Bowdoin College, Department of Physics & Astronomy 8800 College Station, Brunswick, ME 04011-8488, United States
Scripps Institution of Oceanography, 9500 Gilman Drive, La Jolla, CA 92093-0230, United States
NOAA/ESRL, 325 Broadway, Boulder, CO 80305, United States
Bowdoin College, Department of Physics & Astronomy 8800 College Station, Brunswick, ME 04011-8488, United States ; Now at University of Washington, Department of Atmospheric Sciences Box 351640, Seattle, WA 98195,
NOAA/ESRL, 325 Broadway, Boulder, CO 80305, United States