Environmental conditions in various regions can have a severely negative impact on the longevity and durability of the civil engineering infrastructures. In 2018, a published paper used 1971 to 2010 NOAA data from the contiguous United States to examine the temporal changes in secondary climate attributes (freeze-thaw cycles and freeze index) using the climate normals from two time windows, 1971-2000 and 1981-2010. That paper investigated whether there have been statistically significant changes in climate attribute levels across the two time windows, and used GIS-based interpolation methods to develop isarithmic maps of the climate attributes to facilitate their interpretation and application. This paper updates that study. In this study, we use NOAA climatic data from 1991 to 2020 to construct continuous surface maps showing the values of the primary and secondary climate attributes at the 48 continental states. The new maps provide an updated picture of the freeze index values and freeze-thaw cycles for the most recent climate condition. These new values provide a better picture of the freezing season characteristics of the United States, and will provide information necessary for better winter maintenance procedures and infrastructure design to accommodate regional climate differences.

中文翻译：

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重新审视交通基础设施管理的次要气候属性：2020 年的 Redux 和更新

不同地区的环境条件会对土木工程基础设施的寿命和耐久性产生严重的负面影响。2018 年，一篇发表的论文使用来自美国本土的 1971 年至 2010 年 NOAA 数据，使用 1971-2000 和 1981- 两个时间窗口的气候平均值来检查次要气候属性（冻融循环和冻结指数）的时间变化。 2010 年。该论文调查了两个时间窗口内气候属性水平是否存在统计学上的显着变化，并使用基于 GIS 的插值方法开发了气候属性的等数图，以促进其解释和应用。本文更新了该研究。在这项研究中，我们使用 NOAA 1991 年至 2020 年的气候数据来构建连续的地表地图，显示 48 个大陆国家的主要和次要气候属性的值。新地图提供了最新气候条件下的冻结指数值和冻融循环的更新图片。这些新值更好地描述了美国的冰冻季节特征，并将为更好的冬季维护程序和基础设施设计提供必要的信息，以适应区域气候差异。