400m resolution ACCESS limited-area simulation over Australia - Aus400
======

Results from the Aus400 weather simulation, a very high resolution (400m grid
spacing) simulation of the atmosphere over Australia during a 60 hour period
covering the landfall of Tropical Cyclone Debbie.

The simulation is intended to provide insight into atmospheric processes at a
wide range of scales, from continent-wide to sub-kilometer. The period was
chosen to cover a range of weather events, including the tropical cyclone, a
front system over the SE and a large storm over the NW.

Outputs include 2d variables at 10 minute resolution and 3d variables at 1 hour
resolution, covering the full domain. Also included are the 2.2km grid spacing
simulation used as an intermediate between BARRA reanalysis data and the target
resolution, and a small ensemble of 2.2km grid spacing simulations covering the
same period for statistical analysis.

The data is available online on the NCI TDS server:

  https://dapds00.nci.org.au/thredds/catalog/ia89/catalog.html

and for NCI users in the ia89 project.

Catalogues
==========

catalogue.csv
-------------

Listing of all published NetCDF output files with basic metadata

variables.csv
-------------

Listing of all published variables with basic metadata, may be joined to the
entries of 'catalogue.csv' using the columns ('variable', 'stream')


Directories
===========

grids
-----

Grid information for BARRA, 0.0198 degree and 0.0036 degree grids, with all
three Arakawa-C components (t, u, v), usable by e.g. `ESMF_RegridWeightGen` for
regridding weight generation.

Weight information for regridding from a high-resolution grid to a low
resolution grid, and from the u and v grids to the t grid at the same
resolution, usable by e.g. NCO to regrid a file to a different resolution.



u-bq574
-------

400m grid spacing (0.0036 degree) nest, boundary conditions from u-bm651

Path names look like:

    u-bq574/$RES/$STREAM/$VAR/$RES.$STREAM.$VAR.$DATE.nc

where:
    RES    - 'd0036' for 0.0036 degree
    STREAM - BARRA stream names
         fx:     static variables
         cldrad: cloud and radar variables on model levels
         mdl:    model level variables
         slv:    single level variables @ 1 hour
         spec:   single level variables @ 10min
    VAR    - BARRA variable names


u-bm651
-------

2.2km grid spacing (0.0198 degree) nest, boundary conditions from BARRA

Path names look like:

    u-bm651/$RES/$STREAM/$VAR/$RES.$STREAM.$VAR.$DATE.nc

where:
    RES    - 'd0198' for 0.0198 degree
    STREAM - BARRA stream names
         fx:     static variables
         cldrad: cloud and radar variables on model levels
         mdl:    model level variables
         slv:    single level variables @ 1 hour
         spec:   single level variables @ 10min
    VAR    - BARRA variable names


u-bs365
-------

Four extra ensemble members at 2.2km grid spacing (0.0198 degree), with settings matching
u-bm651. Each member was initialised from BARRA at a different start date

Path names look like:

    u-bs365/$RES/$START/$STREAM/$VAR/$RES.$STREAM.$VAR.$DATE.nc

where:
    RES    - 'd0198' for 0.0198 degree
    START  - Experiment start time
    STREAM - BARRA stream names
         fx:     static variables
         cldrad: cloud and radar variables on model levels
         mdl:    model level variables
         slv:    single level variables @ 1 hour
         spec:   single level variables @ 10min
    VAR    - BARRA variable names


restarts
--------

Restart files and boundary conditions for running a new nest inside of u-bm651,
and restart files at 12 hour intervals from u-bq574.

Files have been compressed using ['zstd'](https://github.com/facebook/zstd), to
decompress use `zstd -d -T$PBS_NCPUS $FILE`. 'zstd' is available at NCI in the
[hh5 Conda environment](http://climate-cms.wikis.unsw.edu.au/Conda)

Citation
--------
Wales, Scott, 2020. 400m resolution ACCESS limited-area simulation over Australia v1.0. National Research Data Collection , doi: 10.25914/5f1e4e3e3de2e