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The GOES-R GeoStationary Lightning Mapper (GLM)

机译:GOES-R GeoStationary闪电测绘仪(GLM)

摘要

The Geostationary Operational Environmental Satellite (GOES-R) is the next series to follow the existing GOES system currently operating over the Western Hemisphere. Superior spacecraft and instrument technology will support expanded detection of environmental phenomena, resulting in more timely and accurate forecasts and warnings. Advancements over current GOES capabilities include a new capability for total lightning detection (cloud and cloud-to-ground flashes) from the Geostationary Lightning Mapper (GLM), and improved capability for the Advanced Baseline Imager (ABI). The Geostationary Lighting Mapper (GLM) will map total lightning activity (in-cloud and cloud-to-ground lighting flashes) continuously day and night with near-uniform spatial resolution of 8 km with a product refresh rate of less than 20 sec over the Americas and adjacent oceanic regions. This will aid in forecasting severe storms and tornado activity, and convective weather impacts on aviation safety and efficiency among a number of potential applications. In parallel with the instrument development (a prototype and 4 flight models), a GOES-R Risk Reduction Team and Algorithm Working Group Lightning Applications Team have begun to develop the Level 2 algorithms (environmental data records), cal/val performance monitoring tools, and new applications using GLM alone, in combination with the ABI, merged with ground-based sensors, and decision aids augmented by numerical weather prediction model forecasts. Proxy total lightning data from the NASA Lightning Imaging Sensor on the Tropical Rainfall Measuring Mission (TRMM) satellite and regional test beds are being used to develop the pre-launch algorithms and applications, and also improve our knowledge of thunderstorm initiation and evolution. An international field campaign planned for 2011-2012 will produce concurrent observations from a VHF lightning mapping array, Meteosat multi-band imagery, Tropical Rainfall Measuring Mission (TRMM) Lightning Imaging Sensor (LIS) overpasses, and related ground and in-situ lightning and meteorological measurements in the vicinity of Sao Paulo. These data will provide a new comprehensive proxy data set for algorithm and application development.
机译:对地静止业务环境卫星(GOES-R)是继目前在西半球运行的现有GOES系统之后的下一个系列。先进的航天器和仪器技术将支持扩大对环境现象的探测,从而产生更及时,准确的预报和警告。当前GOES功能的改进包括对地静止闪电映射器(GLM)进行总闪电检测(云和云对地闪光)的新功能,以及高级基线成像仪(ABI)的增强功能。对地静止照明测绘仪(GLM)将在白天和黑夜连续绘制总闪电活动(云中和云对地照明闪光)的地图,其空间分辨率几乎一致,为8 km,产品刷新率在不到20秒的时间内美洲及邻近的海洋地区。这将有助于预测严重的风暴和龙卷风活动,以及对流天气对航空安全和效率的多种潜在影响。在进行仪器开发(原型和4个飞行模型)的同时,GOES-R风险降低小组和算法工作小组闪电应用小组已开始开发2级算法(环境数据记录),cal / val性能监控工具,以及单独使用GLM与ABI相结合的新应用程序,并与基于地面的传感器相结合,并且通过数字天气预报模型预测增强了决策辅助功能。来自热带雨量测量任务(TRMM)卫星和区域试验台上的NASA闪电成像传感器的代理总闪电数据正用于开发发射前的算法和应用,还可以提高我们对雷暴引发和演变的认识。计划在2011-2012年进行的一项国际野外运动将从VHF闪电测绘阵列,Meteosat多波段图像,热带降雨测量任务(TRMM)闪电成像传感器(LIS)立交桥以及相关的地面和原地闪电和圣保罗附近的气象测量。这些数据将为算法和应用程序开发提供新的综合代理数据集。

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