Phys.org June 26, 2023 Future increases in stratospheric water vapour risk amplifying climate change and slowing down the recovery of the ozone layer. Uncertainty in modeling primarily arises from the complex processes leading to dehydration of air during its tropical ascent into the stratosphere. An international team of researchers (UK, USA – NOAA, University of Colorado, Switzerland, Germany) used a statistical-learning approach to infer historical co-variations between the atmospheric temperature structure and tropical lower stratospheric water vapour concentrations. They demonstrated that these historically constrained relationships are predictive of the water vapour response to increased atmospheric carbon dioxide and obtained an […]
Tag Archives: Climate forecasting
Fickle winters in East Asia caused by major shift in regional atmospheric circulation, suggests study
Phys.org February 27, 2023 Researchers in Japan investigated the structure and dynamics of two distinct patterns. They showed that the winter climate over East Asia is influenced by two teleconnection patterns, the western Pacific pattern, and the Southeast Asia-Japan pattern. Using meteorological data for winters from 1974 to 2021 they established the baseline climate and analyzed anomalous departures from that baseline. In the first half of the 2020/2021 winter season, an anticyclonic circulation anomaly appeared over the southeastern Tibetan Plateau, and a corresponding cyclonic anomaly occurred over northern Japan. This pattern was associated with enhanced convection over the South China […]