Open Positions

Shorcut to this page: http://tinyurl.com/JGjobs

General Information

• If you are interested in joining the Jimenez group, please have a look at the FAQs for prospective group members.

• PhD student positions: please have a look at the FAQs for prospective graduate students.

• After looking over those materials, please write to Jose if interested.

Open Positions, Fall 2013

Postdoctoral Position in Indoor Air Chemistry, posted Sept. 2013

A postdoctoral position is available for a joint project in the Ziemann and Jimenez Research Groups in CIRES and the Dept. of Chemistry and Biochemistry at the University of Colorado-Boulder. The position will involve laboratory and field studies of indoor air chemistry, with a primary focus on the composition of organic gases, aerosols, and surface films in authentic and simulated indoor environments and the molecular-level details of the physical-chemical processes that determine the composition. Experimental equipment will include a new Aerodyne Time-of-Flight Chemical Ionization Mass Spectrometer (ToF-CIMS) configured with several ion sources and aerosol/gas sampling interfaces.

A Ph.D. in chemistry, atmospheric sciences, environmental engineering, or a related discipline is required. Experience with use of advanced instrumentation and methods for online and offline analysis of organic gas, aerosol, and bulk samples, such as mass spectrometry, gas and liquid chromatography, and spectrophotometry, as well as computer programming and/or complex data analysis using Igor Pro or another data analysis package is highly desirable. Experience with laboratory or field studies of atmospheric organic chemistry are also desirable. Background information about the research groups, techniques, and previous publications and projects is available at the Ziemann Group Web Page and the Jimenez Group Web Page.

To apply, please send an email describing your research interests, a CV, date of availability, 2-3 first-author journal paper reprints in PDF, and a list of 4 references to Prof. Paul J. Ziemann (paul.ziemann@colorado.edu) and Jose L. Jimenez (jose.jimenez@colorado.edu). The initial appointment will be for one year starting in the fall of 2013, with the expectation of renewal for at least one additional year upon satisfactory performance. Later start dates are also possible. The University of Colorado is an equal opportunity employer.

This ad was posted on 2 Sept. 2013.

Postdoctoral Position in Secondary Organic Aerosol Modeling, posted Sept. 2013

A postdoctoral position is available in the Jimenez Research Group in CIRES and the Dept. of Chemistry and Biochemistry at the University of Colorado-Boulder, in collaboration with the Hodzic/Madronich groups at NCAR. The position will involve modeling of Secondary Organic Aerosol (SOA) formation in field studies and comparison to highly detailed ambient data. Modeling will use a range of approaches from parameterized models to the GECKO-A fully explicit model. Application will focus the on both ambient & Potential Aerosol Mass (PAM) flow reactor data from CalNex field study, but also potentially including the BEACHON-RoMBAS and SOAS field studies.

A Ph.D. in chemistry, atmospheric sciences, environmental engineering, or a related discipline is required. Experience with computer programming and/or complex data analysis using Igor Pro or similar data analysis software is required. Experience with field or laboratory studies of atmospheric organic chemistry is also desirable. Background information and previous publications from the Jimenez group is at our Jimenez Group Web Page, while information on our collaborators is on the Hodzic and Madronich pages at NCAR.

To apply, please send an email describing your research interests, a CV, date of availability, 2-3 first-author journal paper reprints in PDF, and a list of 4 references to Prof. Jose L. Jimenez (jose.jimenez@colorado.edu). The initial appointment will be for one year starting in the fall of 2013, with the expectation of renewal for at least one additional year upon satisfactory performance. Later start dates are also possible. The University of Colorado is an equal opportunity employer.

This ad was posted on 2 Sept. 2013.

Archive of Past Positions

This archive is kept here for future reference as we are very likely to search for people with similar profiles in the future.

Postdoc Position in OA Regional Modeling, advertised in Fall of 2011

A position in regional modeling of organic aerosols (OA) with a focus on the WRF/Chem model, will become available at NCAR in Fall 2011, for a collaborative project with the University of Colorado. The successful candidate will adapt and implement new mechanisms and parameterizations of OA and SOA formation, evolution, and loss into WRF/Chem, and evaluate the results using observations from recent large field campaigns (e.g. MILAGRO, BEACHON, GVAX etc.).

The ideal candidate will have:

• A Ph.D. in Chemistry, Atmospheric Sciences, or a related discipline.
• Experience with atmospheric chemistry & transport modeling (e.g. regional or global models).

Other modeling experience such as LES, master mechanism, box etc. is also beneficial.

The initial appointment will be for 1 year but the expectation is of renewal for up to 2 more years upon satisfactory performance. The start date should be in Spring or Summer 2012. Applications will be reviewed starting in Oct. 2011, and until the position is filled.

