La Nina
La Nina is an Ocean – Atmospheric phenomenon occurring in the central Pacific Ocean. La Nina is the opposite of “El Nino” and means “Little Girl” in Spanish.
This complex climate phenomenon occurs as a result of strong Trade winds blowing from Southern America to Eastern Australian coast. Due to strong trade winds, warm water moves towards east Australian coast and creates a Low Pressure Region. It results in up-welling of cold currents near the South America (Peru) coast, because of which it forms an excellent fishing ground. High pressure region is created in Peru coast.
Due to this, an atmospheric and oceanic circulation is created between South American and Australian continents. Showers are seen in Australian coast while desertification increases in Peru coast. India Meteorological Department has forecasted colder winter in Northern and Central India, due to the La-Nina phenomenon prevalent over the Pacific Ocean.
