Research Summaries

Back Navy Atmospheric Measurements for EM Propagation Modeling

Fiscal Year 2015
Division Research & Sponsored Programs
Department Naval Research Program
Investigator(s) Frederickson, Paul A.
Sponsor NPS Naval Research Program (Navy)
Summary The ultimate goal of this project is to improve characterizations of the battlespace environment for electromagnetic (EM) system prediction tools. New and past measurements of the marine surface layer will be used to test, validate and improve models for characterizing near-surface refractivity and the evaporation duct, including: 1) evaporation duct models that are based on Monin-Obukhov similarity theory (MOST), and 2) vertical refractivity profile blending algorithms for merging surface layer refractivity profiles onto the bottom of numerical weather prediction (NWP) model upper-air refractivity profiles. This project will be conducted in close coordination with the Coupled Air Sea Processes and EM-ducting Research (CASPER) project and will use data collected from its associated field measurement campaigns, as well as data from other experiments, such as Wallops Island 2000, Trident Warrior 2013, Netherlands CWP 2014, Australia TAPS 2014, and CASPER East 2015, as the data sets become available. Tethersonde data will be used to characterize the near-surface vertical refractivity profile and surface meteorological measurements from research and buoys will be used as inputs to evaporation duct models. Whenever possible, actual electromagnetic propagation measurements will also be used in the validation analyses. Using combined data from multiple measurement campaigns the atmospheric models can be evaluated over a wide range of conditions and as a result it is expected that significant improvements to the models can be implemented.
Keywords
Publications Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal
Data Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal