The National Academies Press

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1 Introduction
Pages 8-10

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From page 8... ... � Facility-class missions and instruments at the dedicated measurement level provide platforms focused on a single measurement set with previously identified value to generate long-duration, accurate data useful for focused scientific investigations and modeling studies; recent examples include Landsat-7, TOPEX/Poseidon, QuikSCAT, TRMM, TOMS, and SAGE. � Exploratory missions provide platforms intended to investigate new processes or phenomena or to evaluate innovative measurement approaches; recent examples include GRACE, CALIPSO, CloudSat, and Triana.2 ESE 1The 2001 ESE strategic plan, Exploring Our Home Planet: Earth Science Enterprise Strategic Plan, can be found at . Read the entire page →
From page 9... ... � Data purchase agreements provide an alternative means of obtaining Earth science data when the data are available from the private sector as commercial products; the best recent example is NASA's purchase of SeaWiFS data from the private SeaStar mission.3 In data purchase agreements, ESE coordinates data product quality (including formats, accuracy, and overall coverage and usage timelines) with private-sector suppliers based on requirements and assessments provided by NASA-appointed science panels. Read the entire page →
From page 10... ... Several missions has been successfully launched, others are proceeding well toward near-term launch dates, and a few have suffered significant cost and schedule growth, resulting in long delays and ESE-mandated changes in management and/or flight status. These diverse experiences led NASA to ask the Committee on Earth Studies to examine the challenges associated with Earth Explorer missions led by academic PIs, and to evaluate a series of evolutionary programmatic changes in the Earth Explorers Program that have been made by ESE over the last 7 years (see the statement of task, Appendix A) Read the entire page →

From page 8...

... � Facility-class missions and instruments at the dedicated measurement level provide platforms focused on a single measurement set with previously identified value to generate long-duration, accurate data useful for focused scientific investigations and modeling studies; recent examples include Landsat-7, TOPEX/Poseidon, QuikSCAT, TRMM, TOMS, and SAGE. � Exploratory missions provide platforms intended to investigate new processes or phenomena or to evaluate innovative measurement approaches; recent examples include GRACE, CALIPSO, CloudSat, and Triana.2 ESE 1The 2001 ESE strategic plan, Exploring Our Home Planet: Earth Science Enterprise Strategic Plan, can be found at .

Read the entire page →

From page 9...

... � Data purchase agreements provide an alternative means of obtaining Earth science data when the data are available from the private sector as commercial products; the best recent example is NASA's purchase of SeaWiFS data from the private SeaStar mission.3 In data purchase agreements, ESE coordinates data product quality (including formats, accuracy, and overall coverage and usage timelines) with private-sector suppliers based on requirements and assessments provided by NASA-appointed science panels.

Read the entire page →

From page 10...

... Several missions has been successfully launched, others are proceeding well toward near-term launch dates, and a few have suffered significant cost and schedule growth, resulting in long delays and ESE-mandated changes in management and/or flight status. These diverse experiences led NASA to ask the Committee on Earth Studies to examine the challenges associated with Earth Explorer missions led by academic PIs, and to evaluate a series of evolutionary programmatic changes in the Earth Explorers Program that have been made by ESE over the last 7 years (see the statement of task, Appendix A)

Read the entire page →

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1 Introduction Pages 8-10

1 Introduction
Pages 8-10