太阳准周期变化对北半球夏季平流层加热率的影响
投稿时间: 2016-01-24  最后修改时间: 2016-02-26  点此下载全文
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郭栋 南京信息工程大学大气科学学院 505375660@qq.com 
中文摘要:利用欧洲中期数值预报中心1979-2013年6-8月的ERA-Interim逐月再分析资料,和美国大气和海洋管理局2004-2010年6-8月太阳光谱辐照度资料,采用北京气候中心大气辐射模式,计算了北半球平流层夏季臭氧加热率(OHR)和净加热率(NHR),比较了太阳准11年变化中太阳活动强弱年纬向平均OHR、NHR的差异,讨论了差异形成的原因。结果如下:太阳活动强年较弱年,紫外辐射明显较强,导致OHR、NHR整层增强,且随高度增加而增加;臭氧浓度在平流层下层较弱,在平流层上层较强,该变化导致OHR、NHR有类似的变化型,并稍向高处偏移;OHR、NHR在平流层上层的变化,由紫外辐射和臭氧共同作用,其他地区均为臭氧起主要作用。
中文关键词:太阳循环  紫外辐射  臭氧  加热率  平流层
 
Effects of solar quasi periodic variations on stratospheric heating rate of the northern hemisphere in summer
Abstract:The ozone heating rate (OHR) and total heating rate (NHR) in Northern Hemisphere summer in stratosphere is calculated by using the ERA-Interim monthly reanalysis data during 1979- 2013 from European Centre for Medium-Range Weather Forecasts and daily measurements of the solar spectrum data from 2004 to 2010 from Space Weather Prediction Center in National Oceanic and Atmospheric Administration, and based on the BCC-RAD Model. Differences and causes of the OHR and NHR in the 11-yr solar cycle are discussed in stratosphere. The results can be summarized as follows: Compared to the solar weak regime, the ultraviolet radiation indicates the strong positive anomaly in the solar strong regime, which results the OHR and NHR show the positive anomaly in whole stratosphere, and increases as the height increase. Ozone volume mixing ratio shows negative anomaly in lower stratosphere, and positive in upper, and leads to the similar pattern of both OHR and NHR, and height migration (because of the efficiency of ozone absorption in ultraviolet increases with the height). As for OHR and NHR, the ultraviolet radiation plays the main role at stratopause, and in other spaces, ozone takes the most important part in ozone heating rate anomaly.
keywords:Solar cycle  Ultraviolet  Ozone  Heating rate  Stratosphere
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