63 Photos and videos
Doug Day retweeted
31 Jul 2024
Since 2021, CIRES researchers have helped lead a new air quality monitoring program, which includes 12 sites across the U.S. They set up a suite of instruments that collect high-resolution air samples day and night. Read more: cires.colorado.edu/news/roof…
@JgrpBoulder @dougchem
ALT White text over blue background: CIRES News. Rooftop science: Surveying Denver's air. CIRES researchers take part in national project to identify sources of pollution. Graphic on right: City buildings sit under smoggy sky.
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Doug Day retweeted
25 Oct 2023
Our big smoke volatility paper is out! We flew a thermal denuder and showed good agreement with lab VBS. This closes much of the gap in the OA/CO differences between airborne and ground studies
pubs.acs.org/doi/10.1021/acs…
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Doug Day retweeted
3 May 2024
CIRES' Guy Symonds, Doug Day, and Pedro Campuzano recently traveled overseas to support the NASA-led Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ) mission. @JgrpBoulder @CUBoulder
Learn more about ASIA-AQ: espo.nasa.gov/asia-aq
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Doug Day retweeted
2 Apr 2024
For the past 2 months, we have been participating in the ASIA-AQ @NASAAirborne mission espo.nasa.gov/asia-aq/conten…
to study AQ in Asia (Philippines, Korea, Taiwan, Thailand) with a focus on urban and biomass burning pollution.
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Doug Day retweeted
4 Jan 2024
A new preprint from our group ona method for calibrating AMS and EESI for complex mixtures (e.g. chamber secondary aerosol) by first separating the compounds with HPLC
Work led by @MindySchueneman, with @DougChem @Pedro_CUBoulder @SeonsikY @DKim_Chem @jljcolorado et al
4 Jan 2024
Discussion open for comments: A multi-instrumental approach for calibrating two real-time mass spectrometers using high performance liquid chromatography and positive matrix factorization doi.org/10.5194/ar-2023-21
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Doug Day retweeted
6 Oct 2023
Come learn about our work on sources of SOA vs volatility classes in LA using a novel tubing OFR technique!
Melissa Morris presents this work at #aaar2023, @AmericanAerosol Annual Meet tomorrow at 10:30am in Portland. Session "Aerosol Chem X: Gas-phase SOA Precursors" (ballroom)
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Doug Day retweeted
6 Oct 2023
Come learn about our work on quantification of anthropogenic and pyrogenic particulate bromine by AMS!
@DKim_Chem presents this work at #aaar2023, @AmericanAerosol Annual Meeting tomorrow 9:45am in Portland. Session: "12RA Remote and Regional Atmospheric Aerosols III" (Rm F150)
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Doug Day retweeted
6 Oct 2023
@jljcolorado presents work on the health impacts of GUV222-generated pollution under low ventilation, showing that it may be its most important limitation at #aaar2023, @AmericanAerosol Annual Meeting in Portland, OR.
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Looking forward to sharing a few highlights on this work today at 10am at #AAAR2023
Work together with @jljcolorado @Pedro_CUBoulder @Benjamin_AtmChm and Donna Sueper (@ciresnews @cuboulder)
3 Oct 2023
Come learn about our work on methods and software to quantify organic nitrates using AMS!
@DougChem will present this work at #aaar2023, @AmericanAerosol Annual Meeting tomorrow @ 10:00am in Portland in session: "1IM Instrumentation & Methods I: Chemical Instrumentation" Rm F150
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Doug Day retweeted
5 Jun 2023
1/ We just installed an (outdoor) volatile organic compound (VOC) real time instrument at the Denver site of @NSF @ASCENT_USA measurement network
We are very grateful to @tofwerk, who's lending it to us for a month & to @CDPHE who is our host
Here w/ the ASCENT instruments
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Virtual Special Issue “Advances in Atmospheric Chemical and Physical Processes” Edited by J. Burkholder J. Orlando out in @JPhysChem A.
Many insightful papers on chem kinetics, rxn mechs, hetero/interface proc, aqueous chem, aerosol proc, theoretical.
pubs.acs.org/doi/10.1021/acs…
1/ Happy to share that our paper on yields & composition for monoterpenes NO3 radical and RO2 fate is published.
TLDR for general public: trees emit monoterpenes (a reason forests smell good). Those react with oxidants and make particle pollution (haze)
pubs.acs.org/doi/10.1021/acs…
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Doug Day retweeted
5 Dec 2022
At the @AF_Academy Subsonic Wind Tunnel, testing the internal flow field of the @NCAR_Science HIMIL aircraft inlet.
(As a function of air speed, pitch, roll)
Led by @Pedro_CUBoulder & @DKim_Chem, w/ support from @jljcolorado, in collaboration w/ Volkamer group
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Doug Day retweeted
2 Dec 2022
Covid is airborne and other diseases are too
News segment from KSL last night featuring our work @WeberStateU
2 Dec 2022
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1/ Happy to share that our paper on yields & composition for monoterpenes NO3 radical and RO2 fate is published.
TLDR for general public: trees emit monoterpenes (a reason forests smell good). Those react with oxidants and make particle pollution (haze)
pubs.acs.org/doi/10.1021/acs…
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39/ @julianefry & @DougChem led the work with many contributions from coauthors including @jljcolorado @jkrechmer @Pedro_CUBoulder @StevenSLBrown @MarlaDevault
@JgrpBoulder Paul Ziemann Group (& several others not on Twitter)
Appearing in @ACSPublications @JPhysChem
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40/ with support from @NOAAResearch AC4 Program @EPAresearch @NSF @NOAA_ESRL @cuboulder @Reed_College_ @CIRESnews @CUBoulderCHEM #AtmosChem