ADVANCED MICROWAVE SOUNDING UNIT-A (AMSU-A) SWATH FROM NOAA-15

AMSU-A, the Advanced Microwave Sounding Unit, is a 15-channel passive microwave radiometer used to profile atmospheric temperature and moisture from the earth's surface to ~45 km (3 millibars). All orbits beginning in the day (00:00:00 - 23:59:59 UTC) are stored in one daily HDF-EOS file. Each file contains 15 (channel) arrays, as well as corresponding latitude, longitude, and time. AMSU flies on the National Oceanic and Atmospheric Administration (NOAA) polar orbiting spacecraft as part of the National Polar-orbiting Operational Environmental Satellite System (NPOESS). NOAA-15 was the first spacecraft to fly AMSU. Launched on 13 May 1998, NOAA-15 is in a sun synchronous near polar orbit.

AMSU-A，即高级微波 sounding 单元，是一种15通道被动微波辐射计，用于从地球表面至约45公里（3毫巴）的高度范围内对大气温度和湿度进行廓线测量。所有在白天（00:00:00 - 23:59:59 UTC）开始的轨道数据均存储于单个每日 HDF-EOS 文件中。每个文件包含15个（通道）数组，以及相应的纬度、经度和时间信息。AMSU 作为国家极地轨道运行环境卫星系统（NPOESS）的一部分，搭载于美国国家海洋与大气管理局（NOAA）的极地轨道卫星上。NOAA-15 是首颗搭载 AMSU 的航天器。发射于1998年5月13日，NOAA-15 航天器运行在太阳同步近极地轨道。