airborne measurements of the columbia river plume andy jessup and bill plant apl-uw
DESCRIPTION
Airborne Measurements of the Columbia River Plume Andy Jessup and Bill Plant APL-UW. Determine Plume Location/Characteristics SST Water Type/Sediment Load Waves (dir. spectra), roughness features Identify features of interest (fronts, IW). Airborne Sensors. Infrared Surface Temperature - PowerPoint PPT PresentationTRANSCRIPT
Airborne Measurements of the Columbia River PlumeAndy Jessup and Bill Plant
APL-UW
• Determine Plume Location/Characteristics– SST– Water Type/Sediment Load– Waves (dir. spectra), roughness features
• Identify features of interest (fronts, IW)
Airborne Sensors• Infrared
– Surface Temperature– Interpolated maps from calibrated radiometer– High resolution imagery (FY08)
• Microwave– Surface Velocity / Current– Surface Roughness / Waves
• Ocean Color / Hyperspectral (FY08)– Water type / Sediment load– Hyperspectral radiometer– Color Video Camera using RGB separation
21.0
20.5
20.0
19.5
Run09-86
T (°C)
a
20.5
20.0
19.5
19.0
18.5
Run09-1128
T (°C)
b
20.5
20.0
19.5
Run09_421
T (°C)
c
19.5
19.0
18.5
Run09-340
T (°C)
d
41.4
41.3
41.2
41.1
41.0
40.9
La
titu
de
(N
)
-70.8 -70.7 -70.6 -70.5 -70.4 -70.3Longitude (W)
22.021.521.020.520.019.519.0Temperature (°C)
Martha's Vineyard
25 km
Fig 9d
Fig 9bFig. 9a
Fig 9c
Infrared Imagery and SST Maps
30 km x 30 km, 5 km spacing2-3 hours flight time
O(100 m)
Seasonal Location of PlumeTraditional View
[Hickey et al., 2005]
Surface Salinity
40 km x 40 km Survey Area
[Hickey et al., 2005]
Aerial Photographs
Surface Wave Breaking Due to Internal Waves along Plume Front
[Nash & Moum, OSU web site]
Conclusion• Practical daily survey area
– 40 km x 40 km– 4-6 hours
• Plume has local and regional effect– Local scale: roughly 40 km x 40 km– Regional 50 km offshore, 100 km along shore
• Coordinated daily aircraft survey– Map plume characteristics– Identify features of interest