CIRES/Jimenez Research Group Post-Doctoral Researcher in Aerosol Mass Spectromet
University of Colorado Boulder, Boulder, CO, United States
Job Summary
The Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado at Boulder (CU Boulder) announces a position for a Post-Doctoral Associate in the Jimenez Research Group. The postdoctoral researcher will conduct data analysis of previously acquired aerosol mass spectrometer (AMS) data from multiple field campaigns to quantify halogen (I, Br, Cl) species in the particle phase.
Who We Are
CIRES is an internationally recognized leader in environmental science and research at the University of Colorado Boulder. More than 900 professionals work to understand the dynamic Earth system, including weather, climate, air quality, atmospheric chemistry, and more. CIRES has partnered with NOAA since 1967 and focuses on topics such as changes at Earth’s poles, water resources, and solid Earth sciences. The Jimenez Research Group conducts laboratory and field studies of sources and chemistry of aerosols, measuring gas‑ and particle‑phase species with chemical ionization mass spectrometer (CIMS) and AMS on ground, airborne platforms, and environmental chambers.
Responsibilities
Conduct data analysis to quantify atmospheric particulate halogens from AMS data acquired from previous field measurements (30%).
Perform laboratory calibrations as needed to interpret the field observations (20%).
Perform box modeling using airborne in‑situ observations (10%).
Finalize existing drafts of journal papers for submission to scientific journal peer‑review (40%).
What You Should Know
4‑month in‑person appointment at the CU Boulder campus.
Must be able to start work by May 4, 2026.
No visa sponsorship; must be authorized to work full time in the U.S. by the start date.
Remote work will not be allowed.
What We Can Offer
Generous compensation package, annual salary range $55,000.
Commensurate with education and experience, determined by CIRES internal career track classification.
University of Colorado Boulder offers a robust training curriculum, professional development opportunities, and a mentorship program.
Boulder community offers access to mountain parks, trails, rivers, lakes, cafes, restaurants, boutiques, theaters, museums, and sports venues.
Free access to regional public transit system, including buses and light rail connecting Boulder to Denver and surrounding communities.
Benefits
The University of Colorado Boulder provides a comprehensive benefits package that includes medical, dental, and retirement plans; generous paid time off; tuition assistance for employees and dependents; and an ECO Pass for local transit. Employees also have access to world‑class outdoor recreation and additional perks through the CU Advantage program.
EEO Statement
CU is an Equal Opportunity Employer and complies with all applicable federal, state, and local laws governing nondiscrimination in employment. We are committed to creating a workplace where all individuals are treated with respect and dignity, and we encourage applicants from all backgrounds, including protected veterans and individuals with disabilities.
Requirements
PhD degree in chemistry.
At least 5 years of experience measuring halogen species with aerosol mass spectrometry.
Preferred Qualifications
Experience with the Aerodyne aerosol mass spectrometer (AMS).
Experience with laboratory and field studies, especially on aircraft platforms.
Experience with data analysis methods for mass spectrometers.
Experience with box models and/or global chemical transport models.
Experience with the Igor Pro software and programming within it.
Knowledge of mechanisms of atmospheric halogen compounds.
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The Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado at Boulder (CU Boulder) announces a position for a Post-Doctoral Associate in the Jimenez Research Group. The postdoctoral researcher will conduct data analysis of previously acquired aerosol mass spectrometer (AMS) data from multiple field campaigns to quantify halogen (I, Br, Cl) species in the particle phase.
Who We Are
CIRES is an internationally recognized leader in environmental science and research at the University of Colorado Boulder. More than 900 professionals work to understand the dynamic Earth system, including weather, climate, air quality, atmospheric chemistry, and more. CIRES has partnered with NOAA since 1967 and focuses on topics such as changes at Earth’s poles, water resources, and solid Earth sciences. The Jimenez Research Group conducts laboratory and field studies of sources and chemistry of aerosols, measuring gas‑ and particle‑phase species with chemical ionization mass spectrometer (CIMS) and AMS on ground, airborne platforms, and environmental chambers.
Responsibilities
Conduct data analysis to quantify atmospheric particulate halogens from AMS data acquired from previous field measurements (30%).
Perform laboratory calibrations as needed to interpret the field observations (20%).
Perform box modeling using airborne in‑situ observations (10%).
Finalize existing drafts of journal papers for submission to scientific journal peer‑review (40%).
What You Should Know
4‑month in‑person appointment at the CU Boulder campus.
Must be able to start work by May 4, 2026.
No visa sponsorship; must be authorized to work full time in the U.S. by the start date.
Remote work will not be allowed.
What We Can Offer
Generous compensation package, annual salary range $55,000.
Commensurate with education and experience, determined by CIRES internal career track classification.
University of Colorado Boulder offers a robust training curriculum, professional development opportunities, and a mentorship program.
Boulder community offers access to mountain parks, trails, rivers, lakes, cafes, restaurants, boutiques, theaters, museums, and sports venues.
Free access to regional public transit system, including buses and light rail connecting Boulder to Denver and surrounding communities.
Benefits
The University of Colorado Boulder provides a comprehensive benefits package that includes medical, dental, and retirement plans; generous paid time off; tuition assistance for employees and dependents; and an ECO Pass for local transit. Employees also have access to world‑class outdoor recreation and additional perks through the CU Advantage program.
EEO Statement
CU is an Equal Opportunity Employer and complies with all applicable federal, state, and local laws governing nondiscrimination in employment. We are committed to creating a workplace where all individuals are treated with respect and dignity, and we encourage applicants from all backgrounds, including protected veterans and individuals with disabilities.
Requirements
PhD degree in chemistry.
At least 5 years of experience measuring halogen species with aerosol mass spectrometry.
Preferred Qualifications
Experience with the Aerodyne aerosol mass spectrometer (AMS).
Experience with laboratory and field studies, especially on aircraft platforms.
Experience with data analysis methods for mass spectrometers.
Experience with box models and/or global chemical transport models.
Experience with the Igor Pro software and programming within it.
Knowledge of mechanisms of atmospheric halogen compounds.
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