CEOS IGOS Feb. 20041

Ocean Color SensorsOcean Color Sensorsfor Coastal Monitoringfor Coastal Monitoring

JAXA EORCJAXA EORC

Hiroshi MurakamiHiroshi Murakami

IGOS Coastal Theme, February 2004IGOS Coastal Theme, February 2004

Ishikari Bay GLI 250m 2003/07/26

CEOS IGOS Feb. 20042

1. Planning of S-GLI mission1. Planning of S-GLI mission

JAXA and science groups have been investigating the next JAXA and science groups have been investigating the next mission of GLI for several years; frequent, visible-infrared, mission of GLI for several years; frequent, visible-infrared, middle-resolution, and global-coverage radiometer (S-GLI). middle-resolution, and global-coverage radiometer (S-GLI).

After the trouble of ADEOS-2 GLI, we are setting 2008 as After the trouble of ADEOS-2 GLI, we are setting 2008 as the launch date of the S-GLI prior mission (S-GLI ALOHA the launch date of the S-GLI prior mission (S-GLI ALOHA version). The sensor should be simple, low risk, long life, version). The sensor should be simple, low risk, long life, and has high and has high applicability. applicability. (ALOHA: Atmosphere, Land and Ocean Harmonized Answer)

Main objective of the next mission will be “Main objective of the next mission will be “Coastal AreaCoastal Area” ” research and monitoring with high frequency (once/day), research and monitoring with high frequency (once/day), high resolution (250m), and high SNR (for ocean color).high resolution (250m), and high SNR (for ocean color).

All plans are still under discussion.All plans are still under discussion.

CEOS IGOS Feb. 20043

2. Concept of S-GLI2. Concept of S-GLI missionunder discussion

We should understand and predict influences of We should understand and predict influences of human activities to the earth environment more human activities to the earth environment more clearly.clearly.

Japan has a long coastline, active fishery and Japan has a long coastline, active fishery and cultivation, dense population near the coast, and cultivation, dense population near the coast, and rapidly developing neighbors. rapidly developing neighbors.

We should have “coastal monitoring sensors” We should have “coastal monitoring sensors” as an contribution to many people lived in the as an contribution to many people lived in the coastal environment all over the world.coastal environment all over the world.

CEOS IGOS Feb. 20044

Understanding of coastal-area processesUnderstanding of coastal-area processesIncome and expenditure of materials (carbon, soil, pollutant...) and Income and expenditure of materials (carbon, soil, pollutant...) and heat.heat.

Process of primary production (contribution in the carbon cycle)Process of primary production (contribution in the carbon cycle)

Interaction between coast and open ocean.Interaction between coast and open ocean.

Coastal area monitoringCoastal area monitoringPollution of material and heat due to Pollution of material and heat due to urbanizationurbanization and and industrializationindustrialization

Eutrophication (e.g., red tide) in the coastal and in-land watersEutrophication (e.g., red tide) in the coastal and in-land waters

Natural disasters (abnormal wind, rain, influence of an earthquakNatural disasters (abnormal wind, rain, influence of an earthquake..)e..)

Estimation of productivity (fishery locations and Estimation of productivity (fishery locations and a a catch ofcatch of fish fish))

High resolution sea-ice position and displacementHigh resolution sea-ice position and displacement

Near real-time inputs of high resolution numerical (physical, biologicNear real-time inputs of high resolution numerical (physical, biological and chemical) models in the coastal area.al and chemical) models in the coastal area.

3. Objectives of the S-GLI3. Objectives of the S-GLIunder discussion

CEOS IGOS Feb. 20045

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 resultsAnalyzed results Investigation of coastal-area processes Coastal area monitoring (near-real time) Contribution to the life of the people

4. Expected ocean products by S-GLI4. Expected ocean products by S-GLI under discussion

CEOS IGOS Feb. 20046

5. Current investigations for S-GLI5. Current investigations for S-GLIGLI showed possibility of 250-m ocean-color observation

Atmospheric correction by GLI 250m (CH23) &1km (CH15) channels.

clear eddy and current structure

Noise range is equivalent to small

structures.

Need more SNR

1 km CHLA1 km CHLA

250m CHLA250m CHLA

about 50km

CEOS IGOS Feb. 20047

5. Current investigations for S-GLI5. Current investigations for S-GLIan example of Tokyo-Bay

We can see structures around coast and mouth of rivers

250m nLw RGB250m nLw RGBabout 50km

250m CHLA 250m CHLA 2003/06/05 2003/06/05

We are here.

2003/09/28 2003/09/28