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首页> 外文OA文献 >Variability of rainfall and temperature (1912-2008) parameters measured from Santa Maria (29 degrees 41 ' S, 53 degrees 48 ' W) and their connections with ENSO and solar activity
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Variability of rainfall and temperature (1912-2008) parameters measured from Santa Maria (29 degrees 41 ' S, 53 degrees 48 ' W) and their connections with ENSO and solar activity

机译：从santa maria（29度41'，53度48'W）测量的降雨和温度变化（1912-2008）及其与ENsO和太阳活动的关系

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摘要

In this work, we analyze the long term variability of rainfall and temperature (1912-2008) of Santa Maria (29 degrees S, 53 degrees W) and its possible connection with natural influences such as solar activity and ENSO. Temperature and rainfall present similar frequencies as revealed by spectral analyses. This analysis shows a large number of short periods between 2-8 years and periods of 11.8-12.3, 19.1-21.0, and 64.3-82.5 years. The cross correlation for rainfall and temperature versus Southern Oscillation Index (SOI) have higher cross-power around 2-8 yr. Rainfall and temperature versus sunspot number (Rz) showed higher cross-power around the 11-yr solar cycle period. A high and continuous cross correlation was observed for Rz-22 yr versus rainfall and temperature. Furthermore, the power between 22-yr solar cycle and meteorological parameters was higher than that obtained with the 11-yr solar cycle, suggesting that the effect of Hale cycle on climate may be stronger than the Schwabe cycle effect. These results indicate that the variability of rainfall and temperature is closely related to the variation of the Southern Oscillation Index and solar activity, and that the El Nino Southern Oscillation and solar activity probably play an important role in the climate system over Southern Brazil. (C) 2011 Elsevier Ltd. All rights reserved.
机译：在这项工作中，我们分析了圣玛丽亚（29华氏度，53华氏度）的降雨和温度（1912-2008）的长期变化及其与太阳活动和ENSO等自然影响的可能联系。频谱分析显示，温度和降雨呈现相似的频率。此分析显示了2-8年之间的大量短期，以及11.8-12.3、19.1-21.0和64.3-82.5年的短期。降雨和温度与南方涛动指数（SOI）的互相关在2-8年左右具有更高的互功率。降雨和温度与黑子数（Rz）的关系在11年太阳周期期间显示出更高的交叉功率。 Rz-22 yr与降雨和温度之间存在高且连续的互相关。此外，22年太阳周期和气象参数之间的功率高于11年太阳周期获得的功率，这表明Hale周期对气候的影响可能强于Schwabe周期的影响。这些结果表明，降雨和温度的变化与南方涛动指数和太阳活动的变化密切相关，而厄尔尼诺南方涛动和太阳活动可能在巴西南部的气候系统中发挥重要作用。 （C）2011 Elsevier Ltd.保留所有权利。

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