气候变化领域集成服务门户(CCPortal): Time Evolution and Diurnal Variability of the Parametric Sensitivity of Turbine-Height Winds in the MYNN-EDMF Parameterization

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DOI	10.1029/2020JD034000
	Time Evolution and Diurnal Variability of the Parametric Sensitivity of Turbine-Height Winds in the MYNN-EDMF Parameterization
	Berg L.K.; Liu Y.; Yang B.; Qian Y.; Krishnamurthy R.; Sheridan L.; Olson J.
发表日期	2021
ISSN	2169897X
卷号	126 期号:11
英文摘要	The Mellor-Yamada-Nakanishi-Niino (MYNN) parameterization applied in the Weather Research and Forecasting (WRF) model has been augmented to include the Eddy-Diffusion Mass-Flux (EDMF) approach to better represent transport by boundary-layer eddies. This change includes the addition of new parameters associated with convective updrafts and boundary-layer clouds that lead to new parametric sensitivities in the turbine-height wind speed compared to simulations using the standard MYNN parameterization. This work builds on efforts focused on WRF's MYNN parameterization by examining the sensitivity of wind speed to parameters in the MYNN-EDMF parameterization as a function of simulation duration. Summer and winter periods were selected from the second Wind Forecast Improvement Project (WFIP2). Five sets of simulations were completed for each season, with durations ranging from 2 to 6 days. The results show that the sensitivity to the new parameters associated with the EDMF scheme is generally small compared to other parameters in clear conditions, but the sensitivity to the entrainment becomes significant when the updraft fraction is large. The spread in the perturbed parameter ensembles was found to grow quickly over the first 8–19 h in the summer simulations and 17–24 h in the winter simulations with little change after that, regardless of the simulation length. A strong diurnal cycle in the parameter sensitivity was also found associated with the atmospheric stability, as well as an increase in the sensitivity to the entrainment parameter used in the EDMF parameterization that is associated with increasing fractional area covered by plumes. © 2021. American Geophysical Union. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
英文关键词	MYNN-EDMF; turbine-height winds; uncertainty quantification; WRF
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185164
作者单位	Pacific Northwest National Laboratory, Richland, WA, United States; CMA-NJU Joint Laboratory for Climate Prediction Studies and School of Atmospheric Sciences, Nanjing University, Nanjing, China; NOAA-Global Systems Laboratory, Boulder, CO, United States
推荐引用方式 GB/T 7714	Berg L.K.,Liu Y.,Yang B.,et al. Time Evolution and Diurnal Variability of the Parametric Sensitivity of Turbine-Height Winds in the MYNN-EDMF Parameterization[J],2021,126(11).
APA	Berg L.K..,Liu Y..,Yang B..,Qian Y..,Krishnamurthy R..,...&Olson J..(2021).Time Evolution and Diurnal Variability of the Parametric Sensitivity of Turbine-Height Winds in the MYNN-EDMF Parameterization.Journal of Geophysical Research: Atmospheres,126(11).
MLA	Berg L.K.,et al."Time Evolution and Diurnal Variability of the Parametric Sensitivity of Turbine-Height Winds in the MYNN-EDMF Parameterization".Journal of Geophysical Research: Atmospheres 126.11(2021).