Crop Mask Title:
Fifty percent probability crop masks derived from 2011-2016 NASS Crop Data Layers (CDL)

Coverage:
Continental United States (CONUS)

Spatial resolution:
30-meters

Satellite:
Landsat

Year:
2011-2016

Version:
Crops having 50 percent probability of being planted were derived from 2011-2016 NASS CDL’s. Each crop type defines the version.

Organization:
Crops having 50 percent probability of being planted were derived by Dave Johnson from USDA-NASS and by processing NASS CDL’s from 2011-2016.

The NASS Cropland Data Layers (CDL) from 2008-2018 were created by the USDA, National Agricultural Statistics Service (NASS), Research and Development Division, Geospatial Information Branch, Spatial Analysis Research Section.

Resource Contact:
The Point of Contact for 50 percent probability crop masks is:
Dave Johnson
dave.johnson@usda.gov

The Point of Contact for NASS CDL’s is:
Rick Mueller
rick.mueller@usda.gov

Resource Abstract:
Crop masks having 50 percent probability of being planted were derived from NASS Cropland Data Layers (CDL) from 2011 through 2016. The crop masks having 50 percent probability of being planted and include the following crops: all crops, alfalfa, barley, canola, corn, cotton, grass, millet, peanuts, rice, sorghum, soybeans, spring wheat, sunflowers, and winter wheat.

Resource Classification Categories:
The 15 different crop types include the following: all crops, alfalfa, barley, canola, corn, cotton, grass, millet, peanuts, rice, sorghum, soybeans, spring wheat, sunflowers, and winter wheat.

Reprocessing for MODIS-GLAM (250-meter) applications:
CDL crop masks from 2011-2016 were derived and resampled to 250-meters spatial resolution for cropland data drilling on MODIS-GLAM. The reprocessing and resampling steps follow:

The occurrence of 15 different crops during five years from 2011-2016 were identified from 2011-2016 CDLs and set to a binary value of 1.
Each binary data set for 15 crops was resampled from 30-meters to 250-meters spatial resolution.

Resource URL:
NASS Cropland Data Layers
https://www.nass.usda.gov/Research_and_Science/Cropland/SARS1a.php

NASS CropScape
https://nassgeodata.gmu.edu/CropScape/

Download URL:
Download the national 2018 cultivated layer zipped file 2018 National Cultivated Layer (500 MB). The Cultivated Layer is based on the most recent five years (2014-2018).
https://www.nass.usda.gov/Research_and_Science/Cropland/Release/index.php

Resource Citation:
The most current NASS CDL data is available free for download along with extensive metadata, FAQs, and other detailed technical information at the following website:
https://www.nass.usda.gov/Research_and_Science/Cropland/SARS1a.php