Agricultural gas exchange research. Hydrologist checking the position of a water vapour/CO2 (carbon dioxide) sensor on a micrometeorological tower. In combination with the adjacent sonic anemometer, which measures horizontal and vertical wind, these instruments measure the turbulent exchange of water, energy, and CO2 between the soil-plant system and the lower atmosphere. Photographed at the Optimizing Production Inputs for Economic and Environmental Enhancement (OPE3) study area, Beltsville, Maryland, USA. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Greb, Peggy / US Department of Agriculture |
Bildgröße: | 2500 px × 3750 px |
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