The results show that the detectable stellar magnitude limits linearly increase with observing height and solarzenithangle.
结果表明：可探测星等极限值随观测高度和太阳天顶角的增加接近线性增加；
2
Transmission of Solar Radiation by Clouds over Snow and Ice Surfaces: a Parameterization in Terms of Optical Depth, SolarZenithAngle, and Surface Albedo.
云和冰地表云对太阳辐射的传输：用光学厚度，太阳高度角和地表反照率参数化。
3
The reverse time of the crest motion depends on the smallest zenithAngle and on solar cycle.