EMIS - SeaWiFS Monthly anomalies sea surface diffuse attenuation coefficient at 490nm (2km) in m^-1

Water Transparency (Diffuse attenuation coefficient at 490nm, Kd490 in m^-1 at 2km resolution): The diffuse attenuation coefficient Kd490 measures the light penetration in the water column at the blue-green wavelengths (ca. 490 nm). It represents a good indicator of water transparency resulting from the combined action of absorption and backscattering by the water constituents, and the structure of the surrounding light field.水体透明度（490nm处漫衰减系数（Diffuse attenuation coefficient），记为Kd490，单位为m⁻¹，空间分辨率为2千米）：490nm处漫衰减系数Kd490用于表征蓝绿波段（约490nm）下水体柱内的光穿透能力。该系数是水体透明度的优良表征指标，其数值由水体组分的吸收、后向散射作用，以及周边光场结构共同决定。