Science - Orbiting Carbon Observatory Science: People: Charles Miller

Acquisition and Analysis of High Resolution Near-Infrared Spectra
The research involves the acquisition and analysis of high resolution near infrared spectra to obtain accurate line positions, intensities and line shape parameters of atmospherically important molecules. The spectra will be acquired using a new Bruker 125 HR Fourier transform spectrometer (FTS) and the McMath-Pierce FTS at the Kitt Peak National Solar Observatory. This research will provide fundamental inputs needed to analyze and validate data from the satellite instruments for the Orbiting Carbon Observatory (OCO), Thermal Emission Spectrometer (TES), Atmospheric Infrared Sounder (AIRS) as well as future remote sensing instruments.

High Resolution Molecular Spectroscopy
Our research focuses recording and analyzing high resolution molecular spectra and employing this knowledge to support remote sensing and new mission concept design. Laboratory studies concentrate on rotationally resolved molecular spectra obtained in the microwave, infrared and near infrared using a variety of state-of-the-art spectrometers at JPL as well as national user facilities like the McMath-Pierce Fourier transform spectrometer at the Kitt Peak National Solar Observatory. We provide reference standard spectral parameters for important species (eg CO2, O2, H2O) and search for new atmospherically relevant molecules (eg HOONO, OBrO, OIO). We leverage this information to understand better the Earth system, planetary atmospheres, and the likely signatures of extra-solar terrestrial and/or habitable planets. We also work closely with sub-orbital and space-based remote sensing experts to design new missions and instruments. Measurments from the JPL Molecular Spectroscopy group are currently used by the Orbiting Carbon Observatory (OCO), the Tropospheric Emission Spectroemter (TES), the Microwave Limb Sounder (MLS), the Atmospheric Infrared Sounder (AIRS) projects, as well as the HITRAN molecular spectroscopy database.

OCO - Orbiting Carbon Observatory
The Orbiting Carbon Observatory (OCO) is a mission designed to make precise, time-dependent global measurements of atmospheric carbon dioxide (CO₂) from an Earth orbiting satellite.

Jet Propulsion Laboratory (2003 - present)

Research Scientist, Atmospheric Chemistry/Molecular Spectroscopy (2003-present)
Deputy Principal Investigator, Orbiting Carbon Observatory (2001 - present)

Assistant Professor, Department of Chemistry, Haverford College (1997 - 2003)
National Research Council Resident Research Associate, NASA Jet Propulsion Laboratory (1994 - 1997)
Welch Postdoctoral Fellow, Rice University (1991-1994)

NASA/ASEE Summer Faculty Fellowship (1998)
National Research Council Associateship, NASA Jet Propulsion Laboratory (1994-1997)
Robert A. Welch Postdoctoral Fellowship, Rice University (1991-1994)
Regents Fellowship, University of California, Berkeley (1986-1987)

