Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD026472 |
On the diurnal cycle of surface energy fluxes in the North American monsoon region using the WRF-Hydro modeling system | |
Xiang, Tiantian1; Vivoni, Enrique R.1,2; Gochis, David J.3; Mascaro, Giuseppe1 | |
2017-09-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The diurnal cycles of surface energy fluxes are important drivers of atmospheric boundary layer development and convective precipitation, particularly in regions with heterogeneous land surface conditions such as those under the influence of the North American monsoon (NAM). Characterization of diurnal surface fluxes and their controls has not been well constrained due to the paucity of observations in the NAM region. In this study, we evaluate the performance of the uncoupled WRF-Hydro modeling system in its ability to represent soil moisture, turbulent heat fluxes, and surface temperature observations and compare these to operational analyses from other commonly used land surface models (LSMs). After a rigorous model evaluation, we quantify how the diurnal cycles of surface energy fluxes vary during the warm season for the major ecosystems in a regional basin. We find that the diurnal cycle of latent heat flux is more sensitive to ecosystem type than sensible heat flux due to the response of plant transpiration to variations in soil water content. Furthermore, the peak timing of precipitation affects the shape and magnitude of the diurnal cycle of plant transpiration in water-stressed ecosystems, inducing mesoscale heterogeneity in land surface conditions between the major ecosystems within the basin. Comparisons to other LSMs indicate that ecosystem differences in the diurnal cycle of turbulent fluxes are underestimated in these products. While this study shows how land surface heterogeneity affects the simulated diurnal cycle of turbulent fluxes, additional coupled modeling efforts are needed to identify the potential impacts of these spatial differences on convective precipitation. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416387300005 |
WOS关键词 | COMPLEX TERRAIN ; DATA ASSIMILATION ; UNITED-STATES ; SEMIARID ENVIRONMENT ; TOPOGRAPHIC TRANSECT ; CONTINENTAL-SCALE ; SOIL HYDROLOGY ; CLIMATE MODELS ; MODIS LAI ; MEXICO |
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/34011 |
专题 | 气候变化 |
作者单位 | 1.Arizona State Univ, Sch Sustainable Engn & Built Environm, Tempe, AZ 85281 USA; 2.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85281 USA; 3.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Xiang, Tiantian,Vivoni, Enrique R.,Gochis, David J.,et al. On the diurnal cycle of surface energy fluxes in the North American monsoon region using the WRF-Hydro modeling system[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(17). |
APA | Xiang, Tiantian,Vivoni, Enrique R.,Gochis, David J.,&Mascaro, Giuseppe.(2017).On the diurnal cycle of surface energy fluxes in the North American monsoon region using the WRF-Hydro modeling system.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(17). |
MLA | Xiang, Tiantian,et al."On the diurnal cycle of surface energy fluxes in the North American monsoon region using the WRF-Hydro modeling system".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.17(2017). |
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