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The Open Cluster Chemical Analysis and Mapping (OCCAM) Survey aims to producea comprehensive, uniform, infrared-based dataset for hundreds of open clusters,and constrain key Galactic dynamical and chemical parameters from this sample.This first contribution from the OCCAM survey presents analysis of 141 membersstars in 28 open clusters with high-resolution metallicities derived from alarge uniform sample collected as part of the SDSS-III/Apache Point ObservatoryGalactic Evolution Experiment (APOGEE). This sample includes the firsthigh-resolution metallicity measurements for 22 open clusters. With thislargest ever uniformly observed sample of open cluster stars we investigate theGalactic disk gradients of both [M/H] and [alpha/M]. We find basically nogradient across this range in [alpha/M], but [M/H] does show a gradient forR_{GC} < 10 kpc and a significant flattening beyond R_{GC} = 10 kpc. Inparticular, whereas fitting a single linear trend yields an [M/H] gradient of-0.09 +/- 0.03$ dex/kpc --- similar to previously measure gradients inside 13kpc --- by independently fitting inside and outside 10 kpc separately we find asignificantly steeper gradient near the Sun (7.9 <= R_{GC} <= 10) thanpreviously found (-0.20 +/- 0.08 dex/kpc) and a nearly flat trend beyond 10 kpc(-0.02 +/- 0.09 dex/kpc).

The Open Cluster Chemical Analysis and Mapping Survey: Local Galactic Metallicity Gradient with APOGEE using SDSS DR10