NASA Draft Earth Venture Continuity 1 (EVC-1) PEA Released

Status Report From: NASA Science Mission Directorate
Posted: Wednesday, November 21, 2018

NASA Announcement: Release of the DRAFT Earth Venture Continuity-1 (EVC-1) Program Element Appendix (PEA) to the Third Stand Alone Missions of Opportunity Notice (SALMON-3) for Community Comments


The National Aeronautics and Space Administration (NASA) has released a draft of the Earth Venture Continuity 1 (EVC-1) Program Element Appendix (PEA) to the Third Stand Alone Missions of Opportunity Notice (SALMON-3) Announcement of Opportunity (AO) for community comments (NNH19ZDA007J). The full text of the draft solicitation is available on NSPIRES (


SALMON-3 is an omnibus NASA AO which provides a solicitation and procurement base for modest investigations, also referred to as Missions of Opportunity (MO), requiring space flight that advance the high priority science, exploration, and technology objectives of NASA's Science Mission Directorate, Human Exploration and Operations Mission Directorate, and the Space Technology Mission Directorate. EVC-1 will solicit proposals for cost-capped activities resulting in the design, implementation, on-orbit characterization and scientific exploitation of observations from a capable observing system, to enable the retrieval of  top of the atmosphere short wave, long wave, and total radiative fluxes. Measured top of the atmosphere radiances and any necessary algorithms will be used by NASA to seamlessly extend and continue the Earth Radiation Budget (ERB) Climate Data Records. Other outputs are expected to include scientific investigations by the PI team to advance the understanding of radiances, radiative fluxes, and the ERB.  More information will be made available in the EVC-1 Library at


EVC-1 is part of the Earth Venture (EV) portfolio under the Earth System Science Pathfinder (ESSP) Program and will be the first solicitation in the EVC series. The EV portfolio consists of regularly solicited, competitively selected, cost and schedule constrained Earth science investigations as recommended in the 2017 Decadal Survey report. The PI-Managed portion of the Mission Cost Cap for EVC-1 is $150M in FY2019 dollars and NASA plans to complete the selection using a single-step process.


Participation will be open to all categories of organizations (U.S. and non-U.S.), including educational institutions, industry, not-for-profit organizations, Federally Funded Research and Development Centers, NASA Centers, the Jet Propulsion Laboratory, and other Government agencies.


The comment period for the Draft EVC-1 SALMON-3 PEA ends on December 7, 2018. Comments on the draft (subject line to read "EVC-1 Draft AO") should be addressed by email to Dr. David Considine, (


Responses to all inquiries will be answered by email and anonymized versions posted weekly at the PEA Questions and Answers (Q&A) section of the EVC-1 Acquisition Homepage (


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