MODIS based peak NDVI image Year 2011 Tile H24V05 Jiapeng Qu Fabian Ewald fassnacht Christopher Schiller Teja Kattenborn Xinquan Zhao 10.6084/m9.figshare.7767986.v2 https://springernature.figshare.com/articles/dataset/MODIS_based_peak_NDVI_image_Year_2011_Tile_H24V05/7767986 MODIS based peak NDVI image Year 2011 Tile H24V05 2019-05-22 09:09:51 Tibetan Plateau grassland LANDSAT Grassland trends ndvi-difference MODIS Mann-Kendall trend test