Warm season diurnal precipitation over the plains east of the Rockies

落基山脉以东平原的暖季日降水量

• 批准号: RGPIN-2017-06229
• 负责人: Li, Yanping
• 金额: $ 1.6万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=634127
• 关键词: Warm; season; diurnal; precipitation; over

The plains east of the Rockies are central to global grain production and known as the Breadbasket of the World. These regions are subjected to a high frequency of extreme rainstorms with summer flooding frequently associated with heavy precipitation generated by convective and synoptic weather systems. However the rainfall diurnal cycle especially the nighttime rainfall maximum observed over the plains is poorly understood. The eastward propagating of the convective systems is also largely under-represented in current numerical weather prediction models. Compared to the US Great Plains, the summertime diurnal precipitation over the Canadian Prairies is relatively unexplored.

落基山脉以东的平原是全球粮食生产的中心，被称为世界粮仓。这些地区经常发生极端暴雨，夏季洪水往往与对流和天气系统产生的强降水有关。然而，降雨量的日周期，特别是在平原上观测到的夜间降雨量最大值却知之甚少。对流系统的东向传播在目前的数值天气预报模式中也很大程度上没有得到充分的体现。与美国大平原相比，加拿大大草原的夏季日降水量相对较少。