Mt Graham Observatory

Vertical Scales of Turbulence at the Mt. Wilson Observatory

The vertical scales of turbulence at the Mt. Wilson observatory are inferred from data from the University of Califcmnia at Berkeley Infrared Spatial Interferometer (1S1), by modeling path length fluctuations observed in the interferometric paths to celestial objects and those in instrumental ground-based paths. The correlations between the stellar and ground-based path length fluctuations and ...

GIs-Based Habitat Modeling Using Logistic Multiple Regression: A Study of the Mt. Graham Red Squirrel

Multivariate statistical techniques were applied to the development of habitat suitability models for the Mt. Graham red squirrel, an endangered species. A digital map database and a Geographic Information System (GIS) were used to support the analysis and provide inputs for two logistic multiple regression models. The models attempted to predict squirrel presence or absence, the dichotomous de...

Annual Cycles in Body Mass and Reproduction of Endangered Mt. Graham Red Squirrels

Annual cycles in life-history traits often are interpreted as adaptations. The Mt. Graham red squirrel (Tamiasciurus hudsonicus grahamensis) is an endangered species isolated in the Pinaleno Mountains of Arizona (United States) at the southernmost range terminus where the ecology is poorly known. I monitored annual cycles of reproduction and body mass in male and female Mt. Graham red squirrels...

Carbon Dioxide in the Free Troposphere and Boundary Layer at the Mt. Bachelor Observatory

We use data for 2012–2014 from the Mt. Bachelor Observatory (MBO) in central Oregon to understand variations in carbon dioxide (CO2) in the free troposphere (FT) and boundary layer (BL). The goals of this analysis are to identify and examine CO2 in FT and BL air, events due to wildfires, the role of transport patterns, and the variation of CO2 seasonally. For all seasons, we found that FT air h...

Graham Lusk *