Earth Science - El Niño La Niña (2)

- Pacific Ocean 1. Monitoring Area: Nino 3.4 2. Longitude and Latitude: 5 degrees North/South, 170-120 degrees West longitude (Eastern Pacific) 3. Phenomenon Monitored: El Niño/La Niña 4. Judgment Criteria: Sustained change of 0.5 degrees Celsius or more compared to the average for 5 months This is a representative indicator of global climate change, and all equatorial waters are monitored by dividing them into Nino 1.2.3.4. - Atlantic Ocean 1. Monitoring Area: ATL3 2. Longitude and Latitude: 3 degrees North/South, 0-20 degrees West longitude (Eastern Atlantic) 3. Phenomenon Monitored: Atlantic El Niño/La Niña 4. Judgment Criteria: Immediately upon a change of 0.5 degrees Celsius or more compared to the average Compared to the Pacific, the influence is indirect, with different timing of occurrence and shorter duration. - Indian Ocean 1. Monitoring Area: Near Indonesia (East), Near Africa (West) 2. Longitude/Latitude omitted (due to character count) 3. Phenomenon Monitored: Indian Ocean Dipole Mode (West minus East deviation), positive and negative phases 4. Judgment Criteria: Sustained change of (+/-) 0.4 degrees Celsius or more for over 3 months Eastern and Western Indian Oceans are connected by waterways, so temperature deviations tend to synchronize directly.