If you are interested in the position, please email Alma Hodzic <alma@ucar.edu> and Jose-Luis Jimenez <jose.jimenez@colorado.edu>, attaching a cover letter indicating your date of availability, your CV, PDFs of 2-3 first author publications, and contact information for 4-5 references. NCAR is an Equal Opportunity Employer.

Some previous publications from our collaborative research include Hodzic et al. ACP 2009; Hodzic et al., ACP 2010a; Hodzic et al., ACP 2010b; Hodzic and Jimenez, GMD 2011.

Staff Scientist Position, posted Nov. 2009

A Staff Scientist position in experimental atmospheric chemistry is available starting in early 2010. This position will be 50% "hard" funding (provided by CIRES and not tied to grants) and 50% soft money (tied to grants of the groups below) for at least 3 years, with the intention of continuing indefinitely. It will be centered in the Jimenez group (>= 50% time) and will be shared with the Volkamer Group (up to 50% time), and possibly with other atmospheric chemistry groups within CIRES & Chemistry (Tolbert and Vaida groups). The Staff Scientist will help train and work with students and postdocs, and co-supervise laboratory and field experiments and data analysis and modeling studies on atmospheric chemistry. An ideal candidate would be someone who loves research but prefers working as part of a group rather than working on a faculty position. Background information about the research groups, techniques, and previous publications and projects of these groups is available at:

• Jimenez Group Page
• Volkamer Group Page

• Tolbert Group Page
• Vaida Group Page

The ideal candidate will have:

• A Ph.D. in Chemistry, Atmospheric Sciences, or a related discipline.
• Postdoctoral experience
• Ability to make a commitment of 3-5 years to this position
• Experience with advanced instrumentation and data interpretation, such as mass spectrometry, optical spectroscopy, vacuum technology etc.
• Interest in working with students and postdocs and helping train them on lab techniques, see e.g. this list of lab skills
• Ability to travel to field studies to assist students & postdocs, especially during the setup phase and in case of problems (~4-8 weeks total travel time per year on average)
• Willingness to participate on aircraft-based field studies
• Desire and ability to communicate and work with multiple students and postdocs
• Experience with computer programming and data analysis, especially Igor Pro, but otherwise Matlab, Fortran, IDL etc.
• Experience with data acquisition programming with Labview (or similar software packages)
• Interest on having his/her own research projects, presenting results at conferences, and publishing some first-author papers
• Interest on participating on (and eventually potentially leading) proposal-writing

The initial appointment will be for 1 year but the expectation is of renewal for 3-5 years upon satisfactory performance. Please email jose.jimenez@colorado.edu if you are interested in this position, attaching a cover letter, your CV, 2-3 first author publications, and contact information for 4-5 references. The University of Colorado is an Equal Opportunity Employer.

This ad was posted on 14 Nov. 2009. This position was filled on 7-Feb-2010.

Postdoctoral Position in Aerosol Mass Spectrometry, posted Oct. 2009

A postdoctoral position is available in the Jimenez Research Group in CIRES and the Dept. of Chemistry and Biochemistry at the University of Colorado-Boulder. This position focuses on field studies of organic aerosol sources and processing using high-resolution aerosol mass spectrometry (HR-ToF-AMS) and thermal desorption aerosol GC-MS (TAG) as part of the CalNex-LA-2010 and BEACHON-SRM-2011 field studies. Both field studies will provide excellent research opportunities and complementary data from many advanced instruments. Information on these studies can be found at:

• CalNex-LA

• BEACHON

A Ph.D. in chemistry, atmospheric sciences, environmental engineering, or a related discipline is required. Experience in experimental research is needed. Experience with instrument design and construction, advanced instrumentation use, computer programming, and/or complex data analysis is highly desirable. Experience with mass spectrometry, vacuum technology, aerosol instrumentation, Igor Pro or another data analysis package, Labview, or field studies are also desirable. Ability to travel to field studies, to work in a team with members of our group and multiple collaborators, and to lead the writing of papers for peer-reviewed journals is essential. Background information about the research group, techniques, and previous publications and projects is available at:

• Jimenez Group Page

Four papers that describe the techniques and scientific problems that our group focuses on can be downloaded from:

• Aiken et al., ACP 2009
• de Gouw and Jimenez, ES&T 2009
• Canagaratna et al., Mass Spec. Rev. 2007
• Hallquist et al., ACP 2009

and many additional publications can be downloaded from our group publications page:

• Group Publications Page

To apply, please send an email describing your research interests, a CV, date of availability, 2-3 first-author journal paper reprints in PDF, and a list of 4 references to Prof. Jose L. Jimenez (jose.jimenez@colorado.edu). The initial appointment will be for one year starting around Jan. 2010, with the expectation of annual renewal for two additional years upon satisfactory performance. Later start dates are also possible. The University of Colorado is an equal opportunity employer.

This ad was posted on 4 Oct. 2009. This position was filled on 23 Nov. 2009.