Recipe: File naming conventions: Difference between revisions
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::::'''<span style="color:black">freq</span>_<span style="color:blue">dims</span>_<span style="color:red">group</span>_<span style="color:black">HV</span>''' | ::::'''<span style="color:black">freq</span>_<span style="color:blue">dims</span>_<span style="color:red">group</span>_<span style="color:black">HV</span>''' | ||
::where the four attributes (freq,dims,group,HV) are: | ::where the four attributes (freq,dims,group,HV) are: | ||
::'''<span style="color:black">freq</span>''': time-independent ('''<span style="color:black">const</span>'''), instantaneous ('''<span style="color:black">inst</span>''F'' '''), time-average ('''<span style="color:black">tavg</span>''F'' '''), diurnally time-averaged (<span style="color:black">tdav<span style="color:black">''F'') where ''F'' indicates the frequency or averaging interval and can be one of the following: | ::'''<span style="color:black">freq</span>''': time-independent ('''<span style="color:black">const</span>'''), instantaneous ('''<span style="color:black">inst</span>''F'' '''), time-average ('''<span style="color:black">tavg</span>''F'' '''), diurnally time-averaged ('''<span style="color:black">tdav<span style="color:black">''F'' ''') where ''' ''F'' ''' indicates the frequency or averaging interval and can be one of the following: | ||
::::30mn = every 30 minutes | ::::'''<span style="color:black">30mn</span>''' = every 30 minutes | ||
::::01hr = hourly | ::::'''<span style="color:black">01hr</span>''' = hourly | ||
::::01mo = monthly | ::::'''<span style="color:black">01mo</span>''' = monthly | ||
::The <span style="color:black">tdav</span>''F'' files typically contain monthly diurnal files, meaning, monthly means for each hour of the day: 0 UTC, 1 UTC, …, 23UTC. | ::The '''<span style="color:black">tdav</span>''F'' ''' files typically contain monthly diurnal files, meaning, monthly means for each hour of the day: 0 UTC, 1 UTC, …, 23UTC. | ||
dims: 2d for collections with only 2-dimensional fields or 3d for collections with a | dims: 2d for collections with only 2-dimensional fields or 3d for collections with a | ||
Revision as of 08:37, 28 October 2014
Problem
We want to understand the file naming conventions of G5NR products
Solution
The standard generic complete name for G5NR products appear as
c1440_NR.collection.timestamp.nc4
where
c1440_NR
- the c1440 token indicates the resolution of the cubed-sphere grid. 14402 is the number of grid points in each face of the cubed-sphere. NR stands for Nature Run.
collection
- The operational GEOS-5 data are organized into file collections that contain fields with common characteristics. However, computational considerations required that 3D collections have a single variable in them. Collection names are of the form
- freq_dims_group_HV
- where the four attributes (freq,dims,group,HV) are:
- freq: time-independent (const), instantaneous (instF ), time-average (tavgF ), diurnally time-averaged (tdavF ) where F indicates the frequency or averaging interval and can be one of the following:
- 30mn = every 30 minutes
- 01hr = hourly
- 01mo = monthly
- The tdavF files typically contain monthly diurnal files, meaning, monthly means for each hour of the day: 0 UTC, 1 UTC, …, 23UTC.
- The operational GEOS-5 data are organized into file collections that contain fields with common characteristics. However, computational considerations required that 3D collections have a single variable in them. Collection names are of the form
dims: 2d for collections with only 2-dimensional fields or 3d for collections with a mix of 2- and 3-dimensional fields.
group: A short mnemonic for the type of fields in the collection, or the variable name for single-variable collections.
HV: Horizontal and Vertical grid.