AIRS/Aqua L2 Support Retrieval (AIRS-only) V006 (AIRS2SUP) at GES DISC

The Atmospheric Infrared Sounder (AIRS) is a grating spectrometer (R = 1200) aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. In combination with the Advanced Microwave Sounding Unit (AMSU) and the Humidity Sounder for Brazil (HSB), AIRS constitutes an innovative atmospheric sounding group of visible, infrared, and microwave sensors. This product is similar to AIRX2SUP. It is a new product produced using AIRS IR only because the radiometric noise in AMSU channel 4 started to increase significantly (since June 2007). The Support Product includes higher vertical resolution profiles of the quantities found in the Standard Product, plus intermediate outputs (e.g., microwave-only retrieval), research products such as the abundance of trace gases, and detailed quality assessment information. The Support Product profiles contain 100 levels between 1100 and .016 mb; this higher resolution simplifies the generation of radiances using forward models, though the vertical information content is no greater than that in the Standard Product profiles. The intended users of the Support Product are researchers interested in generating forward radiance or in examining research products, and the AIRS algorithm development team. The Support Product is generated at all locations as Standard Products. An AIRS granule has been set as 6 minutes of data, 30 footprints cross track by 45 lines along track. There are 240 granules per day, with an orbit repeat cycle of approximately 16 day.

大气红外探测器（AIRS）是一种配备有1200倍光谱分辨率的衍射光栅光谱仪，搭载于地球观测系统（EOS）的第二代极地轨道平台EOS Aqua上。结合先进的微波探测单元（AMSU）和巴西湿度探测器（HSB），AIRS构成了一个创新的可见光、红外和微波大气探测组合。本产品与AIRX2SUP类似，但系采用仅AIRS红外波段生产的新型产品。这是由于AMSU通道4的辐射噪声自2007年6月起显著增加。辅助产品包含标准产品中发现的量度的高垂直分辨率剖面，以及中间输出（例如，仅微波检索）、如痕量气体丰度等研究产品，以及详细的质量评估信息。辅助产品剖面包含介于1100至0.016毫巴之间的100个级别；这种更高的分辨率简化了前向辐射率模型的生成，尽管垂直信息含量并不超过标准产品剖面。辅助产品的目标用户为有兴趣生成前向辐射或审查研究产品的科研人员，以及AIRS算法开发团队。辅助产品在所有位置均以标准产品的形式生成。AIRS数据块被设定为6分钟的数据，横跨30个足迹，沿轨道45行。每天有240个数据块，轨道重复周期约为16天。