Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX 77004.
Department of Physics, University of Houston, Houston, TX 77004.
Proc Natl Acad Sci U S A. 2022 May 24;119(21):e2121084119. doi: 10.1073/pnas.2121084119. Epub 2022 May 16.
SignificanceThe radiant energy budget is a fundamental metric for planets. Based on the observations from multiple missions, we provide a global picture of Mars' emitted power. Furthermore, we estimate the radiant energy budget of Mars, which suggests that there are energy imbalances at the time scale of Mars' seasons. Such energy imbalances provide a new perspective to understanding the generating mechanism of dust storms. Mars' radiant energy budget is assumed to be balanced at all time scales in current models and theories, but our analyses show that the energy budget is not balanced, at least at the time scale of Mars' seasons. Therefore, current theories and models should be revisited with the newly revealed energy characteristics.
意义
辐射能量预算是行星的基本度量标准。基于多个任务的观测，我们提供了火星发射功率的全球图像。此外，我们还估算了火星的辐射能量预算，这表明在火星季节的时间尺度上存在能量不平衡。这种能量不平衡为理解沙尘暴的产生机制提供了新的视角。目前的模型和理论假设火星的辐射能量预算在所有时间尺度上都是平衡的，但我们的分析表明，能量预算至少在火星季节的时间尺度上是不平衡的。因此，应该用新揭示的能量特征来重新审视当前的理论和模型。
