Getting the Daily Forecast from the OPeNDAP Server

When looking for the latest POAMA forecast files, you would start with this URL which points to the OPeNDAP server page:

http://opendap.bom.gov.au:8080/thredds/catalogs/bmrc-poama-catalog.html

The first item available is the "POAMA 2.4 Multiweek Real Time Forecasts"

http://opendap.bom.gov.au:8080/thredds/catalogs/bmrc-poama-multiweek-realtime-catalog.html

There are Daily, Weekly, Monthly Datasets. Assuming that you require the Daily Output, there are Model A, Model B, Model C and Multimodel datasets

Within each model (A, B, C), there are:

Ensemble Members (e00 -> e10),
the Ensemble Mean (emn), and
some climatologies (specifically model_clim_1981-2010 is available for the daily data)

e00 -> http://opendap.bom.gov.au:8080/thredds/catalog/poama/realtime/daily/m24a/e00/catalog.html

emn -> http://opendap.bom.gov.au:8080/thredds/catalog/poama/realtime/daily/m24a/emn/catalog.html

model_clim_1981-2010 -> http://opendap.bom.gov.au:8080/thredds/catalog/poama/realtime/daily/m24a/model_clim_1981-2010/catalog.html

Finally, the (NetCDF) files themselves are accessible using the URL (Model A, Ensemble Mean) located on the page:

To get a multimodel anomaly for a daily forecast, you will need to combine all three models and their closest climatology:

(Model A Ensemble Mean - Model A Climatology)

(Model B Ensemble Mean - Model B Climatology)

(Model C Ensemble Mean - Model C Climatology)

Please be aware that the Daily files are quite large (290.4 Mb) and you may want only a couple of variables from this file.

In this case, you may want to consider using Python or NCL to open the file and retrieve the specific fields you require (in the region that you are looking at).

Hopefully this description has been helpful for you in the use of the POAMA data on the OPeNDAP server.