Hi All,
Can someone please give me a hint on how to convert a NOAA satellite
swath NetCDF file to georeferenced Gtiff?
I found these:
https://trac.osgeo.org/gdal/ticket/4513
https://trac.osgeo.org/gdal/wiki/rfc4_geolocate
which implies it cannot be done directly with gdal yet.
Is there another way to this maybe using Python if gdal can't handle it?
-Steve W
$ gdalinfo --version
GDAL 1.11.3, released 2015/09/16
$ gdalinfo
NETCDF:20190304200000-OSPO-L2P_GHRSST-SSTsubskin-AVHRR18_G-ACSPO_V2.41-v02.0-fv01.0.nc:sea_surface_temperature
Warning 1: dimension #2 (ni) is not a Longitude/X dimension.
Warning 1: dimension #1 (nj) is not a Latitude/Y dimension.
Driver: netCDF/Network Common Data Format
Files:
20190304200000-OSPO-L2P_GHRSST-SSTsubskin-AVHRR18_G-ACSPO_V2.41-v02.0-fv01.0.nc
Size is 409, 7200
Coordinate System is `'
Metadata:
NC_GLOBAL#acknowledgment=Please acknowledge the use of these data
with the following statement: These data were provided by Group for High
Resolution Sea Surface Temperature (GHRSST) and the National Oceanic and
Atmospheric Administration (NOAA).
NC_GLOBAL#cdm_data_type=swath
NC_GLOBAL#comment=none
NC_GLOBAL#Conventions=CF-1.6
NC_GLOBAL#[email protected]
NC_GLOBAL#creator_name=Alex Ignatov
NC_GLOBAL#creator_url=http://www.star.nesdis.noaa.gov
NC_GLOBAL#date_created=20190304T214051Z
NC_GLOBAL#easternmost_longitude=180
NC_GLOBAL#file_quality_level=3
NC_GLOBAL#gds_version_id=02.0
NC_GLOBAL#geospatial_bounds=POLYGON(( 3.520 14.209, 176.005
20.284, -156.649 15.860, -23.493 9.963, 3.520 14.209))
NC_GLOBAL#geospatial_first_scanline_first_fov_lat=20.283962
NC_GLOBAL#geospatial_first_scanline_first_fov_lon=176.00494
NC_GLOBAL#geospatial_first_scanline_last_fov_lat=15.859998
NC_GLOBAL#geospatial_first_scanline_last_fov_lon=-156.64908
NC_GLOBAL#geospatial_last_scanline_first_fov_lat=14.20918
NC_GLOBAL#geospatial_last_scanline_first_fov_lon=3.5202866
NC_GLOBAL#geospatial_last_scanline_last_fov_lat=9.9625263
NC_GLOBAL#geospatial_last_scanline_last_fov_lon=-23.492666
NC_GLOBAL#geospatial_lat_resolution=0.0098999999
NC_GLOBAL#geospatial_lat_units=degrees_north
NC_GLOBAL#geospatial_lon_resolution=0.0098999999
NC_GLOBAL#geospatial_lon_units=degrees_east
NC_GLOBAL#history=Created by Advanced Clear-Sky Processor for Oceans
(ACSPO)-AVHRR at NOAA/NESDIS/OSPO.
