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EVC-1 Acquisition Homepage

Earth Venture Continuity-1 (EVC-1)

EVC-1 Selection News: NASA Selects New Instrument to Continue Key Climate Record

NASA has announced the investigation selected as a result of the Earth Venture Continuity-1 solicitation. NASA Press Release 20-020, Feb. 26, 2020


February 13, 2019
SALMON-3 AO Amendment 13: EVC-1 New Dates for the Pre-Proposal Conference, Mandatory Notice of Intent NOI and Proposal Submissions

SALMON-3 AO Amendment 13: New Dates for the Pre-Proposal Conference, Mandatory Notice of Intent NOI and Proposal Submissions for Program Element Appendix (PEA) N: Earth Venture Continuity (EVC)-1

With this amendment released on or about February 12, 2019, the National Aeronautics and Space Administration (NASA) Science Mission Directorate (SMD) Announcement of Opportunity (AO) NNH17ZDA004O, "Third Stand Alone Missions of Opportunity Notice (SALMON-3)" amends PEA N: Earth Venture Continuity (EVC)-1 as follows:

  1. The Pre-Proposal Web conference set to TBD by Amendment 12 is scheduled for February 28, 2019.
  2. Changes the date for mandatory Notices of Intent (NOI) submissions originally due on March 29, 2019 to April 26, 2019, 11:59 PM Eastern.
  3. Changes the last date for emailing/submitting questions from May 10, 2019 to July 12, 2019, 11:59 PM Eastern.
  4. Changes the electronic proposal due date via NSPIRES from May 24, 2019 to July 26, 2019, 11:59 PM Eastern.
  5. Changes the due date for receipt of proposal CD-ROMs from May 29, 2019 to July 31, 2019 4:30 PM Eastern.

Further lapses in U.S. Government/NASA funding, however, may impact these new and any unchanged EVC-1 program dates and adjustments via future amendments may be necessary. In the event of future lapses to the NASA operations, proposers should visit NSPIRES, the official NASA source for the full EVC-1 program element appendix. Reminder: this email is not a complete or verbatim summary of the EVC-1 program element appendix or its amendments. The full EVC-1 text is available at by searching on NNH17ZDA004O-EVC1.

Questions may be addressed to Dr. David Considine, Earth Venture Continuity - 1 Program Scientist at (subject line to read 2019 EVC-1).

Responses to all inquiries will be posted in the EVC-1 Acquisition Homepage at: Anonymity of those who submit questions will be preserved.

Earth Venture Continuity Overview
Earth Venture Continuity (EVC) is a new type of solicitation that was recommended in the 2017 Decadal Survey report, "Thriving on Our Changing Planet: A Decadal Strategy for Earth Observation from Space" The National Academies Press, National Academies of Sciences, Engineering, and Medicine, Washington, DC (2018). By promoting innovative, capable approaches to acquiring existing measurement sets at lower cost, EVC investigations are intended to help mitigate the budgetary and strategic portfolio-wide tensions the Agency faces when balancing funding for missions that provide continuity of existing data with missions that demonstrate new types of measurements or measurements of new Earth system variables. The EVC strand of the EV element specifically seeks proposals to lower the cost for long-term acquisition of key "continuity" observations, and rewards innovation in cost reduction achieved through technology infusion, programmatic efficiency, and/or other means. The ESD will use EVC to demonstrate techniques/approaches for making long-term measurements with the appropriate characteristics to maintain the measurement continuity of the identified observations.
The desired characteristics of a selected EVC observing system include:
• measurements that will maintain and extend existing climate data records;
• affordable missions enabled by innovations in design or process;
• enhanced producibility and lowered costs of future copies;
• design features that facilitate on-orbit accommodations; and
• design features that enable technology infusion in potential future copies.