On land, the passage of a severe storm might be marked by fallen trees or swollen streams. In the ocean, a hurricane leaves a swath of cold water in its path. That trail of cold water marks the passage of Hurricane Bertha through the North Atlantic Ocean in this sea surface temperature image.
Published Jul 26, 2008
La Niña, the large area of cold water in the Pacific Ocean widely blamed for last summer's drought and often related to an increase in the number of hurricanes that make landfall, appears to be on its last legs.
Published May 10, 2000
The convergence of warm and cold currents off the coast of Patagonia helps fuel large blooms of phytoplankton. This pair of images shows temperature and chlorophyll in November 2009.
Published Jan 12, 2010
One of the strongest ocean currents on Earth ferries heat from the tropics into the far North Atlantic and toward Europe.
Published Apr 20, 2005
The warm surface water this summer was caused by an unusual and persistent weather pattern.
Published Sep 13, 2019
The waters off of southwestern Africa are some of the most biologically productive in the world. They also provide a compelling backdrop for exploring how satellite sensors can reveal important details of the ocean.
Published Nov 1, 2017
This offshoot of the Circumpolar Current carries cool water north along the coast of South America until it encounters water pouring out of the Rio de la Plata.
Published May 7, 2005
