NASA announces A.17 Hydrosphere research opportunity with 2026-27 proposal dates
NASA announces A.17 Hydrosphere as a new ROSES-2025 opportunity covering research on Earth’s water across ocean physics, terrestrial hydrology and precipitation science. NASA publishes 8 October 2026 for Step 1 and 28 January 2027 for Step 2, while key application requirements remain outside the supplied announcement. [1]
NASA Science has announced A.17 Hydrosphere, a new ROSES-2025 research opportunity focused on the physics of Earth’s water across oceans, land and the atmosphere. NASA lists 8 October 2026 for Step-1 proposals and 28 January 2027 for Step-2 proposals. [1]
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Research element released in ROSES-2025 Amendment 72
NASA announces A.17 Hydrosphere as a new opportunity.Step-1 proposal date published by NASA
The announcement gives a date but no deadline time or time zone.Step-2 proposal date published by NASA
The announcement gives a date but no deadline time or time zone.Potential-proposer briefing
NASA says the session is scheduled for 2-3 PM Eastern Time, with connection information to follow on NSPIRES.Dates and briefing details are as recorded in NASA’s announcement. [1]
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What the opportunity covers
NASA says the element seeks research that advances understanding of how water is distributed, moves and changes across the Earth system. Its announcement frames this as research spanning the ocean, land and atmosphere. The agency also says the work relates to its investments in the Fate of River Export and Surface Hydrology field campaign, the NISAR mission and data acquired through the Commercial Satellite Data Acquisition program. These are NASA’s stated priorities, rather than evidence of outcomes from the new opportunity.
- Ocean physics, terrestrial hydrology and precipitation science are the three disciplines NASA identifies within the element.
- NASA specifically identifies measurements of ocean salinity, snow depth and precipitation from commercial satellites as targeted topics.
- A fourth subelement is intended to extend these topics to other Earth-science disciplines.
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Dates and briefing
NASA says briefing connection information will be posted under “other documents” on the program element’s NSPIRES page. The acquired announcement does not provide that page, the connection details, or the authoritative time zone and time of either proposal deadline.
- Step 1: 8 October 2026.
- Step 2: 28 January 2027.
- Potential-proposer briefing: Monday, 14 September 2026, 2-3 PM Eastern Time.
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Why this matters and what remains unknown
For researchers considering Earth-water science proposals, the announcement provides an initial scope statement and a two-stage calendar. It does not establish who may apply or how proposals will be evaluated, funded or submitted. Readers should use the NASA announcement as the primary source and obtain the associated NSPIRES materials before making application decisions.
- Primary source: NASA Science, “Amendment 72: New Opportunity: A.17 Hydrosphere.”
- Source link: https://science.nasa.gov/researchers/solicitations/roses-2025/amendment-72-new-opportunity-a-17-hydrosphere
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What interested researchers can do
NASA’s announcement is a preliminary source for assessing topic fit; the supplied record does not include the NSPIRES participation page or full solicitation requirements. [1]
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Review the A.17 Hydrosphere announcement and compare a proposed project with its stated ocean physics, terrestrial hydrology, or precipitation-science scope. [1]
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Plan around NASA’s published two-step schedule: Step 1 on 8 October 2026 and Step 2 on 28 January 2027. Confirm deadline times, time zone, eligibility, and submission rules in the authoritative application materials before acting. [1]
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NASA records a potential-proposer briefing for 14 September 2026, 2-3 PM Eastern Time; it says connection details will be posted in “other documents” on the element’s NSPIRES page. [1]
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Limits of this edition
This is based on a single first-party NASA announcement, not independent reporting. [1]
The supplied evidence does not include the NSPIRES participation page, full solicitation text, eligibility rules, budget provisions, submission procedure, required documents, or deadline times and time zones. [1]
The opportunity’s continued availability and whether the listed dates remain current were not independently rechecked. [1]
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