Prospective students are encouraged to apply to CSU Chemistry. Prospective postdoctoral candidates are encouraged to send their CV to Delphine by email along with a letter of interest.

May 28, 2025

Congratulations to Tyson Berg (PhD), Roman Liedtke (MS), and Tony Hernandez (BS)! Well-earned degrees - we wish Tyson and Roman success in their future careers and are happy to have Tony continue with us for his MS degree.

December 10, 2024

Congratulations to Cam Osburn and Alyssa Belanger for graduating with their BS degrees this week! And welcome to Sara, Emma, and Morgan, our new PhD students!

August 2, 2023

Despite being slow to update, many things have happened in the past year and a half! In particular, congratulations to

February 16, 2023

Congratulations to Katelyn Rediger for being selected to the AGU Voices of Science program for 2023-24! And for receiving an Air and Waste Management Association scholarship!

June 27, 2022

Huge congratulations to DR. Mj Riches and DR. Erin Boedicker, both of whom passed their defenses with grace, intelligence, and wit. And did we mention spectacular dissertations covering complex-but-important issues?   Mj tackled plant emissions of biogenic hydrocarbons, from physiological drivers to instrument development to field measurements and models. Erin tackled particle deposition, from indoor environments to pine forests to the Arctic. 

June, 2022

*Position filled

Postdoc Position Announcement! We are looking for a postdoc to help develop the Fluxes of AerosoL Continuous Observing Network (FALCON). FALCON is a collaboration between Delphine Farmer’s group at Colorado State University and Ethan Emerson at Handix Scientific. The project will include working with Handix Scientific to assemble portable optical particle sensors coupled to sonic anemometers for deployment and eddy covariance analysis of size-resolved particle fluxes. Measurements will initially take place at one site for an intercomparison, followed by deployment at five sites around the United States.

Candidates should have a PhD in Atmospheric Science, Chemistry, Environmental Engineering, or a related field. Candidates must have experience with data analysis and programming. Preferred qualifications include experience with aerosol measurements and micrometeorological analyses.

The position will be based at Colorado State University in Fort Collins, CO, though the position will include extensive field measurements. The candidate could start as soon as August 2022, but no later than Spring 2023.

Interested candidates are encouraged to send a CV and cover letter describing their experience and interest in the position to Dr. Farmer at delphine.farmer@colostate.edu.

January 27, 2022

2021 passed like a blur. Michael Link finished up his postdoc, and now has a position at NIST in Maryland - we successfully converted him to the dark side of indoor air, and he will be thinking about the intersection of buildings, energy, and chemistry. The entire group pitched in to make the Flux Closure Study in August/September of 2021 a roaring success and filled with fun collaborations with the Millet group (U of Minnesota) and the Stevens group (Indiana U). Sara Williams and Anne Mielnik finished up, and we wish them best of luck with their careers. Erin Boedicker and Lauren Garofalo successfully deployed particle flux measurements and aerosol composition measurements for two months in Utqiagvik, Alaska. 

We welcomed two new postdocs - Drs. Kathryn Mayer and Jienan Li will be thinking about the intersection of outdoor and indoor air pollution at the upcoming CASA experiment. We also welcome first year PhD student Katelyn Rediger to the group - she will take on the FIGAERO-CIMS, and thinking about urban emissions and air quality. And most recently, Dr. Rachele Ossola will be joining our group to think about the leaf-atmosphere interface. Welcome to you all!

May 12, 2021

So many things happened this semester that we didn't have time to post them all!

Anna Hodshire moved to a full-time position at Handix Scientific, while Jimmy Mattila successfully defended his PhD and is headed to a postdoc position at the U.S. E.P.A. in North Carolina - we wish both of them much success in their careers!

Air cleaning turns out to be quite contentious. The atmosphere continues to provide new insights on formic acid. Our lab is fully vaccinated and looks forward to more experiments and new field work. And congratulations to Erin Boedicker for receiving a scholarship in Air Quality from the Air and Waste Management Association!

February 4, 2021

And for something different, a few thoughts on decommissioning coal-fired power plants and air cleaners in schools.

January 4, 2021

Our indoor work is getting attention on NPR, The New York Times, and a few other media outlets. Our outdoor work is also getting attention - check out these stories in CSU's Source and the DOE ARM news site!

December 1-17, 2020

Erin, Mj, Anne, Lauren, and Delphine presented research at the Virtual 2020 AGU Fall Meeting. Additionally, Mj co-lead and organized a workshop on "How to Sketch Your Science," with over 1000 attendees. Hopefully, the quality of our TOC graphics and presentations will keep improving! 

November 17, 2020

Welcome Anne and Sara, our new PhD graduate students!

September 4, 2020

PNAS Front Matter has an article about how humans impact indoor air chemistry - including our HOMEChem work! 

August 6, 2020

We are looking for a postdoc interested in aerosol mass spectrometry and indoor chemistry field experiments. The position will include developing and running perturbation experiments as part of the CASA Study (Chemical Assessment of Surfaces and Air). Essential qualifications include a PhD with strong interest atmospheric and indoor chemistry. Preferred qualifications include demonstrable experience with aerosol or other atmospheric mass spectrometry instrumentation and data analysis in Igor or similar program, as well as an established publication record.

We anticipate the position starting in January 2021. Interested individuals are encouraged to send Delphine their CV and a letter of interest (including contact information for references) by September 15, 2020. The position will include benefits, has the potential to be renewed for up to three years, and may include additional opportunities to be involved in other field and laboratory experiments.

 July 29, 2020

It has been a busy and strange spring and summer. First off: Congratulations to Dr. Ryan Fulgham for successfully defending his PhD dissertation - we wish you all the best in your postdoc at the EPA in North Carolina! Congratulations to Danny Lee for completing his M.S. - we look forward to hearing about your travels home to South Korea and future career.

