Topics created by af4ex

@af4ex "CAMS forecasts of total column sulphur dioxide show a large plume, originally from the eruption of the Nishinoshima volcano, trapped in a low pressure system over the Pacific Ocean." https://atmosphere.copernicus.eu/new-cams-layers-windy-platform

Some general notes to add to this thread: Windy does not create any forecast data but instead only visualises forecast and actual data received from various third party providers. There are many useful but also complex and expert level tools and data available via Windy, therefore the user must always take care: To understand what information they are displaying and viewing To understand from where and when the information was sourced To understand what this information actually means Comparing Forecast data with Actual data can be a common mistake. Hope this helps :)

@af4ex During the cold season, here the austral winter, there are currently high pressures over the pole. In NH they bring the typical Siberian anticyclone with high pressure figures. See « Records » in: https://en.m.wikipedia.org/wiki/Atmospheric_pressure So 1060 hPa is not unusual in polar region. This thermic anticyclone is not perfectly centred on the pole itself as shown by @Gkikas-LGPZ

@af4ex The two links in my reply describe it in detail. The partial 'hole' (thinning, not a hole) is largely over an area that's uninhabited by humans. Plus the angle of incidence of the Sun in Spring means that rays still have to pass through plenty of Stratospheric Ozone to get to the surface. And by early Summer when the incident rays are getting higher, the hole has already closed. So it's not much of a hazard in practice.