TY - RPRT TI - Observed Hemispheric Asymmetry in Global Sea Ice Changes AU - Cavalieri, D. J. AU - Gloersen, P. AU - Parkinson, C. L. AU - Comiso, J. C. AU - Zwally, H. J. PY - 1997 UR - https://ntrs.nasa.gov/citations/20000037980 ID - 20000037980 ER -