The leading shock wave associated with the CME was travelling radially at a speed of around 3,300 km/s (2,100 mi/s) relative to STEREO-A by the time it reached the spacecraft. Spacecraft observations recorded the shockwave at 20:55 UTC on 23 July while the magnetic clouds arrived two hours later. The spacecraft is a solar observatory equipped to measure such activity, and because it was far away from the Earth and thus not exposed to the strong electrical currents that can be induced when a CME hits the Earth's magnetosphere, it survived the encounter and provided researchers with valuable data. The eruption tore through Earth's orbit, hitting the STEREO-A spacecraft. The CME expelled a pair of adjacent magnetic clouds that drove a fast-moving shock wave outward from the Sun. The eruption emanated from solar active region 11520 and coincided with what was at most an X2.5-class solar flare. Please review our full terms contained on our Terms of Service page.The event occurred in 2012, near the local maximum of sunspots that can be seen in this graph.Īt 02:08 UT on 23 July 2012, a large coronal mass ejection (CME) was launched from the Sun. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. We assume no responsibility for any decisions made on the basis of the content presented on this site. Weather data is prone to errors, outages, and other defects. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Time zones for airports and weather stations are provided by. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database. Land Use data comes from the Global Land Cover SHARE database, published by the Food and Agriculture Organization of the United Nations.Įlevation data comes from the Shuttle Radar Topography Mission (SRTM), published by NASA's Jet Propulsion Laboratory. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.Īll data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition, by Jean Meeus.Īll other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis. To get a sense of how much these sources agree with each other, you can view a comparison of Corona and the stations that contribute to our estimates of its temperature history and climate. KAJO, 74% 3 mi, -148 ft KRAL, 19% 9 mi, 125 ft KNZJ, 7% 17 mi, -299 ft © OpenStreetMap contributors Riverside Municipal Airport (KRAL, 19%, 9 mi, northeast, 125 ft elevation change)Įl Toro Mcas (KNZJ, 7%, 17 mi, southwest, -299 ft elevation change). ![]()
0 Comments
Leave a Reply. |