scaling up mosacing experiment, edits

global scaling up initial commit for mosaicing script to experiment with different weigted averages to deal with boundaries

initial commit for assessment of time series profiles from predicted mosaic for North America year 2010

global assessment part1, obtaining training and testing information from global runs

global assessment part 2, changes to accomodate additional tiles in figure production

assessment part2, first test for year 2003 predictions in reg5 Africa

global assessement part 1, changes to accomadate additional tiles for 1500x4500km tiles

global assessment part 1, adding additional tiles to 1500x4500km tiles for several regions

global assessment part2 for 1500x4500km with missing tiles for reg1 included for comparison to 1000x3000km

global assessment part2 1500x4500km production of figures, checking for missing tiles