El Nino, June 2023. Globe showing central and eastern Pacific Ocean height anomalies between the 1st and 10th June 2023. Blue areas are lower than average, normal sea levels are white and yellow and red areas are higher than average. Water expands as it warms and so warm areas of the ocean are higher than cool areas. The red area across centre is indicative of an El Nino event. El Nino effects weather systems across the world, causing drier conditions in Australia and South-East Asia, and wetter and warmer conditions in the Americas, with often dire effects for agriculture. Image obtained by the Sentinel-6/Michael Freilich and Sentinel-3B satellites.