FY3C MERSI Daily Land Surface Albedo in Northeast China, 2014 (1 km, GeoTIFF)

Surface albedo is a critical variable in the surface radiation and energy budget, determining the fraction of incoming shortwave radiation that is reflected by the land surface. It is widely used in studies of global climate change, hydrology, ecology, and land–atmosphere interactions. This dataset provides a daily land surface albedo product for Northeast China for the year 2014, derived from FY-3C/MERSI Level-1 observations using a direct-estimation algorithm. After basic preprocessing—including radiometric calibration, destriping, cloud detection, and geometric correction—to obtain clear-sky reflectance, surface albedo is estimated using a lookup-table-based scheme originally developed for MODIS and adapted to FY-3C/MERSI. To improve spatiotemporal continuity, missing values caused by clouds and other data gaps are further filled using a Statistical Temporal Filtering (STF) approach, yielding a gap-reduced 1 km daily land surface albedo record over Northeast China for 2014. The spatial domain covers the main part of Northeast China, including Liaoning, Jilin, Heilongjiang, and eastern Inner Mongolia. The temporal coverage spans 1 January 2014 to 31 December 2014, with one land surface albedo map per day. Each daily map is delivered as a single-band GeoTIFF file with a spatial resolution of approximately 1 km, referenced to an Albers equal-area projection based on the WGS 84 datum. Pixel values represent land surface albedo as unitless fractions, and invalid or missing pixels are flagged with a NoData value of -9999.