We thank the NCAR Oceanography Section for making the model output available to us. We also thank Dr. Patrick Cummins for providing the observed time series of winter pycnocline depth at Ocean Weather Station P, as well as useful comments on the manuscript, and the GLOBEC program for the long-term measurements at station GAK1. Doctor E. Firing and an anonymous reviewer have offered very valuable comments and suggestions that have greatly improved the manuscript. Author AC was supported by the NOAA/CIFAR program, and AJM was supported by NOAA/CIFAR (NA17RJ1231), NSF (OCE00-82543), and DOE (DE-FG03-01ER63255). The views expressed herein are those of the authors and do not necessarily reflect the views of NOAA or any of its subagencies.
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