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Evaluation of the simulation performance of WRF-Solar for a summer month in China using ground observation network data

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Atmospheric and Oceanic science Letters 2024年

作者： Yue, Xin Tang, Xiao Hu, Bo Chen, keyi Wu, Qizhong Kong, Lei Wu, Huangjian Wang, Zifa Zhu, Jiang School of Atmospheric Science Chengdu University of Information Technology Chengdu China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing China Center for Excellence in Regional Atmospheric Environment Institute of Urban Environment Chinese Academy of Sciences Xiamen China CAS-TWAS Center of Excellence for Climate and Environment Sciences (ICCES) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China College of Global Change and Earth System Science Beijing Normal University Beijing China

Solar energy is a pivotal clean energy source in the transition to carbon neutrality from fossil fuels. However, the intermittent and stochastic characteristics of solar radiation pose challenges for accurate simulation and prediction. Accurately simulating and predicting solar radiation and its variability are crucial for optimizing solar energy utilization. This study conducted simulation experiments using the WRF-Solar model from 25 June to 25 July 2022, to evaluate the accuracy and performance of the simulated solar radiation across China. The simulations covered the whole country with a grid spacing of 27 km and were compared with ground observation network data from the Chinese Ecosystem Research Network. The results indicated that WRF-Solar can accurately capture the spatiotemporal patterns of global horizontal irradiance over China, but there is still an overestimation of solar radiation, and the model underestimates the total cloud cover. The root-mean-square error ranged from 92.83 to 188.13 Wm⁻² and the mean bias (MB) ranged from 21.05 to 56.22 Wm⁻². The simulation showed the smallest MB at Lhasa on the Qinghai–Tibet Plateau, while the largest MB was observed in Southeast China. To enhance the accuracy of solar radiation simulation, the authors compared the Fast All-sky Radiation Model for Solar with the Rapid Radiative Transfer Model for General Circulation Models and found that the former provides better simulation. 摘要准确模拟和预测太阳辐射及其变化对于优化太阳能利用至关重要. 本研究使用WRF-Solar模式对中国2022 年 6 月 25 日至 7 月 25 日的太阳辐射情况进行了深入模拟, 模式网格水平分辨率为27 km, 通过与中国生态系统研究网络 (CERN) 的地面观测网络数据的37个观测站点进行对比, 以评估模式性能. 结果表明: WRF-Solar模式能较好地捕捉到中国上空的辐照度GHI (Global Horizontal Irradiance) 的时空分布特征, 但存在高估太阳辐射量, 以及低估总云量的情况.全国的总辐射模拟均方根误差范围为92.83–188.13 W m⁻², 平均偏差范围为21.05–56.22 W m⁻². 青藏高原拉萨站的偏差最小, 在中国东南部的偏差最大. 为了进一步提升太阳辐射模拟的精确度, 本研究还对比了FARMS与RRTMG辐射方案, 发现FARMS方案的模拟精度更高. © 2024

关键词： China Global horizontal irradiance Ground observation network Model evaluation WRF-Solar

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Characteristic Analysis of Monobit Signal

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Journal of Physics: Conference Series 2021年第1期1738卷

作者： Pengfei Ji Xiao Yang Chenglong Xia Huan Lv State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System Technology National University of Defense Technology Changsha Hunan 410073 China. School of Electronic Science National University of Defense Technology Changsha Hunan 410073 China. Military Representative Office of Rocket Force in Changsha Changsha Hunan 4100205 China.

This paper analyzes the characters of monobit signals and gives the reason why the spurious free dynamic ranges (SFDR) of monobit signals is much lower than those of multi-bit signals. According to our analysis and simulation, if the third harmonic of a monobit signal can be filtered, the SFDR of it can be improved well. Therefore, we give the way to obtain the desired band, which do not contain any third harmonics, and the simulation results are in agreement with our design. Such way can be used to improve the performance of monobit digital receivers in engineering.

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Natural Aggregation Approach based Home Energy Manage system with User Satisfaction Modelling

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IOP Conference Series: Earth and Environmental science 2017年第1期73卷

作者： F J Luo G Ranzi Z Y Dong J Murata School of Civil Engineering University of Sydney Sydney NSW 2006 Australia State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University China School of Electrical Engineering and Telecommunications University of New South Wales Sydney NSW 2052 Australia Department of Electrical Engineering Faculty of Information Science and Electrical Engineering Kyushu University Fukuoka 812-8581 Japan

With the prevalence of advanced sensing and two-way communication technologies, Home Energy Management system (HEMS) has attracted lots of attentions in recent years. This paper proposes a HEMS that optimally schedules the controllable Residential Energy Resources (RERs) in a Time-of-Use (TOU) pricing and high solar power penetrated environment. The HEMS aims to minimize the overall operational cost of the home, and the user's satisfactions and requirements on the operation of different household appliances are modelled and considered in the HEMS. Further, a new biological self-aggregation intelligence based optimization technique previously proposed by the authors, i.e., Natural Aggregation Algorithm (NAA), is applied to solve the proposed HEMS optimization model. Simulations are conducted to validate the proposed method.

