Sample Reference Data for Global Cropland Analysis 2000-2019


Sample map and reference data:

Map data provided for each sample and each four-year interval (2000-2003, 2004-2007, 2008-2011, 2012-2015, and 2016-2019) referred to by the last year of the interval (2003, ... ,2019). Map values: 1 - crop detected, 0 - no crop detection.

Reference data based on visual image interpretation. Reference categories:

Sample analysis was performed separately by seven regions selected as population of the 1×1° Landsat ARD tiles within continents and national boundaries. The to access sample data, use the link to a specific region:

Africa [AFR]:

Southwest Asia [SWA]:

Australia and New Zealand [ANZ]:

Southeast Asia [SEA]:

Europe and North Asia [ENA]:

North and Central America [NAM]:

South America [SAM]:

Sample data interface description:

A - the sample Region and ID.

B - the link to Google Earth interface (provides sample outline).

C - Landsat ARD 16-day clear-sky NDVI and shortwave infrared band (1.6 µm) normalized surface reflectance for the sample pixel. NDVI value (-1 to 1) scaled to the range 0-2, and reflectance (0 to 1) scaled to range 1-3.

D - Landsat interquartile means for each time interval (2000-2003, 2004-2007, 2008-2011, 2012-2015, 2016-2019). Band combination SWIR (1.6 µm) / NIR/ Red.

E - Landsat maximum NDVI composite for each time interval, band combination NIR / SWIR SWIR (1.6 µm) / SWIR (2.2 µm).

F - Landsat snow-free season amplitude, band combination NIR / SWIR (2.2 µm) / NDVI. In each Landsat each composite, D-F, selected sample pixel outlined in red.