Question 6 4 pts this question addresses the completeness of the modtran model. configure modtran to have default parameters, except 1) use the 1976 us standard atmosphere. 2) change the altitude of the sensor to okm (i. e. bring down it to the surface) but keep it looking down to see the blackbody curve of the earth surface (ie. no atmospheric absorption) the graph will follow the blackbody radiation curve for the earth surface temperature. the surface temperature and earthlight power density (the area under the curve) are shown below the input window. modtran labels the earthlight intensity (also known as a power density) as an "upward ir heat flux." note that power density of earthlight given by modtran is less than that given by the stefan boltzmann law for the earth surface temperature used by modtran because radiation at wavenumbers less than 1 cm 1 and greater than 2200 cm 1 are not included in the modtran calculation. what percent of the power density of the earthlight from earth's surface is included in the model, that is, in the range of 1 cm21 to 2200 cm1?