Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-1753-2019 |
Kinetic mass-transfer calculation of water isotope fractionation due to cloud microphysics in a regional meteorological model | |
Tsai, I-Chun1; Chen, Wan-Yu2,3; Chen, Jen-Ping2,4; Liang, Mao-Chang5 | |
2019-02-08 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:3页码:1753-1766 |
文章类型 | Article |
语种 | 英语 |
国家 | Taiwan |
英文摘要 | In conventional atmospheric models, isotope exchange between liquid, gas, and solid phases is usually assumed to be in equilibrium, and the highly kinetic phase transformation processes inferred in clouds are yet to be fully investigated. In this study, a two-moment microphysical scheme in the National Center for Atmospheric Research (NCAR) Weather Research and Forecasting (WRF) model was modified to allow kinetic calculation of isotope fractionation due to various cloud microphysical phase-change processes. A case of a moving cold front is selected for quantifying the effect of different factors controlling isotopic composition, including water vapor sources, atmospheric transport, phase transition pathways of water in clouds, and kinetic-versus-equilibrium mass transfer. A base-run simulation was able to reproduce the similar to 50 parts per thousand decrease in delta D that was observed during the frontal passage. Sensitivity tests suggest that all the above factors contributed significantly to the variations in isotope composition. The thermal equilibrium assumption commonly used in earlier studies may cause an overestimate of mean vapor-phase delta D by 11 parts per thousand, and the maximum difference can be more than 20 parts per thousand. Using initial vertical distribution and lower boundary conditions of water stable isotopes from satellite data is critical to obtain successful isotope simulations, without which the delta D in water vapor can be off by about 34 parts per thousand and 28 parts per thousand, respectively. Without microphysical fractionation, the delta D in water vapor can be off by about 25 parts per thousand. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000458116900006 |
WOS关键词 | GENERAL-CIRCULATION MODEL ; PRECIPITATION ; VAPOR ; VARIABILITY ; OXYGEN ; TEMPERATURE ; HYDROGEN ; SCHEME ; SNOW |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/18361 |
专题 | 地球科学 |
作者单位 | 1.Acad Sinica, Res Ctr Environm Changes, Taipei, Taiwan; 2.Natl Taiwan Univ, Dept Atmospher Sci, Taipei, Taiwan; 3.Cent Weather Bur, Taipei, Taiwan; 4.Natl Taiwan Univ, Int Degree Program Climate Change & Sustainable D, Taipei, Taiwan; 5.Acad Sinica, Inst Earth Sci, Taipei, Taiwan |
推荐引用方式 GB/T 7714 | Tsai, I-Chun,Chen, Wan-Yu,Chen, Jen-Ping,et al. Kinetic mass-transfer calculation of water isotope fractionation due to cloud microphysics in a regional meteorological model[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(3):1753-1766. |
APA | Tsai, I-Chun,Chen, Wan-Yu,Chen, Jen-Ping,&Liang, Mao-Chang.(2019).Kinetic mass-transfer calculation of water isotope fractionation due to cloud microphysics in a regional meteorological model.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(3),1753-1766. |
MLA | Tsai, I-Chun,et al."Kinetic mass-transfer calculation of water isotope fractionation due to cloud microphysics in a regional meteorological model".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.3(2019):1753-1766. |
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