El Niño (also referred to as ENSO = El Niño Southern Oscillation) is a sequence of events that occurs in the southern Pacific Ocean.…
All currents in the northern hemisphere move in a clockwise direction, while in the southern hemisphere they move in an anti-clockwise direction. Suprisngly landmasses can be responsible for changing the course of a current. Differences in temperature and salinity are also responsible for the movement of ocean water. In the equatorial region, ocean water gets more heated than in the cold polar regions. This makes the water “light”. Water in the polar regions is cold and heavy, so it sinks and flows towards the equator. The light upper layers of water are thus forced to move towards the poles where they get cooled. Some effects are winds blowing. Winds blowing over a warm current can become warm, and at the same time, pick up moisture, as warm winds are able to retain more moisture. Therefore, the wind that reaches the land brings down the temperature and can cause heavy rain. The western coast of Europe for example, is one. Winds blow cold and dry air. They help to bring down the temperatures in places, which would have been much hotter. The California current which is cold, which flows along the western coast of the U.S, makes the region much cooler than other places in the west coast on…
El Nino is referring to the dramatic change that occurs in the walker circulation cell and in other areas but I am going to focus on this specific area, where the usually south-easterly trade winds going from west of South America to Australia and Indonesia across the Pacific Ocean reverse or severely weaken. This occurs usually every 3-7 years and can last between 12-18 months. During an El Nino the warm sea in the western pacific migrate towards the South American coast because they are being dragged across by the winds. This stops the upwelling near South America and means that there are little nutrients in the sea. This lack of nutrients ruins the South American fishing industry and courses them to loose lots of income and money, for example in 1982/83 El Nino the South American fishing industry lost $290 million. Also as you can sea from figure 7 there is lots of rain fall on the west coast of South America due to the low pressure, this heavy rain fall cause severe flooding and mudslides that result in loss of life, an example of this was in central Ecuador and Peru in 1997 when it suffered rainfall 10 times the average rainfall, this caused extensive flooding and erosion as well as mudslides, there was loss of life and destruction of property as the country wasn’t able to cope with the severe weather. On the other side of the pacific in Australia and Indonesia the cold weather reduces evaporation, which causes very little rain and therefore drought, for example in the 1982/83 El Nino eastern Australia suffered one of it’s worst drought ever, resulting in a $2000 million loss in agriculture production. It causes crop failure and famine and many people died as a result. The dry spell also causes bush fires and dust storms, and in very severe cases can induce desertification. Other areas of the world that were affected from El Nino are East Asia (china),…
1. A large number of fish and marine plants may die, the dead fish and birds may liter the water and beaches, their decomposing bodies deplete the waters oxygen. The El Nino event is often a cause for droughts causing more brush fires and crop failures. When it comes to wind; the El Nino decreases the strength of tropical storms and hurricanes.…
- Late summer and early fall strong tropical storms (typhoons) occur. Earthquakes and tidal waves are also threats.…
At this time the high tides are higher than normal and the low tides are lower thn normal. This is known as a spring tide. Spring tides are especially strong tides (but they do not have anything to do with the season Spring). They occur when the Earth, the Sun, and the Moon are in a line. The gravitational forces of the Moon and the Sun both, make the tides much stronger. During the moon's quarter phases the sun and moon work at right angles causing the bulges to cancel each other out. As a result there is a much smaller difference between high and low tides and is known as a neap tide. Neap tides are very weak tides. They occur when the gravitational forces of the Moon and the Sun are perpendicular to one…
The cold Pacific water increases drought occurrence in the United States and southern South America. The cold Atlantic irregular temperatures increases drought occurrence in southern Central America, northern South America, and central Africa. The warm Pacific and Atlantic water generally lead to reversals of the drought and a rainy period increases described with the corresponding cold water. Therefore another main cause of the dust bowl was abnormally cool surface temperatures in the Pacific Ocean because this caused a drought which was a major cause of the catastrophic event. (American Meteorological…
El Nino is referring to the dramatic change that occurs in the walker circulation cell and in other areas but I am going to focus on this specific area, where the usually south-easterly trade winds going from west of South America to Australia and Indonesia across the Pacific Ocean reverse or severely weaken. This occurs usually every 3-7 years and can last between 12-18 months. During an El Nino the warm sea in the western pacific migrate towards the South American coast because they are being dragged across by the winds. This stops…
global, long-term importance. El Nino brought a dry summer for some regions and wet winter…
Climate can be affected by many things. One of the biggest affects may be the motion of the tectonic plates. The Earths plates have been in motion approximately since its beginnings or shortly after, continuously causing climate to change. The Earth’s movement of plates as well as the apparent polar wandering can both play a role in this change. J. Adems thermodynamic meteorologic model traces the evolution of climate from the Triassic time period to the current time period. According to the results of this model “the gross changes of climate in the Northern Hemisphere can be fully explained by the strong cooling in high latitudes as continents moved poleward” (Donn, 2013). Today we continue to see climate changes around the world. There are many factors contributing to such changes however, the constant motion of the plates causing continents to drift is having a large impact on climate. Plate movement also contributes to increased volcanic activity. When a volcano erupts it releases carbon dioxide into the atmosphere which can cause global temperatures to rise. While this may not be a significant affect it is an example of how the motion of the tectonic plates can affect the climate.…
They say that the Earth warms and cools in a cyclical fashion, going to and fro through periods of warming, then cooling, then warming again. Some say that increased activity of the Sun is responsible.…
But the trend doesn’t hold up in the world’s other oceans” (nsf.gov, 2007). They did two studies in the year prior and found connections between the global warming and stronger hurricanes. Although in the past, hurricanes have been difficult to study, satellite data has made things easier. They also have stated that even though they can clearly see this “correlation between global warming and hurricane strength” they “still need to understand exactly why the Atlantic is reacting to warmer temperatures in this way” (nsf.gov,…
Explain what causes the "monsoon rain season". The summer season in southeast Asia experiences “monsoon rain seasons”. This occurs when a shallow thermal low develops over Asia’s continental interior, and the air within the low rises and begins to flow counter-clockwise. This motion results in moisture-bearing winds sweeping into land from the ocean. The humid air converges with dryer air from the continent, which has an additional lifting effect and brings the air to its saturation point. Heavy rains and thunderstorms result.…
Moreover, water can disappear into vapor, making it easier for the smaller storms to intensify into larger ones. This will cause major damage to land, houses, buildings, and more. Furthermore, all kinds of ocean life can get hurt, for example, reefs or kelp forests. With storms continuing to rise, multiply, and damaging the ocean, it gives less time for the more sensitive ocean life to recover from the horrible affliction that is occurring. In other words, having the ocean temperature rise, stronger forces of natural disasters will occur and affect many ocean…
Climate change is causing weather patterns to change. Central America already has harsh cyclone storms that come through and climate change is…