Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD029755 |
Effects of Mosaic Land Use on Dynamically Downscaled WRF Simulations of the Contiguous United States | |
Mallard, Megan S.; Spero, Tanya L. | |
2019-08-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:16页码:9117-9140 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The representation of land use (LU) in meteorological modeling strongly influences the simulation of fluxes of heat, moisture, and momentum; affecting the accuracy of 2-m temperature and precipitation. Here the Weather Research and Forecasting (WRF) model is used with the Noah land surface model to compare a mosaic approach, which accounts for subgrid scale variability of LU types, to the default option, which only considers the dominant category in each grid cell. Three-year historical dynamically downscaled WRF simulations are generated using a 12-km domain over the contiguous United States to assess the sensitivities to using mosaic LU and to changes to parameters associated with LU and soil categories. Compared to dominant LU, mosaic LU features decreased coverage of forest and agricultural types and increased low-density urban LU throughout much of the eastern and central U.S. However, highly urbanized areas show the opposite trend, as mosaic LU represents partial greenspace within areas that are exclusively urban within dominant LU. Mosaic LU results in widespread increases in sensible heat fluxes and 2-m temperatures, with reductions in latent heat flux, 2-m mixing ratio, and monthly precipitation across the central and eastern U.S. These changes exacerbate an existing warm bias found with dominant LU but reduce overestimations of precipitation. Highly urbanized areas in the eastern U.S. tend to have cooler, more realistic temperatures with mosaic LU relative to dominant LU. A pair of runs with updated surface parameters corroborates these results. Overall, differences between the simulations are largely attributable to their representations of urban LU. |
英文关键词 | downscaling WRF regional climate model land use mosaic land use Noah land surface model |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000490762800014 |
WOS关键词 | FRITSCH CONVECTIVE PARAMETERIZATION ; REGIONAL CLIMATE SIMULATIONS ; AIR-QUALITY ; WEATHER RESEARCH ; COVER DATABASE ; SURFACE MODEL ; HEAT WAVES ; PRECIPITATION ; SENSITIVITY ; ATMOSPHERE |
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/186150 |
专题 | 气候变化 |
作者单位 | US EPA, Natl Exposure Res Lab, Res Triangle Pk, NC 27711 USA |
推荐引用方式 GB/T 7714 | Mallard, Megan S.,Spero, Tanya L.. Effects of Mosaic Land Use on Dynamically Downscaled WRF Simulations of the Contiguous United States[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(16):9117-9140. |
APA | Mallard, Megan S.,&Spero, Tanya L..(2019).Effects of Mosaic Land Use on Dynamically Downscaled WRF Simulations of the Contiguous United States.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(16),9117-9140. |
MLA | Mallard, Megan S.,et al."Effects of Mosaic Land Use on Dynamically Downscaled WRF Simulations of the Contiguous United States".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.16(2019):9117-9140. |
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