Data from: Drivers of flight altitude during nocturnal bird migration over the North Sea and implications for offshore wind energy

The data provided belongs to the manuscript: Drivers of flight altitude during nocturnal bird migration over the North Sea and implications for offshore wind energy published in Conservation Science and Practice by Maja Bradarić, Bart Kranstauber, Willem Bouten, Hans van Gasteren and Judy Shamoun-Baranes.
Files named "radar_data" contain information on track altitudes per timestamp and night collected during the spring and autumn migration seasons from 2019-2021 by radars positioned in Luchterduinen and Borssele wind farms off the western Dutch coast. The data provided has been post-processed according to the steps described in detail in the accompanying paper and supplementary information therein.
Raw radar data, processed by the radar software, is collected by Rijkswaterstaat (the Dutch Ministry of Infrastructure and Water Management), and a copy is stored by the University of Amsterdam. For more information about the data, contact the authors.
The files named "model_data" contain information about the hourly fraction of low-altitude migration (lt_ratio) throughout the spring and autumn migration seasons at both radar locations. They also contain hourly values of variables used in the model to explain the main drivers of low-altitude migration. The complete list of variables and their abbreviations is available in the associated paper.

本数据集隶属于学术论文《北海夜间鸟类迁徙飞行高度的驱动因素及其对海上风电的启示》，该论文由Maja Bradarić、Bart Kranstauber、Willem Bouten、Hans van Gasteren与Judy Shamoun-Baranes发表于《保护科学与实践（Conservation Science and Practice）》。
名为"radar_data"的文件存储了按时间戳和夜间划分的轨迹高度信息，这些数据采集于2019至2021年春秋迁徙季，由部署在荷兰西海岸外的Luchterduinen与Borssele风电场的雷达获取。本次提供的数据集已按照配套论文及其中补充材料中详述的步骤完成后处理。
原始雷达数据经雷达软件处理后，由荷兰基础设施与水资源部（Rijkswaterstaat）采集，阿姆斯特丹大学（University of Amsterdam）留存有该数据的副本。如需了解本数据集的更多信息，请联系论文作者。
名为"model_data"的文件存储了两个雷达站点在春秋迁徙季逐小时的低空迁徙占比（lt_ratio）信息，同时包含了用于构建解释低空迁徙主要驱动因素的模型的逐小时变量数值。变量的完整清单及其缩写可查阅相关论文。