Additional perspectives and analysis are also available in an enso blog. Andy oneill, an oceanographer and meteorologist with the usgs pacific coastal and marine science. Though enso is a single climate phenomenon, it has three states, or phases, it can be in. A thesis presented to the faculty of the usc graduate school university of southern california in partial fulfillment of the requirements for the degree master of science geographic information science and technology may 2017. Forecasts are also updated monthly in the forecast forum of cpcs climate diagnostics bulletin. One of southern californias most notorious floods occurred in march 1938. The pattern can shift back and forth irregularly every two to seven years, and each phase triggers predictable disruptions of temperature, precipitation, and winds. September 22, 2015 workshopchanging ocean conditions. Not quite the area in white shows where sea surface levels are highest, which is an indication of the warmest sea surface temperatures. When pressure rises in the east, it falls in the west and vice versa. The southern oscillation is a seesaw shift in surface air pressure between the eastern and western halves of the pacific. Enso impacts on ecosystem indicators in the california current. What it is and what to expect for southern california by andy oneill, u. Predictability and prediction of southern california rains.
It has the average for all events, weak events, moderate events, strong and very strong events and the wide range of the individual seasons that went into making up each of the averages. The southern oscillation is the accompanying atmospheric component, coupled with the. C for the oceanic nino index oni 3 month running mean of ersst. Beach morphodynamic change detection using lidar during. The warm water, centered on galapagos, transfers its heat out. Ensoneutral is favored for the northern hemisphere summer 2020 60%. The enso cycle is a scientific term that describes the fluctuations in temperature between the ocean and atmosphere in the eastcentral equatorial pacific approximately between the international date line and 120 degrees west.
1521 1433 1190 540 283 1436 792 1027 231 485 1284 247 1437 4 1254 1595 6 718 800 1572 1343 465 605 1440 1227 310 271 943 276 849 26 931 992 31 37 960 14 1101 440