DOI: 10.1007/s00382-015-2543-z
Scopus记录号: 2-s2.0-84947488144
论文题名: Crop growth and irrigation interact to influence surface fluxes in a regional climate-cropland model (WRF3.3-CLM4crop)
作者: Lu Y. ; Jin J. ; Kueppers L.M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期: 2017-11-12 起始页码: 3347
结束页码: 3363
语种: 英语
英文关键词: Climate
; CLM
; Dynamic crop growth
; Irrigation
; Surface energy flux
; WRF
英文摘要: In this study, we coupled Version 4.0 of the Community Land Model that includes crop growth and management (CLM4crop) into the Weather Research and Forecasting (WRF) model Version 3.3 to better represent interactions between climate and agriculture. We evaluated the performance of the coupled model (WRF3.3-CLM4crop) by comparing simulated crop growth and surface climate to multiple observational datasets across the continental United States. The results showed that although the model with dynamic crop growth overestimated leaf area index (LAI) and growing season length, interannual variability in peak LAI was improved relative to a model with prescribed crop LAI and growth period, which has no environmental sensitivity. Adding irrigation largely improved daily minimum temperature but the RMSE is still higher over irrigated land than non-irrigated land. Improvements in climate variables were limited by an overall model dry bias. However, with addition of an irrigation scheme, soil moisture and surface energy flux partitioning were largely improved at irrigated sites. Irrigation effects were sensitive to crop growth: the case with prescribed crop growth underestimated irrigation water use and effects on temperature and overestimated soil evaporation relative to the case with dynamic crop growth in moderately irrigated regions. We conclude that studies examining irrigation effects on weather and climate using coupled climate–land surface models should include dynamic crop growth and realistic irrigation schemes to better capture land surface effects in agricultural regions. © 2015, Springer-Verlag Berlin Heidelberg. 资助项目: USDA, U.S. Department of Agriculture
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53929
Appears in Collections: 过去全球变化的重建
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作者单位: Sierra Nevada Research Institute, University of California, Merced, Merced, CA, United States; Department of Watershed Sciences, Utah State University, Logan, UT, United States; Department of Plants, Soil, and Climate, Utah State University, Logan, UT, United States; Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
Recommended Citation:
Lu Y.,Jin J.,Kueppers L.M.. Crop growth and irrigation interact to influence surface fluxes in a regional climate-cropland model (WRF3.3-CLM4crop)[J]. Climate Dynamics,2015-01-01,45(2017-11-12)