India Annual Winter Cropped Area, 2001-2016

The India Annual Winter Cropped Area, 2001 - 2016 consists of annual winter cropped areas for most of India (except the Northeastern states) from 2000-2001 to 2015-2016. This data set utilizes the NASA Moderate Resolution Imaging Spectroradiometer (MODIS) Enhanced Vegetation Index (EVI; spatial resolution: 250m) for the winter growing season (October-March). The methodology uses an automated algorithm identifying the EVI peak in each pixel for each year and linearly scales the EVI value between 0% and 100% cropped area within that particular pixel. Maps were then resampled to 1 km and were validated using high-resolution QuickBird, RapidEye, SkySat, and WorldView-2 images spanning 2008 to 2016 across 11 different agricultural regions of India. The spatial resolution of the data set is 1 km, resampled from 250m. The data are distributed as GeoTIFF and NetCDF files and are in WGS 84 projection.

印度年度冬作区面积数据集（2001-2016）包含2000-2001至2015-2016年间印度大部分地区（东北部各邦除外）的年度冬作区面积数据。该数据集利用美国国家航空航天局（NASA）中分辨率成像光谱仪（MODIS）提供的增强植被指数（EVI；空间分辨率：250米），覆盖冬作生长季（10月至次年3月）。其方法采用自动化算法，识别每年每个像素的EVI峰值，并将该像素内的EVI值线性缩放至0%至100%的作物种植面积比例。随后，地图被重采样至1公里分辨率，并利用2008至2016年间覆盖印度11个不同农业区的高分辨率影像（QuickBird、RapidEye、SkySat及WorldView-2）进行验证。数据集的空间分辨率为1公里（由250米重采样而来），数据以GeoTIFF和NetCDF格式分发，采用WGS 84投影坐标系。