The 11-year solar cycle in stratospheric ozone: Comparison between Umkehr and SBUVv8 and effects on surface erythemal irradiance
The 11-year solar cycle in stratospheric ozone: Comparison between Umkehr and SBUVv8 and effects on surface erythemal irradiance
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平流层臭氧的 11 年太阳周期：Umkehr 和 SBUVv8 的比较及其对表面红斑辐照度的影响
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
A. Bais
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作者：
K. Tourpali;C. Zerefos;D. Balis;A. Bais
[1]根据五个观测站的地面Umkehr测量和太阳背向散射紫外线(SBUVv8)卫星观测的合并数据集得出的臭氧廓线被用来估计11年太阳信号对平流层臭氧垂直分布的季节性影响。根据早先的报告，这两组数据都显示在平流层上层有一个强烈的响应(年平均值的2-3%)，在热带中平流层有一个很小的响应，在热带下部平流层有一个次要的极大值(∼2%)。因此，在太阳周期对热带臭氧影响的垂直模式中可以看到一系列高-低-高响应，其位置对季节敏感，因为它似乎以与太阳最大太阳辐射位置相反的方向穿过赤道。Umkehr和卫星观测的结果在35公里以下的高度非常一致，而在更高的高度(约40公里)发现的差异(高达2%)在夏季最大。最后，根据在太阳周期(从最小到最大)期间观测到的臭氧变化计算出的对11年太阳周期的估计红斑辐照度响应显示，热带地区表面的辐照度总体下降，最大值(−为年平均值的2%)。
[1] Ozone profiles derived from ground-based Umkehr measurements at five stations and from the merged data set of Solar Backscattered Ultra Violet (SBUVv8) satellite observations are used to estimate the seasonal influence of the 11-year solar signal in the vertical distribution of stratospheric ozone. Both data sets show a strong response (2–3% of the annual mean) in the upper stratosphere, a very small response in the middle tropical stratosphere and a secondary maximum (∼2%) in the tropical lower stratosphere, in accordance to earlier reports. Thus a sequence of high-low-high response is seen in the vertical pattern of the solar cycle effect on ozone in the tropics, with its position sensitive to season, as it appears to move across the equator in direction opposite to the location of the maximum solar insolation. Results from Umkehr and satellite observations are in good agreement at levels up to 35 km, while discrepancies (of up to 2%) found at higher levels (around 40 km) are largest in summer. Finally, the estimated erythemal irradiance response to the 11-year solar cycle, calculated for the observed ozone change during a solar cycle (minimum to maximum), showed an overall decrease in the irradiance at the surface which is maximum (−2% of annual mean) over the tropics.