NSF award 2503685 · University of California-Santa Barbara

Collaborative Research: Impacts of Hydrogen Sulfide Emitted from Volcanic Passive Degassing on Atmospheric Chemistry

Final report due

29 December 2028

in 803 days · The award ends on 31 August 2028.

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award ending 2028-08-31 · Research.gov
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Extension request17 Jul 2028in 638 days
award ending 2028-08-31 · Research.gov
PAPPG 24-1: “at least 45 days prior to the end date”
No-cost extension notice21 Aug 2028in 673 days
award ending 2028-08-31 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due29 Dec 2028in 803 days
award ending 2028-08-31 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due29 Dec 2028in 803 days
award ending 2028-08-31 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out29 Dec 2028in 803 days
award ending 2028-08-31 · Research.gov
PAPPG 24-1: “financially closed out 120 days after their expiration date”

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NSF lists this award's end date as 31 August 2028.
NSF rules say the final report is due no later than 120 days after that.
So the final report is due by 29 December 2028.

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Award card

Award number: 2503685
Period of support: 1 Sep 2025 – 31 Aug 2028
Amount: $267,943
Awardee: University of California-Santa Barbara, Santa Barbara, CA
Program: Atmospheric Chemistry
Directorate: GEO

Abstract

This project will support the development of the first global emissions inventory for volcanic hydrogen sulfide (H2S). By improving estimates of natural sulfur emissions to the atmosphere, the uncertainty in the estimates of the global radiative forcing of anthropogenic sulfate aerosols will be reduced. The investigators of the project plan to: (1) make an initial inventory of global volcanic H2S emissions based on…

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