Derived Products


Apparent Transmission Time Series

The apparent transmission, is derived from broadband (0.2 to 4.0µm) direct solar irradiance observations. Data are for clear-sky mornings between solar elevations of 11.3 and 30 degrees (Ellis and Pueschel, 1971).

Ellis, H. T. and Pueschel, R. F. 1971. Solar radiation: absence of air pollution trends at Mauna Loa, Science, 172, 845-846.