Towards the end of 2004 during the descent of the HUYGENS probe the Permittivity, Wave and Altimetry instrument (PWA) as part of the HASI experiment will investigate electrical properties and electric field fluctuations in the atmosphere of Titan below 170 km.
The IGW contribution to velocity fluctuations in the atmosphere is expected to be a weighted average of spectra corresponding to different H.
In our case, this model is augmented by a variance covariance matrix derived from the model according to Eqs. (15) and (16) to manage high-frequency refractivity fluctuations in the atmosphere.
This can be explained by the fact that, first, only uncertainties due to refractivity fluctuations in the atmosphere are taken into account, which are the dominant but not solely error source in the VLBI data analysis, and, second, the parametrization of the turbulence-describing parameter is quite simple.
I look different in different lights, in different clothing, in different moods; I seem to morph ever-so-slightly with mild fluctuations in the atmosphere, shifting with faint variations in the ambient temperature.
The rhythms, they say, are probably artifacts, produced by temperature changes or some other kind of fluctuations in the Martian atmosphere, or even within the spacecraft itself.
The gravity wave activity in the stratosphere and lower mesosphere is found to undergo temporal variations, which are correlated with the temperature fluctuations in the middle atmosphere.
Equations (16) and (15) are used to generate a variance covariance matrix based on high-frequency refractivity fluctuations in the neutral atmosphere, which is then, in a next step, incorporated in the VLBI estimation procedure.
In FSO links, fades are associated with fluctuations in pressure of the atmosphere also induces in refractive index irregularities.
To our knowledge, detailed measurements of velocity fluctuations in the middle and/or upper atmosphere above the ocean are not available at this time.
NASA's Curiosity Mars rover has detected fluctuations in methane concentration in the atmosphere, implying both types of activity occur on modern Mars.
