![]() Mean annual rainfall in the true WRZ exhibits little association with the identified patterns of seasonality and rainfall variability despite the driest core WRZ stations being an order of magnitude drier than the wettest stations. In addition to rain-bearing winds, latitude and annual rain day climatology appear to influence the spatial structure of rainfall variability but have little effect on seasonality. Rainfall time series of the core and surroundings are very weakly correlated (R 2<0.1), also in the winter half-year, implying that the YRZ is not simply the superposition of summer and winter rainfall zones. This spatial pattern corresponds closely to those of rainfall seasonality and temporal variability. The core receives around 80 % of its rainfall with westerly or north-westerly flow compared to only 30 % in the south-western YRZ incursion, where below-average rainfall occurs on days with (usually pre-frontal) north-westerly winds. In places, this transition is highly complex, including where the YRZ extends much further westward along the southern mountains than has previously been reported. The true WRZ is composed of a core and periphery beyond which lies a transition zone to the surrounding year-round rainfall zone (YRZ) and late summer rainfall zone. A well-defined "true" WRZ is identified with strong spatial coherence between temporal variability and seasonality not previously reported. These spatial patterns are compared to those of rainfall occurring under each ERA5 synoptic-scale wind direction sector. Using a dense station network covering the region encompassing the WRZ, we study spatial heterogeneity in rainfall seasonality and temporal variability. However, such understanding remains essential in studying past and potential future climate changes. The only thing that could be improved is the slightly outdated and fixed-size user interface.A renewed focus on southern Africa's winter rainfall zone (WRZ) following the Day Zero drought and water crisis has not shed much light on the spatial patterns of its rainfall variability and climatological seasonality. Even if you go to full-screen mode, the window retains its default dimensions, which means you can’t get a clearer view of what you’re looking at if you want to.Īll in all, Seasonality Core is a great weather app for hobbyists, with plenty of information to satisfy even the most demanding of amateur meteorologists. While the UI layout is very intuitive, the design does look a bit outdated, and the biggest problem is that the window cannot be resized. There is even a weather journal where you can save the conditions on a particular day, in any location, for future reference. ![]() Everything from wind speed and direction, pressure, precipitation, cloud cover, and humidity, all over a user-defined time period. Same goes for the graphs on the bottom-left, but the amount of details available here is quite daunting. Maximize the wind map, and you can pan around, zoom in our out, and change various display properties. You can switch between them quickly and refresh weather data on demand. Each location’s temperature is displayed in the sidebar, along with an icon indicating the current weather conditions. On the left, you have all the locations you have added for monitoring. ![]() One quick glance will get you most of the info you need, and you can zoom in for more. You have basic readings on top, a three-day forecast and sunrise/sunset times below, followed by a series of graphs and a wind map. The main window is structured to concentrate as much information as possible in one view. ![]() Detailed weather forecast for multiple locations It gives you every significant parameter that a meteorologist would be interested in, and it’s all presented in a fairly intuitive fashion. This application doesn’t just show you the temperature and precipitation forecast. Apple’s iPhone app gives you a brief rundown of what you need to know that might get in the way of your plans, but if you want a lot more detail, you’re going to need something like Seasonality Core. There’s a weather app out there for every kind of user, but some are a lot more particular than others.
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