La Nina phenomenon against El Nino phenomenon (Spanish: La Ni? A), also known as La Ni? a phenomenon, is a phenomenon contrary to the El Ni? o phenomenon, so the Spanish El Ni? o phenomenon "El Ni? o" (El Ni? O) the feminine noun La Nina (La Ni? A) to represent, El Nino means "boy" (the definite article specifically refers to the boy, which means the young Jesus), and La Nina means "girl". Cause picture reference: upload.wikimedia/ * * */MONS/thumb/f/FB/Laninagrafik pos/18px-Laninagrafik pos picture reference: zh. * */Skins-1.5/mon/images/Magnify-ClipVolcker circulation caused by anti-El Nino phenomenon schematic diagram: El Nino phenomenon is the warming of seawater in the central and eastern Pacific Ocean, and anti-El Nino phenomenon is the central and eastern Pacific Ocean. Eastwind blows the sea water heated by the sun to the western Pacific Ocean, causing the sea level in the western part to rise by nearly 6 cm compared with that in the eastern part. The sea water temperature in the western part increases, the air pressure drops, the humid air accumulates to form typhoons and tropical storms, and the bottom sea water in the eastern part turns up, resulting in the cooling of the sea water in the eastern Pacific Ocean. The atmospheric circulation over the Pacific Ocean is called Volcker circulation. When the Volcker circulation weakens, the seawater cannot blow to the west, and the seawater in the eastern Pacific Ocean warms up, which is the El Nino phenomenon. But when the Volcker circulation becomes extremely strong, the phenomenon of anti-El Nino occurs. Generally, the phenomenon of anti-El Nino will follow the phenomenon of El Nino. In the second year of the phenomenon of El Nino, the phenomenon of anti-El Nino will appear, and sometimes it will last for two or three years. In 1988 -1989, 1998 -21 and 27 -28, strong anti-El Nino phenomena occurred, which made the seawater temperature in the eastern and central Pacific Ocean lower by 1-2℃ than normal, while the anti-El Nino phenomena occurred weakly in 1995 -1996 and early 26. Some scientists believe that the phenomenon of anti-El Nino tends to weaken due to global warming. El Nino phenomenon (Spanish: El Ni? O), also known as El Nino phenomenon, is a term used by fishermen in Peru and Ecuador to refer to an abnormal climate phenomenon. It mainly refers to the abnormal continuous warming of the seawater temperature in the tropical oceans in the eastern and central Pacific Ocean, which changes the climate pattern of the whole world, causing drought in some areas and excessive rainfall in others. Its frequency of occurrence is irregular, but it occurs on average about once every four years. Basically, if the phenomenon lasts less than five months, it will be called the condition)； of El Nino; If the duration is five months or more, it will be called an episode. El Nino means "El Nino" in Spanish, because this climate phenomenon usually begins around Christmas. And among them, ni? O means "boy" in Spanish, and El is the definite article. This phenomenon often lasts for several months or even more than one year, and its influence is extremely wide. The feminine noun of El Nino is La Ni? A) La Nina means "girl". There are many views on the cause of the formation of El Nino phenomenon in the scientific community. The common view is that under normal circumstances, the northeast trade wind blows near the equator in the northern hemisphere and the southeast trade wind blows near the equator in the southern hemisphere. The trade winds drive the seawater to flow from east to west, forming the North Equatorial Current and the South Equatorial Warm Current respectively. The seawater flowing out of the equatorial eastern Pacific Ocean is supplemented by the upwelling current in the lower layer, which makes the cold water in the lower layer in this area turn up and the water temperature is lower than the surrounding area, forming the temperature difference between the east and the west. However, once the cold water upwelling in the Pacific decreases or stops, the sea water temperature will rise, resulting in a large-scale abnormal weakening of sea water temperature, or even a westerly wind. When the cold water upwelling in the equatorial eastern Pacific decreases or stops, the sea water temperature will rise, resulting in a large-scale abnormal warming of sea water temperature. The sudden increase of this warm current invaded south along the coast of Ecuador, causing the seawater temperature to rise sharply, causing a large number of cold water fish to die. Seabirds left one after another because they could not find food, and the fishing grounds suddenly lost their vitality, causing great losses to coastal countries. Precursors of the formation of El Nino include: rising air pressure in the Indian Ocean, Indonesia and Australia; The sea surface pressure in Tahiti and the center and east of the Pacific Ocean drops; The trade wind in the South Pacific weakens or blows eastward; The warm air near Peru rises, making the local desert rain; Warm air spreads from the west coast of the Pacific Ocean to the east of the Indian Ocean and the Pacific Ocean. At the same time, it causes rain in drier and arid places in the east.
El Nino phenomenon (Spanish: El Ni? O), also known as El Nino phenomenon, is a term used by fishermen in Peru and Ecuador to refer to an abnormal climate phenomenon. It mainly refers to the abnormal continuous warming of the seawater temperature in the tropical ocean in the eastern and central Pacific Ocean, which changes the climate pattern of the whole world, causing drought in some areas and excessive rainfall in others. Its frequency of occurrence is irregular, but it occurs on average about once every four years. Basically, if the phenomenon lasts less than five months, it will be called El Nino condition; If the duration is five months or more, it will be called an El Nino event. El Nino means "El Nino" in Spanish, because this climate phenomenon usually begins around Christmas. And among them, ni? O means "boy" in Spanish, and El is the definite article. This phenomenon often lasts for several months or even more than one year, and its influence is extremely wide. The feminine noun of El Nino is La Ni? A) La Nina means "girl". La Nina phenomenon (Spanish: La Ni? A), also known as the anti-El Ni? o phenomenon, is a phenomenon opposite to the El Ni? o phenomenon, so the Spanish El Ni? o phenomenon "El Ni? o" (El Ni? O) the feminine noun La Nina (La Ni? A) to represent, El Nino means "boy" (the definite article specifically refers to the boy, which means the young Jesus), and La Nina means "girl".
reference: wiki