D. Crisp et al., "The Orbiting Carbon Observatory (OCO). 2. Current X_CO2 measurement capabilities," manuscript in preparation.
D. Crisp et al., "The Orbiting Carbon Observatory (OCO). 1. X_CO2 science measurement requirements," manuscript in preparation.
D. Crisp et al., "The Orbiting Carbon Observatory (OCO) Mission," Adv. Space Res. 34, 700 doi:10.1016/j.asr.2003.08.062 (2004)
C. E. Miller, M. Montgomery, R. Onorato, C. Johnstone, T. McNicholas, B. Kovaric and L. R. Brown, "Near Infrared Spectroscopy of Carbon Dioxide. II. ₁₆O₁₃C₁₆O and ₁₆O₁₃C₁₈O Line Positions," Journal of Molecular Spectroscopy, in press.
C. E. Miller and L. R. Brown, "Near Infrared Spectroscopy of Carbon Dioxide. I. ₁₆O₁₂C₁₆O Line Positions," in press, Journal of Molecular Spectroscopy.
R. M. Onorato and C. E. Miller, "The Photo-induced Isotopic Fractionation Effects in the Heavy Ozone Anomaly," submitted to Science.
C. E. Miller and J. S. Francisco, "Proton Affinity of Peroxyacetic Acid," J. Phys. Chem A 108, 2930 DOI: 10.1021/jp036748w (2004)
B. J. Drouin, J. L. Fry and C. E. Miller, "Rotational Spectrum of cis-cis HOONO," J. Chem. Phys. 120 (12), 5505 doi:10.1063/1.1687311 (2004)
L. E. Christensen, M. Okumura, S. P. Sander, R. R. Friedl, C. E. Miller and J. J. Sloan, "Measurements of the Rate Constant of HO₂ + NO₂ + N₂ --> HO₂NO₂ + N₂ Using Near-Infrared Wavelength-Modulated Spectroscopy and UV-Visible Absorption Spectroscopy," J. Phys. Chem A 108, 80 DOI: 10.1021/jp035905o (2004)
C. E. Miller and E. A. Cohen, "Rotational Spectroscopy of Iodine Dioxide, OIO," J. Chem. Phys. 118 (14), 6359 doi:10.1063/1.1540107 (2003)
C. E. Miller, in Low-Lying Potential Energy Surfaces, M. R. Hoffmann and K. G. Dyall, Ed., "The X₁(₂ _3/2) and X₂(₂ _1/2) Potentials of the Halogen Monoxides: A Comparison of RKR and Ab Initio Results," ACS Symp Ser. 828 (Washington, DC, 2002)
C. E. Miller and J. S. Francisco, "A quadratic configuration interaction study of the proton affinity of acetic acid," Chem.Phys. Lett. 364, 427 doi:10.1016/S0009-2614(02)01348-9 (2002)
S. G. Chou, D. T. Petkie, R. A. H. Butler and C. E. Miller, "Rotational Spectroscopy of DNO₃," J. Mol. Spectrosc. 211, 284 doi:10.1006/jmsp.2001.8482 (2002)
C. E. Miller and E.A. Cohen, "Rotational Spectroscopy of IO," J. Chem. Phys. 115 (14), 6459 doi:10.1063/1.1398308 (2001)
C. E. Miller and J. S. Francisco, "The Formation of a Surprisingly Stable HO₂-H₂SO₄ Complex," J. Am. Chem. Soc. 123, 10387 DOI: 10.1021/ja016268n (2001)
B. J. Drouin, C. E. Miller, E. A. Cohen, G. Wagner and M. Birk, "Further Investigations of the ClO Rotational Spectrum," J. Mol. Spectrosc. 207, 4 doi:10.1006/jmsp.2001.8332 (2001)
C. E. Miller and J. S. Francisco, "Symmetry Breaking and the Structure of NO_{3 +}," J. Phys. Chem A 105, 1662 DOI: 10.1021/jp002349e (2001)
D. Herschbach, C. E. Miller, C. B. Moore, and S. E. Schwartz, "Introduction to the Harold Johnston Festschrift," J. Phys. Chem A 105, 1385 DOI: 10.1021/jp010054a (2001)
C. E. Miller and B. J. Drouin, "The X_{1 2} _3/2 and X_{2 2} _1/2 Potential Energy Surfaces of FO," J. Mol. Spectrosc. 205, 312 doi:10.1006/jmsp.2000.8257 (2001)
C. E. Miller and J. S. Francisco, "Proton Affinity of Peroxyacetyl Nitrate (PAN)," J. Phys. Chem A. 105, 750 DOI: 10.1021/jp0030185. (2001)
B. J. Drouin, C. E. Miller, H. S. P. Müller, E. A. Cohen, "The Rotational Spectrum of BrO," J. Mol. Spectrosc. 205, 128 doi:10.1006/jmsp.2000.8252 (2001)
C. E. Miller, Y. L. Yung, "Photo-Induced Isotopic Fractionation," J. Geophys. Res. D 105, 29039 (2000)
C. E. Miller and Y. L. Yung, "Photo-induced Isotopic Fractionation in Stratospheric N₂O," Chemosphere: Global Change Science, 2, 255 (2000)
T. V. Duncan and C. E. Miller, "The HCO2 Potential Energy Surface: Stationary Point Energetics and the HOCO Heat of Formation," J. Chem. Phys. 113, 5138 doi:10.1063/1.1312824 (2000)
C. E. Miller, J. Lynton, D. Keevil, and J. S. Francisco, "The Dissociation Pathways of Peroxyacetyl nitrate (PAN)," J. Phys.Chem A 103, 11451 DOI: 10.1021/jp992667h (1999)