Anhang -Beispielsammlung für Koordinatenangaben
Beispiel A1
In diesem Beispiel hat die variable WaterLevel die dimensions time, latitude und longitude. Dazu existieren die coordinate variables time, longitude und latitude, deren names mit den dimension names identisch sind. Also hat man ein 3-dim Gitter bzw. eine Zeitreihe von Flächen.
dimensions:
time = UNLIMITED ; // (177 currently)
longitude = 69 ;
latitude = 64 ;
variables:
double time(time) ;
time:units = "days since 1970-01-01 00:00:00" ;
time:standard_name = "time" ;
double longitude(longitude) ;
longitude:units = "degrees_east" ;
longitude:standard_name = "longitude" ;
double latitude(latitude) ;
latitude:units = "degrees_north" ;
latitude:standard_name = "latitude" ;
double WaterLevel(time, latitude, longitude) ;
WaterLevel:units = "m" ;
WaterLevel:standard_name="sea_surface_height_above_sea_level"
Beispiel A2
Der Datensatz beinhaltet eine Trajektorie, also z.B. Glider-Daten.
dimensions:
time = UNLIMITED ; // (177 currently)
variables:
double time(time) ;
time:units = "days since 1970-01-01 00:00:00" ;
time:standard_name = "time" ;
double longitude(time) ;
longitude:units = "degrees_east" ;
longitude:standard_name = "longitude" ;
double latitude(time) ;
latitude:units = "degrees_north" ;
latitude:standard_name = "latitude" ;
double Pressure (time) ;
Pressure:units = "dbar" ;
Pressure:positive = "down"
Pressure:standard_name = "sea_water_pressure" ;
double Salinity(time) ;
Salinity:units = "1" ;
Salinity:standard_name = "sea_water_salinity" ;
Beispiel A3
Beispiel für Distributionstatement für COSYNA.
COSYNA provides free public access to observational and model data. For near-real time data only limited quality control is performed. Accessible data are subject to change due to delayed processing and quality control. For all COSYNA data no warranty is made, expressed or implied, regarding the accuracy or validity of the data, or regarding the suitability of the data for any particular application. Guidelines for data use and publication: the right of priority use is reserved. If you intend to use COSYNA data please consult the COSYNA coordinator. The following conditions apply to any use of COSYNA data. The user agrees to acknowledge the provision of the data referring to the data originator and to include the following statement: "The data were provided by the COSYNA system operated by Helmholtz-Zentrum hereon GmbH"; to offer co-authorship to the data originator(s) if the provided COSYNA data are a principal component of the publication; not to use any data commercially without prior approval of the data owner(s). In addition, the data policies of the respective third party institution(s) must be followed in regard to any type of third party data provided by COSYNA.
Example A4
Output aus COSMO-CLM.
dimensions:
time = UNLIMITED ; // (2919 currently)
rlat = 170 ;
rlon = 148 ;
nb2 = 2 ;
variables:
float TOT_PREC(time, rlat, rlon) ;
TOT_PREC:standard_name = "precipitation_amount" ;
TOT_PREC:long_name = "total precipitation amount" ;
TOT_PREC:units = "kg m-2" ;
TOT_PREC:grid_mapping = "rotated_pole" ;
TOT_PREC:coordinates = "lon lat" ;
TOT_PREC:cell_methods = "time: sum" ;
float lat(rlat, rlon) ;
lat:standard_name = "latitude" ;
lat:long_name = "latitude" ;
lat:units = "degrees_north" ;
float lon(rlat, rlon) ;
lon:standard_name = "longitude" ;
lon:long_name = "longitude" ;
lon:units = "degrees_east" ;
float rlat(rlat) ;
rlat:standard_name = "grid_latitude" ;
rlat:long_name = "rotated latitude" ;
rlat:units = "degrees" ;
float rlon(rlon) ;
rlon:standard_name = "grid_longitude" ;
rlon:long_name = "rotated longitude" ;
rlon:units = "degrees" ;
char rotated_pole ;
rotated_pole:long_name = "coordinates of the rotated North Pole" ;
rotated_pole:grid_mapping_name = "rotated_latitude_longitude" ;
rotated_pole:grid_north_pole_latitude = 54.2f ;
rotated_pole:grid_north_pole_longitude = -57.7f ;
double time(time) ;
time:standard_name = "time" ;
time:long_name = "time" ;
time:units = "seconds since 1948-01-01 00:00:00" ;
time:calendar = "proleptic_gregorian" ;
time:bounds = "time_bnds" ;
double time_bnds(time, nb2) ;
time_bnds:units = "seconds since 1948-01-01 00:00:00" ;
// global attributes:
:title = "COSMO-CLM simulation for Bohai, Yellow and East China Sea" ;
:institution = "Helmholtz-Zentrum Hereon, Institute of Coastal Systems, Germany" ;
:source = "cosmo_100614_4.14_clm2 int2lm_120824_1.20_clm1" ;
:project_id = "-" ;
:experiment_id = "BH_LONG_ERAin" ;
:realization = 1 ;
:Conventions = "CF-1.6" ;
:conventionsURL = "http://cfconventions.org/" ;
:contact = "http://coastmod.hereon.de" ;
