University of Connecticut

Events Calendar

Condensed Matter Physics Seminar

Tuesday, October 24, 2017
2:00pm – 3:00pm

Storrs Campus
Physics Building, P121

Douglas Pease, University of Connecticut

Improvements to the online program “Modtran Infrared Light in the Atmosphere"

The online program “Modtran Infrared Light in the Atmosphere” (MILIA) is a free teaching tool used for basic Atmospheric Physics or Environmental Science. MILIA is hosted by the University of Chicago. It gives outgoing long wavelength radiant flux (OLR) in watt/m2 for various settings of greenhouse gas (GHG) concentrations, virtual observer altitude, Earth surface temperature, types of atmospheres, and types of cloud settings. Before May 17, 2017, the underlying Planck Distribution of MILIA was limited to a range between 100 and 1500 wavenumbers. After May 17, 2017 the underlying Planck Distribution was expanded to lie between 2 and 2200 wavenumbers. This improvement resulted in more accurate values for several important quantities such as the cloud free OLR and the OLR with no GHG assuming an Earth surface temperature of 255 K. In addition a method has recently been developed for obtaining the OLR assuming an average Earth surface emissivity of one, given the OLR resulting from the present default emissivity of 0.971.


Prof. J. Hancock

Physics Department (primary)

Control Panel