Dust storms are a major cause of central Sonoran Desert weather fatalities. Through back-trajectory analysis of North American Monsoon dust storms in central Sonoran Desert of the United States. This study is specific to central Arizona (USA) from 2009 to 2022 using the HYSPLIT model. Our findings have shown that dust storms originate from southerly or near-southerly regions. The dust storms displaying the highest concentrations of particulates show a preference to originate from the southwest. This coincides with the development of a 500 hPa ridge to the east of the study area. The highest concentration storms’ back-trajectories display the lowest heights above the ground. Given their southwestern origin, these storms travel upslope along the seasonally dry river beds of the Gila River and its tributaries. Weaker dust storms originate over a wider area with a shift to a southerly direction. Such origination indicates that weaker dust storms are traveling downslope through the washes and channels of the dry Santa Cruz River. As dust concentrations drop, storm direction drifts east and dust height is suspended higher. This paper highlights the spatial variations in central Arizona dust storms, showing the likeliest paths of the strongest events and assists in identifying aeolian dust origins.

沙尘暴是索诺兰沙漠中部天气死亡的主要原因。通过对美国索诺兰沙漠中部北美季风沙尘暴的回溯轨迹分析。本研究使用 HYSPLIT 模型针对 2009 年至 2022 年亚利桑那州中部（美国）进行。我们的研究结果表明，沙尘暴起源于南风或近南地区。颗粒物浓度最高的沙尘暴倾向于来自西南部。这与研究区东部 500 hPa 高压脊的形成相吻合。浓度最高的风暴的后向轨迹显示离地高度最低。鉴于其西南​​起源，这些风暴沿着吉拉河及其支流季节性干涸的河床向上移动。较弱的沙尘暴起源于更广泛的区域，并向南移动。这种起源表明，较弱的沙尘暴正在通过干涸的圣克鲁斯河的冲刷和河道向下倾斜。随着沙尘浓度下降，风暴方向向东漂移，沙尘高度悬浮得更高。本文重点介绍了亚利桑那州中部沙尘暴的空间变化，显示了最强事件的最可能路径，并有助于识别风尘起源。