El nino and la nina powerpoint download

Enso is series of linked weather and oceanrelated phenomena. In economies that are dependent on certain weather conditions occurring regularly and on time annual summer rainfall, spring ice melt etc, erratic oscillations can cause problems. A free powerpoint ppt presentation displayed as a flash slide show on id. Enso involves largescale changes in seasurface temperature across the eastern tropical pacific. Generally, an ebook can be downloaded in five minutes or less.

Volcanicinduced global monsoon drying modulated by. Normal pacific conditions in normal years, atmospheric pressure is greater in the eastern pacific than in the western pacific. The strength of the animation is its ability to view changes between atmospheric pressure conditions and oceanic circulation in both the plan view and cross section. Jan 21, 2016 warmer or colder than average ocean temperatures in one part of the world can influence weather around the globe boggles the mind, right. An important atmospheric variation that has an average period of three to seven years. There remains large intersimulation spread in the hydrologic responses to tropical volcanic eruptions, and identifying the sources of diverse responses has important implications for assessing the side effects of solar geoengineering and improving decadal predictions. This university corporation for atmospheric research ucar article is an excellent enso tutorial, with links to many additional resources. During this shift, the surface water temperature off the coast of peru drops. Ppt redistribution from enso alters the landscape fire activity. Besides unusually warm or cool seasurface temperatures, enso is also characterized by changes in atmospheric pressure. This phase is characterized by warm winters in the southeastern united states, colderthannormal winters from the pacific northwest to the great lakes, and unsettled winters in the northeast and midatlantic states. Impacts and mechanisms master s thesis presentation by lt paula hildebrand march 15, 2001 powerpoint ppt presentation free to view.

Sea surface temperatures in the tropical pacific ocean are monitored with data buoys and satellites. Any strong change in enso statistics will therefore have serious climatic and ecological consequences. Most global climate models do simulate enso, although. The hurricane season of 2009 june 1 through november 30 was quieter than normal. The pattern can shift back and forth irregularly every two to seven years, and each phase triggers predictable disruptions of temperature, precipitation, and winds. Explain to students that scientists currently use a variety of toolssuch as satellites and buoysto monitor changes in the. Coupled because enso involves interaction between the ocean and the atmosphere both of which play a role in reinforcing changes in each other it is known as a coupled oceanatmosphere phenomenon. You will understand the differences between them, as well as some of. Powerpoint with suggested teacher explanation for each slide. If you continue browsing the site, you agree to the use of cookies on this website. Schlesinger, 1991, the trade winds winds that flow toward the equator blow from east to west across the coastal waters of the eastern pacific.

In this case, the warm water anomalies tend to stay in place in the central pacific. Thus indonesia and northern australia receive higher than normal precipitation. The sequence shows warm water anomalies red develop in the central pacific ocean. Winds that normally blow in a westerly direction weaken allowing the easterly winds to push the. Cyan, blue, and violet indicate sea surface height anomalies less than normal. Pacific sst analysis, animated, global, oneyear animation, nasa state of ocean, noaa state of the ocean weekly longlead briefing. You will understand the differences between them, as well as some of their effects on both ocean waters and weather patterns on land.