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Erratum: Influence of nano layer interface on space charge behavior and trap levels using polyimide sandwich structure

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IEEE Transactions on Dielectrics and Electrical Insulation 2020年第4期27卷 1376-1376页

作者： Shakeel Akram Yan Yang Xin Zhong Shoaib Bhutta Guangning Wu Jerome Castellon Kai Zhou School of Electrical Engineering Southwest Jiaotong University Chengdu China State Key Laboratory of Power Transmission Equipment System Security & New Technology Chongqing University Chongqing China Institut d'Electronique et des Systèmes Université de Montpellier Montpellier France School of Electrical Engineering and Information Sichuan University Chengdu China

Four corrections to formatting errors in IEEE Xplore are provided. They are: 1) On page 3508, Figures 3a and 3b are duplicates; Figures 3e and 3f are duplicates. 2) The word Figure throughout the text is in red font which should be in black font. 3) On page 3514, Shakeel Akram's photo is shown as M. Shoaib Bhutta's photo; M. Shoaib Bhutta's photo is shown as Zhong Xin's photo; Zhong Xin's photo is shown as Shakeel Akram's photo. 4) The corrected paper information should be "IEEE Trans. Dielectr. Electr. Insul., vol. 25, no. 4, pp. 1461-1469, Aug. 2018".

关键词： Space charge Polyimides Power transmission security Sandwich structures Nanostructures

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Performance analysis of parallel replica molecular dynamics

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AIP Conference Proceedings 2018年第1期1978卷

作者： Boyao Zhang Jue Wang Yangde Feng Ji Xiang Lei Wang 1Computer Network Information Center Chinese Academy of Science Department of High Performance Computing Technology and Application Development Beijing China 2University of Chinese Academy of Sciences Beijing China 3State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences China 4School of cybersecurity Chinese Academy of Sciences China

Molecular dynamics simulation is an important tool for studying materials microstructure evolution under radiation effects. It is difficult to simulate atomic diffusion in materials owing to the time-scale limitations of the molecular dynamics method. Accelerated molecular dynamics has been developed as a solution and the parallel replica method is the simplest and most accurate of the accelerated dynamics techniques. The simulation time scale can reach several orders more than the direct molecular dynamics, while retaining the complete atomic detail. In parallel replica method, the entire system is replicated on each of M available parallel or distributed processors, it is in line with the characteristics of high-performance parallel computing and can be optimized from the program level.

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Single-Crystal Graphene Wafers: Epitaxial Growth of 6 in. Single-Crystalline Graphene on a Cu/Ni (111) Film at 750 °C via Chemical Vapor Deposition (Small 22/2019)

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Small 2019年第22期15卷

作者： Xuefu Zhang Tianru Wu Qi Jiang Huishan Wang Hailong Zhu Zhiying Chen Ren Jiang Tianchao Niu Zhuojun Li Youwei Zhang Zhijun Qiu Guanghui Yu Ang Li Shan Qiao Haomin Wang Qingkai Yu Xiaoming Xie State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China Chinese Academy of Sciences Center for Excellence in Superconducting Electronics (CENSE) 865 Chang Ning Road Shanghai 200050 China University of Chinese Academy of Sciences Beijing 100049 China Department of Physics East China Normal University Shanghai 200241 China Herbert Gleiter Institute of Nanoscience College of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 China State Key Laboratory of ASIC and System School of Information Science and Technology Fudan University Shanghai 200433 China School of Physical Science and Technology Shanghai Tech University Shanghai 200031 China

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5G entering into a new era [Guest Editorial]

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China Communications 2017年第12期14卷 iv-vi页

作者： Feifei Gao Changle Li Jun Fang Kaizhi Huang Zhi Quan Chengwen Xing Jianhua Zhang Zhongshan Zhang Liqiang Zhao Yulong Zou Department of Automation Tsinghua University Beijing China State Key Laboratory of Integrated Services Networks Xidian University University of Eletronic Science and Technology of China National Digital Switching System Engineering & Technological Research Center Zhengzhou China College of Information Engineering Shenzhen University School of Information and Electronics Beijing Institute of Technology Beijing University of Posts and Telecommunication School of Computer and Communication Engineering in the University of Science and Technology Beijing State Key Lab. of Integrated Service Networks Xidian University Nanjing University of Posts and Telecommunications (NUPT) Nanjing China

The ever increasing wireless data services, such as imaging, video, audio, multimedia, etc., have demands for the very high speed wireless communications and network, which are unfortunately a bottleneck when combining with the wireline core network. Users' are now expecting high quality of experience with low-cost devices, ubiquitous connectivity, energy efficiency, high reliability, or even ultra-low latency if a vehicle terminal is applied.

