Large Atmospheric Waves Will Get Stronger, While Small Waves Will Get Weaker by the End of the 21st Century
Large Atmospheric Waves Will Get Stronger, While Small Waves Will Get Weaker by the End of the 21st Century
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DOI：
10.1029/2020gl090441
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发表时间：
2020-11-28
影响因子：
5.2
通讯作者：
Ming, Y.
中科院分区：
文献类型：
--
作者：
Chemke, R.;Ming, Y.
大气波通过影响风、温度和降水来控制天气和气候的变化。因此，评估它们未来对人为排放的反应至关重要。以往的研究大多是通过不同尺度的波池来研究预估的大气波强度的区域变化。然而，海浪预测的变化可能随其规模而变化，因此，它们未来的气候影响也可能依赖于规模。这里我们表明，在热带和中纬度地区，到本世纪末，大浪会变得更强，小浪会变得更弱。因此，通过汇集所有波浪尺度来研究大气波对人类活动的响应掩盖了大波对未来气候的影响。大、小波浪的相反响应源于静稳定性和纬向风对不同波浪生长速率的相反影响。
Atmospheric waves control the weather and climate variability, by affecting winds, temperature, and precipitation. It is thus critical to assess their future response to anthropogenic emissions. Most previous studies investigated the projected regional changes in the intensity of atmospheric waves, by pooling across waves with different scales. However, the waves' projected changes might vary with their scale, and thus, their future climate impacts might also be scale dependent. Here we show that both in the tropics and midlatitudes while large waves will get stronger, small waves will get weaker by the end of this century. Thus, investigating the response of atmospheric waves to human activity by pooling across all wave scales masks the future climate impacts of large waves. We further reveal that the opposite response of large and small waves stems from the opposite effect of static stability and zonal wind on the growth rate of the different waves.