Analytical determination of the regularization parameter in the retrieval of atmospheric vertical profiles.
Analytical determination of the regularization parameter in the retrieval of atmospheric vertical profiles.
复制标题
大气垂直廓线反演中正则化参数的解析确定
作者：
S. Ceccherini
在大气成分垂直剖面的反演中，经常使用正则化方法来改善解的条件。正则化减少了反演误差，导致垂直分辨率下降。人们通过正则化参数来调节正则化的强度来获得折衷。提出了一种新的确定正则化参数的解析方法。这种方法适用于需要无人值守程序的操作检索。将该方法与L曲线法进行了性能比较，结果表明，该方法在反演误差和垂直分辨率之间取得了较好的折衷。
In the retrieval of vertical profiles of atmospheric constituents, regularization methods are frequently used to improve the conditioning of the solution. The regularization reduces the retrieval errors and causes the vertical resolution to deteriorate. One obtains a trade-off by tuning the strength of the regularization by way of a regularization parameter. A new analytical method for determining the regularization parameter is presented. This method is suitable for operational retrievals, for which an unattended procedure is required. The performance of the new method is compared with that of the L-curve method, and the results show that a better trade-off between retrieval errors and vertical resolution is obtained.