:references = "doi:10.1002/2015JD024177 and http://www.clm-community.eu/" ;
:creation_date = "2013-09-13T18:45:45" ;
:originator = "Delei Li" ;
:crs = "WGS84" ;
:geospatial_lon_min = 117.f ;
:geospatial_lat_min = 30.7f ;
:geospatial_lat_max = 41.3f ;
:geospatial_lon_max = 128.f ;
Example A5
netcdf DWD_Radiosondes_05839.20080101_20081231 {
dimensions:
obs = UNLIMITED ; // (957166 currently)
profile = 774 ;
variables:
float profile(profile) ;
profile:cf_role = "profile_id" ;
int parentIndex(obs) ;
parentIndex:long_name = "index of profile" ;
parentIndex:instance_dimension = "profile" ;
double time(obs) ;
time:standard_name = "time" ;
time:units = "hours since 1970-01-01 00:00:00" ;
float lat(profile) ;
lat:standard_name = "latitude" ;
lat:long_name = "latitude" ;
lat:units = "degree_north" ;
float lon(profile) ;
lon:standard_name = "longitude" ;
lon:long_name = "longitude" ;
lon:units = "degree_east" ;
float alt(profile) ;
alt:standard_name = "altitude" ;
alt:long_name = "height above geoid" ;
alt:units = "m" ;
alt:coordinates = "lon lat" ;
float PS(profile) ;
PS:standard_name = "surface_air_pressure" ;
PS:long_name = "ground air pressure" ;
PS:units = "hPa" ;
PS:coordinates = "startTime lon lat" ;
PS:_FillValue = -1.e+20f ;
float T_2M(profile) ;
T_2M:standard_name = "air_temperature" ;
T_2M:long_name = "ground air temperature" ;
T_2M:units = "degree_C" ;
T_2M:coordinates = "startTime lon lat" ;
T_2M:_FillValue = -1.e+20f ;
float RELHUM_2M(profile) ;
RELHUM_2M:standard_name = "relative_humidity" ;
RELHUM_2M:long_name = "ground relative humidity" ;
RELHUM_2M:units = "%" ;
RELHUM_2M:coordinates = "startTime lon lat" ;
RELHUM_2M:_FillValue = -1.e+20f ;
float reportingTime(profile) ;
reportingTime:standard_name = "time" ;
reportingTime:long_name = "reporting time" ;
reportingTime:units = "hours since 1970-01-01 00:00:00" ;
reportingTime:_FillValue = -1.e+20f ;
float startTime(profile) ;
startTime:standard_name = "time" ;
startTime:long_name = "start of sounding" ;
startTime:units = "hours since 1970-01-01 00:00:00" ;
startTime:_FillValue = -1.e+20f ;
float CAPE(profile) ;
CAPE:standard_name = "atmosphere_convective_available_potential_energy" ;
CAPE:long_name = "convective available potential energy" ;
CAPE:units = "J kg-1" ;
CAPE:coordinates = "reportingTime lon lat" ;
CAPE:_FillValue = -1.e+20f ;
float ae_lat(obs) ;
ae_lat:standard_name = "latitude" ;
ae_lat:long_name = "sounding latitude" ;
ae_lat:units = "degree_north" ;
ae_lat:coordinates = "time" ;
ae_lat:_FillValue = -1.e+20f ;
float ae_lon(obs) ;
ae_lon:standard_name = "longitude" ;
ae_lon:long_name = "sounding longitude" ;
ae_lon:units = "degree_east" ;
ae_lon:coordinates = "time" ;
ae_lon:_FillValue = -1.e+20f ;
float FIH(obs) ;
FIH:standard_name = "geopotential_height" ;
FIH:long_name = "geopotential height" ;
FIH:units = "m" ;
FIH:coordinates = "time ae_lon ae_lat" ;
FIH:_FillValue = -1.e+20f ;
float P(obs) ;
P:standard_name = "air_pressure" ;
P:long_name = "air pressure" ;
P:units = "hPa" ;
P:coordinates = "time ae_lon ae_lat" ;
P:_FillValue = -1.e+20f ;
float T(obs) ;
T:standard_name = "air_temperature" ;
T:long_name = "air temperature" ;
T:units = "degree_C" ;
T:coordinates = "time ae_lon ae_lat FIH" ;
T:_FillValue = -1.e+20f ;
float RELHUM(obs) ;
RELHUM:standard_name = "relative_humidity" ;
RELHUM:long_name = "relative humidity" ;
RELHUM:units = "%" ;
RELHUM:coordinates = "time ae_lon ae_lat FIH" ;
RELHUM:_FillValue = -1.e+20f ;
float TD(obs) ;
TD:standard_name = "dew_point_temperature" ;
TD:long_name = "dew point temperature" ;
TD:units = "degree_C" ;
TD:coordinates = "time ae_lon ae_lat FIH" ;
TD:_FillValue = -1.e+20f ;
float WSS(obs) ;
WSS:standard_name = "wind_speed" ;
WSS:long_name = "wind speed" ;
WSS:units = "m s-1" ;
WSS:coordinates = "time ae_lon ae_lat FIH" ;
WSS:_FillValue = -1.e+20f ;
float WDIR(obs) ;
WDIR:standard_name = "wind_from_direction" ;
WDIR:long_name = "wind direction" ;
WDIR:units = "degree" ;
WDIR:coordinates = "time ae_lon ae_lat FIH" ;
WDIR:_FillValue = -1.e+20f ;
// global attributes:
:institution = "DWD" ;
:station = "Emden" ;
:station_id = "05839" ;
:source = "measurements: radiosonde ascents" ;
:instrument = "Radiosonde RS92-SGP" ;
:instrument_type = "MSGRT" ;
:featureType = "profile" ;
:Conventions = "CF-1.7" ;
:conventionsURL = "http://www.unidata.ucar.edu/packages/netcdf/conventions.html" ;
:download_site = "ftp://opendata.dwd.de/climate_environment/CDC/observations_germany/radiosondes/high_resolution/historical" ;
:licence = "Geodatennutzungsverordnung, GeoNutzV, ftp://opendata.dwd.de/climate_environment/CDC/Terms_of_use.pdf" ;
:creation_date = "transformation to netCDF:2019-11-08 13:52:52 +0100" ;
}