Award Data

Stochastic parameterization of large scale models is becoming an important tool for evaluating climate predictability and for enabling accurate representation of effects of micro-scale and short time physics on long time climate statistics. The models currently used to evaluate climate risk do not incorporate these stochastic effects, but represent multi-year development and collaboration between ...

The objective of Phase II is to continue our efforts from the Phase I project and perform in-depth testing of technologies critical to achieving the required level of measurement performance. The Phase II project will involve the design of the NOAA water vapor profiling lidar and testing of component parts, seeking external sources of funding for the systems (for Phase III) and further creating a ...

A back-illuminated planar InGaAs photodiode tested to have 95% quantum effiiency (QE) at 1550 nm, area greater than 1 mm2, low capacitance (125 MHz) will be improved. Although the existing Phase I device exhibited bulk material dark current generation better than commercially available devices, the sidewall-generated dark current was found to dominate the noise equiva ...

The recent emergence of the Silicon Drift detector (SDD), for use in energy dispersive x-ray spectrometry (EDS), has made possible x-ray event streams with count rates as high as 1-10 Mcps. A problem with existing digital signal processing, as applied to SDDs, is the significant presence of coincidence peaks above the x-ray background. These coincidence peaks occur with amplitudes comparable to lo ...

Even today as a highly technical and advanced world civilization, the physiology of deep sea fish and invertebrates continues to remain mysterious and poorly known. Past specimen containers fail to either have the size or volume needed or lack the robustness for high pressure containment of in many cases, lack the repeatability necessary to ensure a reasonable lifetime of continuous use. The Tec ...

Voxtel has demonstrated efficient high-speed photon counting with thresholded linear-mode avalanche photodiode (APD) receivers using multi-gain-stage InGaAs/InAIAs APDs. In contrast to Geiger APDs, thresholded photon-counting linear APD receivers are thought not to suffer afterpulsing, and can support maximum count rates (MCR) up to 2 or 3 orders of magnitude faster than Geiger APDs. However, the ...

Phycotransgenics goal is to develop a vaccine delivery system using microalgae to reduce diseaseassociated costs for aquaculture. To accomplish this, we transformed Chlamydomonas, a single-cell algal species, with an antigen gene. Through our Phase 1 Program, we demonstrated that: 1) an antigen expressed in our algae can elicit an immune response in fish, and; 2) using our microalgal delivery syst ...

In-situ measurement of meteorological, atmospheric chemistry, and oceanic parameters for regional models would aid greatly in the understanding of critical processes and provide the necessary data for national policy decisions on significant environmental issues. three Dimensional Reinforced (3DR) membranes have the ability to offer a dramatic reduction in the required envelope mass for balloons d ...