11 May 2004
This composite of 7.5 km (4.7 mi) per pixel daily global images, acquired by the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC), shows water ice clouds over and to the east (right) of the Mars Exploration Rover (MER-B), Opportunity, landing site in Meridiani Planum. The "+" indicates the location of the rover site. Clouds high in the atmosphere above the Opportunity site have been a common occurrence in the afternoon for the past several weeks. This picture was obtained on 1 May 2004. The scale bar, 120 km (~75 mi), is approximate. North is toward the top/upper right. The bright area to the west (left) of the landing site is sunlight glinting off particles in the atmosphere and on the ground. The sun illuminates the scene from the left.

This and other images of both MER landing sites are featured each week in the MGS weather reports, located online at: http://www.msss.com/mars_images/moc/mer_weather/.