Le portail francophone de la géomatique

Conversion de NETCDF en GTiff - Projection

Bonjour,

Je rencontre des difficultés pour la lecture et la conversion de fichier Netcdf.
J'ai essayer de définir un SCR à la couche en fonction des métadonnées (EPSG : 6833) puis de la reprojeter en WGS84 (EPSG : 4326), mais il est impossible de la reprojeter.

Il semblerai qu'il y ai un soucis de géo réferencement.
J'ai deja essayé l'outil de conversion Gdal avec l'option -a_ullr ..... et -a_scr:EPSG=4326 mais au final les coordonnées ne colle pas avec une projection WGS84 4326.

Je ne suis pas expert en la matière donc j'ai peut être omis quelque chose.

Quelqu'un a-t-il déjà eu ce soucis ?

Merci d'avance.


Metadonnées :

lat#long_name=latitude
lat#units=degrees_north
lat#_FillValue=9.96921e+36
lon#long_name=longitude
lon#units=degrees_east
lon#_FillValue=9.96921e+36
NC_GLOBAL#absolute_orbit=0
NC_GLOBAL#abs_day_end=UTC=2015-11-30T23:59:59.000000
NC_GLOBAL#abs_day_start=UTC=2015-11-01T00:00:00.000000
NC_GLOBAL#abs_orbit_start=0
NC_GLOBAL#abs_orbit_stop=0
NC_GLOBAL#acquisition_station=Villafranca
NC_GLOBAL#ascending_flag=A
NC_GLOBAL#conventions=CF-1.4
NC_GLOBAL#creation_date=UTC=2015-12-07T20:53:25
NC_GLOBAL#cycle=0
NC_GLOBAL#datablock_file_format=netCDF
NC_GLOBAL#datablock_schema=DBL_SM_XXXX_MIR_CLF3MA_0003.schema.xml
NC_GLOBAL#date_time_vector_tai=TAI=2015-11-01T00:16:36.000000
NC_GLOBAL#date_time_vector_ut1=UT1=2015-11-01T00:16:00.411000
NC_GLOBAL#date_time_vector_utc=UTC=2015-11-01T00:16:00.000000
NC_GLOBAL#datum=+ellps = WGS84
NC_GLOBAL#earth_grid=EASE
NC_GLOBAL#ease_global=yes
NC_GLOBAL#ease_origin_lat=-83.517136
NC_GLOBAL#ease_origin_lon=-179.87032
NC_GLOBAL#ease_projection=cylindrical
NC_GLOBAL#ease_resolution=25
NC_GLOBAL#file_class=OPER
NC_GLOBAL#file_description=P3 File: monthly agregation
NC_GLOBAL#file_type=MIR_CLF3MA
NC_GLOBAL#grip_mapping=projection
NC_GLOBAL#hdr_reference=SMOS-CAT-IF-558-CNES
NC_GLOBAL#header_schema=HDR_SM_XXXX_MIR_CLF3MA_0001.xsd
NC_GLOBAL#history=none
NC_GLOBAL#hw_identifier=CATD
NC_GLOBAL#input_product_window_duration_days=30
NC_GLOBAL#institution=SMOS CATDS Processing Chain
NC_GLOBAL#leap_second=UTC=2000-01-01T00:00:00.000000
NC_GLOBAL#logical_proc_centre=CPD
NC_GLOBAL#long_at_anx=0
NC_GLOBAL#missing_p11p_input_files=0
NC_GLOBAL#mission=SMOS
NC_GLOBAL#netcdf_version_id=3.6.2
NC_GLOBAL#notes=File generated by the agregation processor
NC_GLOBAL#number_p11p_input_files=30
NC_GLOBAL#pct_availability_p11p_input_files=100
NC_GLOBAL#phase=0
NC_GLOBAL#polarisation_flag=F
NC_GLOBAL#precise_validity_start=UTC=2015-11-01T00:00:00.040000
NC_GLOBAL#precise_validity_stop=UTC=2015-11-30T23:59:59.040000
NC_GLOBAL#processing_centre=CATDS
NC_GLOBAL#product_confidence=NOMINAL
NC_GLOBAL#product_version=1.0
NC_GLOBAL#proj4text=+proj=cea +lon_0=0 +lat_ts=30 +x_0=0 +y_0=0 +ellps=WGS84 +units=m +no_defs
NC_GLOBAL#references=DDI CATDS - Ref. CAT-DDI-CT-00020-CG
NC_GLOBAL#relative_orbit=0
NC_GLOBAL#software=CATDS Operational Processor
NC_GLOBAL#software_version=300
NC_GLOBAL#source=CATDS Agregation SM
NC_GLOBAL#spatial_resolution_km=25
NC_GLOBAL#sph_descriptor=MIR_CLF3MA_SPH
NC_GLOBAL#srid=EPSG:6933
NC_GLOBAL#start_time=UTC=2015-11-01T00:00:00
NC_GLOBAL#start_time_anx_t=0
NC_GLOBAL#stop_time=UTC=2015-11-30T23:59:59
NC_GLOBAL#stop_time_anx_t=0
NC_GLOBAL#system=CATDS
NC_GLOBAL#temporal_resolution_days=-1
NC_GLOBAL#title=P3 Monthly Agregation File
NC_GLOBAL#utc_at_anx=UTC=2015-12-07T20:53:47.000000
NC_GLOBAL#vector_source=FP
NC_GLOBAL#x_position_m=-1142106.158
NC_GLOBAL#x_velocity_m_s=-15.22327
NC_GLOBAL#y_position_m=-2108795.603
NC_GLOBAL#y_velocity_m_s=7193.18238
NC_GLOBAL#z_position_m=-6731036.218
NC_GLOBAL#z_velocity_m_s=-2251.78326
Soil_Moisture#add_offset=0
Soil_Moisture#long_name=Retrieved soil moisture value
Soil_Moisture#scale_factor=3.05185094759971e-05
Soil_Moisture#units=m3.m-3
Soil_Moisture#_FillValue=-32768