Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD027035 |
The Importance of Soil-Type Contrast in Modulating August Precipitation Distribution Near the Edwards Plateau and Balcones Escarpment in Texas | |
Hu, Xiao-Ming1,2; Xue, Ming1,2; McPherson, Renee A.3,4 | |
2017-10-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:20 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The Balcones Escarpment in central Texas is a sloped region between the Edwards Plateau and the coastal plain. The metropolitan areas located along the Balcones Escarpment (e.g., San Antonio, Austin, and Dallas-Fort Worth) are prone to heavy rain and devastating flood events. While the associated hydrological issues of the Balcones Escarpment have been extensively studied, the meteorological impacts of the Edwards Plateau and Balcones Escarpment are not well understood. The indeterminate impacts of the thermal and dynamic effects of the Edwards Plateau on August climatological precipitation are investigated in this study using the multisensor Stage IV precipitation data, high-resolution dynamic downscaling, and short-term sensitivity simulations. Analysis results indicate that the total August precipitation east of the Balcones Escarpment is suppressed and precipitation over the eastern part of the Edwards Plateau is enhanced. Locally initiated moist convection in the afternoon contributes most to the total precipitation during August in the region. The dynamic downscaling output captures the spatial pattern of afternoon precipitation, which is well aligned with the simulated upward motions. The clay-based soil types that dominate the Edwards Plateau have great potential to retain soil moisture and limit latent heat fluxes, consequently leading to higher sensible heat flux than over the plain to the east. As a result, vertical motion is induced, triggering the afternoon moist convection over the Edwards Plateau under favorable conditions. In comparison, the sloping terrain plays a smaller role in triggering the convection. Short-term sensitivity simulations for a clear day confirm and further prove such a diagnosis. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000417195200010 |
WOS关键词 | REGIONAL CLIMATE MODEL ; MESOSCALE CONVECTIVE SYSTEM ; WARM-SEASON PRECIPITATION ; BOUNDARY-LAYER STRUCTURE ; WINTER-WHEAT BELT ; DIURNAL-VARIATION ; UNITED-STATES ; NUMERICAL SIMULATIONS ; AIR-QUALITY ; ATMOSPHERIC CIRCULATIONS |
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/32606 |
专题 | 气候变化 |
作者单位 | 1.Univ Oklahoma, Ctr Anal & Predict Storms, Norman, OK 73019 USA; 2.Univ Oklahoma, Sch Meteorol, Norman, OK 73019 USA; 3.Univ Oklahoma, South Cent Climate Sci Ctr, Norman, OK 73019 USA; 4.Univ Oklahoma, Dept Geog & Environm Sustainabil, Norman, OK 73019 USA |
推荐引用方式 GB/T 7714 | Hu, Xiao-Ming,Xue, Ming,McPherson, Renee A.. The Importance of Soil-Type Contrast in Modulating August Precipitation Distribution Near the Edwards Plateau and Balcones Escarpment in Texas[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(20). |
APA | Hu, Xiao-Ming,Xue, Ming,&McPherson, Renee A..(2017).The Importance of Soil-Type Contrast in Modulating August Precipitation Distribution Near the Edwards Plateau and Balcones Escarpment in Texas.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(20). |
MLA | Hu, Xiao-Ming,et al."The Importance of Soil-Type Contrast in Modulating August Precipitation Distribution Near the Edwards Plateau and Balcones Escarpment in Texas".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.20(2017). |
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