An intense, quasi-steady thunderstorm over mountainous terrain. I - Evolution of the storm-initiating mesoscale circulation
An intense, quasi-steady thunderstorm over mountainous terrain. I - Evolution of the storm-initiating mesoscale circulation
复制标题
山区上空的强烈、准稳定的雷暴。
DOI：
--
复制
发表时间：
1982
期刊：
影响因子：
--
通讯作者：
K. Knupp
中科院分区：
文献类型：
--
作者：
W. Cotton;R. L. George;K. Knupp
摘要对科罗拉多州落基山脉中部和东部夏季发生的中尺度对流风暴进行了详细的多传感器个例研究。这一案例研究使用了1977年南方公园地区积云实验(空间)期间从地面气象站、雷达和系留气球、常规雷达和多普勒雷达、动力飞机和卫星获得的数据。1977年7月19日，在落基山脉内海拔2.8公里的高地平原南方公园内形成并保持着一条由北向南的强烈对流单体线。南方公园升高的地面加热形成了一个低层辐合区，将落基山脉西部的太平洋水汽输入到南方公园。大尺度雷暴线在该辐合带上空形成。随后，北面气流于下午晚些时候穿透到南方公园，使对流风暴的强度增强，出现了一股密度流。风暴系统的各种相互作用。
Abstract A detailed, multisensor case study of mesoscale convective storms occurring in summer over the central and eastern Colorado Rockies is presented. This case study uses data obtained during the 1977 South Park Area Cumulus Experiment (SPACE) from surface meteorological stations, rawinsondes and tethered balloons, conventional and Doppler radars, powered aircraft and satellites. On 19 July 1977, a north–south oriented line of intense convective cells formed and remained within South Park, an elevated plain 2.8 km above sea level located within the Rocky Mountains. Elevated surface heating in South Park created a region of low-level convergence which imported Pacific moisture from west of the Rockies into South Park. The mososcale thunderstorm line formed over this convergence zone. Subsequently, northerly surface flow, having the appearance of a “density current”, penetrated into South Park late in the afternoon, enhancing the intensity of convective storms. Various interactions of the storm system ...