Read our news article about the use of GO-SHIP hydrography for observing the deep ocean in the latest edition of US CLIVAR Variations, called “A case for observing the deep ocean.” This edition of Variations highlights the existing “state-of-the-art” methods to measure the deep ocean, some of the scientific insights that have already been gained from these observations, and new methodologies and technologies to expand the network of observations. The GO-SHIP article begins on p. 8, and is co-authored by L. Talley, G.C. Johnson, S. Purkey, R.A. Feely and R. Wanninkhof. The lead article in the edition of Variations is an overall case for deep ocean observations, co-authored by G.C. Johnson and M. Winton.