NSF award 2516265 · University of Arizona

The Future of the Atmospheric Hydrogen Soil Sink

Final report due

29 December 2028

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

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Decide about an extension3 May 2028in 563 days
award ending 2028-08-31 · Research.gov
This one is ours, not NSF’s.
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: 2516265
Period of support: 1 Sep 2025 – 31 Aug 2028
Amount: $1,720,000
Awardee: University of Arizona, Tucson, AZ
Program: Atmospheric Chemistry, Ecosystem Science
Directorate: GEO

Abstract

This project aims to improve understanding of the removal of atmospheric hydrogen due to microbe-mediated soil uptake. The central question addressed by the project is whether microbial adaptation to elevated hydrogen is sufficient to mitigate leaks from the hydrogen energy sector. Soil uptake is currently the largest source of uncertainty in the budget, lifetime, and distribution of hydrogen. The project evaluates…

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