Transcript OBSERVATOIRE SATELLITE - IRD Bretagne

Paramètres de surface océanique
par télédétection
Oceanic surface parameters
by remote sensing
Dominique DAGORNE – IRD – Centre de Bretagne – US025
Aim :
For the « final » users, collection of the main products of
oceanic surface parameters obtained by remote sensing
- products
SST , SSR (« color ») , « wind », « topography» (futur (2008 ?) : Salinity)
- delivery : Delayed Time : DT (historical) /Near Real Time : NRT (operationnal ?)
- spatio - temporal scale at the best
«résolution » (?)
hourly - daily – weekly – monthly - … climatology
local – regional – global
studies areas :
ocean east boundary systems (Upwelling)
Equatorial Atlantic (EGEE/AMMA)
others requirements : Pacific , Indien, mediterranean,..
USING
Observation
- temporal analysis of parameters : values, anomalies, indexes, ( ex CUI)
temporal plot , transect space – time (hovmoller)
: advanced data analysis : EOF, wavelet,..
Modelisation
- Validation : sparse in-situ data (ship, buoys,..)
- Forcing parameters : monthly climatologies , 8 days SST, daily wind,..
Derived products
- others « satellite » products of interest : radiative fluxes, clouds , aerosols, ..
- Turbulent fluxes (latent – sensible) and net balance
SOME DEFINITIONS
Satellite DATA and PRODUCTS :
level 0 : « raw » satellite measurement obtained in « direct read out » receiving station
level 1 : L0 démultiplexed (DN) radiance + parameters : calibration, navigation, time,..
level 2 : calibrated data « Top Of Atmosphere »
reflectance (VIS, NIR) – brighness temperature (Tb) (IR, MW)
(geo)localisation - « cloud mask »
level 3 : surface (or atmospheric) geophysical parameters
obtained by (complex) modelisation of satellite data .
( direct-inverse problems - others data : meteorological )
- atmospherics effects ( angles , water vapour, .. )
- primary products : ex : SST , Nlwr i,..
- surface effects ( marine optics , emissivity, rugosity,..)
- secondary products : ex : « color» ( CHLa, PAR,..), wind, ..
« instantaneous » cartographic restitution
level 4/5 : level 3 multitemporal composite (synthesis) by (M)hours, (N) days , week, month
ex : daily Mean Wind Field , 3 days SST , Weekly CHLa
« synthesis » products obtained by merging and interpolation
ex : global interpolated SST, Primary Production (CHL,SST, PAR,..)
CONSTRAINT (1)
Physics of measurement
Remote sensing : long distance electromagnetic spectrum observation
of earth - atmosphere system by a couple vector-sensor
Depending of
collector (telescope-antenna)
detector (Signal / Noise )
spectrum (width,window, absorption, diffusion,..)
instant (Day/Night, viewing - solar angles,..)
atmosphere : Temperature, Humidity,
CLOUDS ,
aerosols, ozone, rare gas
surface : reflectance , emissivity, temperature,..
