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ARS Home Office of Communications Images Photos Sept20





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D4221-1headline bar  A scientist kneeling beside sensing equipment in a field **Image Number D4221-1** Greg McCarty, a soil scientist with HRSL, calibrates sensors that measure nitrate, organic carbon, and turbidity of stream waters in real time. Several of these newly developed sensor systems have been deployed in the Chesapeake Bay watershed near U.S. Geological Survey stream gauges. The data obtained from these sensors is being used to examine effects of drought and precipitation on the total amount of nutrients and sediment delivered to the bay.  Photo by Peggy Greb. 640 pixels wide: (D4221-1.jpg)   Please visit our Image Gallery.


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