中国4 km日尺度气象数据集(2000-2020)
收藏资源简介:
本数据集为中国逐日多要素气象数据,包括2m最高气温(K)、最低气温(K)、平均气温(K)、降水量(mm)、平均地表温度(K)、10m平均风速(m/s)、相对湿度(%)、表面压力(hPa)和日照时数(h),空间分辨率为0.041666667°(约4km),时间为2000.1-2020.12,地理空间范围是中国主要陆地(不含南海岛礁等区域)。数据是基于中国699个气象观测站的逐日观测记录,使用薄盘光滑样条和随机森林两种方法进行空间插值生成的。使用独立气象观测点数据和已有的气象数据产品(CMFD、HRLT)进行了验证,验证结果可信。本数据集可为生态、水文、农业等领域气候变化相关研究提供重要数据。
This is a daily multi-variable meteorological dataset for China, encompassing 2-meter maximum air temperature (K), 2-meter minimum air temperature (K), 2-meter mean air temperature (K), precipitation (mm), mean surface temperature (K), 10-meter mean wind speed (m/s), relative humidity (%), surface pressure (hPa), and sunshine duration (h). The dataset has a spatial resolution of 0.041666667° (approximately 4 km), covers the period from January 2000 to December 2020, and its geographical scope includes main terrestrial areas of China (excluding regions such as South China Sea islands and reefs). It was generated through spatial interpolation using two methods, thin plate smooth spline and Random Forest, based on daily observation records from 699 meteorological stations across China. Validation was conducted using independent meteorological observation point data and existing meteorological data products (CMFD, HRLT), yielding reliable validation results. This dataset can offer critical data for climate change-related research in fields such as ecology, hydrology, and agriculture.




