AIRS/Aqua L3 Monthly Quantization in Physical Units (AIRS+AMSU+HSB) 5 degrees x 5 degrees V006 (AIRH3QPM) 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. The quantization products (QP) are distributional summaries derived from the Level-2 standard retrieval products (of swath type) to provide a more comprehensive set of statistical summaries than the traditional means and standard deviation. The QP products combine the Level 2 standard data parameters over grid cells of 5 x 5 deg spatial extent for temporal periods of a month. They preserve the multivariate distributional features of the original data and so provide a compressed data set that more accurately describes the disparate atmospheric states that is in the original Level-2 swath data set. The geophysical parameters are: Air Temperature and Water Vapor profiles (11 levels/layers), Cloud fraction (vertical distribution).

大气红外探测器（Atmospheric Infrared Sounder, AIRS）是搭载于第二代地球观测系统（Earth Observing System, EOS）极轨平台EOS Aqua上的光栅光谱仪（分辨率R=1200）。该仪器与先进微波探测单元（Advanced Microwave Sounding Unit, AMSU）及巴西湿度探测仪（Humidity Sounder for Brazil, HSB）共同组成了一套涵盖可见光、红外与微波传感器的创新性大气探测载荷组。量化产品（quantization products, QP）是从条带型Level-2标准反演产品中衍生出的分布统计概要，相较传统的均值与标准差方法，可提供更为全面的统计概要集合。QP产品将月度时间周期内、5°×5°空间格点上的Level-2标准数据参数进行整合，保留了原始数据的多变量分布特征，由此生成的压缩数据集能够更精准地描述原始Level-2条带数据集中涵盖的多样大气状态。该数据集包含的地球物理参数包括：气温与水汽廓线（共11层/高度层）、云量（垂直分布）。