Difference between revisions of "Example CF-NetCDF for Satellite"
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(Created page with "A Real life example how to download and store satellite data.") |
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| + | Back to [[WCS Access to netCDF Files]] | ||
| + | |||
A Real life example how to download and store satellite data. | A Real life example how to download and store satellite data. | ||
| + | |||
| + | == TOMS satellite == | ||
| + | |||
| + | ftp, url templates, file format | ||
| + | |||
| + | == Creating Empty CF-NetCDF File == | ||
| + | |||
| + | === NCML === | ||
| + | |||
| + | <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2"> | ||
| + | <explicit /> | ||
| + | <attribute name="title" type="string" value="NASA TOMS Project" /> | ||
| + | <attribute name="comment" type="string" value="NASA Total Ozone Mapping Spectrometer Project" /> | ||
| + | <attribute name="Conventions" type="string" value="CF-1.0" /> | ||
| + | <dimension name="time" length="0" isUnlimited="true" /> | ||
| + | <dimension name="lat" length="180" /> | ||
| + | <dimension name="lon" length="288" /> | ||
| + | <variable name="time" type="int" shape="time"> | ||
| + | <attribute name="standard_name" type="string" value="time" /> | ||
| + | <attribute name="long_name" type="string" value="time" /> | ||
| + | <attribute name="units" type="string" value="days since 1979-01-01" /> | ||
| + | <attribute name="axis" type="string" value="T" /> | ||
| + | </variable> | ||
| + | <variable name="lat" type="double" shape="lat"> | ||
| + | <attribute name="standard_name" type="string" value="latitude" /> | ||
| + | <attribute name="long_name" type="string" value="latitude" /> | ||
| + | <attribute name="units" type="string" value="degrees_north" /> | ||
| + | <attribute name="axis" type="string" value="Y" /> | ||
| + | <values start="-89.5" increment="1" /> | ||
| + | </variable> | ||
| + | <variable name="lon" type="double" shape="lon"> | ||
| + | <attribute name="standard_name" type="string" value="longitude" /> | ||
| + | <attribute name="long_name" type="string" value="longitude" /> | ||
| + | <attribute name="units" type="string" value="degrees_east" /> | ||
| + | <attribute name="axis" type="string" value="X" /> | ||
| + | <values start="-179.375" increment="1.25" /> | ||
| + | </variable> | ||
| + | <variable name="AI" type="float" shape="time lat lon"> | ||
| + | <attribute name="long_name" type="string" value="Aerosol Index" /> | ||
| + | <attribute name="units" type="string" value="fraction" /> | ||
| + | <attribute name="_FillValue" type="float" value="NaN" /> | ||
| + | <attribute name="missing_value" type="float" value="NaN" /> | ||
| + | </variable> | ||
| + | </netcdf> | ||
| + | |||
| + | === Create Script ==== | ||
| + | |||
| + | == Download Procedure == | ||
| + | |||
| + | === Make URL from the Template === | ||
| + | |||
| + | === Download the Text File === | ||
| + | |||
| + | === Compile the Text File into an rectangular array === | ||
| + | |||
| + | === Append the time slice === | ||
Revision as of 07:29, July 6, 2011
Back to WCS Access to netCDF Files
A Real life example how to download and store satellite data.
TOMS satellite
ftp, url templates, file format
Creating Empty CF-NetCDF File
NCML
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2"> <explicit /> <attribute name="title" type="string" value="NASA TOMS Project" /> <attribute name="comment" type="string" value="NASA Total Ozone Mapping Spectrometer Project" /> <attribute name="Conventions" type="string" value="CF-1.0" /> <dimension name="time" length="0" isUnlimited="true" /> <dimension name="lat" length="180" /> <dimension name="lon" length="288" /> <variable name="time" type="int" shape="time"> <attribute name="standard_name" type="string" value="time" /> <attribute name="long_name" type="string" value="time" /> <attribute name="units" type="string" value="days since 1979-01-01" /> <attribute name="axis" type="string" value="T" /> </variable> <variable name="lat" type="double" shape="lat"> <attribute name="standard_name" type="string" value="latitude" /> <attribute name="long_name" type="string" value="latitude" /> <attribute name="units" type="string" value="degrees_north" /> <attribute name="axis" type="string" value="Y" /> <values start="-89.5" increment="1" /> </variable> <variable name="lon" type="double" shape="lon"> <attribute name="standard_name" type="string" value="longitude" /> <attribute name="long_name" type="string" value="longitude" /> <attribute name="units" type="string" value="degrees_east" /> <attribute name="axis" type="string" value="X" /> <values start="-179.375" increment="1.25" /> </variable> <variable name="AI" type="float" shape="time lat lon"> <attribute name="long_name" type="string" value="Aerosol Index" /> <attribute name="units" type="string" value="fraction" /> <attribute name="_FillValue" type="float" value="NaN" /> <attribute name="missing_value" type="float" value="NaN" /> </variable> </netcdf>
