| 起伏地形下朝鲜半岛天文辐射的时空分布 |
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| 引用本文： | 张世范,张 岸,齐清文,刘高焕.起伏地形下朝鲜半岛天文辐射的时空分布[J].资源科学,2010,32(6):1097-1102. |
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| 作者姓名： | 张世范 张 岸 齐清文 刘高焕 |
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| 作者单位： | 1. 朝鲜国家科学院地理研究所平壤中国科学院地理科学与资源研究所,北京,100101;中国科学院研究生院,北京,100049
2. 中国科学院地理科学与资源研究所,北京,100101 |
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| 基金项目： | 国家科技部“科技基础性工作专项”项目之课题(编号：2007FY140800-4[2])。 |
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| 摘 要： | 本文应用数字高程模型(DEM)数据和地理信息系统(GIS),建立了起伏地形下天文辐射分布式计算模型,计算了朝鲜半岛起伏地形下全年各月的100m×100m分辨率天文辐射精细空间分布结果,并详细分析了朝鲜半岛天文辐射的空间分布特征。计算结果表明:①在朝鲜半岛天文辐射同时受到南北方向纬度带的影响和山地条件的影响,其中山地影响大于纬度带影响;②朝鲜半岛天文辐射具有明显的季节特征;③朝鲜半岛地形对天文辐射的影响存在季节差异,夏季6月最小,冬季12月最大。
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| 关 键 词： | 朝鲜半岛 天文辐射 空间分布 起伏地形 DEM |
Spatial Distribution of Extraterrestrial Solar Radiation under Rugged Terrains over the Korean Peninsula |
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| ZHANG Sebom,ZHANG An,QI Qingwen and LIU Gaohuan.Spatial Distribution of Extraterrestrial Solar Radiation under Rugged Terrains over the Korean Peninsula[J].Resources Science,2010,32(6):1097-1102. |
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| Authors: | ZHANG Sebom ZHANG An QI Qingwen and LIU Gaohuan |
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| Abstract: | Extraterrestrial solar radiation (ESR) is a key component in the calculation of terrestrial net radiation and in the study on solar energy resources. Mountains cover around 80 % of the Korean Peninsula and arable plains are generally small and far in between the successive mountain ranges. The peninsula becomes more mountainous towards the north and the east. However, little work has been done about ESR distribution over rugged terrains until now, which significantly hinders further studies on estimation of net radiation over the Korean Peninsula and in relevant fields. In the present work, the authors performed a study on quantification of ESR under rugged terrain conditions over the Korean Peninsular, and provided a thorough investigation on its spatial and temporal distributions. Shuttle Radar Topography Mission (SRTM) Digital Elevation Model (DEMs) of a spatial resolution of 90 m×90 m and geographic information systems (GIS) techniques were utilized to calculate and analyze the ERR under rugged terrains. A model for computing ESR distribution under rugged terrains was developed and the spatial distribution of ESR for each month across the Korean Peninsula was derived with a spatial resolution of 100 m× 100 m. Results showed that in general, the spatial distribution of ESR over the Korean Peninsula is determined by latitude and terrain factors (e.g., slope, aspect and elevation), with showing that terrain factors have more significant effects on the magnitude of ESR compared with the latitude. It was also found that ESR over the Korean Peninsula greatly varies over seasons, showing the largest value in summer, the smallest value in winter and a medium value in spring and autumn. The total amount of ESR in spring is larger than that in autumn. Results also indicated that the total amount of ESR basically shows a seasonal asymmetric characteristic. Effects of terrain factors on ESR over the Korean Peninsula are least significant in June and the most significant in December. |
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| Keywords: | The Korean Peninsula Extraterrestrial solar radiation Rugged terrain DEM |
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