Simulations of stable isotopic fractionation in mixed cloud in middle latitudes - Taking the precipitation at Urumqi as an example
文献类型：期刊论文
| 作者 | Zhang, XP; Yao, TD; Liu, JM; Lide, T; Nakawo, M |
| 刊名 | ADVANCES IN ATMOSPHERIC SCIENCES
 |
| 出版日期 | 2003-03-01 |
| 卷号 | 20期号:2页码:261-268 |
| 关键词 | stable isotopes fractionation kinetic effect temperature effect meteoric water line |
| ISSN号 | 0256-1530 |
| 通讯作者 | Zhang, XP() |
| 英文摘要 | The introduced mathematical model takes into account the role of the kinetic fractionation effect in a supersaturation environment at the ice surface as liquid and solid phases coexist in mixed cloud. Using the model, the temperature effect of stable isotopes in precipitation is simulated under different cooling conditions. The rate of change of delta(18)O against temperature in the process of wet adiabatic cooling is smaller than in the process of isobaric cooling under the same humidity. The increasing supersaturation ratio at the ice surface, Si, leads to the strengthening of the kinetic fractionation effect. The kinetic fractionation function makes the synthesis fractionation factor decreased and the change of delta(18)O with temperature flatted, compared with that in the equilibrium state. The simulated results show that the slope parameter b and the intercept d of the meteoric water line (MWL), deltaD = bdelta(18)O+d, in wet adiabatic cooling are both greater than those in isobaric cooling. The global MWL lies between the two MWLs simulated under wet adiabatic and isobaric cooling processes, respectively. The magnitudes of b and d are directly proportional to Si. The greater the Si, the stronger the kinetic fractionation effect, and thus the greater the b and d, and vice versa. However, b and d have low sensitivity to the liquid-water contents in the cloud . Using the kinetic fractionation model, the variation of stable isotopes in precipitation at Urumqi is simulated. The simulated stable isotopic ratio vs temperature and the 6D vs V80 curves are very consistent with the actual regressions and MWL at Urumqi, respectively. |
| 收录类别 | SCI |
| WOS关键词 | O-18 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000182072100012 |
| 出版者 | CHINA OCEAN PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556909 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhang, XP |
| 作者单位 | 1.Hunan Normal Univ, Coll Resources & Environm Sci, Changsha 410081, Peoples R China 2.Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lab Ice & Cold Reg Environm, Lanzhou 730000, Peoples R China 4.Res Inst Human & Nat, Kyoto 6020878, Japan |
| 推荐引用方式 GB/T 7714 | Zhang, XP,Yao, TD,Liu, JM,et al. Simulations of stable isotopic fractionation in mixed cloud in middle latitudes - Taking the precipitation at Urumqi as an example[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2003,20(2):261-268. |
| APA | Zhang, XP,Yao, TD,Liu, JM,Lide, T,&Nakawo, M.(2003).Simulations of stable isotopic fractionation in mixed cloud in middle latitudes - Taking the precipitation at Urumqi as an example.ADVANCES IN ATMOSPHERIC SCIENCES,20(2),261-268. |
| MLA | Zhang, XP,et al."Simulations of stable isotopic fractionation in mixed cloud in middle latitudes - Taking the precipitation at Urumqi as an example".ADVANCES IN ATMOSPHERIC SCIENCES 20.2(2003):261-268. |
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来源：寒区旱区环境与工程研究所
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