NRT AMSR2 Unified L3 Daily 6.25 km Polar Gridded 89 GHz Brightness Temperatures V4

The Advanced Microwave Scanning Radiometer 2 (AMSR2) instrument on the Global Change Observation Mission - Water 1 (GCOM-W1) provides global passive microwave measurements of terrestrial, oceanic, and atmospheric parameters for the investigation of global water and energy cycles. Near real-time (NRT) products are generated within 3 hours of the last observations in the file, by the Land Atmosphere Near real-time Capability for EOS (LANCE) at the AMSR Science Investigator-led Processing System (AMSR SIPS), which is collocated with the Global Hydrology Resource Center (GHRC) DAAC. The NRT AMSR2 Unified L3 Daily 6.25 km Polar Gridded 89 GHz Brightness Temperatures, Version 4 uses as input the resampled brightness temperature (Level-1R) data provided by the Japanese Aerospace Exploration Agency (JAXA). The Version 4 dataset uses the AMSR-U2 product generation algorithm with slight modifications for NRT product generation, same algorithm used to generation the standard, science quality, data that is available at the NSIDC DAAC. This Level-3 gridded product includes brightness temperatures at 89.0 GHz. Data are mapped to a polar stereographic grid at 6.25 km spatial resolution. This product is an intermediate product during processing of LANCE AMSR2 Level-3 sea ice products at 12.5 km and 25 km resolution. Data are stored in HDF-EOS5/netCDF-CF format and are available via HTTP from the EOSDIS LANCE system at https://lance.nsstc.nasa.gov/amsr2-science/data/level3/seaice6. If data latency is not a primary concern, please consider using science quality products. Science products are created using the best available ancillary, calibration and ephemeris information. Science quality products are an internally consistent, well-calibrated record of the Earth's geophysical properties to support science. These standard product, science quality, are available at the NSIDC DAAC: https://nsidc.org/

全球变化观测任务-水1（GCOM-W1）上的高级微波扫描辐射计2（AMSR2）仪器，为全球陆地、海洋和大气参数提供被动微波测量，以研究全球水循环和能量循环。该近实时（NRT）产品在文件中最后观测后3小时内由EOS陆地大气近实时能力系统（LANCE）在AMSR科学调查员主导处理系统（AMSR SIPS）生成，该系统与全球水文学资源中心（GHRC）DAAC同地设置。NRT AMSR2统一L3每日6.25公里极地网格89 GHz亮度温度数据集版本4，以日本宇宙航空研究开发机构（JAXA）提供的重采样亮度温度（1R级）数据为输入。版本4数据集采用AMSR-U2产品生成算法，稍作修改以生成NRT产品，与生成可在NSIDC DAAC获取的标准、科学质量数据的算法相同。此L3网格产品包括89.0 GHz的亮度温度。数据映射到6.25公里空间分辨率的极地投影网格上。此产品是处理LANCE AMSR2 L3海冰产品（12.5公里和25公里分辨率）过程中的中间产品。数据以HDF-EOS5/netCDF-CF格式存储，并通过EOSDIS LANCE系统从https://lance.nsstc.nasa.gov/amsr2-science/data/level3/seaice6提供。如非主要关注数据延迟，请考虑使用科学质量产品。科学产品采用最佳可用辅助、校准和恒星视位置信息创建。科学质量产品是地球地球物理性质的一致、高精度记录，以支持科学研究。这些标准产品、科学质量产品可在NSIDC DAAC获取：https://nsidc.org/