Ward, Alan, <br/><br/>
Weighing Earth's Water from Space. 
Alan Ward. 
 -  Earth Observatory,  2003. 
 - SIRS Enduring Issues 2004.  Article 101,  Science,  1522-3264; .
<br/><br/> Articles Contained in SIRS Enduring Issues 2004.  Originally Published: Weighing Earth's Water from Space, Dec. 23, 2003; pp. n.p.. 
<br/><br/> "Set against the velvet blackness of outer space, our home planet looks like a 'blue marble'--bright, shimmering, and mostly fluid. Indeed, it is the abundance of water on its surface that gives Earth its blue appearance." (EARTH OBSERVATORY) This article explains how scientists use two NASA satellites to track fresh water on the Earth. 
<br/><br/><label>ISSN: </label>1522-3264; 
<br/><br/><label>Subjects--Corporate Names: </label><br/>United States National Aeronautics and Space Adm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquifers<br/>Artificial satellites in earth sciences<br/>Artificial satellites in meteorology<br/>Environmental monitoring<br/>Fresh water<br/>Gravitational fields<br/>Gravity Recovery and Climate Experiment<br/>Groundwater<br/>Hydrologic cycle
<br/><br/><label>LC Class. No.: </label>AC1.S5 
<br/><br/><label>Dewey Class. No.: </label>050