Tim Johnson
Senior Research Scientist, Fundamental and Computational Sciences Directorate, Chemical and Material Sciences Division, Chemical Structure and Dynamicshttp://emslbios.pnl.gov/id/johnson_t Updated: November 28, 2007
Dual Assignment
WR Wiley Environmental Molecular Sciences Laboratory / Environmental Spectroscopy & Biogeochemistry Facility
Matrixed Organization
Current Activities and Projects
Currently, Dr. Johnson is a member of a team involved in building the Northwest Infrared Database, a vapor-phase infrared spectral library used for a multitude of purposes, including environmental monitoring, fence-line monitoring, hazardous material response, and general scientific research. Dr. Johnson is part of an EMSL-based team for collaborations involving fundamental spectroscopy, both infrared and Raman, and is also working to develop infrared sensors, both FTIR-based and laser-based systems for atmospheric chemical sensing
Research Interests
- Atmospheric Chemistry
- Fate and Transport of Atmospheric Species
- Fourier Transform Infrared Spectroscopy
- Infrared Spectral Signatures
- Laser Spectroscopy for Environmental Sensing
- Optical Infrared Systems Development
- Remote Sensing of Toxins/Pollutants
- Step-scan FTIR Time-Resolved Spectroscopy
Past Experience
Before joining PNNL, Dr. Johnson conducted atmospheric chemistry research at the Max Planck Institute for Chemistry in Mainz, Germany, and worked as an FTIR applications and development scientist at Bruker Optics. He also served as a senior research scientist in sensor development for atmospheric chemistry at York University in Toronto. He has experience in step-scan FTIR, intracavity laser absorption spectroscopy, and infrared diode laser spectroscopy.
Education
Post-Doctoral Research Fellow, Max Planck Institute for Chemistry, Mainz, Germany, 1988-1992
Ph.D. in Chemical Physics Program (Spectroscopy), Washington State University, Pullman, Washington, 1987
B.A. in Chemistry (with distinction), cum laude, Carleton College, Northfield, Minnesota, 1981
Awards, Honors, & Appointments
- Member, Optical Society of America
- Member, American Geophysical Union, Atmospheric Division
- Phi Kappa Phi National Honor Society (1987 - present)
- National Need/Fabrication/Field Test Short Wave Infrared Spectrograph (2000)
- Certificate of Achievement, Pre-service Teacher Program (2001)
- National Security Directorate, Outstanding Team Performance Award, Gas Phase Spectral Library (2000)
- Max Planck Society Honorary Fellowship (1988-1990)
- Washington State University Graduate School Summer Fellowship (1985)
- 3M Corporation Outstanding Teaching Assistant Award (1982)
- Distinction in Senior Integrative Exercises, Chemistry Department, Carleton College (1981)
