The Blob (Pacific Ocean) the surface waters of the mid-latitude Pacific Ocean flipping from a cold phase to a warm phase in a cycle known as the Pacific decadal oscillation (PDO). This poorly-understood change happens at irregular intervals of years or decades. During a warm phase, the west Pacific becomes cooler and part of the eastern ocean warms; during the cool phase, these changes reverse. Scientists believe a cold phase started in the late 1990s and the arrival of the Blob may be the start of the next warm phase. The PDO phases may also be related to the likelihood of El Nino events.
The Blob (Pacific Ocean) The Blob (Pacific Ocean) The Blob is a large mass of relatively warm water in the Pacific Ocean off the coast of North America. It was first detected in late 2013 and continued to spread throughout 2014 and 2015. Sea surface temperature indicated that The Blob persisted into 2016, but was thought to have dissipated later that year. By September 2016, "The Blob" resurfaced and made itself known to meteorologists. This warm water mass is unusual in ocean conditions and is considered to have a role in the formation of the unusual weather conditions felt in the Pacific Coast of