ENSO observing system: Past, present, and future, by William S. Kessler, Arun Kumar, and Neville R. Smith; Ocean data assimilation for ENSO prediction, by Anthony Rosati, Oscar Alves, Magdalena Balmaseda, Xiaosong Yang, and Yan Xue; Current status of ENSO prediction and predictability, by Ben Kir... Show moreENSO observing system: Past, present, and future, by William S. Kessler, Arun Kumar, and Neville R. Smith; Ocean data assimilation for ENSO prediction, by Anthony Rosati, Oscar Alves, Magdalena Balmaseda, Xiaosong Yang, and Yan Xue; Current status of ENSO prediction and predictability, by Ben Kirtman; Precursors of ENSO beyond the tropical Pacific, by Jin-Yi Yu and Houk Paek; Climate model biases and El Nino Southern Oscillation (ENSO) simulation, by Antonietta Capotondi, Yoo-Geun Ham, Andrew Wittenberg, and Jong-Seong Kug; Low-frequency variations of ENSO, by Andrew T. Wittenberg Show less