Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2018.09.004 |
Sensitivity of WRF simulations with the YSU PBL scheme to the lowest model level height for a sea fog event over the Yellow Sea | |
Yang, Yue1; Hu, Xiao-Ming2,3,4; Gao, Shanhong1; Wang, Yongming4 | |
2019 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2019 |
卷号 | 215页码:253-267 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The lowest model level is the interface of energy and mass exchanging between the surface and planetary boundary layer (PBL). Previous studies mostly examined the role of the lowest model level height (z(1)) in simulating the continental PBL processes. The impact of z(1) on simulating marine processes (e.g., sea fog), however, remains unclear. The present study explores the sensitivity of the Weather Research and Forecasting (WRF) model with the Yonsei University (YSU) PBL scheme to z(1) for an advection fog event occurred on 27 March 2012 over the Yellow Sea. Seven experiments with various z(1) (28, 22, 14, 8, 4, 1 and 0.4 m) are conducted. Evaluations for the continental PBL indicate that z(1) below 8 m is irrational in simulating surface temperature and PBL height over land. However, the model with z(1) = 8 m gives the best performance in terms of reproducing sea fog. When z(1) gets below 8 m, the sea fog occurs too early and the fog area is too small. As z(1) exceeds 8 m, the fog forms too late and the fog area becomes underestimated. These model sensitivities can be explained by the impact of z(1) on virtual potential temperature at z(1) [theta(v)(z(1))]. Since the heat capacity of the air in the lowest model layer is proportional to z(1), a lower (higher) z(1) causes a quicker (slower) response of theta(v)(z(1)) to surface cooling, thus leading to an earlier (later) sea fog formation. After the fog onset, especially for a lower z(1), the variation of theta(v)(z(1)) is dominated by turbulent heating that transports warmer air above to the very shallow lowest model layer, resulting in a lower vertical growth and even earlier dissipation of the sea fog. |
英文关键词 | Lowest model level height WRF YSU PBL scheme Sea fog Virtual potential temperature at z(1) |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447575100019 |
WOS关键词 | PLANETARY BOUNDARY-LAYER ; HIGH-RESOLUTION SIMULATIONS ; RADIATION FOG ; VERTICAL RESOLUTION ; PHYSICAL PARAMETERIZATIONS ; NUMERICAL-SIMULATION ; LIFE-CYCLE ; PART I ; IMPACT ; MARINE |
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/38055 |
专题 | 地球科学 |
作者单位 | 1.Ocean Univ China, Coll Ocean & Atmospher Sci, Key Lab Phys Oceanog, 5 Yushan Rd, Qingdao 266100, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Key Lab Aerosol Cloud Precipitat China Meteorol A, Nanjing 210044, Jiangsu, Peoples R China; 3.Univ Oklahoma, Ctr Anal & Predict Storms, Norman, OK 73072 USA; 4.Univ Oklahoma, Sch Meteorol, Norman, OK 73072 USA |
推荐引用方式 GB/T 7714 | Yang, Yue,Hu, Xiao-Ming,Gao, Shanhong,et al. Sensitivity of WRF simulations with the YSU PBL scheme to the lowest model level height for a sea fog event over the Yellow Sea[J]. ATMOSPHERIC RESEARCH,2019,215:253-267. |
APA | Yang, Yue,Hu, Xiao-Ming,Gao, Shanhong,&Wang, Yongming.(2019).Sensitivity of WRF simulations with the YSU PBL scheme to the lowest model level height for a sea fog event over the Yellow Sea.ATMOSPHERIC RESEARCH,215,253-267. |
MLA | Yang, Yue,et al."Sensitivity of WRF simulations with the YSU PBL scheme to the lowest model level height for a sea fog event over the Yellow Sea".ATMOSPHERIC RESEARCH 215(2019):253-267. |
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