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'''Plankton, Aerosol, Cloud, ocean Ecosystem''' ('''PACE''') is a [[NASA]] [[Earth observation satellite|Earth-observing satellite]] mission that will continue and advance observations of global ocean color, [[biogeochemistry]], and [[ecology]], as well as the [[carbon cycle]], [[Aerosol|aerosols]] and [[Cloud|clouds]].<ref name="Ocean Sciences">{{cite web|url=https://pace.oceansciences.org/home.htm|title=PACE |publisher=NASA|access-date=15 March 2021}} {{PD-notice}}</ref> PACE will be used to identify the extent and duration of [[phytoplankton]] [[Algal bloom|blooms]] and improve understanding of air quality.<ref name="IOCCG">{{cite web|url=http://ioccg.org/2017/05/may-2017/|title=IOCCG News February 2021|publisher=IOCCG|date=February 2021|access-date=15 March 2015}}</ref> These and other uses of PACE data will benefit the economy and society, especially sectors that rely on [[water quality]], [[Fishery|fisheries]] and [[food security]].<ref name="NASA Administrator priorities">{{cite web|last=Foust|first=Jeff |url=https://spacenews.com/bridenstine-offers-senators-reassurances-on-nasa-programs/|title=Bridenstine offers senators reassurances on NASA programs|publisher=SpaceNews|date=24 May 2018|access-date=15 March 2021}}</ref>

'''Plankton, Aerosol, Cloud, ocean Ecosystem''' ('''PACE''') is a [[NASA]] [[Earth observation satellite|Earth-observing satellite]] mission that will continue and advance observations of global ocean color, [[biogeochemistry]], and [[ecology]], as well as the [[carbon cycle]], [[Aerosol|aerosols]] and [[Cloud|clouds]].<ref name="Ocean Sciences">{{cite web|url=https://pace.oceansciences.org/home.htm|title=PACE |publisher=NASA|access-date=15 March 2021}} {{PD-notice}}</ref> PACE will be used to identify the extent and duration of [[phytoplankton]] [[Algal bloom|blooms]] and improve understanding of air quality.<ref name="IOCCG">{{cite web|url=http://ioccg.org/2017/05/may-2017/|title=IOCCG News February 2021|publisher=IOCCG|date=February 2021|access-date=15 March 2015}}</ref> These and other uses of PACE data will benefit the economy and society, especially sectors that rely on [[water quality]], [[Fishery|fisheries]] and [[food security]].<ref name="NASA Administrator priorities">{{cite web|last=Foust|first=Jeff |url=https://spacenews.com/bridenstine-offers-senators-reassurances-on-nasa-programs/|title=Bridenstine offers senators reassurances on NASA programs|publisher=SpaceNews|date=24 May 2018|access-date=15 March 2021}}</ref>



After being proposed for cancellation under President Trump's FY 2018 budget, it was restored by Congress.<ref name="PACE restored">{{cite web|last=Foust|first=Jeff |url=https://spacenews.com/nasa-receives-20-7-billion-in-omnibus-appropriations-bill/|title=NASA receives US$20.7 billion in omnibus appropriations bill|publisher=SpaceNews|date=22 March 2018|access-date=15 March 2021}}</ref> The PACE project is managed by NASA [[Goddard Space Flight Center]].<ref name="Goddard">{{cite web|url=https://www.nasa.gov/press/2015/march/new-nasa-mission-to-study-ocean-color-airborne-particles-and-clouds|title=New NASA Mission to Study Ocean Color, Airborne Particles and Clouds|date=13 March 2015|access-date=15 March 2021}} {{PD-notice}}</ref> The main instrument and bus were designed and built at Goddard Space Flight Center.<ref name="NASA20160720">{{cite web|url=https://www.nasa.gov/feature/goddard/2016/pace-will-uncover-new-information-about-ocean-health|title=NASA's PACE Mission Will Uncover New Information About Health of Our Oceans|publisher=NASA|date=20 July 2016|access-date=15 March 2021}} {{PD-notice}}</ref>

