Beyond the University: An Initiative for Continuing Engagement among Alumni

In an effort to leverage students’ positive community engagement experiences as they transition to and become alumni, Portland State University (PSU) embarked on a pilot “Continuing Engagement Program.” This article provides a rationale for this effort, an overview of the programmatic elements, lessons learned, and future engagement strategies. The authors situate the Community Engagement Program (CEP) in the current alumni engagement literature, share findings from the PSU program, and hope to inspire additional creative thinking and action to support alumni and other community members’ persistent engagement for positive community change

Inadvertent Weather Modification and Los Angeles Smog

The potential mechanisms for inadvertent weather modification by anthropogenic aerosols are reviewed briefly. Within this framework, limited measurements of cloud condensation nuclei and ice nuclei taken during the 1969 Pasadena experiment are discussed. The condensation nuclei observations were made with an MRI thermal diffusion counter and the ice nuclei were made using a Millipore filter technique. The results suggest that the cloud condensation nuclei counts are in the range of 10^3 cm^(-3) at 0.5% water vapor supersaturation, and they increase during the day in rough correspondence with the second moment of the aerosol distribution. On the other hand, the ice nuclei counts are in the range of 200 m^(-3) at 18°C, and appear to decrease during the day. Such diurnal behavior may be related to the "poisoning" of otherwise active nuclei in the presence of organic material in the Los Angeles atmosphere