AMetA

Welcome to the Australian Meteorological Association Inc.

Revised meeting location

For several years prior to COVID, the AMetA bi-monthly meetings were held in a conference room at the Bureau of Meteorology offices in South Terrace / King William Street, Adelaide. Meetings were suspended during the first year of COVID, and since February 2021 the meetings have resumed in various ALTERNATIVE LOCATIONS, while the Committee continues to investigate longer-term options. A return to the BOM conference room is still thought to be possible.

As an experiment, the October 2021 meeting was held at a hotel in North Adelaide. This was in the form of a Dinner Meeting, and attendees were asked to comment on its success.

Since then, meetings have all been held at St Saviour’s Anglican Church, cnr of Portrush Rd and Pridmore Rd, Glen Osmond. Meanwhile, the deliberations continue!


Last Meeting – Tuesday 19th April ’22

Where: St Saviour’s Anglican Church

596 Portrush Rd, Glen Osmond

Note: enter via Pridmore Rd

When: 7pm to about 8:30pm, Tuesday 19th April

Speaker: Dr Matthew Emes, University of Adelaide.

Impacts of Boundary Layer Turbulence on Heliostats in Solar Thermal Plants

Abstract

Heliostat mirrors used to concentrate solar radiation in solar thermal plants are small-scale, thin-walled structures which can be significantly impacted by turbulence generated in the atmospheric boundary layer (ABL).  The characteristics of such flimsy structures are not considered in conventional building design codes. 

This talk provided an insight into the generation and analysis of turbulence characteristics within the ABL using the large-scale University of Adelaide wind tunnel. The work is important in providing accurate prediction of  design wind loads on heliostats, not only to avoid structural failure, but also reduce the cost of steel pedestals, foundations, mirror support structure and drives. Verification of the wind tunnel correlations with atmospheric surface layer turbulence parameters  will be investigated at the atmospheric boundary layer research facility at the University of Adelaide Roseworthy campus.

Bio:
Dr Matthew Emes is a postdoctoral researcher in the School of Mechanical Engineering, University of Adelaide.  He has a background in experimental fluid mechanics and atmospheric boundary layer turbulence with a focus on how turbulence can impact the aerodynamics and wind loads of heliostats used in solar thermal technology. Dr Emes’ research is funded by the Australian Renewable Energy Agency (ARENA) through the Australian Solar Thermal Research Institute (ASTRI) heliostat project, and the US Department of Energy (DOE) Heliostat Consortium (HelioCon).


Previous Meeting – Tuesday 18th February ’22

Speaker: Darren Ray, Applied Climatologist

Darren gave a review of 2021’s weather together with some thoughts on climate change. The meeting was very well attended.


PWS Activities Commenced in June ’21

PWS (Personal Weather Stations) activity finally kicked off on Sunday 20th June 2021 in the Greenacres Library, which is located at 2 Fosters Rd, Greenacres (near the corner of NorthEast Rd and Fosters Rd, Greenacres).

Mark Little (AMetA President) represented AMetA at a meeting for people interested in IoT (Internet of Things). His aim was to investigate whether air-quality monitoring could be an appropriate activity for AMetA participation, at least to get us started.

This LINK will give you some idea of what the IoT is all about.

UPDATE: For an update on PWS activity – see page 4 of the August 2021 edition of the AMetA Newsletter (Monana).


Monana Publications

To maintain virtual contact with our members during our COVID hibernation, we began producing monthly newsletters, alternating between the traditional Monana series and a new series which is mainly directed at people with an interest in personal weather station (PWS) issues, although probably also of interest to most of our members. Both series of newsletters have been made visible in the Members Area of this website (Visitors Welcome!).

As an example, the August 2021 issue of Monana can be viewed HERE.

The March 2021 issue of the PWS newsletter can be viewed HERE


Historical weather update

Mac Benoy, AMetA Citizen Science Team Leader

An item of great interest to AMetA members was presented on page 3 of The Advertiser on Thursday 9th July 2020. It was written by Miles Kemp – read a sample below.

The discovery of an extensive 150-year-old diary has filled a key gap in Adelaide’s colonial weather history and will (complete) one of the longest continual records in the Southern Hemisphere. The diary contains crucial weather details from 1843 to 1856, including rainfall, temperatures, cloud types and even barometric pressure, meticulously recorded in longhand.

AMetA project manager Mac Benoy said the discovery was part of a 15-year search by local volunteers to find colonial Adelaide’s missing weather records.”

A comprehensive explanation of how this information is being exploited is available on pages 2-7 of the October 2020 AMetA Newsletter (Monana), which may be viewed HERE.

* * * UPDATE * * * At the April 2021 AMetA Meeting, Mac Benoy gave a presentation entitled “Preserving our Historical Record” to a small but enthralled audience. Mac concentrated on SA Regional Office National Weather Folios from 1879-1957, relating his story to the technological advances taking place during the early days of SA white settlement.

Slides used in this talk may be viewed HERE. Mac intended to add some text to flesh out the slides, although the pictures are probably quite self explanatory. In the meantime it might be helpful to have first read the “comprehensive explanation” referred to in the paragraph above. PLEASE NOTE: The slides file is a fairly large (about 35MB) so it might be a bit challenging for older devices! Also note that the slides reside on the Dropbox cloud so you probably need to have Dropbox installed on your device.