direct communication – on-board recording
Passive surface observation domain : window channels (radiometer)
- « refectivity » :0.4 -4 mu : Visible – Near Infra-Red VIS/NIR (0.5 – 1.2, 1.6 mu)
Mean Infra-Red MIR ( 3.6 mu)
- « emissivity » : 3-15 mu : Thermic Infra-Red
TIR ( 10-12 mu)
Micro-Wave MW ( 10 – 21 – 37 - 85 – 150 Ghz)
Active : radar micro-wave (scaterrometer, altimeter)
CONSTRAINT (2)
Sensor(s) – Vector system
Orbit satellite :
- polar heliosynchronous ( ~ 800 km) – equatorial
2 pass by day : ASCending/DEScending orbits (latitude effect)
- geosynchronous (~ 36000 km) : fixed earth observation
Sensor :
optical (VIS-NIR, TIR) :
nadir scanning
wide viewing fields for global environnement
( # narrow viewing for earth observation )
antenna ( passif MW ) : lobe – conical scanning
Détector : spectro - radiometers (CCD) :
surface imager (window) - vertical atmospher sounding
compromise between channel bandwidth
– channel number and résolution
weight / volume - power ( actif radar )
on board archiving - transmission capabilities
CONSTRAINT (3)
acces and distribution ( cf « level » .. Data - Product)
Scale – résolution
Spatial : global (100-10 km) / regional (10-1km) / local (< 1 km)
local acquisition et preprocessing : receiving station (ex : NOAA/HRPT)
archiving – distribution (Global/Regional DAC )
 opérationnal ( WHO ?? )
temporal : month / week / instantanneous ( day / hour) - delivery (DT/NRT)
Quality
« processing » validity ( preprocessing from level 0 to level 4 )
calibration – navigation – cloud – geophysical algorithm (ex : SST)
« practical issues »
software : (I/O : « data format ») – environnement
« standards » : raw / netCDF / HDF /... - software tools : matlab / IDL /…
consultation (WEB-LAS) - transfert (ftp)
distributed or local processing (OpenDAP)
CONSTRAINT (4)
history : mécanics (rocket - satellite)
électronics – computing (telecom – archiving - processing,..)
1972 (LANDSAT) for earth observation
météorology – environnement
operationnals agencies
: 1978 (TIROS-N (NOAA)– GOES/ Meteosat1 ) )
: NOAA – EUMETSAT – JMA – CMA : operationnal
POES : Polar Orbiter Environnement System
NOAAi ( now 18) – METOP (07/2007) – (FY- i)
DMSP ( SSM/I) (Navy , USAF,..)
GOES : Geosynchronous ,,
,,
,,
GOES-N , Meteosat (Met8-MSG) , GMS, (FY- i+1)
scientifics agencies : NASA – ESA – JAXA : experimental
SEASAT (SAR - SMRR), NIMBUS (HCMM-CZCS)-Orbview (seawifs)
ERS 1-2 (wind) , JASON – T/P (altimetry)
ENVISAT : MERIS,…, EOS (Acqua-Terra..) : MODIS, AMSR,..
TRMM/TMI - SMOS
AVAILABLE PRODUCTS FOR OCEAN
- SST : Sea Surface Temperature
- SSR : Spectral Surface Reflectance or « color » :
Normalized leaving Water Radiance by channel
CHLA, attenuation (Kxx), CDOM, MES, FLH,optical depth, PP..
- « wind » : speed modulus – direction - components - stress
- « altimetry » : Sea Level Anomaly ( / mean ) ,
derived product : currents, eddies,..
- restitution technics
- sources
- résolutions - history
- limitations
Sea Surface Temperature (1)
1972 : Thermic Infra-Red channel using
channel 10-12 mu : atmospheric transparent window for TIR
Planck law : Radiance  Brightness temperature (Tb) Top Of Atmosphere
1978 – atmospheric correction « Water Vapour »  « Skin » temperature
differential absorption : « Split Window » algorithm ( sea emissivity = ctse , WV weak )
Radiative transfert modelisation (MODTRAN) + atmospheric models (R.S. : PTH , aerosols, angles,..)
+ expérimental adjustement by satellite , day/night with in-situ measurement (buoys)
 global / local processing (geographic, temporal )
CLOUD MASKING problem (atmospheric preprocessing )
VIS (day ) et MIR-TIR (day – night ) channel using
outside satellite datas (WV) and/or meteorological analysis/forecast
SST climatology – « local » atmospheric methodology
Vectors
Polar heliosynchronous - ~ 3000 km by swath
2 pass / day : ASCending – DEScending
- resolution 1 km
Géosynchronous : acquisition 30 mn (15 mn) – fixed geometry
temporal synthesis : 3H – 12 H - resolution ~ 5 km ( 3km)
Sea Surface Temperature (2)
NOAA-AVHRR : Advanced Very High Resolution Radiometer ( POES : NOAA-METOP )
5 channels VIS/NIR /MIR - 2 TIR ( 11 – 12 mu for atmospheric correction)
- NRT : acquisition HRPT/LAC (bande L) Level 0 - preprocessing ( L1b, L2)
~ 2000 km around receiving station – 2 (N) orbits/day - satellite ( latitude)
~ nominal 1 km ( ~ 5 km side ) – L3/L4 SST reprojected / synthesis (D,W,M)
ex : Europe ( SAF OI-Medspiration – 2km ) : NAR-SST , local receiving stations
- DT : global recording « on board » (GAC) - ~4 km subpoint
historical re-processing ( calibration, cloud, quality , synthesis,..)
