Himawari-8/AHI hourly clear-sky land surface temperature and emissivity dataset (2021.1-2021.4)
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下载链接:
https://zenodo.org/record/7663348
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资源简介:
This is the clear-sky LST and LSE dataset (0.02°, hourly) derived by the iTES algorithm (Zhou and Cheng, 2020) from the Himawari-8 AHI thermal infrared data. A broadband emissivity (BBE, 8-13.5μm) dataset was also produced using the derived AHI narrowband LSEs (Cheng et al. 2013). The in-situ validation results show that the bias and RMSE of the retrieved AHI LST are 0.19 and 2.93 K in the daytime, and −0.43 and 1.95 K in the nighttime, respectively. The bias and RMSE of the retrieved LSE are less than 0.005 and 0.014, respectively, compared with the latest MYD21 LSE. The time period of this dataset is 2016-2021, covering the AHI 0.02° nominal fixed grid (60°N∼60°S, 80°E∼160°W).
This is the LST&E dataset in 2021.01-2021.04
Dataset Characteristics:
Spatial Coverage: East Asia and Western Pacific regions (60°N∼60°S, 80°E-140°E)
Temporal Coverage: 2021.01-2021.04
Spatial Resolution: 0.02 °
Temporal Resolution: one hour
Projection: GCS_WGS_1984
Data Format: NetCDF
Citation (Please cite these papers when using the data):
Zhou, S., & Cheng, J. (2020). An Improved Temperature and Emissivity Separation Algorithm for the Advanced Himawari Imager. IEEE Transactions on Geoscience and Remote Sensing, 58, 7105-7124
Cheng, J., et al. (2013). Estimating the Optimal Broadband Emissivity Spectral Range for Calculating Surface Longwave Net Radiation. IEEE Geoscience and Remote Sensing Letters, 10, 401-40
If you have any questions, please contact Prof. Jie Cheng (Jie_Cheng@bnu.edu.cn).
本数据集为晴空条件下的地表温度(Land Surface Temperature, LST)与地表发射率(Land Surface Emissivity, LSE)数据集,空间分辨率为0.02°,时间分辨率为逐小时,由iTES算法(Zhou与Cheng,2020)基于葵花八号(Himawari-8)卫星搭载的先进Himawari成像仪(Advanced Himawari Imager, AHI)的热红外数据反演得到。本数据集同时生成了宽带发射率(Broadband Emissivity, BBE,波段范围8~13.5μm)数据集,其基于反演得到的AHI窄带地表发射率,采用Cheng等人2013年提出的方法制作。原位验证结果表明,日间反演得到的AHI地表温度的偏差与均方根误差(Root Mean Square Error, RMSE)分别为0.19 K与2.93 K,夜间则分别为-0.43 K与1.95 K;与最新的MYD21地表发射率产品相比,反演得到的地表发射率的偏差与均方根误差分别小于0.005与0.014。本数据集的时间跨度为2016年至2021年,覆盖AHI 0.02°标称固定网格区域(北纬60°~南纬60°,东经80°~西经160°)。
本数据集为2021年1月至2021年4月的地表温度与发射率数据集。
数据集特征:
空间覆盖范围:东亚与西太平洋区域(北纬60°~南纬60°,东经80°~东经140°)
时间覆盖范围:2021年1月至2021年4月
空间分辨率:0.02°
时间分辨率:逐小时
投影坐标系:GCS_WGS_1984
数据格式:NetCDF
引用说明(使用本数据集时请引用以下文献):
Zhou, S., & Cheng, J. (2020). 面向先进Himawari成像仪的改进型温度与发射率分离算法. IEEE地球科学与遥感汇刊, 58, 7105-7124
Cheng, J., et al. (2013). 估算地表长波净辐射计算所需的最优宽带发射率光谱范围. IEEE地球科学与遥感快报, 10, 401-40
如有任何疑问,请联系程洁教授(邮箱:Jie_Cheng@bnu.edu.cn)。
创建时间:
2023-03-10



