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The Nancy Grace Roman Space Telescope (Roman) mission is expected to launchin the mid-2020s. Its weak lensing program is designed to enable unprecedentedsystematics control in photometric measurements, including shear recovery,point-spread function (PSF) correction, and photometric calibration. This willenable exquisite weak lensing science and allow us to adjust to and reliablycontribute to the cosmological landscape after the initial years ofobservations from other concurrent Stage IV dark energy experiments. Thispotential requires equally careful planning and requirements validation as themission prepares to enter its construction phase. We present a suite of imagesimulations based on GalSim that are used to construct a complex, syntheticRoman weak lensing survey that incorporates realistic input galaxies and stars,relevant detector non-idealities, and the current reference five-year Romansurvey strategy. We present a first study to empirically validate the existingRoman weak lensing requirements flowdown using a suite of 12 matched imagesimulations, each representing a different perturbation to the wavefront orimage motion model. These are chosen to induce a range of potential static andlow- and high-frequency time-dependent PSF model errors. We analyze themeasured shapes of galaxies from each of these simulations and compare them toa reference, fiducial simulation to infer the response of the shape measurementto each of these modes in the wavefront model. We then compare this to existinganalytic flowdown requirements, and find general agreement between theempirically derived response and that predicted by the analytic model.

A Synthetic Roman Space Telescope High-Latitude Imaging Survey: Simulation Suite and the Impact of Wavefront Errors on Weak Gravitational Lensing