Stochastic Linear Modeling of the Planetary Wave Climate of the Stratosphere

平流层行星波气候的随机线性模型

基本信息

批准号：
9708194
负责人：
Walter Robinson
金额：
$ 11.73万
依托单位：
University of Illinois at Urbana-Champaign
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1997
资助国家：
美国
起止时间：
1997-09-01 至 2001-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9708194&HistoricalAwards=false
关键词：
Stochastic Linear Modeling Planetary Wave

项目摘要

9708194 Robinson Dr. Robinson will study stratospheric planetary waves - their variability, spectra, and interactions with the zonal flow - using a stochastically forced linear model. This approach, which recently has been successfully applied to tropospheric storm tracks, will permit the PI and colleagues to examine the influence of tropospheric and stratospheric zonal flows and stationary planetary waves on a full and unbiased spectrum of transient and traveling stratospheric waves. Specific issues that will be explored are: (1) the relative importance of transient and stationary wave activity in driving the zonal flow; (2) the extent to which stratospheric wave activity is controlled by stratospheric and tropospheric zonal flows, and the importance of interannual variability of the zonal flow in determining interannual variability in wave activity; (3) the importance of wave-wave interactions in regulating stratospheric wave activity; and (4) the expected interannual variability in wave-driving and the zonal flow in the absence of interannually varying boundary conditions. Dr. Robinson is a theoretician with a history of effectively employing linear theory in the study of atmospheric dynamics. He will evaluate the success of this approach by comparing his theoretical results with observations. This award is supported jointly by the Climate Dynamics and Large-scale Dynamic Meteorology Programs.

9708194鲁滨逊博士罗宾逊博士将使用随机强制的线性模型研究平流层行星波 - 它们的变异性，光谱和与纬向流的相互作用。最近已成功应用于对流层风暴轨迹的这种方法将允许PI和同事检查对流层和平流层区域流量以及固定的行星波对瞬态和流行平流层波的全部固定行星的影响。将要探索的特定问题是：（1）瞬态和固定波活动在驱动纬向流动中的相对重要性；（2）平流层波活性由平流层和对流层纬向流的控制程度，以及纬向流动流量在确定波活性际变化方面的年际变化的重要性；（3）波波相互作用在调节平流层波活性中的重要性；（4）在没有跨间变化的边界条件的情况下，波动驱动和区域流的预期际变化。鲁滨逊博士是一位理论家，具有有效地利用线性理论的史。他将通过比较他的理论结果与观察结果来评估这种方法的成功。该奖项由气候动态和大规模动态气象计划共同支持。