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首页> 外文期刊>Journal of the Atmospheric Sciences >Capturing Size and Intensity Changes of Hurricanes Irma and Maria (2017) from Polar-Orbiting Satellite Microwave Radiometers
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Capturing Size and Intensity Changes of Hurricanes Irma and Maria (2017) from Polar-Orbiting Satellite Microwave Radiometers

机译：从极地轨道卫星微波辐射尺寸捕获飓风IRMA和MARIA（2017）的飓风尺寸和强度变化

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A recently refined hurricane warm-core retrieval algorithm was applied to data from multiple polar-orbiting satellites that carry the Advanced Technology Microwave Sounder (ATMS) and the Advanced Microwave Sounding Unit-A (AMSU-A) to examine the diurnal variability of the warm cores of Hurricanes Irma and Maria. These hurricanes occurred during the 2017 hyperactive Atlantic hurricane season. Compared with data gathered by dropsondes within 100-1700 km of Hurricanes Irma and Harvey, the means and standard deviations of the differences between ATMS-derived and dropsonde-measured temperature profiles were less than 0.7 and 1 K, respectively, in the vertical layer between similar to 180 and 750 hPa. The temporal evolutions of the ATMS-derived and AMSU-A-derived maximum warm-core temperature anomalies followed more closely that of the minimum mean sea level pressure and slightly less closely that of the maximum sustained wind. The radii of the ATMS-derived warm cores at 4 and 6 K compared favorably with the 34- and 50-kt-wind radii, respectively, of Hurricane Irma (1 kt = 0.51 m s(-1)). The vertical extent of the warm core toward lower levels increased with increasing intensity when Hurricane Irma experienced a strong intensification because of an enhanced latent heat release associated with diabatic processes. The tropical cyclone (TC) inner cores at upper-tropospheric levels (similar to 250 hPa) were characterized by a single-peaked diurnal cycle with a maximum around midnight. This warm-core cycle may be an important element of TC dynamics and may have relevance to TC structural and intensity changes.
机译：最近精细的飓风暖核检索算法应用于来自多种极性轨道卫星的数据，携带先进的技术微波发声器（ATM）和先进的微波探测单元-A（AMSU-A）来检查温暖的昼夜变异性飓风IRMA和玛丽亚的核心。这些飓风发生在2017年过度高速大西洋飓风季节。与在飓风IRMA和Harvey 100-1700公里的垃圾桶内收集的数据相比，ATMS衍生和滴水测量温度型材之间的差异的差异分别在垂直层之间分别小于0.7和1k之间的差异的装置和标准偏差类似于180和750 HPA。 ATMS衍生的和AMSU-A衍生的最大核温度异常的时间演变遵循最小平均海平面压力的最小平均压力，并且略微不受最大持续风的略微密切。 ATMS-衍生的温暖核的半径在4和6 k下，飓风IRMA分别与34-和50kt-风半径相比（1kt = 0.51m S（-1））相比。当飓风IRMA经历强烈的强化时，温暖核心朝较低水平的垂直程度增加，因为与糖尿病工艺相关的潜热释放增强了强烈的强化。在上层对流层水平（类似于250hPa）的热带气旋（Tc）内芯的特征在于午夜最大的单峰昼夜循环。该温核周期可以是TC动态的重要元素，并且可能与TC结构和强度变化有关。

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