한국   대만   중국   일본 
FLEX (satellite) - Wikipedia Jump to content

FLEX (satellite)

From Wikipedia, the free encyclopedia
For other uses, see Flex (disambiguation) .
FLEX
Mission type Earth observing satellite
Operator ESA
Mission duration 3.5 years (planned) [1]
Spacecraft properties
Bus Myriade
Manufacturer Thales Alenia Space
Launch mass 460 kilograms (1,010 lb)
Power 700W
Start of mission
Launch date 2026 (planned) [2]
Rocket Vega-C
Launch site Kourou ELV
Contractor Arianespace
Orbital parameters
Reference system Geocentric
Regime Sun-synchronous
Altitude 814 km
Inclination 98.64°
Repeat interval 27 days
←  BIOMASS
FORUM  →
 

The FLuorescence EXplorer ( FLEX ) is a planned mission by the European Space Agency to launch a satellite to monitor the global steady-state chlorophyll fluorescence in terrestrial vegetation. [3] FLEX was selected for funding on 19 November 2015 [3] [4] [5] [6] [7] [8] [9] [10] and will be launched on a Vega C rocket from Guiana Space Centre in mid-2026. [2] [11]

Overview [ edit ]

The FLuorescence EXplorer (FLEX) mission is the eighth mission in the Earth Explorer programme, (part of ESA's Living Planet Programme ). It comprises a satellite for the global monitoring of steady-state chlorophyll fluorescence in terrestrial vegetation. [12] Leaf photosynthesis releases energy not required in the biochemical process in the form of light in wavelength between 640 and 800 nanometres. [3]

After more than 70 years of basic and applied research in chlorophyll fluorescence, it is now established that fluorescence is a sensitive indicator of photosynthesis in both healthy and physiologically perturbed vegetation that can be used to monitor croplands and forests. [3]

Fluorescence is a powerful non-invasive tool to track the status, resilience, and recovery of photochemical processes, and provides important information on overall photosynthetic performance with implications for related carbon sequestration . The early responsiveness of fluorescence to atmospheric, soil and plant water balance, as well as to atmospheric chemistry and human intervention in land usage, makes it a useful biological indicator in improving the understanding of Earth system dynamics .

FLEX will encompass a three-instrument array for measurement of the interrelated features of fluorescence, hyperspectral reflectance, and canopy temperature.

The program will involve a space and ground-measurement program of 3-years duration and will provide data formats for research and applied science.

See also [ edit ]

References [ edit ]

  1. ^ "Fluorescence Explorer (FLEX) ? Facts and Figures" . ESA . Retrieved 3 January 2020 .
  2. ^ a b "ALTIUS - ESA's ozone mission" . ESA . Retrieved 4 May 2024 .
  3. ^ a b c d Amos, Jonathan (19 November 2015). "Flex satellite will map Earth's plant glow" . BBC News . Retrieved 2015-11-20 .
  4. ^ de Selding, Peter B. (25 September 2015). "Panel Endorses Vegetation Fluorescence Mapper for ESA's Earth Explorer Program" . Spacenews . Retrieved 3 October 2015 .
  5. ^ Kraft, S; Del Bello, U; Bouvet, M; Drusch, M; Moreno, J (2012). "FLEX: ESA's Earth Explorer 8 candidate mission". 2012 IEEE International Geoscience and Remote Sensing Symposium . pp. 7125?7128. doi : 10.1109/IGARSS.2012.6352020 . ISBN   978-1-4673-1159-5 . S2CID   7603157 .
  6. ^ Kraft, S; Bezy, J.-L; Del Bello, U; Berlich, R; Drusch, M; Franco, R; Gabriele, A; Harnisch, B; Meynart, R; Silvestrin, P (2013). "FLORIS: Phase a status of the fluorescence imaging spectrometer of the Earth Explorer mission candidate FLEX". In Meynart, Roland; Neeck, Steven P.; Shimoda, Haruhisa (eds.). Sensors, Systems, and Next-Generation Satellites XVII . Vol. 8889. pp. 88890T. doi : 10.1117/12.2032060 . S2CID   128624334 .
  7. ^ Drusch, Matthias; Moreno, Jose; Del Bello, Umberto; Franco, Raffaella; Goulas, Yves; Huth, Andreas; Kraft, Stefan; Middleton, Elizabeth M; Miglietta, Franco; Mohammed, Gina; Nedbal, Ladislav; Rascher, Uwe; Schuttemeyer, Dirk; Verhoef, Wout (2017). "The FLuorescence EXplorer Mission Concept?ESA's Earth Explorer 8". IEEE Transactions on Geoscience and Remote Sensing . 55 (3): 1273?1284. Bibcode : 2017ITGRS..55.1273D . doi : 10.1109/TGRS.2016.2621820 . S2CID   5267592 .
  8. ^ Stoll, M.P; Buschmann, C; Court, A; Laurila, T; Moreno, J; Moya, I (2003). "The FLEX-Fluorescence Explorer mission project: Motivations and present status of preparatory activities". IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477) . Vol. 1. pp. 585?587. doi : 10.1109/IGARSS.2003.1293850 . ISBN   978-0-7803-7929-9 . S2CID   56932583 .
  9. ^ Rascher, Uwe; Gioli, Beniamino; Miglietta, Franco (2008). "FLEX ? Fluorescence Explorer: A Remote Sensing Approach to Quantify Spatio-Temporal Variations of Photosynthetic Efficiency from Space". Photosynthesis. Energy from the Sun . pp. 1387?1390. doi : 10.1007/978-1-4020-6709-9_299 . ISBN   978-1-4020-6707-5 .
  10. ^ Harnisch, Bernd; Kraft, Stefan; Bezy, Jean-Loup; Drusch, Matthias; Bouvet, Marc; Del Bello, Umberto (2017). "Fluorescence imaging spectrometer concepts for the Earth explorer mission candidate flex". International Conference on Space Optics ? ICSO 2012 . p. 72. doi : 10.1117/12.2309086 . ISBN   9781510616172 . S2CID   125313615 .
  11. ^ "Arianespace to launch with Vega C FLEX & ALTIUS, two ESA programmes at the service of environment" . Arianespace (Press release). 11 January 2022 . Retrieved 11 January 2022 .
  12. ^ "FLEX (Fluorescence Explorer)" . www.eoportal.org . Retrieved 2022-12-28 .

External links [ edit ]


Stub icon

This article about one or more spacecraft of a European multinational organisation is a stub . You can help Wikipedia by expanding it .

Retrieved from " https://en.wikipedia.org/w/index.php?title=FLEX_(satellite)&oldid=1222167647 "