| Description: | The short_direct_normal (direct beam, NIP instrument) values are missing during this time
range due a broken signal wire. Problem was corrected on 2/6/2013
The short_direct_normal data are not recoverable. However, it can be derived using the
following relationship and applied to the good one minute data from the global and diffuse
instruments (the SIRS instrument handbook describes this in detail):
short_direct_normal(derived) = (down_short_hemisp - down_short_diffuse_hemisp)/cos(zenith
angle) |