PathFinder (PF) PO-DAAC 1985 – 2004 : - V4 : 9 km / V5 : 4km - daily ( night SST)
Physical Oceanography – Distributed Active Archive Center - NASA
EOS (Terra-Acqua) – MODIS (spectro-imager 32 channels VIS/NIR – MIR – TIR – 1 km )
NRT : acquisition (Bande X) + (pre)processing + distribution
ex : Europe : NERC : Dundee (acq) + PML/RSDAS (océano)
DT : 07/2002 (Acqua only ) – present
NASA – JPL : OceanColor (J-2) : day – 3D - week – month
day SST data ( with « color products »)
Sea Surface Temperature (3)
MSG+GOES : geosynchronous ; Atlantic + South East Pacific coverage
NRT – DT : SAF-OI / EUMETSAT ( Météo-France / CMS Lannion)
Atlantic MSG : 07/2004 ( GOES : 07/2001)
3H synthesis (synop) – 12H ( night – day ) ; 10 km resolution
1H SST + flags – 5 km resolution
rigourous
cloud mask ( SAF-NC) + SST algorithms
product : Medspiration : EU / GHRSST-PP ( with NOAA-AVHRR 2 km local)
GOES/NOAA : 6 km resolution
Others SST sources
ENVISAT/MERIS : spectro-imager 15 channel VIS-PIR / MIR / IRT – 1 km
~ MODIS : multi-usage ( ocean, continent, atmosphere)
ENVISAT/AATSR : bi-angular correction 1 channel - scientific product
Project : GHRSST-PP
comparaison / validation ( buoys – inter satellite ) : Match Data Base
SST skin-bulk - diurnal heating ( wind , solar flux) – WV/aerosols
Sea Surface Temperature (4)
Passive MicroWave (MW) measurement ..( Heritage from DMSP-SSM/I (1988))
« bulk » SST restitution by simultaneous MW channels (10.7 GHz for SST )
atmospheric interaction ( TWV, PWV, RR:rain ), surface (wind), SST, ..
NB : - Sea Surface Salinity (1.4 Ghz – interferometry ) by SMOS / ACQUARIUS (2007 ?)
TRMM/TMI Tropical Rainfall Measurement Mission – Microwave Imager : 1998/12
« equatorial » orbit 40N-40S
EOS-ACQUA/AMSR-E : Advanced Microwave Scanning Radiometer : 2002/07
polar heliosynchronous (pb in some countries : radio frequency pollution)
NRT/DT : REMSS (ssmi.com) / NASA
daily ( ASC/DES) - synthesis : 3 days / week/ month
no clouds limitations - resolution : ¼ deg (~ 25 km )
limitations : precipitation ( rain droplet interaction )
near coast ~100 km (continent –Island ) from MW emissivity
SST AVHRR global (PathFinder)
Daily ( orb desc) – Weekly
Global daily Analyzed product
with number and age observation
SST
AVHRR local - regional – 2 km
4 pass ( 2 satellites NOAA 16-17)
SST AVHRR
2 km
September 2002
3 Weeks
Monthly
Source :
SATMOS
Météo-France
ATL- SST
MSG-GOES
Daily
10 km
ATL-SST
MSG-GOES
12 hourly (day)
10 km
( but 3 km « raw »
Hourly - MSG
Intermediate product )
SST - MW
Resolution ~25 km
Daily
TRMM/TMI
Orb ASC/DES
1 day
3 days synthesis
AMSR-E/ACQUA
3 days synthesis
SSR Spectral Surface Reflectance - « Ocean Color » (1)
Interaction of incidente light with particules in suspension in water :
Phytoplancton , Dissolved Organic Matter (DOM), suspended matter (MES)
Measurement : Radiance values in several VIS channels (narrow bandwith )
- hight atmospheric sensibility (diffusion) et CLOUDS
- complex atmospherics corrections : WV, ozone, viewing-solar angles , « sun glint »
-
experimental bio-optical algorithms
Nlwr i : Normalized Leaving Water Radiance , band i ( 412, 443, 488, 510/530, 550, 670 mu)
CHL : Chlorophylle-a (many algorithms) ocean/coastal : OC4 (seawifs) – OC5 (MODIS) ,
others : ocean ( turbidity ,CDOM, MES). ..et atmospheric parameters ( PAR, aerosols : AOT, rayleight,..)
