Multisensor Agile Adaptive Sampling (MAAS): A Methodology to Collect Radar Observations of Convective Cell Life Cycle
Multisensor Agile Adaptive Sampling (MAAS): A Methodology to Collect Radar Observations of Convective Cell Life Cycle
复制标题
多传感器敏捷自适应采样 (MAAS)：收集对流细胞生命周期雷达观测数据的方法
DOI：
10.1175/jtech-d-23-0043.1
复制
发表时间：
2023
影响因子：
2.2
通讯作者：
Dolan, Brenda
中科院分区：
文献类型：
--
作者：
Lamer, Katia;Kollias, Pavlos;Luke, Edward P.;Treserras, Bernat P.;Oue, Mariko;Dolan, Brenda
多传感器敏捷自适应采样（MAAS）是一种智能传感框架，用于增加观测对流单体垂直结构（几乎没有间隙）、空间变异性（亚公里尺度）和时间演变（分辨率为0.02分钟）的可能性。MAAS的这种适应性通过自动分析最新的NEXRAD数据来指导两台机械扫描C波段雷达（CSAPR 2和CHIVO），以识别，表征，跟踪和临近预报在休斯顿域形成的所有对流单体的位置。MAAS使用预定规则列表或实时用户输入来选择要由C波段雷达跟踪和采样的对流单体。CSAPR 2跟踪雷达的第一个任务是收集三个扇区计划位置指示器（PPI）扫描到选定的细胞。PPI扫描的边缘计算机处理用于识别所选细胞内的其他靶点。在不到2分钟的时间里，CSAPR 2和CHIVO雷达都能够收集到三到六个距离高度指示器（RHI）扫描束，指向选定单元内的不同目标。只要细胞满足预定的一组标准，就沿着细胞平流的路径连续收集束。在2022年6月1日至9月30日期间，C波段雷达通过1300个独特的孤立对流单体收集了超过315 000个垂直截面观测数据，其中大多数对流单体的生命周期超过15分钟。据我们所知，这一数据集主要通过自动手段收集，构成了同类数据集中最大的数据集。
Multisensor Agile Adaptive Sampling (MAAS), a smart sensing framework, was adapted to increase the likelihood of observing the vertical structure (with little to no gaps), spatial variability (at subkilometer scale), and temporal evolution (at ∼2-min resolution) of convective cells. This adaptation of MAAS guided two mechanically scanning C-band radars (CSAPR2 and CHIVO) by automatically analyzing the latest NEXRAD data to identify, characterize, track, and nowcast the location of all convective cells forming in the Houston domain. MAAS used either a list of predetermined rules or real-time user input to select a convective cell to be tracked and sampled by the C-band radars. The CSAPR2 tracking radar was first tasked to collect three sector plan position indicator (PPI) scans toward the selected cell. Edge computer processing of the PPI scans was used to identify additional targets within the selected cell. In less than 2 min, both the CSAPR2 and CHIVO radars were able to collect bundles of three to six range–height indicator (RHI) scans toward different targets of interest within the selected cell. Bundles were successively collected along the path of cell advection for as long as the cell met a predetermined set of criteria. Between 1 June and 30 September 2022 over 315 000 vertical cross-section observations were collected by the C-band radars through ∼1300 unique isolated convective cells, most of which were observed for over 15 min of their life cycle. To the best of our knowledge, this dataset, collected primarily through automatic means, constitutes the largest dataset of its kind.