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Ocean Color Sensors for Coastal Monitoring

Ocean Color Sensors for Coastal Monitoring. JAXA EORC Hiroshi Murakami IGOS Coastal Theme, February 2004. Ishikari Bay GLI 250m 2003/07/26. 1. Planning of S-GLI mission.

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Ocean Color Sensors for Coastal Monitoring

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  1. Ocean Color Sensorsfor Coastal Monitoring JAXA EORC Hiroshi Murakami IGOS Coastal Theme, February 2004 CEOS IGOS Feb. 2004 Ishikari Bay GLI 250m 2003/07/26

  2. 1. Planning of S-GLI mission • JAXA and science groups have been investigating the next mission of GLI for several years; frequent, visible-infrared, middle-resolution, and global-coverage radiometer (S-GLI). • After the trouble of ADEOS-2 GLI, we are setting 2008 as the launch date of the S-GLI prior mission (S-GLI ALOHA version). The sensor should be simple, low risk, long life, and has high applicability. (ALOHA: Atmosphere, Land and Ocean Harmonized Answer) • Main objective of the next mission will be “Coastal Area” research and monitoring with high frequency (once/day), high resolution (250m), and high SNR (for ocean color). • All plans are still under discussion. CEOS IGOS Feb. 2004

  3. 2. Concept of S-GLI missionunder discussion • We should understand and predict influences of human activities to the earth environment more clearly. • Japan has a long coastline, active fishery and cultivation, dense population near the coast, and rapidly developing neighbors. We should have “coastal monitoring sensors” as an contribution to many people lived in the coastal environment all over the world. CEOS IGOS Feb. 2004

  4. 3. Objectives of the S-GLIunder discussion • Understanding of coastal-area processes • Income and expenditure of materials (carbon, soil, pollutant...) and heat. • Process of primary production (contribution in the carbon cycle) • Interaction between coast and open ocean. • Coastal area monitoring • Pollution of material and heat due to urbanization and industrialization • Eutrophication (e.g., red tide) in the coastal and in-land waters • Natural disasters (abnormal wind, rain, influence of an earthquake..) • Estimation of productivity (fishery locations and a catch of fish) • High resolution sea-ice position and displacement • Near real-time inputs of high resolution numerical (physical, biological and chemical) models in the coastal area. CEOS IGOS Feb. 2004

  5. 4. Expected ocean products by S-GLIunder discussion • Surface optical parameters • Normalized water-leaving radiance • Aerosol information • Photosynthetically available radiation • In-water parameters • Chlorophyll-a concentration • Suspended solid concentration • Colored dissolved organic matter • Thermal parameters • Surface temperature • Analyzed results • Investigation of coastal-area processes • Coastal area monitoring (near-real time) • Contribution to the life of the people CEOS IGOS Feb. 2004

  6. 5. Current investigations for S-GLIGLI showed possibility of 250-m ocean-color observation 1 km CHLA clear eddy and current structure 250m CHLA about 50km Noise range is equivalent to small structures. Need more SNR CEOS IGOS Feb. 2004 Atmospheric correction by GLI 250m (CH23) &1km (CH15) channels.

  7. 5. Current investigations for S-GLIan example of Tokyo-Bay We are here. 250m CHLA 2003/06/05 2003/09/28 about 50km 250m nLw RGB We can see structures around coast and mouth of rivers CEOS IGOS Feb. 2004

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