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DOI | 10.1175/JAS-D-16-0368.1 |
A Numerical Investigation of the Potential Effects of Aerosol-Induced Warming and Updraft Width and Slope on Updraft Intensity in Deep Convective Clouds | |
Lebo, Zachary | |
2018-02-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:2页码:535-554 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The effects of aerosol perturbations on deep convective clouds have received considerable attention in the recent literature, especially from a modeling perspective. The published responses in precipitation amount and updraft strength vary in both sign and magnitude and may be the result of different models and parameterizations. Here, a simple numerical framework is employed to determine the potential effects of warming both below the freezing level ( warm invigoration) and above the freezing level (mixed-phase invigoration) due to increased aerosol loading. The role of updraft width and slope in the same framework is also examined, highlighting the relative importance of each factor on the resulting updraft strength. The results show that the potential effects of warm invigoration are 2-3 times larger than for mixed-phase invigoration. However, a relatively small response in updraft velocity to warming is found, especially in comparison with the predicted changes in updraft velocity due to small differences in system slope and width, with 87.7% and 96.4% of the subadiabatic and adiabatic realizations, respectively, showing changes in updraft velocity of less than 15% for warmings of no more than 2 degrees C. This result suggests that observations of the aerosol effect will be largely muddled by the natural variability of convective updraft width and slope (which are related to environmental wind shear). |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425753300009 |
WOS关键词 | SQUALL LINES ; PART I ; ATMOSPHERIC AEROSOLS ; EFFECTIVE BUOYANCY ; MODEL ; IMPACTS ; PRECIPITATION ; PRESSURE ; DYNAMICS ; STORMS |
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/29404 |
专题 | 地球科学 |
作者单位 | Univ Wyoming, Dept Atmospher Sci, Laramie, WY 82071 USA |
推荐引用方式 GB/T 7714 | Lebo, Zachary. A Numerical Investigation of the Potential Effects of Aerosol-Induced Warming and Updraft Width and Slope on Updraft Intensity in Deep Convective Clouds[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(2):535-554. |
APA | Lebo, Zachary.(2018).A Numerical Investigation of the Potential Effects of Aerosol-Induced Warming and Updraft Width and Slope on Updraft Intensity in Deep Convective Clouds.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(2),535-554. |
MLA | Lebo, Zachary."A Numerical Investigation of the Potential Effects of Aerosol-Induced Warming and Updraft Width and Slope on Updraft Intensity in Deep Convective Clouds".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.2(2018):535-554. |
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