Downwelling Spectral Solar Irradiance and IR Radiance Measurements ATMS 360 Spring 2008 Preliminary Results
IMAGES
IMAGES HALO
Radiance: Watts / (m2 Sr)
Irradiance and Radiance
5 a.m. local time Sounding Reno
5 p.m. local time Sounding Reno
FTIR Radiance
FTIR Radiance
FTIR Radiance: Atmospheric IR Window 13 microns 8 microns
Radiance in the Window Region Time Condition Window Region Irradiance (W / m2) 07:13 Clear 28.3 13:21 Cirrus 41.8 15:30 Altocumulus and Cirrus 90.1
DEFINITION OF THE BRIGHTNESS TEMPERATURE TB Measured Radiance at wavenumber v = Theoretical Radiance of a Black Body at temperature TB
FTIR Brightness Temperatures
Normalized Solar Irradiance
Water Absorption Coefficient http://www.lsbu.ac.uk/water/vibrat.html