[GRASS-user] EPSG 32633 and spatial resolution for hourly LST product from Copernicus

Tue Sep 25 06:19:25 PDT 2018

On Tue, Sep 25, 2018 at 1:25 PM Veronica Andreo <veroandreo at gmail.com>
wrote:
>
> AFAIU, plate carree (lat long grid, no meters) is deprecated, and you
should use latlong instead. I had a similar issue with modis ocean color
products.
>
> Do you at least get the same number of row and columns that is described
by gdalinfo when you import?

... by gdalinfo on one of the subdatasets, not on the netcdf file directly,
e.g.

gdalinfo NETCDF:"g2_BIOPAR_LST_201606220100_GLOBE_GEO_V1.2.nc":LST

note that the resolution you get (0.04464286) is close to what is reported
in the metadata:

NC_GLOBAL#parent_identifier=urn:cgls:global:lst_v1_0.045degree

assuming units are degrees.

Markus M

>
> HTH,
> Vero
>
>
> El mar., 25 sep. 2018 7:25, Nikos Alexandris <nik at nikosalexandris.net>
escribió:
>>
>> The hourly 5km LST product from Copernicus, as per the product user
manual
>> (
https://land.copernicus.eu/global/sites/cgls.vito.be/files/products/GIOGL1_PUM_LST-I1.40.pdf
)
>>
>> "is displayed in a regular latitude/longitude grid (plate carrée) with
>> the ellipsoid WGS 1984 (Terrestrial radius=6378km). This coordinate
>> reference system corresponds to EPSG code 32663. The resolution of the
>> grid is 5/112° (approximately 0.045°)."
>>
>>
>> I imported a map (netCDF) and set the region to match it.
>> If '32633' unit is 'meter', any ideas on to do with the reported:
>>
>> nsres:      0.04464286
>> ewres:      0.04464286
>>
>> which is, obviously, not meters?
>> Is there something "hidden" in the netCDF file(s)?
>>
>>
>> Here is a `gdalinfo g2_BIOPAR_LST_201606220100_GLOBE_GEO_V1.2.nc`:
>> ```
>> Driver: netCDF/Network Common Data Format
>> Files: g2_BIOPAR_LST_201606220100_GLOBE_GEO_V1.2.nc
>> Size is 512, 512
>> Coordinate System is `'
>> Metadata:
>>   NC_GLOBAL#algorithm_version=GOES13-LST_v3.40, MSG3-LST_v7.14.0,
HIMAWARI8-LST_v3.50, DataFusion_v5.2
>>   NC_GLOBAL#archive_facility=IPMA
>>   NC_GLOBAL#comment=Land Surface Temperature (LST) is the radiative skin
temperature over land. LST plays
>> an important role in the physics of land surface as it is involved in
the processes of energy and water ex
>> change with the atmosphere. LST is useful for the scientific community,
namely for those dealing with mete
>> orological and climate models. Accurate values of LST are also of
special interest in a wide range of area
>> s related to land surface processes, including meteorology, hydrology,
agrometeorology, climatology and en
>> vironmental studies.
>>   NC_GLOBAL#contacts=Principal investigator (Researcher):
isabel.trigo at ipma.pt; Instituto Português do Mar
>>  e da Atmosfera (IPMA); Rua C ao Aeroporto; Lisbon; 1749-077; Portugal
(PT); IPMA website; http://www.ipma
>> .pt
>> Originator (IPMA GIO-Global Land Help Desk): sandra.coelho at ipma.pt;
Instituto Português do Mar e da Atmosf
>> era (IPMA); Rua C ao Aeroporto; Lisbon; 1749-077; Portugal (PT); IPMA
website; http://www.ipma.pt
>> Point of contact (GIO-Global Land Help Desk): helpdesk at vgt.vito.be;
Flemish Institute for Technological Research (VITO); Boeretang 200; Mol;
2400; Belgium (BE); VITO website; http://land.copernicus.eu/global/
>> Owner: ENTR-COPERNICUS-ASSETS at ec.europa.eu; European Commission
Directorate-General for Enterprise and Industry (EC-DGEI); Avenue
d'Auderghem 45; Brussels; 1049; Belgium (BE); EC-DGEI website;
http://ec.europa.eu/enterprise/