IOP : Inherent Optical properties , FLH : Fluorescence Line height (photosyntetic efficiency)
PP : Primary Productivity
Satellite Receiving
signal is
80% from
atmospheric sources
(outside clouds ! )
Top Of Atmosphere Radiances ( Lsat)
Atmospheric Radiative Transfer Model
Normalized Water Leaving Radiance (Nlwr) – channel i
Photosynthetic
Available Radiation
(PAR) solar (0.4-0.7)
Ocean Color Algorithms
(empirical/semi analytical)
Sea Surface CHLa
concentrations
Primary Production model
Higher level model
(export production, carbon
sequestration, fisheries,)
Photosynthetic
efficiency
( empirically from SST)
SSR - « Ocean Color » (2)
Vector : heliosynchronous polar orbiter (geosynchronous project : GOES-R .. 2010 ?)
1 pass / day
( day orbit )
Sensor : CZCS (NIMBUS 7) : Coastal Zone Color Scanner .. For memory !
SeaWIFS (orbview2) : Sea-viewing Wide Field of View Sensor 1998-2004
MODIS (EOS) : Moderate Resolution Imaging Spectroradiometer
TERRA (11/1999) – ACQUA (07/2002)
RT : LAC : acquisition idem SST (NOAA,MODIS) Level 0 / 1b , specifics (pre)processing Level 2
resolution : 1 km , ex : DUNDEE/RSDAS , local receiving station
NRT - DT : archiving – distribution all levels
+ other data + validation + software
NASA/GSFC http://oceancolor.gsfc.nasa.gov
Level 1-2 : by orbit et preprocessing (seadas)
level 3-4 global: resolution 9km (SeaWifs) ; 4 and 9 km (MODIS/ACQUA only)
Products : Nlwr i , CHLa, K490 (att) – Tau-XX , angstrom + Cloud-Angle-Continent mask
«experimentals products » : CDOM Color Dissolved Organic Matter (yellow substance)
CWE clear water epsillon, CFI/FLH : chlorophylle fluorescence, DCC: cocolyth concentration
PAR : Photosynthetically Available Radiation , PP : Primary Production
daily (1 orbit) and synthesis basis : 3 days, weekly, monthly
SST
1Day
1Day
3Days
1Week
1Week
1Month
1Month
simultaneous SST/CHLa MODIS 4km
NASA/GSFC
(http://oceancolor.gsfc.nasa.gov)
CHLa
CHLA MODIS 4km 1W – 1M south HUMbold
(http://oceanwatch.pifsc.noaa.gov/
« Wind » (1)
Micro-Wave measurement ( MW)
- passive (radiometer) : simultaneous mesures (Tb) in several MW channels
only speed modulus ( inversion brightness temperature and experimental adjustment )
Sensor/vector : DMSP/SSM-I, TRMM/TMI, ACQUA/AMSR-E
- active (scatterometer) backscatter measurement of surface ruguosity
radar wave emitted and reflected by the surface (stress)
wind speed and direction (component)
Sensor/vector : Seawind/QuickSCAT , ERS1-2/AMI ,
2 pass/days (ASC/DES) level3 (instantaneaous )
Operationnal : day/night , under clouds (except précipitation)
Limitations : heavy rain - coast (continent, island ) ~ 100 km
daily « gridded » products by par optimal interpolation in space and time
QS3D : ssmi.com - MWF : Mean Wind Fields CERSAT /IFREMER
resolution 0.25/0.5/1.0 degres , daily and weekly, montly synthesis (means)
Parameters : meridionnal –zonal components , stress , errors , curl/rotationnal
« Wind » (2)
Only one provider NASA/JPL ( QuickScat )
End of ERS1-2 (2001) et failing of NSCAT/ADEOS
Projet METOP/ASCAT (2006 ) ---------------------------
double swath scaterometer
archiving – diffusion centers
PO-DAAC
CERSAT/IFREMER http://www.ifremer.fr/cersat
