IRIS Observations of Recurrent Coronal Jets

We report on the first IRIS observations of coronal jet initiation and evolution. Over a 5-hour period on July 21st 2013, recurrent coronal jets were observed by IRIS to emanate from NOAA AR 11793. In more than one instance, double-peaked FUV spectra probing plasma at transition region temperatures (~100,000 K) show evidence of oppositely directed (Doppler) outflows exceeding +/- 100 km/s. This result is consistent with magnetic reconnection as the mechanism for coronal jet initiation. Simultaneous observations of the region by SDO and Hinode suggest possible causes of the recurrent jets to be one (or a combination of) emerging flux, footprint rotation and flux cancellation. Time-dependent data-driven simulations are used to investigate the plausibility of these driving mechanisms.