Long‐term trends and the effect of solar cycle variations on mesospheric winter temperatures over Longyearbyen, Svalbard (78°N)
Long‐term trends and the effect of solar cycle variations on mesospheric winter temperatures over Longyearbyen, Svalbard (78°N)
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斯瓦尔巴群岛朗伊尔城（78°N）冬季中层温度的长期趋势和太阳周期变化的影响
DOI：
10.1002/2013jd021195
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
F. Sigernes
中科院分区：
文献类型：
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作者：
S. Holmen;M. Dyrland;F. Sigernes
本文介绍了1983年至2013年在斯瓦尔巴特群岛朗伊尔宾(78°N，16°E)用1 m埃伯特-法斯蒂光谱仪测量的氢氧化物(OH*)气辉冬季温度的长期趋势。通过对测量的OH*(6-2)振动态的气辉光谱进行合成拟合，得到了温度。通过减去平均气候学，对数据集进行了季节变化校正。此外，还研究了太阳活动周期的依赖关系。根据F10.7 cm的太阳射电通量数据，计算出太阳响应系数为3.6 K ±4.0 K/100 太阳射电通量单位。在扣除气候学和太阳响应后，剩下的长期趋势是一个接近零的趋势，−为0.2 K ± 为0.5 K/十年。对月气温的趋势分析表明，11月、1月和2月的趋势为正，而12月的趋势为负，但不确定性很高。
This paper gives an update on the long‐term trend in hydroxyl (OH*) airglow winter temperatures measured by a 1 m Ebert‐Fastie spectrometer in Longyearbyen, Svalbard (78°N, 16°E), from 1983 to 2013. The temperatures are derived through synthetic fits of measured airglow spectra of the OH*(6‐2) vibrational state. The data set is corrected for seasonal variations by subtracting the mean climatology. Also, solar cycle dependence is investigated. A solar response coefficient of 3.6 K ± 4.0 K/100 solar flux units (SFU) is calculated from F10.7 cm solar radio flux data. After subtraction of the climatology and solar response, the remaining long‐term trend is a near‐zero trend, −0.2 K ± 0.5 K/decade. Trend analysis of monthly temperatures indicates positive trends for November, January, and February and a negative trend for December, but the uncertainties are high.