NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4

This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. The CDR algorithm output is a rule-based combination of ice concentration estimates from two well-established algorithms: the NASA Team (NT) algorithm (Cavalieri et al. 1984) and NASA Bootstrap (BT) algorithm (Comiso 1986). The CDR is a consistent, daily and monthly time series of sea ice concentrations from 25 October 1978 through the most recent processing for both the north and south polar regions. All data are on a 25 km x 25 km grid. Note: A near-real-time version of this data set also exists to fill the gap between the time that this data set is updated through to the present. The data set is called the Near-Real-Time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration (https://nsidc.org/data/g10016).本数据集提供基于被动微波数据的海冰密集度气候数据记录（Climate Data Record，CDR）。CDR算法的输出为两种成熟算法的海冰密集度估算结果的规则融合：一是NASA Team（NT）算法（Cavalieri等，1984），二是NASA Bootstrap（BT）算法（Comiso，1986）。该CDR包含1978年10月25日起至最新处理时段的南北极海域连续日度、月度海冰密集度时间序列，所有数据均采用25 km×25 km的网格格式。 注：本数据集另有近实时版本，用于填补本数据集更新截止时间至当前的时间空白。该数据集命名为《近实时NOAA/NSIDC被动微波海冰密集度气候数据记录》（访问链接：https://nsidc.org/data/g10016）。