A new scanning schedule that adds more sectors is being followed for GOES-15 as the satellite drifts westward towards 135 W. When GOES-15 becomes the new GOES-West, replacing GOES-11 (planned to occur on December 6th), the augmented scanning schedule will become operational, offering 1 or 2 additional scans per hour of... Read More

High pressure over the eastern United States on October 6th allowed a rare view of the (almost) cloud-free Great Lakes, above, from the MODIS instrument on board Terra. The clear skies also allowed observations of lake surface temperatures over the entire Lake system, shown below. (Click here for an animation... Read More

Hurricane Ophelia, the fourth hurricane of the north Atlantic tropical season, is pictured above near peak intensity as it moves over the open waters of the Atlantic Ocean, northeast of Hispaniola (which island is visible in the southwest corner of the image loop). The hurricane displays a circular central dense... Read More

Clear Air Turbulence can be a significant aircraft hazard, occasionally causing injuries and long delays. (See, for example, here and here for two recent examples. The second example resulted in a 6-hour delay (Link))At the upper-tropospheric boundary between air masses, vertical shearing at the jet stream combined with the ageostrophic... Read More