globalchange  > 气候减缓与适应
DOI: 10.1029/2018JG004494
Scopus记录号: 2-s2.0-85049862463
论文题名:
A Unique Combination of Aerodynamic and Surface Properties Contribute to Surface Cooling in Restored Wetlands of the Sacramento-San Joaquin Delta, California
作者: Hemes K.S.; Eichelmann E.; Chamberlain S.D.; Knox S.H.; Oikawa P.Y.; Sturtevant C.; Verfaillie J.; Szutu D.; Baldocchi D.D.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期:7
起始页码: 2072
结束页码: 2090
语种: 英语
英文关键词: biophysical ; restoration ; surface temperature ; wetlands
英文摘要: Land use change and management affect climate by altering both the biogeochemical and biophysical interactions between the land and atmosphere. Whereas climate policy often emphasizes the biogeochemical impact of land use change, biophysical impacts, including changes in reflectance, energy partitioning among sensible and latent heat exchange, and surface roughness, can attenuate or enhance biogeochemical effects at local to regional scales. This study analyzes 3 years (2015–2017) of turbulent flux and meteorological data across three contrasting wetland restoration sites and one agricultural site, colocated in the Sacramento-San Joaquin Delta, California, USA, to understand if the biophysical impacts of freshwater wetland restoration can be expected to attenuate or enhance the potential biogeochemical benefits. We show that despite absorbing more net radiation, restored wetlands have the potential to cool daytime surface temperature by up to 5.1 °C, as compared to a dominant drained agricultural land use. Wetland canopy structure largely determines the magnitude of surface temperature cooling, with wetlands that contain areas of open water leading to enhanced nighttime latent heat flux and reduced diurnal temperate range. Daytime surface cooling could be important in ameliorating physiological stress associated with hotter and drier conditions and could also promote boundary layer feedbacks at the local to regional scale. With a renewed focus on the mitigation and adaptation potential of natural and working lands, we must better understand the role of biophysical changes, especially in novel land use transitions like wetland restoration. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113668
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作者单位: Ecosystem Science Division, Department of Environmental Science, Policy and Management, University of California, Berkeley, CA, United States; Department of Earth System Science, Stanford University, Stanford, CA, United States; California State University, East Bay, Hayward, CA, United States; National Ecological Observatory Network, Battelle Ecology, Boulder, CO, United States

Recommended Citation:
Hemes K.S.,Eichelmann E.,Chamberlain S.D.,et al. A Unique Combination of Aerodynamic and Surface Properties Contribute to Surface Cooling in Restored Wetlands of the Sacramento-San Joaquin Delta, California[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(7)
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