Data from: Lilac and honeysuckle phenology data 1956-2014

The dataset is comprised of leafing and flowering data collected across
the continental United States from 1956 to 2014 for purple common lilac
(Syringa vulgaris), a cloned lilac cultivar (S. x chinensis 'Red
Rothomagensis') and two cloned honeysuckle cultivars (Lonicera
tatarica 'Arnold Red' and L. korolkowii 'Zabeli').
Applications of this observational dataset range from detecting regional
weather patterns to understanding the impacts of global climate change on
the onset of spring at the national scale. While minor changes in methods
have occurred over time, and some documentation is lacking, outlier
analyses identified fewer than 3% of records as unusually early or late.
Lilac and honeysuckle phenology data have proven robust in both model
development and climatic research.

本数据集收录1956年至2014年间美国大陆范围内收集的普通紫丁香（Syringa vulgaris）、一个丁香克隆栽培品种（S. x chinensis 'Red Rothomagensis'）以及两个忍冬克隆栽培品种（鞑靼忍冬Lonicera tatarica 'Arnold Red'与科尔科夫忍冬L. korolkowii 'Zabeli'）的展叶与开花物候数据。该观测数据集的应用场景广泛，可用于区域天气模式检测，以及探究全球气候变化对全国尺度春季物候起始的影响。尽管研究方法随时间存在小幅调整，且部分记录的文档资料有所缺失，但异常值分析结果显示，仅不到3%的记录被判定为异常偏早或偏晚。现有研究已证实，丁香与忍冬的物候数据在模型构建与气候相关研究中均具备良好的稳健性。