SAF-OI/KNMI – EUMETSAT
ssmi.com : passive ( SSM-I , TMI )
active (QS)
Products « swath » Level 2a/b et « gridded »L3/L4 (MWF)
colocated ( buoys )
- Precipitation and Ice detection
- Ambiguity direction
- Monitoring ( unique and multi instruments )
three antennas:
a fore-beam - mid-beam - aft-beam
In its nominal operation, the instrument will
yield wind vector measurements in 50 km
resolution cells. It will be capable of
measuring wind speeds in the range 4 –
24 m/s with an accuracy of 2 m/s or 10%
and wind direction in the range 0 – 360° with
an accuracy of 20°. On an experimental
basis, the instrument will provide
measurements at an enhanced resolution of
around 25 km.
ASC/DEC daily swath and orbit (benguela)
Module vitesse QS – CERSAT/IFREMER – daily
Module vitesse – AMSR-E ssmi.com - daily
Direction-stress QS CERSAT/IFREMER – monthly
Daily , Weekly and Monthly « gridded » products
« altimetry» (1)
L'altimétrie spatiale est une technique permettant de mesurer des hauteurs par satellite. Elle utilise le
temps mis par un faisceau radar pour faire l'aller-retour satellite-surface, associé à une localisation
précise du satellite, pour effectuer ses mesures.
Principe de l'altimétrie
L'altimètre émet une onde radar et l'analyse
après réflexion sur la surface. La hauteur de
mer est égale à la différence entre la
distance satellite - surface (déduite du
temps mis par l'onde pour faire l'aller-retour)
et la position du satellite par rapport à une
surface de référence arbitraire (l'ellipsoïde
de référence).
Des systèmes de localisation comme Doris
permettent une précision extrême sur cette
position du satellite en orbite. Il faut aussi
tenir compte de la moindre perturbation
subie par l'onde radar. La mesure de ces
perturbations (par des instruments annexes,
ou par l'utilisation de plusieurs fréquences),
ou leur estimation par des modèles, permet
de corriger la mesure altimétrique.
distribution , archivage : AVISO-ALTIMETRIE (http://www.jason.oceanobs.com/)
« altimetry » (2)
Satellite (polar) : Jason-1 , Topex/poseidon, ENVISAT , GFO (Geosat follow-on)
Produits « gridded » level 4 (et +)
MSLA : (Map Sea level Anomaly with climatologie 7 years climatology
résolution 1/3 degres NRT et DT , mono et multi-missions
SLA : along the swath – multi satellite
corSSH : monomission , le long de la trace
wind – wave : MSWH-MWind swath and gridded (1 deg)
surface currents : derived from anomalies
Research of the best spatio-temporal sampling for phenomenas monitoring (ocean dynamic)
Altimetrics height cover by swath in north-east Atlantic obtained by T/P, ERS-2 et GFO, on 10 , 7 and 3 days observations
we observed en gap of 200 km and more with 3 days synthesis
Combination of all missions allow a better cover
DISPONIBILITY ( US025 – IRD Bretagne ) – Global cover
SST PFV4 – 9 km – monthly /week : 1985/01 - 2003/07
month climatologies 85-03 et anomalies
SST PFV5 – 4 km – day/8 days/month : 1985/01 – 2006/12
monthly synthesis : mean / min / max / std / number of clear sky pixel (nbp)
SST MODIS – 4 km – daily/week/month : 2002/07 – present (*)
SST SAFO – 10 km – 2/day - : 2004/07 – present (zone ATL) (*) exp : 1H resolution
