Atmospheric Adjustment

小行星9521299 大气科学家对大气进行数值模拟的能力对于提高对大气过程的理解和天气预报至关重要。 因此，重要的是要了解大气的能量学和各种数值表示大气的能力，以充分模拟能量学。 主要研究者将对称为大气调节的过程进行理论/数值研究，该过程定义为可压缩大气对规定加热的响应。 大气调整研究的是在大气快速加热（如对流云）造成的不平衡之后，大气恢复平衡的趋势。 将通过评估声学和重力模式之间的能量分配来审查由于快速加热而产生的大气能量学。 经常 由于声波在气象学上并不重要，因此建立了大气数值模式来消除声波。 然而，PI最近的研究表明，情况可能并非如此。 这项研究将起到两个实际作用。 由于这项研究将评估声学模式在天气现象中的作用，因此将开发一种方法来记录滞弹性（非声学）方程相对于完全可压缩方程（允许声波的方程）的优点。 该研究还将提供一个基准，可以对各种天气数值模型进行测试。 ***

9521299 Bannon The ability of atmospheric scientists to numerically model the atmosphere is fundamental for improved understanding of atmospheric processes and for weather prediction. Accordingly, it is important to understand the energetics of the atmosphere and the capabilities of various numerical representations of the atmosphere to adequately simulate the energetics. The Principal Investigator will pursue a theoretical/numerical investigation of a process known as atmospheric adjustment which is defined as the response of a compressible atmosphere to a prescribed heating. The study of atmospheric adjustment deals with the tendency of the atmosphere to return to a state of balance after the imbalance caused by rapid atmospheric heating such as might be caused by convective clouds. The atmospheric energetics due to rapid heating will be examined with an assessment of the partitioning of energy between acoustic and gravity modes. Often atmospheric numerical models are constructed to remove acoustic waves, for they are not considered meteorologically important. Recent research by the PI, however, has shown that this might not be the case. This research will serve two practical functions. Since the research will assess the role of acoustic modes in weather phenomena, a means will be developed to document the merits of anelastic (non-acoustic) equations relative to fully compressible equations (those that allow for acoustic waves). The research also will provide a benchmark against which various weather numerical models can be tested. ***