[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Energy & Environm, Berkeley, CA 94720 USA
[4] Harvard Univ, Dept Chem & Biol Chem, Cambridge, MA 02138 USA
[5] Harvard Univ, Dept Earth & Planetary Sci, Cambridge, MA 02138 USA
[6] Univ Colorado, Dept Chem, Boulder, CO 80309 USA
[7] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA
[8] CALTECH, Div Engn, Pasadena, CA 91125 USA
[9] CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA
[10] NOAA, Aeron Lab, Boulder, CO 80303 USA
[11] Univ Denver, Dept Mech Engn, Denver, CO 80208 USA
[12] Environm Canada, Downsview, ON M3H 5T4, Canada
[13] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA