Requirement for atmospheric corrections Linear stretch images of TOA and Rayleigh/Ozone/Water Vapor...
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Transcript of Requirement for atmospheric corrections Linear stretch images of TOA and Rayleigh/Ozone/Water Vapor...
Requirement for atmospheric corrections
Requirement for atmospheric corrections
Linear stretch images of TOA and Rayleigh/Ozone/Water Vapor Corrected reflectance by using the same reflectance maximum and minimum
TOA reflectance Rayleigh/Ozone/Water VaporCorrected reflectance
Surface reflectance and Top of the atmosphere
Surface reflectance and Top of the atmosphere
Image from: http://www.profc.udec.cl/~gabriel/tutoriales/rsnote/cp9/cp9-2.htm
PEN EquipmentsPEN EquipmentsTKY
TGF
MSE
RHN
Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Jan. Feb.
HSSR
http://www.pheno-eye.org
SP
ADFC
Validation (SP & MOD08)Validation (SP & MOD08)
0
0.4
0.8
1.2
1.6
2005 2006
Optical Depth Skyradiometer(400nm) MOD08(470nm)
0
0.4
0.8
1.2
1.6
2005 2006
Optical Depth Skyradiometer(400nm) MOD08(470nm)
0
0.4
0.8
1.2
1.6
2005 2006
Optical Depth Skyradiometer(500nm) MOD08(550nm)
0
0.4
0.8
1.2
1.6
2005 2006
Optical Depth Skyradiometer(500nm) MOD08(550nm)
0
0.4
0.8
1.2
1.6
2005 2006
Optical Depth Skyradiometer(675nm) MOD08(660nm)
0
0.4
0.8
1.2
1.6
2005 2006
Optical Depth Skyradiometer(675nm) MOD08(660nm)
0
0.5
1.0
1.5
2.0
2005 2006
Angstrom Exponent Skyradiometer(400-675nm) MOD08(470-660nm)
0
0.5
1.0
1.5
2.0
2005 2006
Angstrom Exponent Skyradiometer(400-675nm) MOD08(470-660nm)
Validation (SP & MOD04)Validation (SP & MOD04)
0
0.4
0.8
1.2
1.6
MO
D04(4
70nm
)
0 0.4 0.8 1.2 1.6Skyradiometer(400nm)
Optical Depth
TKY
0
0.4
0.8
1.2
1.6
MO
D04(4
70nm
)
0 0.4 0.8 1.2 1.6Skyradiometer(400nm)
Optical Depth
TKY
0
0.4
0.8
1.2
1.6
MO
D04(5
50nm
)
0 0.4 0.8 1.2 1.6Skyradiometer(500nm)
Optical Depth
TKY
0
0.4
0.8
1.2
1.6
MO
D04(5
50nm
)
0 0.4 0.8 1.2 1.6Skyradiometer(500nm)
Optical Depth
TKY
0
0.4
0.8
1.2
1.6
MO
D04(6
60nm
)
0 0.4 0.8 1.2 1.6Skyradiometer(675nm)
Optical Depth
TKY
0
0.4
0.8
1.2
1.6
MO
D04(6
60nm
)
0 0.4 0.8 1.2 1.6Skyradiometer(675nm)
Optical Depth
TKY
0
0.5
1.0
1.5
2.0
MO
D04(4
70-6
60nm
)
0 0.5 1.0 1.5 2.0Skyradiometer(400-675nm)
Angstrom Exponent
TKY
0
0.5
1.0
1.5
2.0
MO
D04(4
70-6
60nm
)
0 0.5 1.0 1.5 2.0Skyradiometer(400-675nm)
Angstrom Exponent
TKY
TGFTGF TGFTGF
TGFTGF TGFTGF
Previous System FrameworkPrevious System Framework
MODIS MOD08 Daily image
• Time consuming and need high level user experience.
• Lack of Robustness and scalable
• Not convenience for sharing among communities
On developing
PEN Observation System
PEN Observation System
SPSP
ADFCADFC
HSSRHSSR
PSSPSSPSSPSS
Site BSite BSite BSite B
Site CSite CSite CSite CSite DSite DSite DSite D
PMSPMSPMSPMSInput Web
Page
PEN DB & Backup
52NorthSOS52NorthSOS Mapserver Mapserver
OGC System Framework OGC System Framework
PEN Observation System
PEN Observation System
SPSP
ADFCADFC
HSSRHSSR
PSSPSSPSSPSS SOSSOSSOSSOS
MODIS MOD08 MODIS MOD08 Daily imageDaily image
WMS,WMS-TWMS,WMS-TWMS,WMS-TWMS,WMS-T
WPSWPSWPSWPS
GetFeatureInfo[MODIS value
from start to end]
JSONGetObservation[During MODIS
overpass time from start to end]
JSON
Overpass time Overpass time scenescene
PyWPS• Validation process• Least Square Fitting process
PyWPS• Validation process• Least Square Fitting process
ClientClientClientClient
Execute[station,start,end,product]
JSON
GetObservation ADFC
Satellite-Field Data Integrator (SFI)
ConclusionConclusion
• Comprehensive web-based GIS system framework enabled – Based on various open standards of OGC specifications– Using FOSS
• Mapserver, 52North SOS, PyWPS• OpenLayers, jQuery,
• Assimilation of sensor observation data and satellite image– Wider area, More accuracy, Reasonable cost
• Validation of aerosol properties from Satellite estimation with ground based sites– Improve the following product which relied on satellite image
“surface reflectance”
Future DevelopmentFuture Development
• Increase atmospheric observation network– Skynet
• Improving performance– Distributing ground site data source
• More than two million records for two station and four years
– WMS-T full supported with Mapserver– MOD03 overpass time to MOD08 Global dataset
• Possible to error 5 minutes observation
• Satellite image product validation– GLEON (Global Lake Ecological Observatory Network)
• Lake monitoring : SST, Chl. A : MODIS Ocean product
– CO Flux monitoring : Asiaflux / Japanflux
• Water Column Correction– CREON (Coral Reef Environmental Observatory Network)
• Validation with higher satellite image resolution– ASTER, FOMARSAT