The PRPI Director continues his research program at the Arecibo Observatory, probing the climatology, dynamics, and chemistry of the upper mesosphere and lower thermosphere (80-110 km altitude) using resonance Doppler lidar. Among the areas of interest are MLT temperature climatology, the nature of sporadic metal layers, and metals in the thermosphere (>110 km altitude).
PRPI has received the following research grants:
- NSF-1126123 MRI-Acquisition: Puerto Rico Atmospheric Major Research Laser Instrumentation Program (PR-LASER) This grant is to acquire a new transmitter laser system for the Arecibo Observatory resonance Doppler lidar. Period of activity 8/2011-7/2013.
- MIT Draper Lab URAD Contract entitled: "Development of remote sensing instrument derived from Draper intertial systems optics expertise".
Friedman, J. S., X. Chu, C. Brum, and X. Lu (2013), Observation of a thermospheric descending layer of neutral K over Arecibo, J. Atmos. Solar-Terr. Phys., doi:10.1016/j.jastp.2013.03.002. (http://www.sciencedirect.com/science/article/pii/S1364682613000783)