Abstract: A fluid flux measurement system that includes a heated element fluid flow sensor that is capable of being repositioned relative to a mean fluid flux direction is disclosed. The repositioning may be performed by a motor interconnected to the heated element fluid flow sensor. The heated element fluid flow sensor may be positioned proximate to the measurement region of a sonic anemometer and may be operable to be repositioned relative to the sonic anemometer. The heated element fluid flow sensor may be a three-dimensional hot-film constant temperature anemometer. The fluid flux system may be operable to measure small-scale turbulent fluxes in uncontrolled environments such as remotely located atmospheric monitoring stations. The heated element fluid flow sensor may be calibrated in-situ with data collected by the sonic anemometer.

Abstract: A fluid flux measurement system that includes a heated element fluid flow sensor that is capable of being repositioned relative to a mean fluid flux direction is disclosed. The repositioning may be performed by a motor interconnected to the heated element fluid flow sensor. The heated element fluid flow sensor may be positioned proximate to the measurement region of a sonic anemometer and may be operable to be repositioned relative to the sonic anemometer. The heated element fluid flow sensor may be a three-dimensional hot-film constant temperature anemometer. The fluid flux system may be operable to measure small-scale turbulent fluxes in uncontrolled environments such as remotely located atmospheric monitoring stations. The heated element fluid flow sensor may be calibrated in-situ with data collected by the sonic anemometer.

Abstract: The portable intelligent whole air sampling system performs in situ air sampling over multiple time periods at individually programmable times, rates and volumes. The system contains multiple independent disposable syringes that collectively provide a large sampling capacity for a large number of samples over an extended period. In addition, the unit/sampler features a battery powered system for portability, operational ability in a wide variety of environmental conditions, an internal time stamping feature to record time and date of events, and microprocessor controlled program features for flexible sampling options. The removable cassette/carousel provides sample portability to a sample extraction device that functions opposite the field sample intake device. Sampling system mechanical components include a removable syringe cassette/carousel, a motorized carousel drive, a motorized plunger extractor, and a motorized syringe selection fork.