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DOI | 10.1029/2018JD028631 |
Influence of Wind Direction on Thermodynamic Properties and Arctic Mixed-Phase Clouds in Autumn at Utqiagvik, Alaska | |
Qiu, Shaoyue; Xi, Baike; Dong, Xiquan | |
2018-09-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:17页码:9589-9603 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Seven years of autumnal ground-based observations (September-November 2002-2008) at the U.S. Department of Energy Atmospheric Radiation Measurement North Slope of Alaska site have been analyzed for addressing the occurrence frequency and macrophysical and microphysical properties of Arctic mixed-phase clouds (AMC), as well as the relationship between environmental parameters and AMC properties. In September and October, AMC occurrence frequency is 20-30% lower during a southerly wind when compared to the other wind directions; in November, the variation of AMC occurrence frequency with wind direction is small. The mean liquid water path in November is about half of that in October and September. When the surface is snow free, temperature (T) and specific humidity (q) profiles during a northerly wind are warmer and moister than those for the southerly wind. Northerly wind profiles have a higher relative humidity to ice (RHi) and lower atmosphere stability. Furthermore, the AMC occurrence frequency has a positive relationship with RHi and a negative relationship with stability. These two points may explain the lower AMC occurrence frequency during a southerly wind. During a northerly wind, AMCs have larger radar reflectivity, wider spectrum width, and larger Doppler velocity signatures. The stronger precipitation for AMC during a northerly wind is possibly due to the cleaner air masses from the ocean (north). With the same amount of q, the radar spectrum width has a higher frequency in the larger bins during a northerly wind. Both T, q, and radar reflectivity, radar spectrum width profiles show evidence of deposition in the sub-cloud layer in September and October. |
英文关键词 | Arctic mixed-phase cloud thermodynamic profile wind direction cloud occurrence frequency cloud microphysical processes cloud vertical structure |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445617500038 |
WOS关键词 | BOUNDARY-LAYER ; CLIMATE-CHANGE ; ATMOSPHERIC RADIATION ; CONDENSATION NUCLEI ; MODEL SIMULATIONS ; REMOTE SENSORS ; TEMPERATURE ; SURFACE ; AMPLIFICATION ; OCEAN |
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/32437 |
专题 | 气候变化 |
作者单位 | Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ 85721 USA |
推荐引用方式 GB/T 7714 | Qiu, Shaoyue,Xi, Baike,Dong, Xiquan. Influence of Wind Direction on Thermodynamic Properties and Arctic Mixed-Phase Clouds in Autumn at Utqiagvik, Alaska[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(17):9589-9603. |
APA | Qiu, Shaoyue,Xi, Baike,&Dong, Xiquan.(2018).Influence of Wind Direction on Thermodynamic Properties and Arctic Mixed-Phase Clouds in Autumn at Utqiagvik, Alaska.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(17),9589-9603. |
MLA | Qiu, Shaoyue,et al."Influence of Wind Direction on Thermodynamic Properties and Arctic Mixed-Phase Clouds in Autumn at Utqiagvik, Alaska".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.17(2018):9589-9603. |
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