Thermodynamic and cloud parameter retrieval using infrared spectral data
Thermodynamic and cloud parameter retrieval using infrared spectral data
复制标题
使用红外光谱数据进行热力学和云参数检索
DOI：
10.1029/2005gl023211
复制
发表时间：
2005
影响因子：
5.2
通讯作者：
S. Mango
中科院分区：
文献类型：
--
作者：
D. Zhou;W. Smith;X. Liu;A. Larar;Hung;Jun Li;M. McGill;S. Mango
从接近最低点的观测获得的高分辨率红外辐射光谱提供了大气、地面和云的属性信息。在大气廓线和云参数反演中，采用了考虑云效应的快速辐射传输模式。给出了反演算法及其在NPOESS机载声纳干涉仪(NAST-I)最新外场实验数据中的应用。讨论了云层特性对反演精度的影响。结果表明，在光学薄云下可以实现相对准确的温度和水汽反演。对于光学厚云，得到了精确的温度和水汽廓线，直至云顶。对于光学薄云和厚云情况，都可以以大约1.0公里的精度反演云顶高度。给出了最近的大西洋-THORPEX区域战役(ATReC)的初步NAST-I反演结果，并将其与从水滴探空仪和指向低点的云物理激光雷达(CPL)获得的一致观测结果进行了比较。
High‐resolution infrared radiance spectra obtained from near nadir observations provide atmospheric, surface, and cloud property information. A fast radiative transfer model, including cloud effects, is used for atmospheric profile and cloud parameter retrieval. The retrieval algorithm is presented along with its application to recent field experiment data from the NPOESS Airborne Sounder Testbed – Interferometer (NAST‐I). The retrieval accuracy dependence on cloud properties is discussed. It is shown that relatively accurate temperature and moisture retrievals can be achieved below optically thin clouds. For optically thick clouds, accurate temperature and moisture profiles down to cloud top level are obtained. For both optically thin and thick cloud situations, the cloud top height can be retrieved with an accuracy of approximately 1.0 km. Preliminary NAST‐I retrieval results from the recent Atlantic‐THORPEX Regional Campaign (ATReC) are presented and compared with coincident observations obtained from dropsondes and the nadir‐pointing Cloud Physics Lidar (CPL).