Decadal oscillations in rainfall and air temperature in the Paute River Basin—Southern Andes of Ecuador
Decadal oscillations in rainfall and air temperature in the Paute River Basin—Southern Andes of Ecuador
复制标题
厄瓜多尔安第斯山脉南部帕特河流域降雨量和气温的年代际振荡
DOI：
10.1007/s00704-011-0527-4
复制
发表时间：
2012
影响因子：
3.4
通讯作者：
P. Willems
中科院分区：
文献类型：
--
作者：
D. Mora;D. Mora;P. Willems;P. Willems
在安第斯山脉的环境中，降雨量和温度在空间和时间上变化很大。确定气候变异性和气候变化需要对水资源管理进行特别评估。本文分析了20世纪60年代初至90年代初25 ~ 16个测站的月降水和气温资料的异常。这些监测站位于厄瓜多尔南部安第斯山脉的里奥普特盆地。所有测站均在海拔1，800和4，200米范围内。受热带太平洋、亚马逊和热带大西洋气候影响。确定了每个监测站分位数的异常，并检验了其显著性。此外，还研究了年和3个月季节阻塞期异常与不同外部气候影响的相关性。结果显示，整个区域的温度变化相似，受厄尔尼诺-南方涛动的影响很大，特别是在12月至2月季节。在6 - 8月，相关性较弱，表明其他气候因子的影响。高海拔地区气温异常偏高，而深谷地区气温异常不明显。降雨量的变化取决于，除了海拔，其他因素，如方面的方向，坡度和水文制度。最高和最显着的降雨异常出现在东部地区。
In the Andes environment, rainfall and temperature can be extremely variable in space and time. The determination of climate variability and climate change needs a special assessment for water management. This paper examines the anomalies of observed monthly rainfall and temperature data from 25 to 16 stations, respectively, from the early 1960s to the 1990s. The stations are located in the Rio Paute Basin in the Ecuador’s Southern Andes. All stations are within the elevation band 1,800 and 4,200 m a.s.l. and affected by the Tropical Pacific, Amazon, and Tropical Atlantic climate. Anomalies in quantiles were determined for each station and their significance tested. In addition, their correlations with different external climatic influences were studied for anomalies in annual and 3-month seasonal block periods. The results show similar temperature variations for the entire region, which are highly influenced by the El Niño–Southern Oscillation, especially during the December–February season. During June–August, the correlation is weaker showing the influence of other climate factors. Higher temperature anomalies are found at the high elevation sites while at deep valley sites the anomalies are less significant. Rainfall variations depend, in addition to elevation, on additional factors such as the aspect orientation, slope, and hydrological regime. The highest and most significant rainfall anomalies are found in the eastern sites.