2026-10-14T03:14:16Z https://www.scidb.cn/oai

10.11922/sciencedb.01470 2022-01-25T14:04:06Z

2022-01-25 A Clear-sky Daily DLR product from the FY3D MERSI-2 observations doi:10.11922/sciencedb.01470 en A daily clear-sky surface downward longwave radiation in the Arctic (60°N-90°N), produced from the FY-3D MERSI-2 thermal infrared (TIR) top-of-atmosphere (TOA) radiances, using the extremely randomized trees (ERT) machine learning algorithm. The dataset was firstly generated from the instantaneous MERSI-2 TIR radiances. The retrieval accuracy of the instantaneous LWDR dataset in RMSE and bias, validated with the Baseline Surface Radiation Network (BSRN) in situ measurements, are 14.14 W/m2 and 4.36 W/m2, respectively. Then, a diurnal model derived from the CERES SYN product was used to integrate the instantaneous LWDR data to daily product. The dataset has a spatial resolution of 1km. FY3D; MERSI-2; Surface Downward Longwave Radiation; Clear-sky Yunfeng Cao PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank