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首页> 外文期刊>Climatic Change >Corrections of systematic errors, data homogenisation and climatic analysis of the Padova pressure series (1725-1999).
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Corrections of systematic errors, data homogenisation and climatic analysis of the Padova pressure series (1725-1999).

机译：修正帕多瓦压力系列（1725-1999）的系统误差，数据均一化和气候分析。

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A short history of the series with daily observations of barometric pressure in Padova (since 1725) is made, with special reference to the types of barometers used, their locations, the types of corrections (which were only partial in the early period), the calibrations and the comparison with primary instruments. The paper also describes the homogenisation of the series and the procedures used to fill the small gaps. The Padova series was compared with previously well investigated series from the ADVICE and IMPROVE projects and especially with the nearby Milan series in order to check its reliability. Trend analysis shows an increase in pressure (some 1 hPa) during the last a hundred year. This trend is a common feature for Northern Italy. An effect of the increased air pressure is a local lowering of the Northern Mediterranean Sea level by 1 cm. The part of the year mostly affected by this increase is from late spring to August and corresponds to an extension of the hot season, characterised by an earlier start, and longer duration of the Azores Anticyclone. This reduces the penetration of the Atlantic disturbances in the Northern Mediterranean and the precipitation associated with the passage of fronts. This change is associated with an increase in thermoconvective activity with thunderstorms and heavy precipitation. This explains why, in the last decades, the annual total amount of precipitation is slightly decreased and at the same time the frequency of intense rainfall is increased. Moreover, a comparison of the day-to-day pressure variability with the Western Mediterranean Oscillation (WeMO) indicates a significant positive correlation during the late autumn-early winter period. An increase of the WeMO index means a strengthening of the baric dipole from Azores to Northern Italy, that could be explained by a deepening of the cyclonic circulation over northern Italy from November to January..
机译：对该系列进行了简短的历史记录，每天对帕多瓦的气压进行观测（自1725年以来），特别参考了所用气压计的类型，其位置，校正类型（在早期仅是局部的），校准以及与主要仪器的比较。本文还描述了系列的均质化以及用于填补小空白的程序。为了检查其可靠性，将帕多瓦（Padova）系列与ADVICE和IMPROVE项目先前经过深入研究的系列（尤其是附近的米兰系列）进行了比较。趋势分析显示，过去一百年来压力增加（大约1 hPa）。这种趋势是意大利北部的共同特征。气压升高的影响是北地中海海平面局部降低了1厘米。受此增加影响最大的一年部分是从春季末到八月，对应于炎热季节的延长，其特征是亚速尔群岛反气旋的开始较早，持续时间更长。这减少了北大西洋北部大西洋干扰的渗透以及与锋面通过相关的降水。这种变化与雷暴和强降水带来的热对流活动增加有关。这就解释了为什么在过去的几十年中，每年的总降水量略有减少，而同时强降雨的频率却增加了。此外，日常压力变化与西地中海涛动（WeMO）的比较表明，在深秋至初冬期间，存在显着的正相关。 WeMO指数的增加意味着从亚速尔群岛到意大利北部的重子偶极子增强，这可以用11月至1月意大利北部上空的气旋环流加深来解释。

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