Secondly, the COVID19 pandemic has definitely thrust the importance of indoor aerosols into the forefront of the news. Delphine signed onto a formal letter indicating the importance of airborne transmission of SARS-CoV-2 through aerosol particles. Interview in local news.

Finally, our time spent in indoor environments under stay-at-home orders prompted an array of interest, including interviews in Scientific American, Grist, and GQ. This is the result of truly excellent work from Jimmy Mattila, Erin Boedicker, Andy Abeleira, Matson Pothier, Anna Hodshire - and the entire HOMEChem science team!

February 19, 2020

Congratulations to Mj Riches on being selected to AGU's Voices of Science program! Mj will be part of the media/communication stream, learning about science communication at a workshop in DC and then putting that knowledge to work in a series of outreach events over the next year. We can't wait to see your creativity flourish!

February 6, 2020

Jimmy Mattila's work on the chemistry of bleach cleaning is featured in this article from CSU's SOURCE.

November 24, 2019

Our HOMEChem work is featured on the front cover article of C&E News!

October 11, 2019

DOE runs a profile on Delphine and our group's work on black carbon and particle deposition!

July 2, 2019

Delphine and Ravi are funded by NSF to think about photochemistry of carbonyls and we are recruiting a postdoc! If you are interested in working with lasers, mass spectrometry, kinetics and/or photochemistry experiments, come join us! Please send a CV with names of at least two references and a letter describing your relevant experience and interests to Delphine and Ravi.

PhD students from either Chemistry or Atmospheric Sciences at Colorado State University are welcome to discuss opportunities on this project.

May 9, 2019

Congratulations to Jimmy Mattila for winning the Environmental Management or Policy Research and Study Related to Air Quality scholarship from the Air & Waste Management Association, Mj Riches AND Ryan Fulgham for winning Graduate Teaching Assistant Awards, and Erin Boedicker and Lauren Garofalo for being accepted into the DOE Aerosol Summer School organized by ARM and EMSL this summer! The Farmer group is awesome!

April 3, 2019

Our group's work in the HOMEChem study is featured in an article in the New Yorker and a podcast from The 1A.

March 30, 2019

Learn about Mj's research in her award-winning 3-minute thesis presentation. (Note: it cuts out early, but you get an idea of what drives her research!).

March 1, 2019

Congratulations to Mj Riches for winning 1st place in the poster competition at the CSU Front Range Student Ecology Symposium, an achievement considering she was presenting data collected in the last few weeks!

February 25, 2019

Congratulations to two of our students: Mj Riches for being selected as a Vice President for Research Graduate Student Fellow for the 2019-20 year (article here), and Julie Holder for having a piece of artwork selected for the CSU Science & Art Exhibition (stop by the Curfman Gallery at the Lory Student Center to see her work on display)!

January 2, 2019

It turns out that learning to fix GCs in the field, troubleshoot trace gas instruments, and write code for data analysis are marketable skills! After surviving 6.5 years as a PhD student and postdoc in the Farmer group, Dr. Andy Abeleira has decided to head to industry. We wish you all the best in your next career!

November 20, 2018

Congratulations to Mj Riches for winning one of the CNS Graduate Student Top Scholar Awards at the CSU Grad Student Showcase!

November 18, 2018

Thanks to the entire group and Prof. Nancy Levinger for nominating me for the Graduate Teaching and Mentoring award. It's a testament to your overall awesomeness, not mine. Thank you. DKF.

October 26, 2018

The Sloan Chemistry of Indoor Environments Meeting at CU-Boulder was a success - Erin, Jimmy, Matson and Andy all presented posters filled with HOMEChem data, Delphine gave a talk and Danny learned about the world of indoor chem!

September 7, 2018

It was a busy summer in the field for the Farmer group! Jimmy, Andy, Matson, Erin and Delphine spent just over five weeks in Austin TX eating tacos participating in the HOMEChem experiment, running a suite of trace gas and particle measurements. The work was funded by the Sloan Foundation and in collaboration with Dr. Marina Vance from CU and an array of collaborators from numerous universities. Then in July, Matson and Lauren headed to Boise ID to run CSU's High Res Aerosol Mass Spectrometer on NSF's C130 aircraft for the WE-CAN project. Delphine came out for a few weeks. Our group was funded by NOAA to think about near-field aerosol chemistry in collaboration with Dr. Sonia Kreidenweis (CSU). 

Everyone is back home in Fort Collins, recovering from field work and digging into their datasets, except for Delphine who has headed to the Netherlands for sabbatical...

February 9, 2018 

Congratulations to Trey Murschell for defending and receiving his PhD!

January 1, 2018 

Welcome Matson, Danny and Erin our new 1st year PhD students! 

October 20, 2017 

Congratulations to Andy Abeleira for defending and receiving his PhD! Andy will be staying in Fort Collins and be doing a postdoc with the Farmer lab.  

July 12, 2017

Congratulations to Trey Murschell for receiving the Rodney Skogerboe Scholarship in Chemistry! This scholarship aims to support graduate students in Analytical Chemistry at CSU, and Trey is the inaugural receipient. Rod Skogerboe was an analytical chemist at CSU with a particular interest in environmental chemistry, serving as a Science Advisor to the US Food and Drug Administration, and on the State Air Pollution Control Board.

June 8, 2017

Ethan Emerson is out at DOE's Southern Great Plains site setting up aerosol measurements for the Black Carbon Aerosol Deposition Study (BCADS). Delphine Farmer and co-PI Gavin McMeeking also came out to help...