Fiscal Year	2019
Division	Graduate School of Engineering & Applied Science
Department	Meteorology
Investigator(s)	Wauer, Benjamin J.
Sponsor	Naval Information Warfare Center, Pacific (Navy)
Summary	It is understood that atmospheric turbulence results in fluctuations in the received power of an electro-optical (EO) link. The atmospheric variable relevant to the magnitude of optical turbulence is the structure function parameter (Cn2) which can be quantified through optical scintillation measurements or derived from measurements of high-rate sampled atmospheric turbulence. In addition to this, Cn2 can be estimated using models, some of which are based on surface layer similarity theory. However, the near shore coastal atmospheric boundary layer (CABL) provides an optically heterogeneous and complex turbulent environment that can be difficult to model accurately. The Coupled Air-Sea Processes and Electromagnetic ducting Research (CASPER) West and Santa Ana Winds Study (SAWS) campaigns provide a coherent near shore data set for observation of these CABL features relevant to optical turbulence and can be used to validate operational models. Additionally, in the CABL environment an approach for deriving Cn2 from speed of sound measurements of a sonic anemometer will be explored. A better understanding of optical signal behavior in the CABL will provide increased exploitation of the environment by current and future EO systems operating in littoral regions.
Keywords	CASPER-West Coastal Atmospheric Boundary Layer OPTICAL TURBULENCE Refractive Index Structure Parameter
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