Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL075754 |
Unified Spectrum of Tropical Rainfall and Waves in a Simple Stochastic Model | |
Stechmann, Samuel N.1,2; Hottovy, Scott3 | |
2017-10-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:20 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | In the tropics, rainfall is coupled with atmospheric dynamics in ways that are not fully understood, and often different mechanisms are proposed to underlie different modes of variability. Here it is shown that a unified model with a simple form can produce many different modes of variability. In particular, this includes the Madden-Julian Oscillation and convectively coupled equatorial waves. The model predicts the length scales, time scales, structures, and spatiotemporal variability of these modes reasonably well for a simple model. Furthermore, the model produces a background spectrum of rainfall that resembles spatiotemporal red noise and is only weakly coupled with wave dynamics. The full spectrum is also shown to be shaped by antiresonance, whereby rainfall oscillations are prevented from occurring at the oscillation frequencies of dry waves. To produce all of these aspects simultaneously, a key factor is differing roles of lower and middle tropospheric water vapor. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416761600073 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; COUPLED EQUATORIAL WAVES ; SIMPLE MULTICLOUD PARAMETERIZATION ; GRAVITY-WAVES ; KELVIN WAVES ; INTRASEASONAL OSCILLATIONS ; VERTICAL STRUCTURE ; CLIMATE MODELS ; PART I ; CONVECTIVE ADJUSTMENT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27663 |
专题 | 气候变化 |
作者单位 | 1.Univ Wisconsin, Dept Math, Madison, WI 53706 USA; 2.Univ Wisconsin, Dept Atmospher & Ocean Sci, Madison, WI 53706 USA; 3.US Naval Acad, Dept Math, Annapolis, MD 21402 USA |
推荐引用方式 GB/T 7714 | Stechmann, Samuel N.,Hottovy, Scott. Unified Spectrum of Tropical Rainfall and Waves in a Simple Stochastic Model[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(20). |
APA | Stechmann, Samuel N.,&Hottovy, Scott.(2017).Unified Spectrum of Tropical Rainfall and Waves in a Simple Stochastic Model.GEOPHYSICAL RESEARCH LETTERS,44(20). |
MLA | Stechmann, Samuel N.,et al."Unified Spectrum of Tropical Rainfall and Waves in a Simple Stochastic Model".GEOPHYSICAL RESEARCH LETTERS 44.20(2017). |
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