Improving the timeliness of winter wheat production forecast in the United States of America, Ukraine and China using MODIS data and NCAR Growing Degree Day information

1. Franch, B.
2. Vermote, E.F.
3. Becker-Reshef, I.
4. Claverie, M.
5. Huang, J.
6. Zhang, J.
7. Justice, C.
8. Sobrino, J.A.