SMAP L1C Radiometer Half-Orbit 36 km EASE-Grid Brightness Temperatures, Version 6

This Level-1C (L1C) product contains calibrated and geolocated brightness temperatures acquired by the Soil Moisture Active Passive (SMAP) radiometer during 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes. This product is derived from SMAP L-band Level-1B time-ordered brightness temperatures resampled to an Earth-fixed, 36 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0) in three projections: global cylindrical, Northern Hemisphere azimuthal, and Southern Hemisphere azimuthal. This L1C product is a gridded version of the SMAP time-ordered Level-1B radiometer brightness temperature product.本L1C（Level-1C）级产品包含土壤湿度主动被动（Soil Moisture Active Passive, SMAP）辐射计在早6时降轨半轨过境与晚6时升轨半轨过境时段获取的经校准与地理定位的亮温数据。该产品源自SMAP L波段L1B级时序亮温数据，已被重采样至地固坐标系下的36公里等面积可扩展地球网格2.0版（Equal-Area Scalable Earth Grid 2.0, EASE-Grid 2.0），采用三种投影方式：全球圆柱投影、北半球方位投影与南半球方位投影。本L1C级产品为SMAP时序L1B级辐射计亮温产品的网格化版本。