First global map of Venus nightside surface temperature using Akatsuki infrared measurements reveals hot Venus surface with an average surface temperature of about 698 K. Surface temperatures do not show any significant variation with changing latitudes because only a small amount (~2.5%) of solar ...
[1] The Venus Express spacecraft images the nightside thermal emissions using the Visible and Infrared Thermal Imaging Spectrometer (VIRTIS). At 1.02, 1.10, and 1.18 脦录m, thermal emission from the surface is observed. The signal is attenuated by scattering and absorption in the dense ...
Nitric oxide (NO) behaves in a similar manner, being dissociated to produce nitrogen atoms on the dayside and recombining to form N2 on the nightside. Nitric oxide (NO) nightglow has been observed in both nadir and limb geometry, at UV wavelengths near 250 nm and 215 nm, and in the near...
Venus - Atmosphere, Orbit, Surface: Since Galileo’s discovery of Venus’s phases, the planet has been studied in detail, using Earth-based telescopes, radar, and other instruments. Over the centuries telescopic observers, including Gian Domenico Cassini
Prominent equatorward flows are found on the nightside, resulting in null meridional velocities when these are zonally averaged. The velocity structure of the thermal tides was determined without the influence of the Hadley circulation. The semidiurnal tide was found to have an amplitude large enough...
Although there may also be some H∗ atoms produced on Venus’ nightside, total H∗ escape rates that reach values ≥5×1025 s−1 are very unlikely as long as the solar activity was not higher than at solar maximum. Taking the sum of ion and suprathermal escape for H, this yields...
We have used near-infrared spectroscopic observations of the Venus nightside taken with the Infrared Imager and Spectrograph 2 (IRIS2) on the Anglo–Australian Telescope to derive temperature maps for the Venus mesosphere at an altitude of ∼95 km. The temperatures are derived from the distributi...
The neutral atmosphere was probed down to within 35 km of the planetary surface. Differences in the temperature and pressure profiles for the nightside and dayside, and apparent kilometer-size structure in the atmosphere, are discussed. 展开 ...
The nightside cloud-top circulation of the atmosphere of Venus Although Venus is a terrestrial planet similar to Earth, its atmospheric circulation is much different and poorly characterized. Winds at the cloud top have been measured predominantly on the dayside. Prominent poleward drifts have been ...
Transitioning from nightside to dayside resulted in an increase in the instruments baseplate temperature by 3.2 K and detector housing temperature by 4.2 K. However, the thermal control system of the microbolometer kept the chip temperature stable within a range of 23 mK (Helbert et al....