We examine the small-scale dynamics of black hole accretion disks in which radiation pressure exceeds gas pressure. Local patches of disk are modeled by numerically integrating the equations of radiation MHD in the flux-limited diffusion approximation. The shearing-box approximation is used, and the vertical component of gravity is neglected. Magneto-rotational instability (MRI) leads to turbul...

Net radiation is not a climatic variable hence observed. Tedious numerical computations have been shown to characterize the methods used in its determination using data on some variables. This study aims at generating monthly synthetic net Ibadan, Benue and Kano, Nigeria Autoregressive Integrated Moving Average (ARIMA) model. performed Autocorrelation Function (ACF) Partial (PACF) analysis dete...

Leaf gas exchange, temperature, and incident radiation were measured in situ for 20 mature trees of 12 deciduous species spanning a range of heights from 7.9 to 30.1 m and growing in the southern Appalachian Mountains. Air temperature, water vapor pressure, total radiation, photosynthetically active radiation, and carbon dioxide concentration were also measured. Estimated mean, light-saturated ...