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1 Introduction
Pages 8-14

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From page 8...
... 2  National Research Council, 2007, Earth Science and Applications from Space: National Imperatives for the Next Decade and Beyond, Washington, DC: The National Academies Press, https://doi.org/10.17226/11820. This report was preceded by an interim report, National Research Council, 2005, Earth Science and Applications from Space: Urgent Needs and Opportunities to Serve the Nation, Washington, DC: The National Academies Press, https://doi.org/10.17226/11281.
From page 9...
... 5  For brevity, the EV program element of the ESSP Program will be referred to in this report as the "EV program," "Earth Ventureclass," "Venture-class," or just "EV." EV mission categories are sometimes referred to as EV "strands." 6  Chapter 2, "Assessing Progress Toward the Decadal Vision," in National Research Council, 2012, Earth Science and Applications from Space: A Midterm Assessment of NASA's Implementation of the Decadal Survey, Washington, DC: The National Academies Press, https://doi.org/10.17226/13405. 7 The first EV call in 2009, which was directed to airborne science investigations, was denoted as EV-1.
From page 10...
... In turn, this informed NASA plans for strict adherence to cost caps to prevent a single mission overrun from jeopardizing mission cadence.11 Further information on NASA's vision for EV missions upon their establishment in 2009 is shown in Figure 1.1. 10  "In contrast with the PI-led ESSP missions, which are generally smaller and have highly focused scientific objectives, Earth Systematic Missions are designed to provide measurements and support for a wide range of NASA science foci, given programmatic and technical constraints." From the FY 2011 budget request for NASA, available at https://www.nasa.gov/pdf/432577main_Earth_­ Science_R1.pdf.
From page 11...
... , Instrument Developers, and Project Management Teams Mission PI Affiliation Spacecraft/Instrument Developer Project Management Team EVI-1 (TEMPO) Smithsonian Astrophysical Ball Aerospace and Technologies Langley Research Center Observatory Corporation EVM-1 (CYGNSS)
From page 12...
... Freilich, "Earth Science Division Strategic Issues," presentation to the Committee on Earth Studies on October 19, 2009. IMPLEMENTING THE EARTH VENTURE PROGRAM According to NASA, the programmatic objectives of the EV mission12 portfolio are to implement missions that will • Advance scientific knowledge of Earth science processes and systems; • Add scientific data and other knowledge-based products to data archives for all to access; • Result in scientific progress and results published in the peer-reviewed literature to encourage, to the maximum extent possible, the fullest commercial use of the knowledge gained; • Develop information products, demonstrate relevant applications, and provide data to key applica tions communities to enhance the overall benefits of a mission; • Provide opportunities to expand the pool of well-qualified PIs and project managers (PMs)
From page 13...
... EARTH VENTURE PROGRAM FOUNDATIONAL PRINCIPLES The characteristics that define EV missions have remained largely unchanged since their inception and now comprise what one NASA official refers to as the program element's "foundational principles," which are as follows:18 • Science-driven, • Competitively selected, • Investigations are cost constrained, • Investigations are schedule-constrained, and • PI-led. 13  NASA, 2019, "Earth Venture Instrument-5 (EVI-5)
From page 14...
... The second decadal survey in ESAS was completed in late 2017 and published in 2018.22 In its report, the survey committee, like the midterm assessment committee, found that the EV program appeared to be working well overall, "serving its intended purpose of restoring more frequent launch opportunities and facilitating the demonstration of innovative ideas and higher-risk technologies." The report also noted that the "current three-strand Venture-class program responds directly to the Earth science and space applications decadal survey (ESAS 2007) recommendation, which suggested that the program include "stand-alone missions … more complex instrument of opportunity … or complex sets of instruments flown on suitable suborbital platforms to address focused sets of science questions." In summary, both the midterm assessment of the 2007 decadal survey and decadal survey itself wrote approvingly of the initiation of EV missions; indeed, going so far as recommend consideration of increased cadence for the EV-M standalone space missions and recommending the initiation of a fourth strand of EV missions to provide opportunity for low-cost sustained observations.23 19  National Research Council, 2012, Earth Science and Applications from Space: A Midterm Assessment of NASA's Implementation of the Decadal Survey, Washington, DC: The National Academies Press, https://doi.org/10.17226/13405.


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