Improved Prediction and Characterization of Contrails and Optically-Thin Cirrus
Abstract
This report summarizes research and results that pertain to AFOSR agreement no. F49620-96-C-0024. The aim of this research program has been to improve prediction of aircraft contrail and cirrus cloud formation, and to improve understanding of their optical and physical properties. Toward this end, the investigators have used analysis of data from research aircraft, balloon-borne ice crystal replicator sondes, and radiosonde relative humidity measurements, as well as theoretical and numerical modeling techniques. The five categories of research covered in this report are: (1) Improving Vaisala RS80-A radiosonde relative humidity measurements; (2) Vertical distribution of cirrus microphysical and optical properties; (3) Relative humidity conditions for the formation of cirrus and contrails; (4) Variability of cirrus microphysical properties; and (5) Improved theory of contrail formation Research findings in each of these five categories resulted in at least one publication whose full or partial sponsorship by the AFOSR was acknowledged. The journal publications provide an in-depth discussion of the research conducted; this final report summarizes the findings.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 22, 1999
- Accession Number
- ADA376290
Entities
People
- Andrew J. Heymsfield
- Larry Miloshevich
Organizations
- National Center for Atmospheric Research