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.

《2001-2016年印度年度冬季作物面积》数据集包含印度大部分地区（除东北部各州）自2000-2001年至2015-2016年的年度冬季作物面积。本数据集采用美国国家航空航天局（NASA）中分辨率成像光谱辐射计（MODIS）增强植被指数（EVI；空间分辨率：250米）对冬季生长季节（10月至3月）进行数据采集。该研究方法通过自动化算法识别每个像素每年的EVI峰值，并在此特定像素内将EVI值线性缩放至0%至100%的作物覆盖面积。随后，地图经过重采样至1公里分辨率，并使用覆盖2008至2016年期间、跨越印度11个不同农业区域的、高分辨率的QuickBird、RapidEye、SkySat和WorldView-2图像进行验证。数据集的空间分辨率为1公里，系由250米分辨率重采样而来。数据以GeoTIFF和NetCDF文件格式分发，投影坐标系为WGS 84。