SST METOP – 10 km – 2:day – 2007/10 – present (*) - exp : 1 km by swath part
SST TMI – ¼ deg (25 km) – daily (3d) / week / month : 1998/01 – present (*) AMSR-E (2002/07
CHLA SeaWIFS : 9 km – 8 days / month : 1997/09 – 2006/12
CHLA MODIS : 4 km – jour / (3days) / 8 days / month : 2002/07 – present (*)
MWF QuickScat (QS) ½ deg - day/week/month : 2000/05 - present
MWF ERS ½ deg week/month from 1992 - 2000 : 1deg )
QS3D
¼ deg – weekly/daily : 1999/05 – present (*)
QS1D
daily Ascending-Descending (*)
MSLA-H (UV) « merged » 1/3 deg - 7 days : 1992/10 – present
(*) : daily acces for Near Real Time ( delay : 1 – 2 days )
PROCESSING
- Decoding the « raw » products (format, resolution, coverage)
temporal (begin-end) and spatial extraction by zones
- « 3D matrix » datas organized in
{ TIM – LAT – LON - PARi }
analysis et « processing » of scientific « image data »
internal format (matlab) et netCDF for export use
- multi-media « image representation »
for publication (WEB)
cartography – scale phenomena – text - animation
- developping an « generic » analysis data interactive tools
viewing value « parameter »
lat-lon (carto) , plot pixel val- tim
plot space – time diagram ( hovmoller)
- processing
climatologies (means ) – anomalies
synthesis : temporal agregation by N days fixed or slick period
analysis : EOF ,..
PROCESSING .. In projects
WEB site consultation .. In progress ???
Synthetics indexes
Automatic Near Real Time Daily extraction
SST : TMI / SAFO / MODIS
CHLA : MODIS (3D)
WIND : QS (3D)
transfert – decoding – processing – consultation
ex : monitoring oceanographic campaign EGEE in Guinea Gulf 2005 06-09
daily data on upwelling zones
neCDF writing format
netCDF Generic tool using : ferret , ncview , nco
Specific developping software tools for « users » IDL/matlab
ZONES DEFINITION (not fixed)
Regionals : CANaries , BENguela , HUMbold , MOZambique, (CORail),..
Locals : MARoc, SENégal, SBE (South Benguela), PERou,.. And EGE
1rst Exemples :
SeaWIFS 8Days
Log CHLa sur zones UPwelling
screen copy interactif analysis tools
Cartographie et plot « time »
Coupe espace – temps
SST PFV5 ( 4km)
Quality Analysis
Ind=0 
brighness Temp
Ind=4  OK (!)
Ind=7  sévère
Monthly climatologies et anomalies - SST PFV4
PERou
daily
MODIS (4km)
Vs
SAFO ( 10 km)
CANaries
daily
MODIS (4km)
Vs
SAFO (10 km)
Daily South BEnguela
Daily SENégal
PFV5 (4km) Vs
MODIS (4km)
vs SAFO
MODIS (4km)
(10 km)
MONTHLY
OBSERVATIONS
BENguela
2004/07
MODIS
SAFO
TMI
AVHRR (PF)
DAILY
OBS.
CANaries
2004
12/25
AVHRR
SAFO
TMI
MODIS
SST SAFO (10 km) : daily 01-06 / 02 / 2005
BENguela
CHLa SeaWIFS
clim
8D (2004/12/345-352)
CHLa MODIS
month 2004/12
Historical and « operationnal NRT » Level 3 (and +) available :
( free of charge for scientific use : NASA/NOAA/EUMETSAT(?),.. =
SST : various choices of spatio-temporal resolution
- DT : 9km-4km /mois ( 1985 – 2003)
4km / day ( AVHRR : PFV4/5 – MODIS ) + synthesis (1985/2000 – 2004)
- RT : direct read-out and preprocessing : AVHRR – MODIS 1km
internet : MODIS / day 4 km - SAFO ( MSG+GOES) 10 – 5 km ( 2004/07)
AVHRR/METOP 10km (1 km) ( 2007-10) - TMI ( AMSR-E) : 25 km (1998 )
CHLa (others parameters ?)
