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使用 SuperDARN 雷达链和 SD-WACCM 观测 SSW 事件期间 MLT 中的 PW 活动
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
R. Hibbins
中科院分区：
文献类型：
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作者：
N. H. Stray;Y. Orsolini;P. Espy;V. Limpasuvan;R. Hibbins
匿名回复#1接收并发表：14 February 2015一般评论在stray et al.的这项研究中，作者通过SuperDARN雷达测量网络和WACCM的模拟研究了SSW事件后MLT行星波活动。作者显示了令人信服的证据，增强PW活动（S1和S2）在MLT与平流层风逆转在50公里的3天滞后。PW活动的增强不仅出现在伴有平流层顶升高的强SSW事件之后，而且也出现在较小量级的SSW事件之后，其中风逆转可能仅持续长达4天。作者推测，PW活动的增强可能是由于在MLT中通过GW拖曳的纬向不对称或由于斜压/正压不稳定的发展原位生成PW。
Anonymous Referee #1 Received and published: 14 February 2015 General Comments In this study by stray et al., the authors study the MLT planetary wave activity following SSW events from a network of SuperDARN radar measurements and simulations from specified dynamics WACCM. The authors show compelling evidence of enhanced PW activity (s1 and S2) in the MLT with a 3-day lag from stratospheric wind reversals at 50 km. The enhancement in PW activity is seen not only after strong SSW events with elevated stratopause events but also after smaller magnitude SSW events where the wind reversals might persist for only up to 4 days. The authors speculate that the enhancement in PW activity might be due to in-situ generation of PW in the MLT by either zonal asymmetry in GW drag or due to the development of baroclinic/barotropic instabilities.