In this study, three simulations by the Mars Weather Research and Forecasting Model are compared: two 10 Martian year (MY) 2° × 2° simulations with (i) fully radiatively active dust and (ii) a prescribed dust scenario, and a (iii) 1 MY 0.5° × 0.5° simulation with prescribed dust as in (ii). From comparing (i) and (ii), we found that the impact of dust‐radiation feedback is individually different for any region. The most striking evidence are major dust lifting activities to the south of Chryse Planitia (S‐CP) seen in (i) but not in (ii). By contrast, dust lifting and deposition on the southern slopes and inside the Hellas Basin are similar in both simulations. The latter, in turn, points toward a similar near‐surface atmospheric circulation. In (iii), the total global amount of wind stress lifted dust is by a factor of ∼8 higher than in (ii), with S‐CP being a major lifting region as in (i). Nonetheless, the surface dust lifting by wind stress in (iii) may be also reduced regionally, as seen at the peak of Elysium Mons because of its unique topography. The zonal mean circulation in (i) is generally of a comparable strength to that in (ii), with exceptions in global dust storm years, when it is clearly stronger in (i), in line with a dustier atmosphere. The differences in the zonal mean circulation between (ii) and (iii) are mostly at lower altitudes and may arise because of differences in the representation of the topography.

中文翻译：

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表征粉尘辐射反馈并降低MarsWRF模型的水平分辨率至0.5度

在本研究中，比较了火星天气研究和预报模型的三个模拟：两个（10）火星年（MY）2°×2°模拟，其中（i）完全辐射活跃的粉尘和（ii）规定的粉尘场景，以及（ iii）用（ii）中规定的粉尘模拟1 MY 0.5°×0.5°。通过比较（i）和（ii），我们发现，尘埃辐射反馈的影响在任何地区都是不同的。最明显的证据是在（i）中看到的在Chryse Planitia（S-CP）南部的大型除尘活动，而在（ii）中则没有。相比之下，在两个模拟中，南部斜坡和海拉斯盆地内部的扬尘和沉积情况相似。后者反过来指向类似的近地表大气环流。在（iii）中，消除风应力的总尘埃总量比（ii）中高约8倍，S-CP是（i）中的主要起吊区域。尽管如此，由于极富独特的地形，从（e）极乐世界的高峰期可以看出，在（iii）中由于风应力引起的表面扬尘也可以在区域内减少。（i）中的纬向平均环流通常具有与（ii）中相同的强度，但全球沙尘暴年份例外，后者在（i）中明显强于大气层。（ii）和（iii）之间的纬向平均环流差异主要在较低的高度，并且可能是由于地形表示的差异而引起的。（i）中的纬向平均环流通常具有与（ii）中相同的强度，但全球沙尘暴年份例外，后者在（i）中明显强于大气层。（ii）和（iii）之间的纬向平均环流差异主要在较低的高度，并且可能是由于地形表示的差异而引起的。（i）中的纬向平均环流通常具有与（ii）中相同的强度，但全球沙尘暴年份例外，后者在（i）中明显强于大气层。（ii）和（iii）之间的纬向平均环流差异主要在较低的高度，并且可能是由于地形表示的差异而引起的。