NSF award 2446505 · University of Minnesota Duluth

Collaborative Research: Quantifying and predicting wind-driven internal-wave shear in the ocean

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: 2446505
Period of support: 1 Sep 2025 – 31 Aug 2028
Amount: $215,143
Awardee: University of Minnesota Duluth, Duluth, MN
Program: PHYSICAL OCEANOGRAPHY
Directorate: GEO

Abstract

Wind blowing over the ocean resonantly generates near-inertial waves (NIWs) which dominate the ocean kinetic-energy and vertical-shear spectra at frequencies above 0.2 cycles/day. Once generated, long-wavelength (low-mode) NIWs propagate long distances toward the equator before meeting an unknown fate, while short-wavelength (high-mode) NIWs persist for weeks under the storm track, maintaining ubiquitous upper-ocean…

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