with the following equation,
h = c
t
2
where c is the speed of light (c = 2.99
x 108 m/s). In principle, CL51 is able to detect three cloud
layers simultaneously, but if the cloud base is obscured due to precipitation or ground-based
fog, vertical visibility is reported. Information about fog and precipitation can also be derived
from the return signal as they attenuate the return signal from a cloud. In its
/media/vedurstofan-utgafa-2019/VI_2019_009.pdf