List

Ozone is arguably the most important trace gas in the atmosphere, and improved monitoring of ozone throughout the atmosphere is essential. This Phase 2 project continues the development of a complete, automated system for measuring ozone from on board commercial aircraft. There is already one program within NOAA, CAAMP (Commercial Aircraft Atmospheric Measurement Program), for measuring a variety ...

In our Phase 1 work we were able to replicate and build on recent results at NIST with superconducting transition (SCT) thermometers, which suggested that dramatic improvements may be achieved in detectivity and range of application, of cryogenic electrical substitution radiometers. Cryo-ESR's are widely used as the most accurate absolute standards of radiative flux and irradiance. In Phase 2, we ...

Development of an optical water level sensor is proposed to solve some of the problems and limitations of current sounding tube/protective well acoustic sensors. By using light instead of sound, temperature gradient effects on the measurement are obviated. Furthermore, the proposed system eliminates the need for a sounding tube, protective well and associated temperature sensors, and does not requ ...

Lidar systems offer considerable promise for the acquisition of a variety of atmospheric variables with very high spatial and temporal resolution from airborne platforms. Ground-based lidar systems have been demonstrated that measure aerosols, water vapor, and ozone, and airborne windsensing lidar have been flown on several military aircraft. The growing number of commercial airliners, however, of ...

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The objective of this research project is the development of an Autonomous Microbial Sampler (AMS) that will obtain uncontaminated and exogenous DNA-free microbial samples from deep-sea hydrothermal vents and other aquatic ecosystems. Sampling with the AMS may be conducted using manned submersibles, Remotely Operated Vehicles (ROV), Autonomous Underwater Vehicles (AUV) or during hydrocast operatio ...

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This project develops and demonstrates an innovative and economic technology that uses ultrasonic energy to destroy organisms in a ship ballast system, thereby minimizing impact from alien species introduced from shipping. Phase 1 results successfully showed that organisms were rapidly destroyed by ultrasound at various frequencies and power densities. Although the mechanism of destruction in an u ...