FINAL TEXT- 2023 Earth System Explorers (ESE) Announcement of Opportunity (AO)

The purpose of this amendment is to amend the SAM.gov notice NNH23ZDA016O to announce that the 2023 Earth System Explorers (ESE) AO has added an Amendment 1 Document. Open and carefully read the attahed updated summary PDF file entitled “NNH23ZDA016OSummary2.pdf . On or after the publication date of this SAM.gov notice, the final full text for the 2023 Earth System Explorers (ESE) Announcement of Opportunity (AO) will be available for download from the NASA Solicitation and Proposal Integrated Review and Evaluation System (NSPIRES) at https://nspires.nasaprs.com , click on the word “Solicitations” at the top of the NSPIRES landing page and then on the next page enter the number “NNH23ZDA016O” in the search box or use the direct URL provided below. It is necessary to download or open and carefully read the attached summary PDF file entitled “NNH23ZDA016OSummary” for other important dates, i.e., Mandatory Notice of Intent to Propose, Pre-Proposal Conference, etc., that are prior to the listed Date Offers Due. The attached PDF file is a copy of an email to be sent via NSPIRES to Science Mission Directorate List Serv subscribers. After reading the full ESE AO on NSPIRES, please address any comments and questions only via email to both the listed primary and secondary points of contact and use "ESE 2023 AO” in the subject line. This SAM.gov notice is not a complete or verbatim summary of the AO.