After being proposed for cancellation under President Trump's FY 2018 budget, it was restored by Congress.<ref name="PACE restored">{{cite web|last=Foust|first=Jeff |url=https://spacenews.com/nasa-receives-20-7-billion-in-omnibus-appropriations-bill/|title=NASA receives US$20.7 billion in omnibus appropriations bill|publisher=SpaceNews|date=22 March 2018|access-date=15 March 2021}}</ref> The PACE project is managed by NASA [[Goddard Space Flight Center]].<ref name="Goddard">{{cite web|url=https://www.nasa.gov/press/2015/march/new-nasa-mission-to-study-ocean-color-airborne-particles-and-clouds|title=New NASA Mission to Study Ocean Color, Airborne Particles and Clouds|date=13 March 2015|access-date=15 March 2021}} {{PD-notice}}</ref> The main instrument and bus was designed and built at Goddard Space Flight Center.<ref name="NASA20160720">{{cite web|url=https://www.nasa.gov/feature/goddard/2016/pace-will-uncover-new-information-about-ocean-health|title=NASA's PACE Mission Will Uncover New Information About Health of Our Oceans|publisher=NASA|date=20 July 2016|access-date=15 March 2021}} {{PD-notice}}</ref>



On 4 February 2020, NASA announced the selection of [[SpaceX]] to launch PACE on a [[Falcon 9]], at a total cost to NASA of US$80.4 million, including the launch service and other mission-related costs.<ref name="SFN20200205">{{cite web|url=https://spaceflightnow.com/2020/02/05/spacex-wins-contract-to-launch-nasas-pace-earth-science-mission/|title=SpaceX wins contract to launch NASA's PACE Earth science mission|last=Clark|first=Stephen|publisher=Spaceflight Now|date=5 February 2020|access-date=15 March 2021}}</ref> The total cost of the mission is $964 million, which includes spacecraft construction, launch, and operations.<ref name=ars/> PACE successfully launched on 8 February 2024 at 06:33 UTC.<ref name="nasa-20231211">{{cite press release |url=https://www.nasa.gov/news-release/nasa-invites-media-to-launch-of-new-mission-to-study-oceans-clouds/ |title=NASA Invites Media to Launch of New Mission to Study Oceans, Clouds |work=[[NASA]] |date=11 December 2023 |access-date=11 December 2023}}</ref> On 17 April 2024 it was announced that first operational data was received.<ref>{{Cite web |date=2024-04-17 |title=NASA’s Near Space Network Enables PACE Climate Mission to ‘Phone Home’ - NASA |url=https://www.nasa.gov/technology/space-comms/nasas-near-space-network-enables-pace-climate-mission-to-phone-home/ |access-date=2024-04-18 |language=en-US}}</ref>

On 4 February 2020, NASA announced the selection of [[SpaceX]] to launch PACE on a [[Falcon 9]], at a total cost to NASA of US$80.4 million, including the launch service and other mission-related costs.<ref name="SFN20200205">{{cite web|url=https://spaceflightnow.com/2020/02/05/spacex-wins-contract-to-launch-nasas-pace-earth-science-mission/|title=SpaceX wins contract to launch NASA's PACE Earth science mission|last=Clark|first=Stephen|publisher=Spaceflight Now|date=5 February 2020|access-date=15 March 2021}}</ref> The total cost of the mission is $964 million, which includes spacecraft construction, launch, and operations.<ref name=ars/> PACE successfully launched on 8 February 2024 at 06:33 UTC.<ref name="nasa-20231211">{{cite press release |url=https://www.nasa.gov/news-release/nasa-invites-media-to-launch-of-new-mission-to-study-oceans-clouds/ |title=NASA Invites Media to Launch of New Mission to Study Oceans, Clouds |work=[[NASA]] |date=11 December 2023 |access-date=11 December 2023}}</ref> On 17 April 2024 it was announced that first operational data was received.<ref>{{Cite web |date=2024-04-17 |title=NASA’s Near Space Network Enables PACE Climate Mission to ‘Phone Home’ - NASA |url=https://www.nasa.gov/technology/space-comms/nasas-near-space-network-enables-pace-climate-mission-to-phone-home/ |access-date=2024-04-18 |language=en-US}}</ref>

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