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Corrigendum to “Groove-shape-induced bandwidth expansion of spoof surface plasmon polaritons on planar corrugated Goubau line in millimeter-wave range” [Opt. Commun. 380 (2016) 352–356]

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Optics Communications 2018年 407卷 424-424页

作者： Peng Wei XuGuang Guo Cheng Zhang Rui Yang YiMing Zhu Engineering Research Center of Optical Instrument and System Ministry of Education and Shanghai Key Lab of Modern Optical System University of Shanghai for Science and Technology Shanghai 200093 China Key Laboratory of Terahertz Solid-State Technology Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences 865 Changning Road Shanghai 200050 China BOCOM Smart Network Technologies Inc. 20F Guangqi Mansion No. 456 Hongcao Road Xuhui District Shanghai 200030 China

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基于MapReduce的不确定子图查询处理

基于MapReduce的不确定子图查询处理

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第29届中国数据库学术会议

作者： Han Lu 韩璐 Wang Chaokun 王朝坤 Ruan Wenjing 阮文静 Ou Xiaoping 欧晓平 Qiu Ping 仇萍 School of Software Tsinghua University Beijing 100084 清华大学软件学院北京 100084 Tsinghua National Laboratory for Information Science and Technology Beijing 100084 清华信息科学与技术国家实验室(筹) 北京 100084 Key Laboratory for In formation System Security Ministry of Education Beijing 100084 信息系统安全教育部重点实验室(清华大学)北京 100084

图数据结构具有较强的模拟复杂结构的能力，能够很好地表达数据对象之间的关联，广泛地用于各领域非结构化数据建模。为解决大量数据子图查询处理中的不确定情况，本文提出了基于MapReduce的双向匹配查询算法，并提出了有效的索引结构... 详细信息

图数据结构具有较强的模拟复杂结构的能力，能够很好地表达数据对象之间的关联，广泛地用于各领域非结构化数据建模。为解决大量数据子图查询处理中的不确定情况，本文提出了基于MapReduce的双向匹配查询算法，并提出了有效的索引结构以提高查询算法的效率。最后，在真实数据集和合成数据集上的实验结果证明了算法的正确性、高效性和扩展性。

关键词：不确定图数据双向匹配查询算法信息管理性能测试

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Flexible Ferroelectrics: Periodic Wrinkle‐Patterned Single‐Crystalline Ferroelectric Oxide Membranes with Enhanced Piezoelectricity (Adv. Mater. 50/2020)

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Advanced Materials 2020年第50期32卷 2070377-2070377页

作者： Guohua Dong Suzhi Li Tao Li Haijun Wu Tianxiang Nan Xiaohua Wang Haixia Liu Yuxin Cheng Yuqing Zhou Wanbo Qu Yifan Zhao Bin Peng Zhiguang Wang Zhongqiang Hu Zhenlin Luo Wei Ren Stephen J. Pennycook Ju Li Jun Sun Zuo‐Guang Ye Zhuangde Jiang Ziyao Zhou Xiangdong Ding Tai Min Ming Liu The Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education & International Center for Dielectric Research School of Electronic Science and Engineering State Key Laboratory for Mechanical Behavior of Materials the International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technology Xi'an Jiaotong University Xi'an 710049 China State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 China Center for Spintronics and Quantum System State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and Engineering Xi'an Jiaotong University Xi'an 710049 China Department of Materials Science and Engineering National University of Singapore Singapore 117574 Singapore School of Electronic and Information Engineering Tsinghua University Beijing 100084 China State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University No. 28 Xianning West Road Xi'an Shaanxi Province 710049 China National Synchrotron Radiation Laboratory & CAS Key Laboratory of Materials for Energy Conversion Department of Physics University of Science and Technology of China Hefei 230026 China Department of Nuclear Science and Engineering and Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA Department of Chemistry & 4D LABS Simon Fraser University Burnaby BC V5A 1S6 Canada The State Key Laboratory for Manufacturing Systems Engineering the International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technology Xi'an Jiaotong University Xi'an 710049 China

In article number 2004477, Ziyao Zhou, Xiangdong Ding, Tai Min, Ming Liu, and co‐workers present a periodically wrinkled structure that combines flexible ferroelectric membranes and organic elastomers. Enhanced piezoelectricity is observed at the sites of the peaks and valleys of the wrinkles where the largest strain gradient is generated. The wrinkle‐patterned ferroelectric membranes offer an ideal platform to explore the periodic‐electric‐potential‐induced functions in flexible electrical and optical devices.

关键词： ferroelectrics flexoelectricity freestanding oxides piezoelectricity wrinkles

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