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DOI10.1029/2020GL091950
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
ISSN0094-8276
EISSN1944-8007
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 DRAGWINTER PRECIPITATIONGLOBAL PRECIPITATIONGAUGE OBSERVATIONSSURFACE-HYDROLOGYRAINFALLRADARVARIABILITYIMPLEMENTATIONERRORS
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).
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