heidi
(Heidi Nettelbeck, ACCESS-NRI Atmosphere Modelling Team Lead)
1
This topic will be used for announcements to the Atmosphere Working Group by the leadership team.
We will announce meetings, workshops and events through this topic. There will not be an email list. You need to watch this topic to receive new announcements via email notifications.
This youtube video explains how to watch a topic on the ACCESS-Hive Forum.
Single Column Model (SCM): presentation by Martin Dix and Bethan White (15 + 5mins)
The UM includes a SCM configuration. This includes the full UM atmosphere and land surface physics, but replaces the dynamics by advective tendencies derived from observations or from a full model. It’s a useful tool for testing physics parameterisations because it runs quickly and gives detailed per timestep diagnostics.
Martin will present some tests comparing JULES and CABLE land surface schemes driven with data from ERA5 and from a global UM run.
Earth Model Column Collaboratory (EMC2): Calum Knight will give an introduction to EMC2, an open-source ground-based lidar and radar instrument simulator and subcolumn generator for large-scale models (10 + 5 mins)
Discussion: Ideas for future collaborative projects and joint meetings for Atmosphere and Forecasting & Prediction WGs (15 mins)
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heidi
(Heidi Nettelbeck, ACCESS-NRI Atmosphere Modelling Team Lead)
20
Atmosphere Working Group Meeting 12.06.2024
Our next working group meeting will be held at 14:00 on 12.06.2024.
For a calendar invite, simply click on the relevant calendar link below
Admin: Volunteer for taking today’s meeting minutes to post here on the Forum.
Simulating aerosol in the Regional Nesting Suite: presentation by Matt Woodhouse (15 + 10mins)
Matt will provide an overview of an aerosol-enabled configuration of the Regional Nesting Suite. The configuration uses the GLOMAP-mode microphysical aerosol scheme coupled to the CASIM cloud scheme. I’ll talk about the boundary conditions (and the Regional Ancillary Suite), and how the suite has been configured to address our scientific questions. Matt would appreciate feedback on the configuration of the domains!
Tech talk: a short tutorial on Ancillaries and ANTS by Martin Dix (10 + 5 mins)
Storage and Compute resources for Atmosphere WG
Any experiment proposals for Q3/2024? → 770 kSU (Heidi)
heidi
(Heidi Nettelbeck, ACCESS-NRI Atmosphere Modelling Team Lead)
21
ACCESS Training Day survey
Tell us what you want to learn at the 2024 ACCESS Workshop Training Day in Canberra on 05.09.2024! Fill out this (very) short form!
This will help the ACCESS-NRI User Training team organise the most relevant and useful content for you.
Please reply by Monday, June 24th @ 5pm
heidi
(Heidi Nettelbeck, ACCESS-NRI Atmosphere Modelling Team Lead)
22
Admin: Volunteer for taking today’s meeting minutes to post here on the Forum.
Post-processing AUS2200 model output with ACCESS-MOPPeR: an overview by Paola Petrelli and Sam Green from CMS-CLEX (15 + 10mins). MOPPeR started as replacement for the APP4, used to produce CMIP6 output. It manages the entire workflow of producing CMIP-style variables starting from raw model output. It will map, extract and write variables to well-documented files. It can also calculate derived variables or resample them to different time frequencies. The mapping, output standards and calculations can all be customised by the user, which makes MOPPeR a lot more flexible than the previous tool. Welcome feedback and collaboration to add more settings and calculations to the tool.
Discussion: Do we want an Atmosphere Cookbook? (15-20mins)
Collation of ‘recipes’ (i.e., Jupyter notebooks) with examples for analysing output from atmosphere models using data loaded from NRI-Intake catalogue.
WG Compute Resources user report (5mins) Sonya Fiddes will give a short presentation on the proposal/results from her `Fixing DMS Ancillary files in ACCESS-AM2 runs’ experiment.
Compute/storage resources for Atmosphere WG(Heidi)
Admin: Volunteer for taking today’s meeting minutes to post here on the Forum.
ACCESS update from APS2 to APS3 led to drastic reduction in predicted cloud coverage in the Great Barrier Reef region by Luke Harrison (15+5mins)
Updating the ACCESS model from APS2 to APS3 in ~2020 the cloud parametrisation also included an update from the ‘Smith’ scheme in ACCESS-R to ‘PC2’ in BARRA-R. This change led to a significant reduction in the amount of cloud predicted over the QLD/GBR region, primarily driven by a change in the amount of low cloud. A comparison between ACCESS APS2, APS3, BARRA reanalysis and Himawari satellite retrieval data will be shown.
Compute/storage resources - Atmosphere WG - Heidi Nettelbeck
Any experiment proposals for Q4/2024? → 228 kSU
See how to Apply for Atmosphere WG Resources
Next Atmosphere WG meeting:
November 2024. TBA
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heidi
(Heidi Nettelbeck, ACCESS-NRI Atmosphere Modelling Team Lead)
31
Joint meeting: Atmosphere WG and Aus2200
For a calendar invite, simply click on the relevant calendar link below
Admin: Volunteer for taking today’s meeting minutes to post here on the Forum.
Science talks (20+5mins)
Investigating sea breeze climatology and characteristics using the ACCESS model by Dr. Andrew Brown
Understanding sea breeze characteristics and climatology is important for several applications, including coastal wind resource assessments. However, due to the sparseness of wind observations near the surface and in the boundary layer, there are gaps in regional sea breeze understanding for Australia. Regional and kilometre-scale atmospheric models provide an opportunity to address some of these gaps by simulating sea breeze processes across large regions and over long periods. Andrew will present work towards using the ACCESS-based BARRA reanalysis to construct an Australia-wide climatology of sea breezes. He will also present progress and plans towards applying a km-scale regional nested configuration of the ACCESS atmosphere-land model, intended for investigating sea breeze processes in some targeted domains relevant for coastal wind resources.
!–Cancelled–!Objectively Assessing Characteristics of Mesoscale Convective Organization in an Operational Convection-Permitting Model by Dr. Ewan Short
Tracking algorithms provide a way to systematically assess the realism of convective systems in convection permitting models. A storm tracking/analysis algorithm was applied to observed radar reflectivity and radar reflectivity was simulated from the operational ACCESS-C convection-permitting forecast domain over northern Australia between October 2020 and May 2022. Simulated systems were approximately twice as likely to be oriented parallel to the ambient wind and ambient wind shear than those observed by radar, indicating a bias toward the “training line” systems typically associated with more extreme rainfall. Currently, these methods are being extended to work with radar composites to assess the structure of larger convective systems.
Aus2200: past, present and future direction (15-20mins)
Aus2200 journey: Yi Huang
ACCESS-NRI supported configuration of the RNS: Chermelle Engel
Discussion: What kind of experiments would you like to do with a high-resolution regional model?
ACCESS-NRI Atmosphere team 2024/25 Workplan:Heidi Nettelbeck (5-10mins)
Compute/storage resources - Atmosphere WG:Heidi Nettelbeck
Experiment proposals for Q4/2024 → 873 kSU remaining
Read how you can apply for Atmosphere WG Resources
