How essential of the balance between large and small scale features to reproduce precipitation during a sudden sharp turn from drought to flood
文献类型：期刊论文
| 作者 | Ma, Yuanyuan1,2; Yang, Yi1; Wang, Chenghai1 |
| 刊名 | CLIMATE DYNAMICS
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 52期号:7-8页码:5013-5029 |
| 关键词 | Sudden turn from drought to flood Conventional continuous simulation Grid nudging Spectral nudging Re-initialization |
| ISSN号 | 0930-7575 |
| DOI | 10.1007/s00382-018-4445-3 |
| 通讯作者 | Yang, Yi(yangyi@lzu.edu.cn) ; Wang, Chenghai(wch@lzu.edu.cn) |
| 英文摘要 | Sudden turn from drought to flood (STDF) is a unique representation of intra-seasonal extreme events and occurs frequently. However, it is notoriously difficult to represent in climate simulations due to the accumulation of model errors. This study uses a regional climate model (RCM) with different initialization and nudging schemes to explore effective approaches for capturing a STDF event. Results show that the conventional continuous integration with single initialization cannot reproduce the STDF event, while nudging or re-initialization can. Furthermore, spectral nudging and re-initialization outperform the conventional continuous simulation in reproducing precipitation features, but grid nudging induces the largest biases for precipitation though it has the smallest biases for other meteorological elements. Scale separation analysis shows that the large-scale features of the conventional continuous simulation drift far from the actual fields and force erroneous small-scale features, whereas the nudging and re-initialization successfully prevent the model from drifting away from the forcing fields at large-scales. The different performance for simulating precipitation among spectral nudging, re-initialization and grid nudging can be attributed to that the former two methods generate their own small-scale information via the RCM, while grid nudging over-suppresses the small-scale information while retaining the large-scale features. The difference in small-scale features affects the simulation of different moisture fluxes and convergences, as well as clouds, and then results in diverse precipitation. These results illustrate that both the consistency with large-scale features and the local variability from small-scale features are both robust factors for reproducing precipitation features during extreme events using RCMs. |
| 收录类别 | SCI |
| WOS关键词 | REGIONAL CLIMATE MODEL ; SIMULATIONS ; SENSITIVITY ; PATTERNS ; EVENTS |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000467187600067 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555475 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yang, Yi; Wang, Chenghai |
| 作者单位 | 1.Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Yuanyuan,Yang, Yi,Wang, Chenghai. How essential of the balance between large and small scale features to reproduce precipitation during a sudden sharp turn from drought to flood[J]. CLIMATE DYNAMICS,2019,52(7-8):5013-5029. |
| APA | Ma, Yuanyuan,Yang, Yi,&Wang, Chenghai.(2019).How essential of the balance between large and small scale features to reproduce precipitation during a sudden sharp turn from drought to flood.CLIMATE DYNAMICS,52(7-8),5013-5029. |
| MLA | Ma, Yuanyuan,et al."How essential of the balance between large and small scale features to reproduce precipitation during a sudden sharp turn from drought to flood".CLIMATE DYNAMICS 52.7-8(2019):5013-5029. |
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来源：寒区旱区环境与工程研究所
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