New results (Grassi et al., 2020, https://doi.org/10.1029/2019JE006206) from analysis of Juno Jovian Infrared Auroral Mapper (JIRAM) 4‐ to 5‐μm observations provide updated latitudinal abundance profiles and measurements of the spatial distribution of H₂O, NH₃, PH₃, GeH₄, and AsH₃ in Jupiter's troposphere near the 3‐ to 5‐bar level. The observed compositional variations provide new constraints on processes shaping chemical abundances in the cloud‐forming region of the troposphere, including vertical and horizontal atmospheric mixing, meteorology and cloud formation, transport‐induced quenching, and photochemistry. Along with recent results from the Juno Microwave Radiometer (MWR) for NH₃ and H₂O abundances far below the clouds, the JIRAM measurements of key disequilibrium tracer species can also be used to explore the coupled dynamics, chemistry, and bulk composition of Jupiter's deep atmosphere. The heavy element abundance inventory on Jupiter is a key constraint for the development and assessment of giant planet formation models. Combined with prior ground‐based, spacecraft, and in situ observations, the Juno results suggest near‐uniform (∼2–4 times) enhancements over protosolar abundances for several heavy elements in Jupiter's atmosphere, giving new clues about the composition of the material accreted, the timing and location of formation, and the internal evolution of Jupiter over the history of the solar system.

中文翻译：

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映射木星的恶作剧

从分析的新结果（拉西等人，2020年，https://doi.org/10.1029/2019JE006206）朱诺木星极光红外成像仪（JIRAM）4-至5- μ米观测提供更新的纬向丰度轮廓和的测量H ₂ O，NH ₃，PH ₃，GeH ₄和AsH _3的空间分布在木星对流层中3至5 bar的水准附近。观测到的成分变化对形成对流层云形成区域化学丰度的过程提供了新的约束，包括垂直和水平大气混合，气象学和云形成，运输诱导的猝灭和光化学。以及Juno微波辐射计（MWR）对NH ₃和H ₂ O的最新结果云量远低于云层时，关键不平衡示踪物类的JIRAM测量结果还可用于探索木星深层大气的耦合动力学，化学和体积组成。木星上的重元素丰度清单是开发和评估巨型行星形成模型的关键约束。结合先前的地面，宇宙飞船和原位观测，Juno结果表明，木星大气中几种重元素的原生质丰度几乎均匀（约2-4倍）增强，为有关所沉积物质的成分提供了新线索，形成的时间和位置，以及木星在太阳系历史上的内部演化。