Topic
Solar eclipse
About: Solar eclipse is a research topic. Over the lifetime, 2737 publications have been published within this topic receiving 22625 citations.
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TL;DR: The effects on temperature and wind caused by the solar eclipse of August 11, 1999 in the south western part of Germany were simulated in this article, where the effects on wind speed were rather small.
Abstract: The effects on temperature and wind caused by the solar eclipse of August 11, 1999 in the south western part of Germany were simulated While during the real event clouds and precipitation were present in most of the model domain cloud free conditions are assumed for the simulation A temperature decrease of up to 7 K was simulated during the eclipse event close to the surface Thermal stability changes from unstable to stable conditions and the temperature gradient reaches values which are comparable to those normally found after sunset Temperature keeps about 1 K lower after the eclipse event during the rest of the day Boundary layer height shortly after the eclipse event differs by several hundred meters The effects on wind speed are rather small with the exception of the slopes of the mountains and in the vicinity of Lake Constance
21 citations
TL;DR: The two main ultraviolet-signatures resulting from the Io-magnetosphere interaction are the local auroras on Io's atmosphere, and the Io footprints on Jupiter as mentioned in this paper, and they were studied here how Io's daily eclipses...
Abstract: The two main ultraviolet-signatures resulting from the Io-magnetosphere interaction are the local auroras on Io's atmosphere, and the Io footprints on Jupiter. We study here how Io's daily eclipses ...
21 citations
TL;DR: In this paper, the authors identify the growth of plasma density irregularities and turbulence on the bottomside ionosphere during the eclipse totality, signified by the distinct appearance of spread-F echoes in the ionosonde data.
Abstract: Data from ionosonde and GPS total electron content (TEC) observations reveal a number of ionospheric phenomena that occurred in response to the total solar eclipse on 21 August 2017 over North America. The eclipse started over the US west coast at ∼16:00 UTC (08:00 LT) and ended over the US east coast at ∼20:00 UTC (15:00 LT). We identify the growth of plasma density irregularities and turbulence on the bottomside ionosphere during the eclipse totality (at ∼10:34 LT over the Idaho station), signified by the distinct appearance of spread-F echoes in the ionosonde data. These spread-F echoes appeared in both O-mode and X-mode traces, and they lasted for approximately 10 minutes. Preceding the appearance of the spread echoes, an uplift of the ionospheric F-layer and steepening of the bottomside ionospheric density gradient were seen in the ionosonde data. In addition, data from the ionosonde observations also show some characteristic signatures of traveling ionospheric disturbances (TIDs) at ∼300 km altitude during the eclipse. The TIDs in the ionosonde observations were observed roughly 30 minutes after the time of maximum eclipse, and they have a wave periodicity of approximately 10 minutes. In other words, these TIDs were in the wake of the eclipse totality (lagging behind the umbra), and the wave period was shorter than the medium-scale or short-scale TIDs typically seen in the GPS TEC data. Finally, large reductions in TEC and ionospheric plasma densities (by 33%–45%) as a response to the eclipse were observed in both the GPS TEC and ionosonde data. The ionospheric density in the ionospheric E-region reached minimum roughly at the same time as the maximum eclipse, while the ionospheric F-region density and GPS TEC reached minimum 20–30 minutes after the maximum eclipse.
21 citations
TL;DR: The first one performed by an orbiting device was performed by the US Naval Research Laboratory's 1965 93 A satellite and telemetered at Arcetri as discussed by the authors, which was the first observation of a solar eclipse performed by a satellite.
Abstract: THE solar eclipse of May 20, 1966, was observed by the US Naval Research Laboratory's 1965 93 A satellite and telemetered at Arcetri This observation, so far as we know% is the first one performed by an orbiting device
20 citations
20 citations