Prediction of ice duration along large rivers

Contains two files: shp files: contain river centerline points and its associated downstream distance: * "name": name of the river * "dsDistKm": downstream distance in km * "dsPointId": unique id for each centerline point for a river, together with river name uniquely identify a point in the dataset "river_ice_duration_winter_temperature" (csv file)—contains river ice duration and winter mean temperature prediction: * "name" : name of the river * "dsPointId": unique id for each centerline point for a river, together with river name uniquely identify a point in the dataset * "year": year (from 2019–2099) * "tasmean": winter (Dec, Jan, and Feb) mean surface air temperature (from ERA5, in degree Celsius) * "iceDuration": ice duration in days Temperature and ice duration were based on CESM1-BGC under RCP8.5.

本数据集包含两类文件：其一为SHP文件（Shapefile），用于存储河流中心线点位及其关联的下游距离信息，包含如下字段：
- "name"：河流名称；
- "dsDistKm"：以千米为单位的下游距离；
- "dsPointId"：单条河流中心线点位的唯一标识符，与河流名称组合后，可唯一标识本数据集中的任意点位。
其二为名为"river_ice_duration_winter_temperature"的CSV文件，存储河流冰期时长与冬季平均气温预测数据，包含如下字段：
- "name"：河流名称；
- "dsPointId"：单条河流中心线点位的唯一标识符，与河流名称组合后，可唯一标识本数据集中的任意点位；
- "year"：年份，取值范围为2019年至2099年；
- "tasmean"：冬季（12月、1月、2月）平均地表气温，数据源自ERA5，单位为摄氏度；
- "iceDuration"：以天为单位的冰期时长。
气温与冰期时长数据均基于RCP8.5情景下的CESM1-BGC模式生成。