Influence of melt-pond depth and ice thickness on Arctic sea-ice albedo and light transmittance

摘要: Abstract Solar radiation drives the melting of Arctic sea ice in summer, but its parameterization thermodynamic modeling is difficult due to large variability optical properties space and time. Here, a two-stream radiative transfer model was developed for propagation solar ponded investigate dependence apparent (AOPs), particularly albedo transmittance, on sky conditions, pond depth, thickness, inherent (IOPs) water. The results numerical experiments revealed that decrease melt-pond during not only from increase depth also underlying latter more important thin with thickness less than 1.5 m. Hence, parameterized as function both suitable thinning previously used exponential which valid thicker ice. broadband transmittance can be explained by because nearly three times stronger depth. spectral significant 600–900-nm band, while it depends clearly 350–600-nm band. uncertainty resulting absorption coefficient limited, effect scattering important, determined sensitivity study influence IOPs AOPs provides time-efficient ice, accounting scattering, has potential implementation into sea-ice models explain role melt ponds summer decay