NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 5

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).

这个数据集提供了基于被动微波数据的海冰浓度气候数据记录（Climate Data Record，CDR）。CDR算法的输出是基于规则的组合结果，融合了两种成熟算法的海冰浓度估算值：NASA Team（NT）算法（Cavalieri等人，1984）和NASA Bootstrap（BT）算法（Comiso，1986）。该CDR包含1978年10月25日至最新处理日期期间，南北极地区一致的每日和每月海冰浓度时间序列。所有数据均采用25公里×25公里的网格格式。

注：本数据集还提供近实时版本，以填补当前数据集更新时间与当前日期之间的空白。该版本数据集名为“被动微波海冰浓度近实时NOAA/NSIDC气候数据记录”（https://nsidc.org/data/g10016）。