NRL 7343 Nov’97 Remote Sensing in the Japan East Sea Robert ArnoneRichard Gould Chistine Chan Sherwin Ladner Naval Research Laboratory Stennis Space Center
NRL 7343 Nov’97 Objective: Establish the seasonal and regional character of the SST and Bio-Optical (Chlorophyll) distribution (i.e. time -series) AVHRR / SeaWIFS GAC /and LAC (resolution) Coupling of the temperature and bio-optical structure (physical) on the Subpolar front/ Korean Coastal Current Determine link of the surface features with subsurface Real –time satellite imagery (AVHRR and SeaWIFS ) for directing SeaSoar SeaWIFS validation. CRUISE ONE RESULTS – SEASOAR – May /June 1999
NRL 7343 Nov’97 Status of Remote Sensing AVHRR - - HRPT (1 km) daily imagery -NOAA – LAC1998/1999 limited - Shipboard system - KORDI – HRPT – (ftp) - July Japan Ischio Asamasi total 1998 – 227 total 1999 – 384 total of GAC (Monthly) -Phy O DACC (JPL) SeaWIFS - HRPT (1 km) - Goddard (SeaWIFS project) - Ship board system - GAC (monthly) – SeaWIFS project AVHRR - - HRPT (1 km) daily imagery -NOAA – LAC1998/1999 limited - Shipboard system - KORDI – HRPT – (ftp) - July Japan Ischio Asamasi total 1998 – 227 total 1999 – 384 total of GAC (Monthly) -Phy O DACC (JPL) SeaWIFS - HRPT (1 km) - Goddard (SeaWIFS project) - Ship board system - GAC (monthly) – SeaWIFS project
NRL 7343 Nov’97
May. 21, km km km Coastal Upwelling Upwelling Upwelling SST Eddy Scales Filament Roll um’ Roll um’
NRL 7343 Nov’97
SeaWIFS Daily Movie AVHRR Movie SeaWIFS Monthly Movie AVHRR Monthly Monthly Movie SeaWIFS Weekly 1999 Movie SeaWIFS Weekly 1998 Movie AVHRR Weekly 1998 Movie AVHRR Weekly 1999 Movie AVHRR- SeaWIFS AVHRR- SeaWIFS Monthly Movie
NRL 7343 Nov’97 AVHRR Monthly Composite Monthly Composite Korea Japan Russia China Time-Series Analyses AVHRR – SST SeaWIFS – Chlorophyll Nov Oct 1999 SeaWIFS Monthly Composite Monthly Composite ! Residuals
NRL 7343 Nov’ SST Spring Bloom Bloom Fall Spring Basin Time Series Gac Imagery
NRL 7343 Nov’ Latitude Binned Seasonal progression of SST and Chlorophyll of SST and Chlorophyll Sea Surface Temperature (AVHRR -GAC) Chlorophyll (SeaWIFS - GAC) Spring Bloom
NRL 7343 Nov’97 Regional Time- Series Weekly Composites North Basin South Basin SubPolar Front
NRL 7343 Nov’97 Time Series Analyses WEEKLY (HRPT) SeaWIFS AVHRR
NRL 7343 Nov’97 Differences in SST and Chlorophyll March 24, 1998 Julian: 083 Sea Surface Temperature Chlorophyll
NRL 7343 Nov’97 SeaWIFS -CHL AVHRR - SST March 31, 1998
NRL 7343 Nov’97 May 21, 1999 SST and Chlorophyll
NRL 7343 Nov’97 Stations Stations NRL Reflectance CTD Atmospheric Sounding SubPolar Front Cruise track SST 21 May, 1999 Bio-Optics Bio-Optics Cruise results: May - June 1999 Stations 40 ASD – remote sensing reflectance ac9 – flowthrough (10 sec) Sun Photometer (80) - Shipboard receiving – 200 AVHRR - 25 SeaWIFS
NRL 7343 Nov’97 East Sea Cruise, HNRO05 19 May - 3 June, 1999 ASD Station Locations , , ,19 11,
NRL 7343 Nov’97
East Sea -- Thermal/Bio-Optical Relationships Define region of interest Extract ROI pixels from SST (AVHRR) and chlorophyll (SeaWiFS) imagery - daily scenes and monthly composites Examine thermal/bio-optical relationships (scatter plots, image overlays) Examine temporal and spatial changes (time-series analysis, histograms) North Basin Subpolar Front South Basin Korean Coast
NRL 7343 Nov’97 Subpolar Front -- May 21, 1999 CHL SST CHL > 2.0 g/l SST AVHRR and SeaWiFS Collected ~ 6 hrs apart Chlorophyll SST CHL > 2.0 g/l
NRL 7343 Nov’97 AVHRR SST May 21, 1999 AVHRR SST May 21, 1999 Cruise track AVHRR SST ShipFlow Through
NRL 7343 Nov’97SeaWIFSAbsorption 440 (Arnone) SeaWIFS (atotal 440) Flowthrough (atotal 443)
NRL 7343 Nov’97 SeaWIFS (bb550) Flowthrough b550
NRL 7343 Nov’97 April 25, 1999 Week 17 Week 17
NRL 7343 Nov’97 Summary - Time series of AVHRR- SST and SeaWIFS Bio-optics -Movie Loops - Seasonal and regional trends - Spring / Fall Blooms - Eddy Fields – scales - Complex SST / Chlorophyll linking - May Seasoar Cruise – - Optical properties / absorption/ scattering and RRS - Characterization of SeaWIFS IOP
NRL 7343 Nov’97 Korean Coast -- May 21, 1999 CHLSST Chlorophyll SST CHL > 2.0 g/l
NRL 7343 Nov’97 June 10, Week 23
NRL 7343 Nov’97 Subpolar Front -- April, May, June, 1999 April 21, 1999 CHL > 2.0 g/l SST May 21, 1999 June 9, 1999 CHL > 2.0 g/l Chlorophyll SST Chlorophyll SST Chlorophyll SST
NRL 7343 Nov’97 COMPARISONS No iteration 10 iterations Japan East Sea Decreased Chlorophyll Values