New Evidence for Improving Omega Estimation by Explicitly Considering Horizontal Divergence
文献类型：期刊论文
| 作者 | Yuan Zhuojian2; Qi Jindian2; Gao Shouting1; Feng Yerong2; Xu Pengcheng3 ; Wu Naigeng2
|
| 刊名 | ADVANCES IN ATMOSPHERIC SCIENCES
 |
| 出版日期 | 2014 |
| 卷号 | 31期号:2页码:449-456 |
| 关键词 | VERTICAL MOTIONS EQUATION CYCLONE WINTER MODEL omega estimation weather forecast horizontal divergence vertical motion |
| ISSN号 | 0256-1530 |
| 其他题名 | New Evidence for Improving Omega Estimation by Explicitly Considering Horizontal Divergence |
| 英文摘要 | It is well known that the quasi-geostrophic (QG) omega equation with only two contributors respectively associated with vorticity advection (VA) and temperature advection is derived for midlatitude synoptic-scale systems only. Based on reliable reanalysis data, new evidence revealed by cyclonic and anticyclonic cases indicates that forecasters might sometimes experience problems by paying too much attention to the 500-hPa VA when estimating vertical motions not only in subtropical systems but also in systems meeting all the assumptions of the QG omega equation. Our investigations also showed that explicitly considering the vertical profiles of horizontal divergence could allow for better interpretation of vertical motions and weather in these real cases, suggesting that this equation might not be sufficient due to the presence of only two horizontal-divergence-related (HDR) mechanisms and the absence of other HDR mechanisms, e. g., frictional force, mountain barriers, diabatic/adiabatic processes, and acceleration/deceleration of air flows. |
| 资助项目 | [National Key Basic Research Project of China] ; [Chinese NSF key project] ; [Chinese NSF] |
| 语种 | 英语 |
| CSCD记录号 | CSCD:5049620 |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/55877]  |
| 专题 | 应用数学研究所 |
| 作者单位 | 1.中国科学院大气物理研究所 2.辽宁省地震局 3.中国科学院数学与系统科学研究院 |
| 推荐引用方式 GB/T 7714 | Yuan Zhuojian,Qi Jindian,Gao Shouting,et al. New Evidence for Improving Omega Estimation by Explicitly Considering Horizontal Divergence[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2014,31(2):449-456. |
| APA | Yuan Zhuojian,Qi Jindian,Gao Shouting,Feng Yerong,Xu Pengcheng,&Wu Naigeng.(2014).New Evidence for Improving Omega Estimation by Explicitly Considering Horizontal Divergence.ADVANCES IN ATMOSPHERIC SCIENCES,31(2),449-456. |
| MLA | Yuan Zhuojian,et al."New Evidence for Improving Omega Estimation by Explicitly Considering Horizontal Divergence".ADVANCES IN ATMOSPHERIC SCIENCES 31.2(2014):449-456. |
入库方式： OAI收割
来源：数学与系统科学研究院
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