Phys.org October 10, 2024 Convectively coupled equatorial waves (CCEWs) can be potential sources of predictability for sub-seasonal to seasonal prediction over northern Australia. Researchers in Australia studied the relationship between these waves and rainfall in northern Australia from 1981 to 2018. They found the waves had a significant impact on rainfall during the southern summer (December–February) and autumn (March–May). When waves combined in certain ways, heavy rain events become even more likely. Due to Australia’s vast landmass and local geography, the impacts of these waves were quite different across the continent. They showed that the activity of the “atmospheric melodies” […]
Tag Archives: Extreme weather
Extreme weather to strengthen rapidly over next two decades, research suggests
Phys.org September 2024 While the magnitude of changes in mean and extreme climate are broadly studied, regional rates of change, a key driver of climate risk, have received less attention. Using large ensembles of climate model simulations an international team of researchers (Norway, UK) showed that nearly three quarters of the global population can expect strong and rapid changes in extreme temperatures and rainfall in the next 20 years unless greenhouse gas emissions are cut dramatically. Their research showed that 20% of the population could face extreme weather risks if emissions are cut enough to reach the aims of the […]
Long-term satellite observations show climatological characteristics of isolated deep convection over the Tibetan Plateau
EurekAlert April 10, 2024 Researchers in China investigated isolated deep convections (IDCs), which have a smaller spatial and temporal size than mesoscale convective systems (MCSs), over the TP in the rainy season during 2001–2020. They showed that IDCs mainly concentrated over the southern Tibetan plateau (TP). The larger IDC had intense precipitation contributing 20 %–30 % to total precipitation, with a larger percentage in July and August than in June and September. IDCs contribute more to both total precipitation and extreme precipitation over the TP compared to the surrounding plain regions. IDCs over the TP account for a larger fraction […]
Extreme rainfall events are connected around the world
Science Daily January 30, 2019 An international team of researchers (UK, Germany, Russia) developed a new method rooted in complex system theory to study high-resolution satellite data of rainfall. By breaking the globe into a grid, the team could see where events occurred and determine how ‘synchronous’ they were. The results from this ‘complex network’ model, analysed using their understanding of the motion of the atmosphere, revealed a possible mechanism for how the events were connected. The research could help better predict when and where extreme rainfall events will occur around the world. The insights can be used to test […]