针对波浪能发电量取决于当地波浪特征和波浪能发电装置,而传统单一的波能流密度评估法则只考虑了地区波浪特性,未结合装置加以分析,评估结果偏向理论的问题,本文利用欧洲中期天气预报中心(European Centre for Medium-Range Weather For...针对波浪能发电量取决于当地波浪特征和波浪能发电装置,而传统单一的波能流密度评估法则只考虑了地区波浪特性,未结合装置加以分析,评估结果偏向理论的问题,本文利用欧洲中期天气预报中心(European Centre for Medium-Range Weather Forecasts, ECMWF)提供的第五代大气再分析数据集(ECMWF Reanalysis v5, ERA5)中的再分析波浪数据,通过装置得分的波浪能评估方法对北太平洋区域1979—2020年波浪能的空间分布进行了分析。结果表明:在本研究所涉及的地区中,纬度较高的地区波能流密度大且装置得分高,本研究所用评估方法的结论同传统评估方法一致,但在中国南海和部分太平洋纬度较低的地区,发电装置有着较好的连续发电条件,发电效率较高。不同装置间的适配区域也有很大不同,AquaBuoy和Pelamis装置的最佳适用区位于北太平洋纬度较高的地区,而Wave Dragon装置的最佳适用区范围更广,在150°E—160°W之间的纬度较低的地区也表现突出。对于中国南海海域,AquaBuoy装置的适配性最好,而北太平洋纬度较高的地区则最适合布置Pelamis装置,北太平洋纬度中游和较低区域最适合布置Wave Dragon装置。展开更多
The trend in the atmospheric heat source over the central and eastern Tibetan Plateau (CE-TP) is quantitatively estimated using historical observations at 71 meteorological stations, three reanalysis datasets from 198...The trend in the atmospheric heat source over the central and eastern Tibetan Plateau (CE-TP) is quantitatively estimated using historical observations at 71 meteorological stations, three reanalysis datasets from 1980-2008, and two satellite radiation datasets from 1984-2007. Results show that a weakening of sensible heat (SH) flux over the CE-TP continues. The most significant trend occurs in spring, induced mainly by decelerated surface wind speeds. The ground-air temperature difference shows a notable increasing trend over the last 5 years. Trends in net radiation flux of the atmospheric column over the CE-TP, evaluated by two satellite radiation datasets, are clearly different. Trends in the atmospheric heat source calculated by the three reanalysis datasets are not completely consistent, and even show opposite signals. Results from the two datasets both show a weakening of the heat source but the magnitude of one is significantly stronger, whereas an increase is indicated by the other data. Therefore, it is challenging to accurately calculate the trend in the atmospheric heat source over the CE-TP, particularly from the estimates of the reanalysis datasets.展开更多
基金国家重点研发计划“低碳社区,建筑清洁能源冷热电联供关键技术及示范”项目(2019YFE0104900)国家自然科学基金基础科学中心项目“The theory and application of resource and environment management in the digital economy era”(72088101)国家自然科学基金青年项目“基于超参数优化的面向极端热浪事件的模拟用气象参数生成方法研究”(51908312)。
基金supported by the Chinese Ministry of Science and Technology (2010CB951703 and 2009CB421403)the Knowledge Innovation Program of Chinese Academy of Sciences (KZCX2-YW-Q11- 01)the National Natural Science Foundation of China (40975047)
文摘The trend in the atmospheric heat source over the central and eastern Tibetan Plateau (CE-TP) is quantitatively estimated using historical observations at 71 meteorological stations, three reanalysis datasets from 1980-2008, and two satellite radiation datasets from 1984-2007. Results show that a weakening of sensible heat (SH) flux over the CE-TP continues. The most significant trend occurs in spring, induced mainly by decelerated surface wind speeds. The ground-air temperature difference shows a notable increasing trend over the last 5 years. Trends in net radiation flux of the atmospheric column over the CE-TP, evaluated by two satellite radiation datasets, are clearly different. Trends in the atmospheric heat source calculated by the three reanalysis datasets are not completely consistent, and even show opposite signals. Results from the two datasets both show a weakening of the heat source but the magnitude of one is significantly stronger, whereas an increase is indicated by the other data. Therefore, it is challenging to accurately calculate the trend in the atmospheric heat source over the CE-TP, particularly from the estimates of the reanalysis datasets.
