Fig. 2: NDVI time series overview.

A NDVI values (mean within ROIs) over time for Landsat 8 2015, data is grouped by crop type and colored according to the Köppen-Geiger climate zone classification. B NDVI values (mean within ROIs) over time for Landsat-8 2018, data is grouped by crop type and colored according to the Köppen-Geiger climate zone classification. C NDVI values (mean within ROIs) over time for Sentinel-2 2018, data is grouped by crop type and colored according to the Köppen-Geiger climate zone classification. The black line represents a linear trendline showing the progression of NDVI values over time for each crop. Further details of NDVI distribution across crop types are provided in the supplementary section 1.2.