Evaluation of the Surface Albedo Estimation from FY-3D MERSI-II Over High Latitudes

Surface albedo is a fundamental parameter for understanding Earth's climate and calculating energy balance. The Fengyun-3D (FY-3D) satellite, China’s second-generation polar-orbiting meteorological satellite, is equipped with the Medium Resolution Spectral Imager-II (MERSI-II), which conducts global surface observations. However, limited studies have focused on surface albedo retrieval with MERSI-II observations, particularly over high latitudes, where albedo products often exhibit considerable uncertainty. In this paper, we propose a direct estimation method for surface albedo tailored to high-latitude regions and evaluate its accuracy based on MERSI-II observations. The validation of ground measurements indicates that our algorithm achieves high accuracy, with an overall root mean square error (RMSE) of approximately 0.040 and an absolute mean bias of 0.022. Furthermore, our study reveals that the reliability of retrieval results is significantly influenced by the quality of MERSI-II cloud mask products, which demonstrate an overestimation of cloud cover compared with ground-based clear-sky observations.

• Publication year

  2025

• Venue

  IEEE International Geoscience and Remote Sensing Symposium

• Publication date

  2025-08-03

• Fields of study

  Not labeled

• Identifiers
  DOI 10.1109/IGARSS55030.2025.11243256
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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