This is the global sea surface hemispherical broadband emissivity (BBE, 8-13.5 micrometer) dataset (0.1°) derived by a lookup table-based method developed by Cheng et al., (2017). The accuracy of the estimated hemispherical BBE was 0.003 given a wind speed of zero. The foam effect was also incorporated into the BBE dataset. This dataset spans from 1980 to 2020. Dataset Characteristics: Spatial Coverage: Global Temporal Coverage: 1980.01-2020.12 Spectral Range: 8~13.5μm Spatial Resolution: 0.1° Temporal Resolution: Daily (instantaneous at 12:30) Projection: GCS_WGS_1984 Data Format: HDF Citation (Please cite these papers when using the data): Cheng, J., et al. (2017). A Lookup Table-Based Method for Estimating Sea Surface Hemispherical Broadband Emissivity Values (8–13.5 μm). Remote Sensing, 9 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, 401-405 If you have any questions, please contact Prof. Jie Cheng (Jie_Cheng@bnu.edu.cn).