Combined cyclone and sea-ice lead data for the Arctic for 2002 to 2020

This dataset provides daily lead maps for the Arctic as well as cyclone occurrence information based on a cyclone tracking algorithm (Akperov et al., 2020), which was applied to 6-hourly ERA5 (Hersbach et al., 2020) sea level pressure fields. The data is available on a daily time scale from 2002 to 2020 (leads only available for the months November to April) and has a horizontal resolution of 12.5 km². The purpose of the dataset is to analyze lead formation in the Arctic sea ice in response to cyclone passages. The lead data is based on the ArcLeads product (https://doi.org/10.1594/PANGAEA.955561) derived from MODIS thermal infrared imagery with 1 km² spatial resolution (Reiser et al., 2020).本数据集提供北极地区每日冰间水道（sea ice lead）分布图，以及基于气旋追踪算法（Akperov等，2020）得到的气旋发生信息，该算法已被应用于逐6小时的ERA5（Hersbach等，2020）海平面气压场数据。该数据集的时间尺度为日尺度，覆盖2002年至2020年（其中冰间水道数据仅可获取11月至次年4月的资料），水平分辨率为12.5平方千米。本数据集旨在分析气旋过境背景下北极海冰的冰间水道形成过程。本数据集所采用的冰间水道数据源自ArcLeads产品（https://doi.org/10.1594/PANGAEA.955561），该产品由空间分辨率为1平方千米的中分辨率成像光谱仪（MODIS）热红外影像反演得到（Reiser等，2020）。