Climate Change: Anticipated Effects on High-Energy Laser Weapon Systems in Maritime Environments
NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OCEANOGRAPHY
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This study quantifies the potential impacts on ship defense high energy laser HEL performance due to atmospheric effects in the marine boundary layer driven by recent observations and analysis of worldwide sea surface temperatures SSTs. The atmospheric effects are defined using the worldwide probabilistic climatic database available in the High Energy Laser End-to-End Operational Simulation HELEEOS model, which includes an SST database for the period 1854-1997. A more recent worldwide sea surface temperature database was provided by the Naval Postgraduate School for the period 1990-2008. Mean differences and trends between the two SST databases are used to deduce possible climate change impacts on simulated maritime HEL engagements. The anticipated effects on HEL propagation performance is assessed at an operating wavelength of 1.0642 micron across the worlds oceans and mapped onto a 1 deg x 1 deg grid. The scenario evaluated is near surface and nearly horizontal over a range of 5000 m in which anticipated clear-air maritime aerosols occur. Summer and winter scenarios are considered. In addition to realistic vertical profiles of molecular and aerosol absorption and scattering, correlated optical turbulence profiles in probabilistic percentile format are used.
- Lasers and Masers