Atmospheric pressure plasma jets are a promising tool for a variety of applications. However, the small size of atmospheric pressure plasma jets limits their use to small scale processes and materials treatment. To address this issue, this work describes how to increase the plasma volume without additional power supplies or circuitry. Instead, additional noble gas streams are positioned orthogonal to the jet's direction of propagation which generates new plasma regions along these streams. This approach increases the plasma volume, which also increase the effective area available to interact with surfaces. The resulting augmented plasma is characterized with electrical, imaging, and time-integrated optical emission spectroscopy techniques. With these additional gas streams, the power required to drive the plasma jet increases sublinearly with the plasma volume, making this an attractive method to generate large area plasmas efficiently. The emission intensity of the He-air plasma lines along the plasma jet were compared to those in the added noble gas streams and were found to be similar in magnitude and follow similar trends as the main plasma jet. There does not appear to be a limit on the number of noble gas streams that can be added downstream of the plasma jet and thus volume expansion. [ABSTRACT FROM AUTHOR]