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Cross-correlations between weather variables in Australia

机译：澳大利亚天气变量之间的相互关系

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The information on climate variations is essential for the research of many subjects, such as the performance of buildings and agricultural production. However, recorded meteorological data are often incomplete. There may be a limited number of locations recorded, while the number of recorded climatic variables and the time intervals can also be inadequate. Therefore, the hourly data of key weather parameters as required by many building simulation programmes are typically not readily available. To overcome this gap in measured information, several empirical methods and weather data generators have been developed. They generally employ statistical analysis techniques to model the variations of individual climatic variables, while the possible interactions between different weather parameters are largely ignored. Based on a statistical analysis of 10 years historical hourly climatic data over all capital cities in Australia, this paper reports on the finding of strong correlations between several specific weather variables. It is found that there are strong linear correlations between the hourly variations of global solar irradiation (GSI) and dry bulb temperature (DBT), and between the hourly variations of DBT and relative humidity (RH). With an increase in GSI, DBT would generally increase, while the RH tends to decrease. However, no such a clear correlation can be found between the DBT and atmospheric pressure (P), and between the DBT and wind speed. These findings will be useful for the research and practice in building performance simulation.
机译：气候变化信息对于许多主题的研究至关重要，例如建筑物的性能和农业生产。但是，记录的气象数据通常不完整。可能记录的位置数量有限，而记录的气候变量的数量和时间间隔也可能不足。因此，许多建筑物模拟程序所需的关键天气参数的小时数据通常不容易获得。为了克服测量信息中的这一空白，已经开发了几种经验方法和天气数据生成器。他们通常采用统计分析技术来对单个气候变量的变化进行建模，而很大程度上忽略了不同天气参数之间可能的相互作用。基于对澳大利亚所有首府城市10年历史小时气候数据的统计分析，本文报告了一些特定天气变量之间强相关性的发现。发现在全球太阳辐射（GSI）的每小时变化与干球温度（DBT）之间以及DBT的每小时变化与相对湿度（RH）之间存在很强的线性相关性。随着GSI的增加，DBT通常会增加，而RH则倾向于降低。但是，在DBT与大气压力（P）之间以及DBT与风速之间没有发现这种明显的相关性。这些发现对于建筑物性能模拟的研究和实践将是有用的。

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