1. Downwelling Spectral Solar Irradiance and IR Radiance Measurements ATMS 360 Spring Preliminary Results

2. IMAGES

3. IMAGES
HALO

4. Radiance: Watts / (m2 Sr)

5. Irradiance and Radiance

6. 5 a.m. local time Sounding Reno

7. 5 p.m. local time Sounding Reno

8. FTIR Radiance

9. FTIR Radiance

10. FTIR Radiance: Atmospheric IR Window
13 microns
8 microns

11. 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

12. DEFINITION OF THE BRIGHTNESS TEMPERATURE TB
Measured Radiance at wavenumber v =
Theoretical Radiance of a Black Body at temperature TB

13. FTIR Brightness Temperatures

14. Normalized Solar Irradiance

15. Water Absorption Coefficient