Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021WR030573 |
Cooling effects revealed by modeling of wetlands and land-atmosphere interactions | |
Z. Zhang; F. Chen; M. Barlage; L.E. Bortolotti; J. Famiglietti; Z. Li; X. Ma; Y. Li | |
2022-02-11 | |
发表期刊 | Water Resources Research
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出版年 | 2022 |
英文摘要 | Wetlands are important ecosystems – they provide vital hydrological and ecological services such as regulating floods, storing carbon, and providing wildlife habitat. The ability to simulate their spatial extents and hydrological processes is important for valuing wetlands’ function. The purpose of this study is to dynamically represent the spatial extents and hydrological processes of wetlands and investigate their feedback to regional climate in the Prairie Pothole Region (PPR) of North America, where a large number of wetlands exist. In this study, we incorporated a wetland scheme into the Noah-MP Land Surface Model with two major modifications: (1) modifying the sub-grid saturation fraction for spatial wetland extent; (2) incorporating a dynamic wetland storage to simulate hydrological processes. This scheme was evaluated at a fen site in central Saskatchewan, Canada and applied regionally in the PPR with 13-year climate forcing produced by a high-resolution convection-permitting model. The differences between wetland and no-wetland simulations are significant, with increasing latent heat and evapotranspiration while suppressing sensible heat and runoff in the wetland scheme. Finally, the dynamic wetland scheme was applied in the Weather Research & Forecasting model (WRF). The wetlands scheme not only modifies the surface energy balance but also interacts with the lower atmosphere, shallowing the planetary boundary layer height and promoting cloud formation. A cooling effect of 1∼3°C in summer temperature is evident where wetlands are abundant. In particular, the wetland simulation shows reduction in the number of hot days for more than 10 days over the summer of 2006, when a long-lasting heatwave occurred. This research has great implications for land surface/regional climate modeling and wetland conservation, especially in mitigating extreme heatwaves under climate change. |
领域 | 资源环境 |
URL | 查看原文 |
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/346713 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Z. Zhang,F. Chen,M. Barlage,et al. Cooling effects revealed by modeling of wetlands and land-atmosphere interactions[J]. Water Resources Research,2022. |
APA | Z. Zhang.,F. Chen.,M. Barlage.,L.E. Bortolotti.,J. Famiglietti.,...&Y. Li.(2022).Cooling effects revealed by modeling of wetlands and land-atmosphere interactions.Water Resources Research. |
MLA | Z. Zhang,et al."Cooling effects revealed by modeling of wetlands and land-atmosphere interactions".Water Resources Research (2022). |
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