Fog Blankets the Yellow Sea. In spring, it’s not uncommon for a cloak of thick fog to cover the Yellow Sea. The shallow sea, which has a number of busy ports, usually sees 50 foggy days a year; some weather stations in the area have measured fog on up to 80 days.
One of those days was March 28, 2012, when the Moderate Resolution Imaging Spectroradiometer (MODIS) on the Aqua satellite captured this natural-color image (top) of a fog bank hugging the Korean coast. The low-lying cloud formation covered an area roughly the size of the Korean Peninsula, stretching nearly 900 kilometers (400 miles) from Korea Bay to the Chinese city of Shanghai.