The study done by this team came to the conclusion that ocean temperatures below 300 meters have been raised a tenth of a degree Fahrenheit since the 1950s. Also, closer to the surface, ocean waters have increased in temperature by about 0.5 degrees (Pawelski, 2000). The principal author of this study and chief of National Oceanic and Atmospheric Administration’s Ocean Climate Laboratory, Sydney Levitus, said, “These temperature changes may seem small, but they represent very large changes in heat content of the ocean, and this heat will eventually find it its way back to the atmosphere.” (Pawelski, 2000). Thus, although these temperature changes in the ocean seem small, they can have quite a large effect on our Earth’s atmosphere. Levitus also mentions that a large portion of global warming that seems to be absent in our atmosphere is actually in our oceans.
The Quantitative Distribution and Characteristic of Neuston Plastic in the North Pacific Ocean. Alaska: University of Alaska. Gorman, S. (2009, Aug 4). Scientists study huge plastic patch in Pacific. Retrieved from Recters: http://www.reuters.com/article/idUSTRE5730ET20090804 Moorel, C. J.
Descending a... ... middle of paper ... ...han those in Central Europe. Prevailing winds from the south west, passing over the ocean current are warmed and pick up large amounts of moisture. The precipitation, caused when the air is forced to rise over mountains or at fronts, provides the British Isles with a reliable precipitation all year. Cold ocean currents from colder polar waters have a contrasting effect. Those flowing south along coasts in the northern hemisphere keep summer temperatures cooler and the air drier than normal for that latitude.
(Moran, 2011) Hurricanes begin as smaller storms called tropical disturbances, if the storm experiences a sufficient loss in surface air pressure coinciding with a strengthening sustained wind the storm is then upgraded to a tropical depression. As the storm continues to intensify and the wind speeds reach 63km/h it then becomes a tropical storm and is finally given a name. When the storm continues to grow in strength and reaches wind speeds of 119km/h it then becomes a hurricane. (Moran,2011) Global warming is described as an increase of average temperature throughout the globe over an extended period of time. Typically when scientists use the term global warming they use it to describe rising temperatures due to human actions such as the burning of fossil fuels and release of aerosols into the atmosph... ... middle of paper ... ...f America, Boston MA: The American Meteorological Society.
Usually, the wind blows strongly from east to west along the equator in the Pacific. This actually piles up water (about half a meter's worth) in the western part of the Pacific. In the eastern part, deeper water (which is colder than the sun-warmed surface water) gets pulled up from below to replace the water pushed west. So, the normal situation is warm water (about 30 C) in the west, cold (about 22 C) in the east. In an El Niño, the winds pushing that water around get weaker.
Remember the days of fresh air and normal weather patterns? Now more carbon dioxide than ever has resulted in global warming. It is a major issue within our environment. Global warming is able to change weather patterns drastically. Temperatures are gradually increasing each year.
The slight weakening of the winds cause a small change in sea surface temperatures, and the wind and pressure changes increase. The warm water of the western Pacific Ocean flow eastward and sea surface temperatures increase on the western coast of South America. When this occurs, the wet weather conditions (originally in the western Pacific) move east, and dry conditions (normally in the east) appear in the west. During El Niño?s in the Pacific Northwest, the amount of precipitation greatly decreases, the winter temperatures get milder, and winter has below-average precipitation. Some economical and environmental impacts are that erosion is increasing due to severe storm surges, concerns that property built on low-lying areas or on top of unstable bluffs possibly be flooded or threatened by landslides due to regional climate changes, and various salmon species potentially endangered.
1) What is the El Niño Southern Oscillation (ENSO)? The combination of El Nino and the Southern Oscillation goes by the acronym ENSO. Southern Oscillation is an index which observes higher than average air pressure and the temperature between the ocean and atmosphere in the east central equatorial pacific. El Nino is the warming of the ocean surface. According to NOAA, during this time frame rainfall over Indonesia reduces while rainfall increases over the tropical Pacific Ocean.
This affects jet streams, bands of fast-moving high altitude air currents. These streams supply energy to developing storms at lower altitudes. The ocean alters the direction of storms and some storms even reverse direction as result of ocean-influenced air pressure changes. The current in the ocean distributes the effects of weather worldwide. Some currents carry warm water from the tropical and subtropical regions toward the poles, whil... ... middle of paper ... ... are many factors that contribute to the weather and climate but it is the ocean along with the sun that is responsible for creating such drastic weather changes.