Atmospheric pressure decreases exponentially as altitude increases. This decrease is due to the decreasing gravity and the fact that there is less overlying air pressing downward. The barometric pressure equation shows this: {eq}P_{h}=P_{0}e^{\frac{-mgh}{kT}} {/eq} A barometer measures ...
Most of clouds and aerosol layers, located below this altitude range act as attenuators on Cherenkov light from the whole shower or part of it, resulting in a decrease of the trigger rate [114]. Whereas small clouds pass through the field of view of the telescope and reduce the trigger ...
Different parameters were used as the variable of the altitude correction equation. After comparing and discussing the results obtained from these equations, it was concluded that the calculation result is the closest to the actual data when m is taken as 0.137L+1.161 (L refers to the length ...
In the homosphere each gas exerts a partial pressure, the product of the total atmospheric pressure and the concentration of the gas. Thus as oxygen represents about 21% of the composite gases, the partial pressure of oxygen is about 21% of the atmospheric pressure at any altitude within the...
E.5.1. At high altitude, ozone decreases according to the atmospheric density. At low altitude however, the photolysis rate for oxygen goes rapidly to negligible values cutting the source of odd oxygen and consequently reduces the ozone formation. Fig. E.5.1 Qualitative illustration of the ...
The larger heat storage fraction reflects the presence of an atmosphere and is a consequence of a much higher surface thermal conductivity on Earth due to air pressure. Note that increasing the albedo from 0.131 to 0.294 only partially offsets the enhancement effect of a larger η e on global...
The larger heat storage fraction reflects the presence of an atmosphere and is a consequence of a much higher surface thermal conductivity on Earth due to air pressure. Note that increasing the albedo from 0.131 to 0.294 only partially offsets the enhancement effect of a larger η e on global...
With more infrastructures being built in high-altitude regions, the impact of low atmospheric pressure on the stability of air bubbles in cementitious materials has aroused extensive attention. However, its influence is still inconclusive since it is difficult to isolate the factor of air pressure ...
As maximum angular resolution (altitude measurement and target discrimination) and a radiation pattern of excellent quality are required (clutter rejection), the sizing limitations imposed by an airborne antenna generally lead to the choice of the highest frequency, that is, the S-band, for this ...
To express the geostrophic wind on a constant-pressure surface, it is necessary to introduce the hydrostatic equation: (8)∂p∂z=−ρg. Here, z is altitude and g the acceleration of gravity. The hydrostatic equation expresses a balance between the vertical component of the pressure ...