Diagram Of El Nino And La Nina
Strong el niño conditions in december 1997 are shown on the bottom panel with warm water red extending all along the equator.
Diagram of el nino and la nina. El niño and la niña years and intensities based on oceanic ni ño index oni jan null ccm updated thru apr may jun 2020. Red orange colors indicate warm ocean surface temperatures yellow greenish colors indicate cooler temperatures. Climatic conditions over the pacific ocean and the beginnings of el niño. El niño and la niña are opposite phases of what is known as the el niño southern oscillation enso cycle the enso cycle is a scientific term that describes the fluctuations in temperature between the ocean and atmosphere in the east central equatorial pacific approximately between the international date line and 120 degrees west.
The upper diagram shows the normal atmospheric and oceanic conditions in the equatorial pacific. El nino and la nina el nino and la nina animation. The left side of each diagram is the western pacific ocean near asia and the right side is the eastern pacific ocean near south america. Presentations ppt key pdf logging in or signing up.
These large stores of heat el niño or lack of heat la niña act like a flywheel and ensure that an event will not dissipate rapidly. It is the running 3 month mean sst anomaly for the ni ñ o 3 4 region i e 5 o n 5 o s 120 o 170 o w. El nino and la nina. For example during the 1997 98 el niño event which many consider the el niño of the century surface temperatures were around 3 5 c warmer than normal in the eastern tropical pacific but.
El niño and la niña are opposite phases of the el niño southern oscillation enso cycle with la niña sometimes referred to as the cold phase of enso and el niño as the warm phase of enso. The pattern can shift back and forth irregularly every two to seven years and each phase triggers predictable disruptions of temperature precipitation and winds. Drier weather in the west coast of the us. Schematic diagrams of el niño normal and la niña conditions.
El niño and la niña are the warm and cool phases of a recurring climate pattern across the tropical pacific the el niño southern oscillation or enso for short. El nino la nina compare and contrast the weather phenomena in your science notebook. The lower diagram illustrates the beginnings of el niño with. El nino and la nina are two of the three phases of a natural cycle called enso the el nino southern oscillation across the tropical pacific.
Enso oscillates between el nino conditions neutral. El nino and la nina the ocean and weather. The blue band is the thermocline approximately the location of water that is about 20ºc 50ºf.