Thorsten Bartels-Rausch
@thorbarra.bsky.social
π€ 13
π₯ 26
π 8
Science and other things. Small print: This expresses my personal view.
PhD Position in Atmospheric Physical Chemistry Keen to explore cutting-edge laboratory experiments and sharpen your experimental skills? Weβre looking for applications for a PhD position in physical chemistry of the atmosphere. +41 56 310 43 01 |
[email protected]
loading . . .
Dr. Thorsten Bartels-Rausch
https://www.psi.ch/en/lac/people/thorsten-bartels-rausch
10 days ago
0
0
0
reposted by
Thorsten Bartels-Rausch
CATCH Science
9 months ago
Day 2 of
@faradaydiscussions.rsc.org
on *Atmospheric Chemistry in Cold Environments* in full swing. Cool concept: Fresh & new publications are intensively discussed & comments/questions of the expert audience are published together with the final publication.
#CATCHscience
0
6
3
@faradaydiscussions.rsc.org
Here we are, opening the Faraday Discussion on Atmospheric Science in the Cold in London. π©πΌβπ»π¨π½βπ»π¨βπ¬π§π»βπ¬π©πΌβπ¬π¨πΌβπ§π§π»βπ§ππ₯³π§
9 months ago
0
4
1
Endlich wieder, Start der 60. Solothurner Filmtage mit dem Eismann
10 months ago
1
0
0
ERCA in Grenoble. Nice to be back and meet so many students from all over the world
10 months ago
0
0
0
www.solothurnerfilmtage.ch/de/
loading . . .
Solothurner Filmtage
https://www.solothurnerfilmtage.ch/de/
11 months ago
0
0
0
reposted by
Thorsten Bartels-Rausch
Science News
11 months ago
My opinion: Scientists should get paid for thinking time "Thinking time is often undervalued; it is rarely, if ever, quantified in employment practices."
www.nature.com/articles/d41...
3
70
15
reposted by
Thorsten Bartels-Rausch
Paul Zieger
11 months ago
Bioaerosols make it all the way up to the frozen North Pole, where they can impact clouds! π¦ π»ββοΈβοΈ Check out our new publication led by Julia Kojoj within a fantastic collaboration our H2020 project CRiceS π
b.tellusjournals.se/articles/10....
@Stockholm_Uni @AcesSthlmUni
0
4
1
Vienna, Iβm coming
add a skeleton here at some point
11 months ago
0
0
0
reposted by
Thorsten Bartels-Rausch
Zack Labe
11 months ago
π§΅ Our annual NOAA Arctic Report Card is available today for 2024. It discusses recent changes in the
#Arctic
, extreme events, and broader human/environmental impacts. βοΈπ§ͺπβοΈ + Report:
arctic.noaa.gov/report-card/...
+ Video:
www.youtube.com/watch?v=0yqG...
+ Summary:
arctic.noaa.gov/report-card/...
6
201
92
reposted by
Thorsten Bartels-Rausch
Markus Ammann
11 months ago
New publication out:
doi.org/10.1021/acse...
. Iodate Recycling. Great job, Mago and Lucia! Great collaboration with UC Boulder (Rainer Volkamer 's group)
loading . . .
Iodine Activation from Iodate Reduction in Aqueous Films via Photocatalyzed and Dark Reactions
Iodine in the atmosphere destroys ozone and can nucleate particles by formation of iodic acid, HIO3. Recent field observations suggest iodate recycles from particles sustaining significant gas-phase IO radical concentrations (0.06 pptv) in aged stratospheric air, and in elevated dust plumes. However, laboratory evidence for iodine activation from aerosols is currently missing. Here, a series of coated-wall flow tube (CWFT) experiments test for iodine release from thin aqueous films containing iodate. Photocatalyzed reactions were studied using iron(III) citrate (FeβCit), Arizona Test Dust (ATD), and Fe2O3, along with the dark reaction of iodate with H2O2 at 90% RH and 293 K. Fresh films were separately irradiated with visible and UV-A light, and the efficient release of molecular iodine, I2, was observed from all irradiated films containing photocatalysts. For films with FeβCit, visible light reduced larger amounts of iodate than UV-A light, activating βΌ40% of iodate as I2. The formation of oxygenated volatile organic compounds (OVOC) and iodinated OVOC was also observed. Dark exposure of films to H2O2 led to I2 release in smaller amounts than suggested by BrayβLiebhafsky kinetics, consistent with H2O2 salting-out in the films, or possibly other reasons. Photochemical activation is enhanced by dust proxies in the film, and by aging the film with H2O2 in the dark prior to irradiation. These findings help explain recent field observations of elevated IO radical concentrations in lofted dust layers, and warrant the inclusion of photocatalyzed iodate reduction in atmospheric models.
https://doi.org/10.1021/acsearthspacechem.4c00224
0
10
2
Saturday-night-family-movie-evening: The difference in how the same story is told could not be more extreme.
11 months ago
0
0
0
reposted by
Thorsten Bartels-Rausch
CATCH Science
11 months ago
π£ Upcoming CATCH seminar by Ursula Jongebloed (University of Washington, USA) on January 15th, 2025 at 8 PST (17 CET) on "Sulfate sources and chemistry from the pre-industrial to present day inferred from ice core observations and global model simulations". Zoom link on our website!
#CATCHscience
0
5
6
reposted by
Thorsten Bartels-Rausch
CATCH Science
12 months ago
Last week, the 1st planning workshop for the International Polar Year (IPY) 2032-33 took place at Aussois π«π· around the topic of chemical, biogeochemical & physical drivers of the polar atmosphere & climate. Exciting science plans developing!
0
2
2
you reached the end!!
feeds!
log in