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首页> 外文期刊>Theoretical and applied climatology >Trends in spectral UV radiation from long-term measurements at Hoher Sonnblick, Austria
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Trends in spectral UV radiation from long-term measurements at Hoher Sonnblick, Austria

机译：奥地利Hoher Sonnblick长期测量的光谱紫外线辐射趋势

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摘要

High-quality long-term records of spectral UV ir-radiance from the Network for the Detection of Atmospheric Composition Change-affiliated Bentham spectroradiometer at the high-mountain site Hoher Sonnblick (47.05° N, 12.95° E, 3,106 m above sea level) from the period 1997-2011 have been investigated for the existence of trends. Throughout the year, significant upward trends are found at wavelengths of 315 nm and longer. The magnitudes at 315 nm range from +9.3±4.5 %/dec at 45° solar zenith angle (SZA) to +14.2± 3.7 %/dec at SZA 65° for all-sky conditions. The trend estimates at 305 nm are considerably smaller and less significant, yielding between +5.1 ±6.5 and +7.9±7.3 %/dec, depending on SZA. Seasonally, the largest trends are found during winter and spring. Total ozone has significantly increased by year-round + 1.9 ±1.3 %/dec since 1997 and therefore cannot explain these significant increases. They are rather attributed to decreases in total cloud cover and aerosol optical depth.
机译：来自高海拔地区Hoher Sonnblick（北纬47.05°，东经12.95°，海拔3,106 m）的大气成分变化相关Bentham分光光度计检测网络的高光谱紫外线辐射的长期记录从1997年至2011年期间已经对趋势的存在进行了调查。全年中，在315 nm及更长的波长处发现明显的上升趋势。对于全天空条件，在315 nm处，太阳天顶角45°（SZA）时的幅度范围为+ 9.3±4.5％/ dec，SZA 65°处的幅度范围为+ 14.2±3.7％/ dec。在305 nm处的趋势估计值要小得多，而重要性不大，取决于SZA，其结果在+5.1±6.5和+ 7.9±7.3％/ dec之间。季节性而言，冬季和春季是最大的趋势。自1997年以来，臭氧总量全年以1.9±1.3％/ dec的速度大幅增加，因此无法解释这些显着增加。而是将它们归因于总云量和气溶胶光学深度的减少。

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    《Theoretical and applied climatology》 |2012年第4期|585-593|共9页
  • 作者

    M. Fitzka; S. Simic; J. Hadzimustafic;

  • 作者单位

    Institute of Meteorology, University of Natural Resources and Life Sciences, Vienna, Austria;

    Institute of Meteorology, University of Natural Resources and Life Sciences, Vienna, Austria;

    Institute of Meteorology, University of Natural Resources and Life Sciences, Vienna, Austria;

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