Anna Switzer Switzer, A. C., Kamykowski, D., & Zentara, S. J. (2003). Mapping nitrate in the global ocean using remotely sensed sea surface temperature. Journal of Geophysical Research. Oceans, 108(C8). Kamykowski, D., Zentara, S. J., Morrison, J. M., & Switzer, A. C. (2002). Dynamic global patterns of nitrate, phosphate, silicate, and iron availability and phytoplankton community composition from remote sensing data. Global Biogeochemical Cycles, 16(4), 1077–1071.