POAMA-2 Files and Structure
Introduction
This page details the files that are avalable for POAMA-2 and their derivation.
File Types and Description
The following table is a more comprehensive list of the file types that are available on the OPeNDAP Server.
| File | Size | Description | Model File |
|---|---|---|---|
| da_YYYYMMDD.nc | ~500 MB | Daily Atmosphere file - All variables | Yes |
| dag_YYYYMMDD.nc | ~126 MB / ~300 MB | Daily Atmosphere Global file - Variable subset for 90 days for the Seasonal Output and 270 days for the Multiweek Output | No |
| dar_YYYYMMDD.nc | ~43 MB | Daily Atmosphere Regional file - Variable subset for 270 days | No |
| IAF_YYYYMMDD.nc | <1 MB | Deprecated Index Atmosphere File | No |
| IAF_sa_YYYYMMDD.nc | <1 MB | Deprecated Index Atmosphere File | No |
| IARFd_YYYYMMDD.nc | <1 MB | Atmosphere Index Full Daily File | No |
| IARFw_YYYYMMDD.nc | <1 MB | Atmosphere Index Full Weekly File | No |
| IARFm_YYYYMMDD.nc | <1 MB | Atmosphere Index Full Monthly File | No |
| ID_YYYYMMDD.nc | <1 MB | Deprecated Index File | No |
| IDF_YYYYMMDD.nc | <1 MB | Deprecated Index File | No |
| IOA_YYYYMMDD.nc | <1 MB | Ocean Index Anomaly File - Soon to be deprecated | No |
| IOF_YYYYMMDD.nc | <1 MB | Ocean Index Full File - Soon to be deprecated | No |
| IORFd_YYYYMMDD.nc | <1 MB | Ocean Index Full Daily File | No |
| IORFw_YYYYMMDD.nc | <1 MB | Ocean Index Full Weekly File | No |
| IORFm_YYYYMMDD.nc | <1 MB | Ocean Index Full Monthly File | No |
| ma_YYYYMMDD.nc | ~18 MB | Monthly Atmosphere file | Yes |
| ma_4x4al_YYYYMMDD.nc | ~3 MB | Deprecated Quarter grid Monthly Atmosphere file | No |
| mn_???YYYYMMDD.nc | ~116 MB | Daily Ocean file slice | Yes |
| oa_YYYYMMDD.nc | ~96 MB | Monthly Ocean file | Yes |
| sa_YYYYMMDD.nc | ~14 MB | Deprecated Seasonal File | No |
| wa_YYYYMMDD.nc | ~16 MB | Weekly Atmosphere file | No |
| wa2_YYYYMMDD.nc | ~8 MB | Fortnightly or Biweekly Atmosphere file | No |
Files Available and their Derivation
Legend
File Type
|
There are four file types that are provided from the model output. These are coloured blue. For a variety of reasons, the model files are sliced (or hyperslabed) to remove less popular variables and to minimise the time dimension (weekly averages). These are coloured light blue. Index files are created from defined regions that average a defined area to produce a single number for each region. The index files are coloured light green. |
Transitions
|
The green arrows are primarily slicing a subset of the model files. The blue dashed arrows are operations that average time periods, usually weekly. The red dashed arrows are regional averaging processes. |
Current
This is the current state of the POAMA file set.
Short Term Changes
The fla_ file type has redundant information and is there to support some internal file processing. This will be removed.
Future
The monthly file will have the first partial month data removed. This can occur when the processes that use those monthly files are aware that the first month is now the first complete month of the forecast.
The index files will be calculated for all the daily, weekly and monthly file types. There is minimal overhead for these files.
Future Longer Term
The wa2_ file is a two-week average and can easily be derived from the wa_ file. Once all dependants processes have been migrated, this file will be removed.
