GHRSST Level 2P Western Pacific Regional Skin Sea Surface Temperature from the Multifunctional Transport Satellite 2 (MTSAT-2) (GDS versions 1 and 2)

Multi-functional Transport Satellites (MTSAT) are a series of geostationary weather satellites operated by the Japan Meteorological Agency (JMA). MTSAT carries an aeronautical mission to assist air navigation, plus a meteorological mission to provide imagery over the Asia-Pacific region for the hemisphere centered on 140 East. The meteorological mission includes an imager giving nominal hourly full Earth disk images in five spectral bands (one visible, four infrared). MTSAT are spin stabilized satellites. With this system images are built up by scanning with a mirror that is tilted in small successive steps from the north pole to south pole at a rate such that on each rotation of the satellite an adjacent strip of the Earth is scanned. It takes about 25 minutes to scan the full Earth's disk. This builds a picture 10,000 pixels for the visible images (1.25 km resolution) and 2,500 pixels (4 km resolution) for the infrared images. The MTSAT-2 (also known as Himawari 7) and its radiometer (MTSAT-2 Imager) was successfully launched on 18 February 2006. For this Group for High Resolution Sea Surface Temperature (GHRSST) dataset, skin sea surface temperature (SST) measurements are calculated from the IR channels of the MTSAT-2 Imager full resolution data in satellite projection on a hourly basis by using Bayesian Cloud Mask algorithm at the Office of Satellite and Product Operations (OSPO). L2P datasets including Single Sensor Error Statistics (SSES) are then derived following the GHRSST Data Processing Specification (GDS) version 2.0.

多功能运输卫星（Multi-functional Transport Satellites，MTSAT）是日本气象厅（Japan Meteorological Agency，JMA）运营的一系列地球静止气象卫星。MTSAT兼具两项核心任务：一是用于辅助航空导航的航空任务，二是面向以东经140°为中心的半球、为亚太区域提供遥感影像的气象观测任务。其气象观测载荷搭载一台成像仪，可生成五个光谱波段（1个可见光波段、4个红外波段）的标称每小时全圆盘地球影像。MTSAT均为自旋稳定卫星，该系统通过一面以极小步长从北极向南极依次倾斜的反射镜完成扫描成像：卫星每自转一周，便会扫过地球的一条相邻条带，完成整个地球圆盘的扫描约需25分钟。其中可见光影像分辨率为1.25千米，对应10000像素；红外影像分辨率为4千米，对应2500像素。MTSAT-2（又名向日葵7号（Himawari 7））及其辐射计（MTSAT-2成像仪）已于2006年2月18日成功发射。针对高分辨率海表温度工作组（Group for High Resolution Sea Surface Temperature，GHRSST）的本数据集，卫星与产品运营办公室（Office of Satellite and Product Operations，OSPO）采用贝叶斯云掩膜算法（Bayesian Cloud Mask algorithm），基于MTSAT-2成像仪的全分辨率卫星投影红外通道数据，按小时计算得到海表皮肤温度（skin sea surface temperature，SST）测量值。随后，依据GHRSST数据处理规范（GHRSST Data Processing Specification，GDS）2.0版本，生成包含单传感器误差统计（Single Sensor Error Statistics，SSES）在内的L2P数据集。