Rodell, M., Houser, P. R., Jambor, U., Gottschalck, J., Mitchell, K., Meng, C., … Toll, D. (2004). The Global Land Data Assimilation System. Bulletin of the American Meteorological Society, 85, 381–394. http://doi.org/10.1175/BAMS-85-3-381 (Original work published March 2004)