NAMMA DC-8 METEOROLOGICAL MEASUREMENT SYSTEM (MMS) V1

The NAMMA DC-8 Meteorological Measurement System (MMS) dataset used the MMS, which consists of three major systems: an air-motion sensing system to measure air velocity with respect to the aircraft, an aircraft-motion sensing system to measure the aircraft velocity with respect to the Earth, and a data acquisition system to sample, process, and record the measured quantities. The air-motion system consists of two airflow-angle probes, three total temperature probes each with a different response time, a pitot-static pressure probe, and a dedicated static pressure system. All probes and sensors are judiciously located at specific positions of the fuselage. The aircraft-motion sensing system consists of an embedded GPS ring laser inertial navigation system, and a multiple-antenna GPS attitude reference system. Customized software was developed to control, sample, and process all sensors and hardware. These data files were generated during support of the NASA African Monsoon Multidisciplinary Analyses (NAMMA) campaign, a field research investigation sponsored by the Science Mission Directorate of the National Aeronautics and Space Administration (NASA). This mission was based in the Cape Verde Islands, 350 miles off the coast of Senegal in west Africa. Commencing in August 2006, NASA scientists employed surface observation networks and aircraft to characterize the evolution and structure of African Easterly Waves (AEWs) and Mesoscale Convective Systems over continental western Africa, and their associated impacts on regional water and energy budgets.

NAMMA DC-8气象测量系统（MMS）数据集采用了MMS系统，该系统由三个主要部分组成：一个空气运动感知系统，用以测量相对于飞机的空气速度；一个飞机运动感知系统，用以测量相对于地球的飞机速度；以及一个数据采集系统，用于采样、处理和记录测得的各种量值。空气运动系统包括两个气流角度探头、三个响应时间各异的总量温探头、一个皮托管静压探头，以及一个专门的静压系统。所有探头和传感器均被精心安置在机身特定的位置。飞机运动感知系统由一个嵌入式GPS环形激光惯性导航系统和一个多天线GPS姿态参考系统组成。为控制、采样和处理所有传感器和硬件，开发了定制化的软件。这些数据文件是在支持美国国家航空航天局（NASA）非洲季风多学科分析（NAMMA）活动中生成的，该活动是一项由NASA科学任务局资助的实地研究调查。此次任务以佛得角群岛为基地，位于西非塞内加尔海岸350英里之外。自2006年8月起，NASA科学家利用地表观测网络和飞机，对西非大陆上空非洲东风波（AEWs）和中尺度对流系统（MESOSCALE CONVECTIVE SYSTEMS）的演变和结构进行了表征，并研究了它们对区域水资源和能量收支的影响。