Estimating surface albedo from passive microwave satellite observations.
The linear model was developed, approximating the AVHRR-derived clear-sky broadband albedo by the surface air temperature measurements from the International Arctic Buoy Program (IABP/POLES SAT), SSM/I brightness temperatures and SSM/I-derived sea ice characteristics (concentration, age, thickness). Figure 1 shows changes in the surface broadband albedo, estimated from different satellite observations.
Figure 1. Interannual, seasonal and latitudinal changes of surface broadband clear-sky albedo estimated from the AVHRR (source) and the integrated satellite-observation model (fitted).
Figure 2. Seasonal, interannual and regional changes in the Arctic sea ice albedo and melt pond concentrations. a-c) melt ponds in the melting area (observed from melt onset date through freeze onset date, or, from melt onset date through ice disappearing date), d) melt ponds for the whole ice covered Arctic.
Figures 3 and 4 show monthly mean (July) melt pond concentrations and sea ice albedo.