NC_GLOBAL#id=AVHRR18_G-OSPO-L2P-v2.41
NC_GLOBAL#institution=NOAA/NESDIS/OSPO
NC_GLOBAL#keywords=Oceans > Ocean Temperature > Sea Surface Temperature
NC_GLOBAL#keywords_vocabulary=NASA Global Change Master Directory
(GCMD) Science Keywords
NC_GLOBAL#license=GHRSST protocol describes data use as free and open
NC_GLOBAL#Metadata_Conventions=Unidata Dataset Discovery v1.0
NC_GLOBAL#metadata_link=http://podaac.jpl.nasa.gov/ws/metadata/dataset/?format=iso&shortName=AVHRR18_G-OSPO-L2P-v2.41
NC_GLOBAL#naming_authority=org.ghrsst
NC_GLOBAL#netcdf_version_id=4.3.2 of Sep 24 2015 08:51:38 $
NC_GLOBAL#northernmost_latitude=20.283962
NC_GLOBAL#platform=NOAA-18
NC_GLOBAL#processing_level=L2P
NC_GLOBAL#product_version=2.41
NC_GLOBAL#project=Group for High Resolution Sea Surface Temperature
NC_GLOBAL#[email protected]
NC_GLOBAL#publisher_name=The GHRSST Project Office
NC_GLOBAL#publisher_url=http://www.ghrsst.org
NC_GLOBAL#references=Data convention: GHRSST Data Specification (GDS)
v2.0. Algorithms: ACSPO-AVHRR ATBD (NOAA/NESDIS/STAR)
NC_GLOBAL#sensor=AVHRR_GAC
NC_GLOBAL#source=AVHRR_L1b,CMC0.2deg-CMC-L4-GLOB-v2.0,NOAA-NCEP-GFS
NC_GLOBAL#southernmost_latitude=-90
NC_GLOBAL#spatial_resolution=1.1 km at nadir
NC_GLOBAL#standard_name_vocabulary=CF Standard Name Table (v26, 08
November 2013)
NC_GLOBAL#start_time=20190304T200000Z
NC_GLOBAL#stop_time=20190304T205959Z
NC_GLOBAL#summary=Sea surface temperature retrievals produced by
NOAA/NESDIS/OSPO office from AVHRR sensor
NC_GLOBAL#time_coverage_end=20190304T205959Z
NC_GLOBAL#time_coverage_start=20190304T200000Z
NC_GLOBAL#title=AVHRR L2P SST
NC_GLOBAL#uuid=2eaa373c-3ec6-11e9-ac15-f9642917379f
NC_GLOBAL#westernmost_longitude=-180
NETCDF_DIM_EXTRA={time}
NETCDF_DIM_time_DEF={1,4}
NETCDF_DIM_time_VALUES=1204574400
sea_surface_temperature#_FillValue=-32768
sea_surface_temperature#add_offset=273.14999
sea_surface_temperature#comment=SST obtained by regression with buoy
measurements
sea_surface_temperature#coordinates=lon lat
sea_surface_temperature#long_name=sea surface skin temperature
sea_surface_temperature#scale_factor=0.0099999998
sea_surface_temperature#source=NOAA
sea_surface_temperature#standard_name=sea_surface_skin_temperature
sea_surface_temperature#units=kelvin
sea_surface_temperature#valid_max=32767
sea_surface_temperature#valid_min=-32767
time#axis=T
time#calendar=Gregorian
time#comment=seconds since 1981-01-01 00:00:00
time#long_name=reference time of sst file
time#standard_name=time
time#units=seconds since 1981-01-01 00:00:00
Geolocation:
LINE_OFFSET=0
LINE_STEP=1
PIXEL_OFFSET=0
PIXEL_STEP=1
SRS=GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS
84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9108"]],AUTHORITY["EPSG","4326"]]
X_BAND=1
X_DATASET=NETCDF:"20190304200000-OSPO-L2P_GHRSST-SSTsubskin-AVHRR18_G-ACSPO_V2.41-v02.0-fv01.0.nc":lon
Y_BAND=1
Y_DATASET=NETCDF:"20190304200000-OSPO-L2P_GHRSST-SSTsubskin-AVHRR18_G-ACSPO_V2.41-v02.0-fv01.0.nc":lat
Corner Coordinates:
Upper Left ( 0.0, 0.0)
Lower Left ( 0.0, 7200.0)
Upper Right ( 409.0, 0.0)
Lower Right ( 409.0, 7200.0)
Center ( 204.5, 3600.0)
Band 1 Block=409x1024 Type=Int16, ColorInterp=Undefined
NoData Value=-32768
Offset: 273.149993896484, Scale:0.00999999977648258
Metadata:
_FillValue=-32768
add_offset=273.14999
comment=SST obtained by regression with buoy measurements
coordinates=lon lat
long_name=sea surface skin temperature
NETCDF_DIM_time=1204574400
NETCDF_VARNAME=sea_surface_temperature
scale_factor=0.0099999998
source=NOAA
standard_name=sea_surface_skin_temperature
units=kelvin
valid_max=32767
valid_min=-32767
---
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