Further Insights into the Use of the Split-Window Covariance Technique for Precipitable Water Retrieval
✍ Scribed by C Ottlé; C François
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 121 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0034-4257
No coin nor oath required. For personal study only.
✦ Synopsis
This article is the response to Barton and Prata's article ference in the split-window channels is in first approximation, linearly related to total atmospheric water vapor published in the same issue of this journal. Our purpose is to describe the conditions of use of the split-window content. Sobrino et al. (1994) showed that the mean value over a large number of pixels obtained by least covariance-variance ratio technique. The methodology is square analysis is equal to the covariance-variance ratio first presented and the ways to apply it correctly are inof the brightness temperatures. vestigated. ©Elsevier Science Inc., 1999 In our article (Ottle ´et al., 1997), we tested the technique over two regions: over ocean in the Azores region using ATSR data, and over land pixels using AVHRR and