Abstract

Observing system assessments were made for the Earth Observing Nanosatellite-Microwave (EON-MW), a 12U CubeSat analog of the Advanced Technology Microwave Sounder (ATMS). Since the EON-MW channels and sensor specifications closely follow those of ATMS, the sensor characteristics and geophysical capabilities assessments indicate that the value of information for humidity (temperature) of EON-MW observations will be similar (very similar) to that of ATMS. Eight global observing system simulation experiments (OSSEs) were carried out to evaluate several different EON-MW constellations for data gap mitigation and/or replacement of existing sensors. In these OSSEs, adding 2 EON-MW sensors in different orbits, compared to adding a single EON-MW sensor, improves forecasts generally, and improves the analysis of at least wind and humidity. In terms of the overall OSSE impacts in the scenarios considered, a single EON-MW sensor is a close substitute for ATMS and two EON-MW sensors are a close substitute for the Special Sensor Microwave Imager Sounder (SSMIS). The analysis and forecast impacts indicate that EON-MW provides improved humidity profiles compared to SSMIS and ATMS.

摘要

对地球观测纳米卫星微波（EON-MW）进行了观测系统评估，EON-MW是先进技术微波探测仪（ATMS）的12U CubeSat类似物。由于EON-MW通道和传感器规格紧随ATMS，因此传感器特性和地球物理能力评估表明EON-MW观测的湿度（温度）信息值将与ATMS相似（非常相似）。进行了八个全球观测系统模拟实验（OSSE），以评估几个不同的EON-MW星座，以减轻数据间隙和/或替换现有传感器。在这些OSSE中，与添加单个EON-MW传感器相比，在不同的轨道上添加2个EON-MW传感器，通常可以改善预报，并且至少可以改善对风和湿度的分析。就所考虑的场景中的整体OSSE影响而言，单个EON-MW传感器可以替代ATMS，而两个EON-MW传感器可以替代特殊传感器微波成像仪（SSMIS）。分析和预测影响表明，与SSMIS和ATMS相比，EON-MW可提供更好的湿度曲线。