In the image, the amount of SO 2 present is colour-coded according to the scale on the right-hand side, and the location of the volcano itself is shown as a red triangle.Ĭredits: Image: © Crown copyright, Met Office, Data: SACS/Royal Belgian Institute for Space Aeronomy This instrument can be used to infer a vertical column amout of SO 2 in the atmosphere (measured in Dobson Units - DU) from measurements of solar radiation at several different ultraviolet wavelengths. The image above shows a well-defined plume of SO 2 observed on 28 November 2022, derived from the TROPOMI instrument on the Copernicus Sentinel-5 Precursor satellite. Little or no volcanic ash was injected into the atmosphere from this, but significant amounts of gaseous sulphur dioxide (SO 2) were observed from the eruption over a period of around two weeks. Mauna Loa, considered to be the world's largest active volcano, began erupting on 27 November 2022, the first time it had erupted since 1984. November 2022 - Mauna Loa eruption 28 November 2022 They are therefore of key interest to forecasters of the impacts of space weather, at the Met Office and elsewhere.Ĭredits: Image: © Crown copyright, Met Office, Data: GOES-R Series Level 1b Solar Ultraviolet Imager (SUVI) Product in FITS Format, NOAA National Centers for Environmental Information SUVI observations help monitor unstable solar regions and warn of associated activity such as solar flares or coronal mass ejections, which can disrupt the Earth's ionosphere enough to impair terrestrial radio communications, and lead to power grid outages. The image, taken on 8 December 2022, shows EUV radiation measured at a wavelength of 30.4 nanometres, with striking prominence eruptions being seen in the top-right hand and lower-right hand quadrants of the Sun's limb.ĮUV photons, travelling at the speed of light, give valuable insights into the solar sources of space weather. ![]() This instrument allows us to monitor the Sun's very hot outer atmosphere (the corona), enabling us to see EUV photons that are created in the plasma of the corona but which are not visible from the ground due to absorption by the Earth's atmosphere. ![]() The image above is created using data from GOES-16's Solar Ultraviolet Imager (SUVI), a sophisticated extreme ultraviolet (EUV) telescope. We finish off our 2022 satellite image highlights with a view not (as usual) of the Earth, but rather of the Sun. ![]() December 2022 - solar prominence eruptions 8 December 2022
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