Sea is the meeting of ocean water on the Earth’s surface. More than two-thirds of the Earth’s surface is covered by oceans and also the sea. Because of the large area, many fewer seas contribute to determining the climate in a region. Let us consider, countries in the form of islands with vast sea areas are larger than land with countries that do not have sea territory at all. Of course, the climate of the two countries is different right? Countries that do not have marine areas will certainly be drier, while countries that have a lot of marine areas get more rainfall. So from that, the sea will greatly affect the climate in a region.
In addition to the illustration above, what influence does the sea give to climate? Actually, the part of the sea that has a lot of influence on the climate is ocean currents. Ocean currents are horizontal or vertical movements of water masses leading to continuous stability. Now, this time we will discuss the influence of ocean currents on the climate. Some of the effects of the sea on the climate include the following:
- Cold ocean currents will cause a decrease in air temperature around the land, while hot ocean currents will raise temperatures around the land. The flow that leads to the polar region is generally hotter than the surrounding environment, so it is called heat flow. Conversely, the current leading to the equator region is generally cooler than the environment around it, so it is called a cold current. For example, for example, the North Atlantic Gulf Stream maintains winter temperatures along the coast in Western Europe above 0 degrees Celsius. Besides that, the influence of Kuroshio’s hot currents on the beaches around him.
- Hot currents generally result in increased rainfall, because the air above the ocean carries a lot of water vapor. Conversely, cold currents that carry a little water vapor and move to a hotter area, the moisture drops.
- The air formed above various currents can sometimes meet and some will condense to form a mist.
Now that’s some of the influence of the sea on the climate. The influence of this climate will have an impact on a wide area and can be experienced by several countries around the sea. In addition to some of the influences mentioned above, the relation of the sea to climate will also cause a big phenomenon that we know as El Nino and La Nina. What are El Nino and La Nina? Let’s discuss about this together.
- El Nino is an event where the sea temperatures in the Pacific Ocean heat up above the average normal temperature.
- La Nina is the incidence of falling seawater temperatures in the Pacific Ocean below the normal average temperature.
El Nino and La Nina are global events that occur for several reasons. There are several causes of El Nino and La Nina, including the following:
- Temperature anomalies that are striking in the waters of the Pacific Ocean
- Weakening trade winds in the south of the Pacific Ocean which caused wind movements far from normal
- Increase the capacity of the atmosphere layer caused by heating from the hot waters below
- There are differences in ocean currents in the waters of the Pacific Ocean
Now that’s some of the causes of El Nino and La Nina. Hopefully what we convey is useful for all of us.