National Oceanic and Atmospheric Administration (NOAA) Climate Data Record (CDR) of Northern Hemisphere (NH) Snow Cover Extent (SCE), Version 1, 1966-present

This National Oceanic and Atmospheric Administration (NOAA) Climate Data Record (CDR) is a record for the Northern Hemisphere (NH) Snow Cover Extent (SCE) spanning from October 4, 1966 to present, updated monthly after the 10th of each month. Data prior to June 1999 in the NH SCE CDR are based on satellite-derived maps of NH SCE produced weekly by trained NOAA meteorologists. In June 1999 weekly NOAA NH SCE maps ceased production and were replaced by daily SCE output from the Interactive Multisensor Snow and Ice Mapping System (IMS). The weekly SCE maps are digitized to an 88x88 (cells) Cartesian grid laid over an NH polar stereographic projection. Each grid cell in the NH SCE CDR has a binary value, indicating snow covered or snow free. The NH SCE CDR has been used in international assessments of climate variability and change, and in investigations regarding the role of snow cover in the climate system. Mapping accuracy is such that this product is considered suitable for continental-scale climate studies. The data are updated monthly in netCDF file format with variables including SCE and National Meteorological Center (NMC) grid (88x88 cell) coordinates.
Robinson, David A.; Estilow, Thomas W.; and NOAA CDR Program (2012): NOAA Climate Data Record (CDR) of Northern Hemisphere (NH) Snow Cover Extent (SCE), Version 1. NOAA National Centers for Environmental Information. doi:10.7289/V5N014G9 [2023-12-12].

美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）气候数据记录（Climate Data Record, CDR）是北半球（Northern Hemisphere, NH）积雪覆盖范围（Snow Cover Extent, SCE）的记录，时间跨度从1966年10月4日至今，每月10日后更新一次。

NH SCE CDR中1999年6月之前的数据基于由训练有素的NOAA气象学家每周生成的卫星衍生NH SCE地图。

1999年6月，NOAA每周NH SCE地图停止制作，取而代之的是交互式多传感器冰雪制图系统（Interactive Multisensor Snow and Ice Mapping System, IMS）的每日SCE输出。

每周SCE地图被数字化为覆盖NH极地立体投影的88×88（单元格）笛卡尔网格。

NH SCE CDR中的每个网格单元具有二进制值，指示积雪覆盖或无雪状态。

NH SCE CDR已用于气候变化与变率的国际评估，以及关于积雪覆盖在气候系统中作用的研究。

其制图精度使得该产品被认为适用于大陆尺度的气候研究。

数据每月以netCDF文件格式更新，包含的变量有SCE和国家气象中心（National Meteorological Center, NMC）网格（88×88单元格）坐标。

Robinson, David A.; Estilow, Thomas W.; 及NOAA CDR计划（2012）：北半球（NH）积雪覆盖范围（SCE）的NOAA气候数据记录（CDR），版本1。NOAA国家环境信息中心。doi:10.7289/V5N014G9 [2023-12-12]。