2026-10-14T07:00:38Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34018737 2026-09-29T00:08:55Z category_915 category_13 category_24 category_272 category_873 category_39 category_69 portal_63 item_type_6 month_year_09_2026

Constraints on the Loss of Hydroperoxymethyl Thioformate (HPMTF) to Marine Clouds Using Aircraft Observations Christopher M. Jernigan (9369046) Gordon A. Novak (1360491) Siyuan Wang (147000) Michael A. Robinson (684573) Adam Ahern (25133538) Osinachi Ajoku (25133541) Katherine Ball (21595406) Timothy H. Bertram (1360488) Kelvin H. Bates (1541215) Birger Bohn (2106883) Charles A. Brock (2101738) Wyndom S. Chace (14352350) Matthew Coggon (4492018) Maximilian Dollner (25133544) Michelle Färber (19321745) Zachary Finewax (4819884) Hendrik Fuchs (1891519) Georgios I. Gkatzelis (7307975) Han Huynh (17252724) Jan Kazil (25133547) Ming Lyu (4767735) Anna Novelli (7307981) Jeff Peischl (1482850) Andrew Rollins (9311153) Nell B. Schafer (21595409) Aaron Stainsby (21595415) Chelsea E. Stockwell (9192616) Patrick R. Veres (1496893) Carsten Warneke (3744747) Eleanor Waxman (6040730) Bernadett Weinzierl (19745995) Kevin Wokosin (25133550) Lu Xu (386491) Kristen Zuraski (3211554) Steven S. Brown (1340094) Physical Sciences not elsewhere classified Genetics Evolutionary Biology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Ecology Inorganic Chemistry competition likely impacts cloud condensation nuclei marine boundary layer irreversible loss path 4 – 2 2 </ sub 9 – 1 cloud droplets marine environment marine atmosphere × 10 state approximation stable intermediate soluble molecules sequestering sulfur results suggest relevant species recent work reactive uptake photochemical oxidation organic acids ocs ). multiphase processes hydroxyl radical hydroperoxymethyl thioformate greatly reducing globally ubiquitous g ., efficiently lost dimethyl sulfide The photochemical oxidation of dimethyl sulfide (DMS) by the hydroxyl radical (OH) contributes to the production and growth of particles and cloud condensation nuclei in the marine boundary layer (MBL). DMS oxidized by OH can go on to form a stable intermediate, hydroperoxymethyl thioformate (HPMTF), which is both globally ubiquitous and efficiently lost to multiphase processes in the marine atmosphere. Recent work has shown that clouds act as a significant and irreversible loss path for HPMTF, sequestering sulfur and greatly reducing the production of long-lived, climate-relevant species (e.g., SO2 and OCS). Until recently, there have been few observational constraints on the role of clouds in the spatiotemporal distribution of HPMTF and other soluble molecules in the MBL. Using a steady-state approximation, we determine a reactive uptake and first-order aqueous loss rate constant of HPMTF to cloud droplets of 1.2 (0.9–1.9) × 10–2 and 1.4 (0.4–2.2) × 10–1 s–1, respectively. The results suggest that hydrolysis and ozonolysis are significant within cloud droplets, and their competition likely impacts the distribution of sulfate and organic acids in the marine environment. 2026-09-28T00:00:00Z Text Journal contribution 10.1021/acsestair.6c00199.s001 https://figshare.com/articles/journal_contribution/Constraints_on_the_Loss_of_Hydroperoxymethyl_Thioformate_HPMTF_to_Marine_Clouds_Using_Aircraft_Observations/34018737 CC BY-NC 4.0