Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5754922 | Remote Sensing of Environment | 2017 | 11 Pages |
Abstract
Furthermore, we demonstrate that single 'point-to-pixel' methods alone are insufficient in characterizing and validating the variation of surface albedo displayed in the lower ablation area. This is true because the distribution of in situ data deviations from MODIS albedo show a substantial range, with the average values for the 10th and 90th percentiles being â 0.30 and 0.43 across all bands. Thus, if only single point is taken for ground validation, and is randomly selected from either distribution tails, the error would appear to be considerable. Given the need for multiple in-situ points, concurrent albedo measurements derived from existing AWSs, (low-flying vehicles (airborne or unmanned) and high-resolution imagery (WV-2)) are needed to resolve high sub-pixel variability in the ablation zone, and thus, further improve our characterization of Greenland's surface albedo.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Computers in Earth Sciences
Authors
Samiah E. Moustafa, Asa K. Rennermalm, Miguel O. Román, Zhuosen Wang, Crystal B. Schaaf, Laurence C. Smith, Lora S. Koenig, Angela Erb,