An Assessment of the Potential for Temperature and Moisture Retrievals from SSH-1 (Special Sensor H-1) Radiances.
Abstract
Several aspects of the Special Sensor H (SSH-1) infrared sounding problem are addressed. These aspects relate to the objective of assessing the current temperature and moisture retrieval capabilities from real SSH-1 radiances. The outcome of this will be the improvement of the retrievals, especially with respect to moisture information. A second goal is the improvement of the cloud detection and cloud elimination problems. Radiance noise levels are statistically estimated and are found in some cases to be larger than those expected based on pre-flight testing but are of the same order of magnitude as the predicted sensitivities. These results signal that the SSH-1 instruments were performing roughly as expected. The lack of moisture retrieval capability is then either due to the improper selection of channels or their improper use in the retrieval process. Of interest is that eigenvector analysis shows that within the 15 CO2 and H2O channels there are only seven significantly independent pieces of information. A single field-of-view technique using the two window channels which will be available on SSH-2 shows the most promise at cloud detection. The results of applying a simple regression retrieval scheme to obtain temperatures and moisture are found to be comparable to results noted by others. Computing expense and time limitations must also lead to judicial selection of SSH channels for input a simple regression technique.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1982
- Accession Number
- ADA147643
Entities
People
- D. W. Hillger
- S. Q. Kidder
- T. H. Vonder Haar
Organizations
- Colorado State University