>> Custodian (Responsible): copernicuslandproducts at jrc.ec.europa.eu;
European Commission Directorate-General Joint Research Center (JRC); Via
E.Fermi, 249; Ispra; 21027; Italy (IT); JRC website;
http://ies.jrc.ec.europa.eu
>>   NC_GLOBAL#Conventions=CF-1.6
>>   NC_GLOBAL#credit=LST products are generated by the land service of
Copernicus, the Earth Observation programme of the European Commission. The
LST algorithm, originally developed in the framework of the FP7/Geoland2,
is generated from MTSAT/HIMAWARI and GOES data, respectively owned by JMA
and NOAA, and combined with the LST product from MSG under copyright
EUMETSAT, produced by LSA-SAF.
>>   NC_GLOBAL#date_created=2016-06-22T03:22:01Z
>>   NC_GLOBAL#gcmd_keywords=SURFACE TEMPERATURE
>>   NC_GLOBAL#gemet_keywords=solar radiation
>>   NC_GLOBAL#history=2016-06-22T03:22:01Z - Product generation;
>>
NC_GLOBAL#identifier=urn:cgls:global:lst_v1_0.045degree:LST_201606220100_GLOBE_GEO_V1.2
>>   NC_GLOBAL#inspire_theme=Orthoimagery
>>   NC_GLOBAL#institution=IPMA
>>   NC_GLOBAL#iso19115_topic_categories=climatologyMeteorologyAtmosphere,
imageryBaseMapsEarthCover
>>   NC_GLOBAL#long_name=Land Surface Temperature
>>   NC_GLOBAL#name=LST
>>   NC_GLOBAL#orbit_type=GEO
>>   NC_GLOBAL#other_keywords=Global
>>   NC_GLOBAL#parent_identifier=urn:cgls:global:lst_v1_0.045degree
>>   NC_GLOBAL#platform=GOES13, MSG3, HIMAWARI8
>>   NC_GLOBAL#processing_level=L4
>>   NC_GLOBAL#processing_mode=Near Real Time
>>   NC_GLOBAL#product_version=V1.2
>>   NC_GLOBAL#purpose=This product is first designed to fit the
requirements of the Global Land component of Land Service of
GMES-Copernicus. It can be also useful for all applications related to the
environment monitoring.
>>   NC_GLOBAL#references=Product User Manual:
http://land.copernicus.eu/global/sites/default/files/products/GIOGL1_PUM_LST_I1.10.pdf
>> Validation Report:
http://land.copernicus.eu/global/sites/default/files/products/GIOGL1_VR_LST_I2.10.pdf
>> Product page: http://land.copernicus.eu/global/products/lst
>>   NC_GLOBAL#sensor=IMAG, SEVI, AHI
>>   NC_GLOBAL#source=Data was derived from satellite imagery.
>>   NC_GLOBAL#time_coverage_end=2016-06-22T01:30:00Z
>>   NC_GLOBAL#time_coverage_start=2016-06-22T00:30:00Z
>>   NC_GLOBAL#title=Global Land Surface Temperature for
2016-06-22T01:00:00Z
>> Subdatasets:
>>   SUBDATASET_1_NAME=NETCDF:"g2_BIOPAR_LST_201606220100_GLOBE_GEO_V1.2.nc
":ERRORBAR_LST
>>   SUBDATASET_1_DESC=[1x3584x8064] surface_temperature standard_error
(16-bit integer)
>>   SUBDATASET_2_NAME=NETCDF:"g2_BIOPAR_LST_201606220100_GLOBE_GEO_V1.2.nc
":LST
>>   SUBDATASET_2_DESC=[1x3584x8064] surface_temperature (16-bit integer)
>>   SUBDATASET_3_NAME=NETCDF:"g2_BIOPAR_LST_201606220100_GLOBE_GEO_V1.2.nc
":PERCENT_PROC_PIXELS
>>   SUBDATASET_3_DESC=[1x3584x8064] PERCENT_PROC_PIXELS (16-bit integer)
>>   SUBDATASET_4_NAME=NETCDF:"g2_BIOPAR_LST_201606220100_GLOBE_GEO_V1.2.nc
":Q_FLAGS
>>   SUBDATASET_4_DESC=[1x3584x8064] Q_FLAGS (16-bit integer)
>>   SUBDATASET_5_NAME=NETCDF:"g2_BIOPAR_LST_201606220100_GLOBE_GEO_V1.2.nc
":TIME_DELTA
>>   SUBDATASET_5_DESC=[1x3584x8064] TIME_DELTA (16-bit integer)
>> Corner Coordinates:
>> Upper Left  (    0.0,    0.0)
>> Lower Left  (    0.0,  512.0)
>> Upper Right (  512.0,    0.0)
>> Lower Right (  512.0,  512.0)
>> Center      (  256.0,  256.0)
>> ```
>>
>> Nikos
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>
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