VANDENBERG AIR FORCE BASE, Calif. – Workers begin placing the canister segments around the base of the wrapped Ocean Surface Topography Mission, or OSTM/Jason 2, spacecraft. Once the canister is fully in place, the OSTM/Jason 2 will be transported to the launch pad. The launch of the OSTM/Jason 2 aboard a Delta II rocket is scheduled for Friday, June 20, from Vandenberg Air Force Base in California. The launch window extends from 12:46 a.m. to 12:55 a.m. PDT. The satellite will be placed in an 830-mile-high orbit at an inclination of 66 degrees after separating from the Delta II 55 minutes after liftoff. The five primary science instruments of the Ocean Surface Topography Mission aboard the Jason 2 spacecraft are dedicated to measuring ocean surface height. These measurements will be used to evaluate and forecast climate changes and improve weather forecasting. The results also are expected to help forecasters better predict hurricane intensity. Photo credit: NASA/Dan Liberotti KSC-08pd1668