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Missions: Emergency Response Education Research
Real-time data: NOAA AVHRR GOES-8 GVAR Orbview-2 SeaWiFS Terra/Aqua MODIS OCEANSAT-1 OCM RADARSAT/ERS-2 SAR
Earth Scan Lab, Coastal Studies Institute
Louisiana State UnviersityBaton Rouge, Louisiana
Directors: Oscar Huh, Nan Walker Associate Director: Larry Rouse System Manager: Alaric Haag
Coastal Applications for Remote Sensing
*Storm/hurricane tracking and impacts*Surveillance of high velocity shelf and slope
currents*Tracking/prediction of oil spills
* Map Coastal Flooding* Managing Eutrophication/Hypoxia
* Harmful algal blooms (HABs)* Managing river diversions - sediments, algal
blooms, and salinity* Assess Land Loss or Gain
*Surveillance of marsh/wetland changes
IR channels: 3.8-4.0 10.2-11.2 11.5-12.5 microns
Night-time composites were produced using
warmest pixels over 10 hours
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X1 X2 1 2 3 4 5 6 7 12 13 14 15 16 17 18 19 20 21 22
Stations
Su
spen
ded
Sed
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t (m
g l
-1)
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Mo
del
Est
imat
e o
f S
usp
end
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Sed
imen
t (m
g l
-1)
In-Situ Predicted SS
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0.4 0.5 0.6 0.7 0.8 0.9 1
SeaWiFS 670 nm Radiance (mW cm-2 µm-1 sr-1)
Fie
ld m
ea
su
red
Su
sp
en
de
d S
ed
ime
nt
(mg
l-1)
Quantifying in-water substances with SeaWiFS
Chlorophyll a Suspended Sediment
Critical Resolution Needs
* Spectral: narrow bands
* Spatial: 250m-1 km
* Temporal: 15-30 minutes
* Radiometric: 12 bit
Remote Sensing Needs in Coastal Zone
Parameter Wavelength
Suspended sediments: 0.64 µmChlorophyll a, harmful algal blooms: 0.49 µm, 0.55 µmLand/water boundary, flooding: 0.86 µmSea surface temperature: 3.9, 11, 12 µm
Spatial resolution < 0.5 km visible, 1 km thermalTemporal resolution 15-30 minutes
Model R R2 RMS Error Bias
Ch 2,4,5 0.99 0.98 0.45 -0.003
Ch 2,4 0.99 0.98 0.47 0.003
Ch 2 0.99 0.98 0.48 0.003
Y= 1.51 + 1.04 (Ch2) + 0.39 (Ch 4 – Ch 5)
Y= 1.75 + 1.18 (Ch 2) + (-0.133) (Ch4)
Y = 1.51 + 1.06 (Ch2)
SST night-time algorithms: GOM region