Acknowledgements
The guest editors would like to thank the unstinting and voluntary work from all reviewers. We appreciate the help given by International Journal of Remote Sensing Editor-in-Chief, Timothy A. Warner, and Co-Editors-in-Chief Arthur P. Cracknell and Giles M. Foody. Catherine Murray provided administrative support and Pauline Lovell helped with language polishing for many papers. Xiaofeng Yang helped with miscellaneous editorial work. The views, opinions, and findings contained in this report are those of the authors and should not be construed as an official NOAA or US Government position, policy, or decision.