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DOI | 10.1175/JAS-D-19-0045.1 |
Nonuniqueness in a Single-Column Model for Moist Convection | |
Turner, M. R.1; Norbury, J.2 | |
2020-03-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2020 |
卷号 | 77期号:3页码:1001-1018 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | We investigate a moist atmospheric column convection model by considering the atmosphere as a single vertical column of air parcels, each of which contains water vapor. The moist convective adjustment of both air and water mass in the column is considered from an (unstable) initial state to a statically stable final configuration of parcels. Two variations of an algorithm based upon swapping neighboring parcels are compared: after swapping, no parcels remain supersaturated. The results of these algorithms are compared directly with those of the adjustment algorithm of Cheng et al., which adjusts an atmospheric column to achieve the global maximum of a relevant cost functional. Two examples are considered: in the first, the algorithms adjust to similar arrangements, showing that the global maximum of the functional is the dynamically preferred state, while in the second, the algorithms adjust to significantly different states. Thus, we identify a nonuniqueness to the solution to the adjustment problem in terms of local and global cost functional maximizers. We then discuss the relevance of this nonuniqueness to numerical prediction in weather and climate models. |
英文关键词 | Convection |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000526580200001 |
WOS关键词 | CUMULUS PARAMETERIZATION ; AVAILABLE ENERGY ; DEEP CONVECTION ; DIURNAL CYCLE ; SCHEME ; PRECIPITATION ; STABILITY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280289 |
专题 | 地球科学 |
作者单位 | 1.Univ Surrey, Dept Math, Guildford, Surrey, England; 2.Univ Oxford, Math Inst, Oxford, England |
推荐引用方式 GB/T 7714 | Turner, M. R.,Norbury, J.. Nonuniqueness in a Single-Column Model for Moist Convection[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2020,77(3):1001-1018. |
APA | Turner, M. R.,&Norbury, J..(2020).Nonuniqueness in a Single-Column Model for Moist Convection.JOURNAL OF THE ATMOSPHERIC SCIENCES,77(3),1001-1018. |
MLA | Turner, M. R.,et al."Nonuniqueness in a Single-Column Model for Moist Convection".JOURNAL OF THE ATMOSPHERIC SCIENCES 77.3(2020):1001-1018. |
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