气候变化领域集成服务门户(CCPortal): Characterizing Uncertainties in Ground Truth of Precipitation Over Complex Terrain Through High-Resolution Numerical Modeling

CCPortal

DOI	10.1029/2020GL091950
	Characterizing Uncertainties in Ground Truth of Precipitation Over Complex Terrain Through High-Resolution Numerical Modeling
	Ouyang, Lin; Lu, Hui; Yang, Kun; Leung, L. Ruby; Wang, Yan; Zhao, Long; Zhou, Xu; Lazhu; Chen, Yingying; Jiang, Yaozhi; Yao, Xiangnan
通讯作者	Lu, H (通讯作者)
发表日期	2021
ISSN	0094-8276
EISSN	1944-8007
卷号	48 期号:10
英文摘要	Ground observation of precipitation over complex terrain is subject to large uncertainties due to inadequate sampling. This study explores a method that combines limited gauge data and a high-resolution numerical simulation to quantify the precipitation uncertainties in central Himalaya. Specifically, the Coefficient of spatial Variability (CV) of precipitation and the minimum Number of Required Stations (NRS) to obtain areal-mean precipitation ground truth values within a 0.25 degrees area are investigated using fine-scale meteorological simulation at 1.5 km grid spacing. Evaluation over a densely-gauged area demonstrates comparable CV and NRS values between station observations and simulations. The simulated CV and NRS values in a larger area show a strong and positive dependence on each other and an expected positive (negative) correlation with topographic complexity (temporal scale). The proposed method sheds lights on evaluating precipitation products and holds promise for informing the layout of rain gauge networks in complex terrain.
关键词	OROGRAPHIC FORM DRAG WINTER PRECIPITATION GLOBAL PRECIPITATION GAUGE OBSERVATIONS SURFACE-HYDROLOGY RAINFALL RADAR VARIABILITY IMPLEMENTATION ERRORS
英文关键词	complex terrain; high‐ resolution simulation; precipitation; spatial variability; uncertainty
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000658600300029
来源期刊	GEOPHYSICAL RESEARCH LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260465
推荐引用方式 GB/T 7714	Ouyang, Lin,Lu, Hui,Yang, Kun,et al. Characterizing Uncertainties in Ground Truth of Precipitation Over Complex Terrain Through High-Resolution Numerical Modeling[J]. 中国科学院青藏高原研究所,2021,48(10).
APA	Ouyang, Lin.,Lu, Hui.,Yang, Kun.,Leung, L. Ruby.,Wang, Yan.,...&Yao, Xiangnan.(2021).Characterizing Uncertainties in Ground Truth of Precipitation Over Complex Terrain Through High-Resolution Numerical Modeling.GEOPHYSICAL RESEARCH LETTERS,48(10).
MLA	Ouyang, Lin,et al."Characterizing Uncertainties in Ground Truth of Precipitation Over Complex Terrain Through High-Resolution Numerical Modeling".GEOPHYSICAL RESEARCH LETTERS 48.10(2021).