- DT : 9 km SeaWIFS ( 1998-present) / month – 8D - MODIS 4 km ( day, 3D, 8D, mm) 2002/07
- NRT : direct read-out / internet + processing MODIS 1km
global 4km / day (07/2002)
« wind » : speed modulus and direction (stress) component (CERSAT/IFREMER)
-DT (5-8 days ! ) QuickScat 01/2000 - « gridded » product daily – ½ deg
- NRT daily swath (ASC/DES) or 3D composite (REMSS)
MSLA : DT / NRT
AVISO altimétrie « merged » 1/3 deg - 1992 - present
CONCLUSIONS
- Sources complementarities
résolution – history – scientific monitoring
archiving specific center by instrument distribution
par order of increasing complexity : SST, color, wind, altimétry
emergence of specialized center for thematics using
cf : Coast Watch (NOAA/US) operationnal oceanography
- SST (CHL) : local (pre)processing high resolution (1 km – polar satellite ) from :
RT acquisition (level0) : receiving station ( tracking antenna,..)
NRT internet transfert (level 2) if high speed telecomunication link
NRT level 3-4 by internet
-Opérationnality ? Utilisation (scientific, commercial)
- Satellite SST
Polar orbiter : SST IRT maximal resolution but (very) low spatial cover due to Clouds
Micro-Wave (and atmosphère ) for global-régional scale
Geosynchronous : SST with high declouding capability - MSG/GOES 1H – 5 km
SATELLITE OBSERVATION DURING EGEE3
1 During cruise on area « EGE » by mail ( 3 vac/day)
- SSTs : TMI (MW) and SAFO (IR) .. Pb on SSTSAFO since 05/24 …oops !!
SST SEVIRI 3H composite day ( 01 – 13 H )
- CHLA Modis (3 days synthesis)
- Wind : QuickScat 3D
MSG viewing in VIS, MIR, TIR and WV channel
(satmos.meteo.fr : CNRS/M-F)
Clouds identifications, meteorological situations,..
Others : some Seawifs / MODIS «true color »
2 - All historical data will be archived
Previous presented .. SST , SSR , wind, CHL , .. « altimetry »
-DLI / SSI : Downward Longwave Irradiance / Solar Surface Irrdiance from MSG
- SSM/I orbits (latent and sensible heat flux )
SST daily product 2005/06/21 -
M-F CMS Lannion
AMSR/E – SEVIRI/MSG – AVHRR/GAC – AATSR
Daily Atlantic Products
SSTs : TMI – MODIS –SAFO
CHL - wind
SSI – DLI
On disk « MISSION \Satellites»
-SSSTTMI - SSTSAFO – SSTSEVIRI - CHLMODIS – WINDQS
MSG IRT/MIR/VIS/WV
-daily directory : YYYY-MM-DD
-product :
-monthly : historical
-EGEE1 : 2005 05/24 - 07/03
-Daily SST TMI - Animation
- poster AMMA DAKAR 200/12
-NAAPS : » Navy » Aerosols Products ( seawifs / modis ‘true » color » images)
DAILY
: SSTTMI –SSTSAFO – wind – CHL
PRODUCT
SSTTMI
05/16
05/20
05/23
05/26
05/30
06/02
PRODUCT
SST SEVIRI
3H composite
11/05 13:00
12/06 01:00
12/06 13:00
14:06 01:00
DAILY
MSG
12:00
VIS
MIR
IRT
WV
DAILY
MSG
IRT
00:00
06:00
12:00
18:00
« COLOR COMPOSITION » VIS/IRT
VIS : bright / dark
Clouds : hight / medium / low – Dust
IRT : hot / cold
Sea – Continent (forest, desert,..)
MODIS
‘true color »
2006/06/01