Signatures of Hydrometeor Species from Airborne Passive Microwave Data for Frequencies 10–183 GHz
Signatures of Hydrometeor Species from Airborne Passive Microwave Data for Frequencies 10–183 GHz
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频率 10–183 GHz 机载被动微波数据的水凝物种类特征
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
D. Cecil
中科院分区：
文献类型：
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作者：
K. Leppert;D. Cecil
摘要利用中纬度大陆对流云实验中先进微波降水辐射计和锥形扫描毫米波成像辐射计采集的强雷暴上空被动微波亮度温度（BTs）与应用于俄克拉荷马万斯空军基地（KVNX）双极化天气监测雷达-1988多普勒雷达数据的水流星识别数据进行了比较。这项工作的目标是根据全球降水测量任务微波成像仪使用的频率测量的bt来确定各种水流星物种的特征。结果表明，冰雹在包括10.7 GHz在内的所有频率上都与冰散射特征有关。然而，似乎≤37.1 GHz的频率对识别冰雹最有用。低层（低于2.5公里）冰雹可能出现在以下情况：240k 19.4 GHz, 170k 37.1 GHz, 90k 85.5 GHz, 80k 89.0 GHz, 100k 165.5 GHz, 100k 1…
AbstractPassive microwave brightness temperatures (BTs) collected above severe thunderstorms using the Advanced Microwave Precipitation Radiometer and Conical Scanning Millimeter-Wave Imaging Radiometer during the Midlatitude Continental Convective Clouds Experiment are compared with a hydrometeor identification applied to dual-polarimetric Weather Surveillance Radar-1988 Doppler radar data collected at Vance Air Force Base, Oklahoma (KVNX). The goal of this work is to determine the signatures of various hydrometeor species in terms of BTs measured at frequencies used by the Global Precipitation Measurement mission Microwave Imager. Results indicate that hail is associated with an ice-scattering signature at all frequencies examined, including 10.7 GHz. However, it appears that frequencies ≤ 37.1 GHz are most useful for identifying hail. Low-level (below 2.5 km) hail becomes probable for a BT below 240 K at 19.4 GHz, 170 K at 37.1 GHz, 90 K at 85.5 GHz, 80 K at 89.0 GHz, 100 K at 165.5 GHz, and 100 K at 1...