ELITE land surface temperature: FY-4A/AGRI hourly 4km clear-sky LST (2018)

The Essential thermaL Infrared remoTe sEnsing (ELITE) product suite currently has four types of products, including land surface temperature (LST: clear-sky and all-sky), emissivity (NBE: narrowband emissivity; BBE: broadband emissivity; and spectral emissivity), the component of surface radiation and energy budget (SLUR: surface longwave upwelling radiation; SLDR: surface longwave downward radiation SLDR; SLNR: surface longwave net radiation), and the component of Earth’s radiation budget (OLR; outgoing longwave radiation; RSR: reflected solar radiation). The spatial-temporal resolutions of the ELITE products are mainly determined by the employed satellite data sources. For more information about ELITE products, please refer to the website (https://elite.bnu.edu.cn). This dataset is the 4km hourly clear-sky LST dataset derived by the iTES algorithm (Liu et al. 2022) from the FY-4A/AGRI thermal infrared data, covering the AGRI 4km nominal fixed disc (80.6°N-80.6°S, 24.1°E-174.7°W). The in-situ validation results show that the bias and RMSE of the retrieved AGRI LST are 0.58 and 2.93 K in the daytime, and −0.30 and 2.18 K in the nighttime, respectively. The temporal resolution and spatial resolution of this dataset are one hour and 4km, respectively. This is the ELITE FY-4A/AGRI clear-sky LST product in 2018. Please click here to download the ELITE LST product in 2019. Dataset Characteristics: Spatial Coverage: AGRI nominal fixed disc (80.6°N-80.6°S, 24.1°E-174.7°W) Temporal Coverage: 2018 (starting from Apr.) Spatial Resolution: 4 km (subsatellite point) Temporal Resolution: one hour Data Format: HDF Scale: 0.01 Citation (Please cite these papers when using the data): Liu, W., Shi, J., Liang, S., Zhou, S., & Cheng, J. (2022). Simultaneous retrieval of land surface temperature and emissivity from the FengYun-4A advanced geosynchronous radiation imager. International Journal of Digital Earth, 15, 198-225 If you have any questions, please contact Prof. Jie Cheng ([e-mail]).核心热红外遥感（Essential Thermal Infrared Remote Sensing, ELITE）产品套件目前包含四类产品：地表温度（Land Surface Temperature, LST，含晴空与全天空两种场景）、发射率（窄带发射率NBE、宽带发射率BBE及光谱发射率）、地表辐射与能量收支分量（地表长波上行辐射SLUR、地表长波下行辐射SLDR、地表长波净辐射SLNR），以及地球辐射收支分量（向外长波辐射OLR、反射太阳辐射RSR）。ELITE产品的时空分辨率主要取决于所采用的卫星数据源。如需了解ELITE产品的更多信息，请访问官网：https://elite.bnu.edu.cn。 本数据集为基于iTES算法（Liu等，2022）从风云四号A星先进地球同步辐射成像仪（FY-4A/AGRI）热红外数据中反演得到的4km分辨率逐小时晴空LST数据集，覆盖AGRI 4km标称固定盘区域（80.6°N~80.6°S，24.1°E~174.7°W）。原位验证结果显示，反演得到的AGRI LST在日间的偏差与均方根误差分别为0.58 K和2.93 K，夜间分别为-0.30 K和2.18 K。本数据集的时间分辨率与空间分辨率分别为1小时与4km。 本数据集为2018年版ELITE FY-4A/AGRI晴空LST产品。请点击此处下载2019年版ELITE LST产品。 数据集特征： 空间覆盖范围：AGRI标称固定盘区域（80.6°N~80.6°S，24.1°E~174.7°W） 时间覆盖范围：2018年（自4月起） 空间分辨率：4 km（星下点） 时间分辨率：1小时 数据格式：分层数据格式（HDF） 尺度因子：0.01 引用说明（使用本数据时请引用以下文献）： 刘伟, 施健, 梁顺林, 周帅, 程洁. (2022). 风云四号A星先进地球同步辐射成像仪地表温度与发射率同步反演. 国际数字地球学报, 15, 198-225. 如有任何疑问，请联系程洁教授（邮箱：[e-mail]）。