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12 October 2020 | Story Leonie Bolleurs | Photo Supplied
Adriaan van der Walt
Although several international studies have used temperature metrics to statistically classify their seasonal divisions, a study in which Adriaan van der Walt was involved, would be the first known publication in a South African context using temperature as classification metric.

Gone are the days when we as South Africans would experience a three-month spring season, easing into summer, and then cooling off for three months before we hit winter.

Adriaan van der Walt, Lecturer in the Department of Geography at the University of the Free State (UFS), focuses his research on biometeorology (a specialist discipline exploring the role and climate change in physical and human environments) as well as climatology and geographic information systems.

He recently published an article: ‘Statistical classification of South African seasonal divisions on the basis of daily temperature data’ in the South African Journal of Science.

In this study, which Van der Walt undertook with Jennifer Fitchett, a colleague from the University of the Witwatersrand, data on daily maximum and minimum temperatures was collected from 35 meteorological stations of the South African Weather Service, covering the period between 1980 and 2015.

They went to great lengths to ensure that they had a complete set of data before presenting it to demonstrate seasonal brackets.

First for South Africa

Their statistical seasonal brackets indicate that South Africans now experience longer summers (from October to March), autumn in April and May, winter from June to August, and spring in September.

Although considerable work has been done using rainfall to determine seasonality in Southern Africa, Van der Walt believes that these methods did not work well as there are too many inconsistencies in this approach, as identified by Roffe et al. (2019, South African Geographical Journal). To make matters more complicated – as a semi-arid region, and with desert conditions along the west coast – some regions do not have enough rainfall to use as a classifier.

Temperature, on the other hand, worked well in this study. “Temperature, by contrast, is a continuous variable, and in Southern Africa has sufficient seasonal variation to allow for successful classification,” says Van der Walt.

He continues: “Although several international studies used temperature metrics to statistically classify their seasonal divisions, this study would be the first known publication in a South African context using temperature as classification metric.”

Van der Walt says what we understand as seasons largely relates to phenology – the appearance of blossoms in spring, the colouration and fall of leaves in autumn, and the migration of birds as a few examples. “These phenological shifts are more sensitive to temperature than other climatic variables.”

Seasonal brackets

According to Van der Walt, they believe that a clearly defined and communicated method should be used in defining seasons, rather than just assigning months to seasons.

“One of the most important arguments of our work is that one needs to critically consider breaks in seasons, rather than arbitrarily placing months into seasons, and so we welcome any alternate approaches,” he says.

A number of sectors apply the temperature-based division to their benefit. “For example, in the tourism sector it is becoming increasingly important to align advertising with the season most climatically suitable for tourism,” says Van der Walt.

Temperature-based division is also used to develop adaptive strategies to monitor seasonal changes in temperature under climate change. However, Van der Walt points out that each sector will have its own way of defining seasons. “Seasonal boundaries should nevertheless be clearly communicated with the logic behind them,” he says.

News Archive

New multi-purpose residences open in January 2015
2014-06-18

The UFS is currently busy with exciting new accommodation developments on both the Bloemfontein and Qwaqwa Campuses.

This includes a new residence with a hotel and a conference/lecture hall on the western part of the Bloemfontein Campus and the building of another residence on the Qwaqwa Campus.

“We have done what was possible in our quest to maximise the number of beds available in the older residences on the Bloemfontein Campus,” says Quintin Koetaan, Senior Director: Housing and Residence Affairs at the UFS. “This we achieved by converting underutilised and unutilised dining halls and kitchens into bedrooms, which was totally insufficient to address the dire need for beds.”

“The new residence building will have different types of accommodation. I am very excited and look forward to the completion of this project. And this particular residence also brings a very exciting architectural design to the university environment.”

The residence, with multiple blocks for different accommodation, will be wheelchair friendly and numbering and signage will also be in braille. This futuristic-designed building will stand the test of time and will be provide student accommodation until 2030.The R60 million project is funded by the UFS and the Department of Higher Education and Training.

In step with international university accommodation trends – as with Yale's residential college system – this residence will house female first-years who will be mentored by postgraduate students. Postgraduates will be headhunted with the support of the Student Representative Council’s (SRC) postgraduate committee. These postgraduate students will represent all the faculties. Block A and B will accommodate 184 female first-years.

Each floor in this residence will have a study room, two lounges, a kitchen and a laundry for 25 students. Security will be very tight, with three levels of security: entrance to residence, corridor and individual bedroom door. There will also be perimeter camera surveillance and a security officer outside and inside the residence. 

 
Block C will accommodate postgraduate students. The ground floor will house eight single-bed roomed flats. The first floor will have 16 single rooms sharing a bathroom, kitchen and living room, as well as one double room with its own bathroom. The second floor will have 21 single rooms sharing a bathroom, kitchen and living room.

Block D will house 18 hotel-like en suites, with a dining room where breakfast will be served. The target market here will be visiting academics and other university-affiliated visitors. Prices will be competitive to those of local guesthouses and hotels.

Bookings have already opened. Guests will be able to book in and access the hotel desk 24/7. The dining room, accommodating up to 60 people, will not only be open for hotel guests, but also for postgraduate students and UFS staff. Bookings will therefore be essential.

The expansion of bed spaces also took place at the Qwaqwa Campus. In 2012 a 200-bed residence with a state of the art computer room was completed. As a follow-up to this development, another 248-bed residence is now being built. In this particular residence, there will be designated post-graduate accommodation for 48 students.

The project will be handed over at the end of October 2014, with the first intake planned for January 2015.

Another development at the Qwaqwa Campus is the Chancellor’s House Bed & Breakfast. This B&B, with its 5 en suite rooms, is open for business for all UFS staff.

 

For enquiries or bookings at this new accommodation facility, contact:

- Undergraduate (first-year ladies’ residence):
Monica Naidoo at +27(0)51 401 3455 or NaidooM@ufs.ac.za  

- Postgraduate:
Hein Badenhorst at +27(0)51 401 2602 or BadenH@ufs.ac.za  

- Hotel:
Ilze Nikolova at +27(0)51 401 9689 or NikolovaI@ufs.ac.za  

- Chancellor’s House Bed & Breakfast on Qwaqwa Campus:
Olga Molaudzi at +27(0)58 718 5030 or molaudziOD@qwa.ufs.ac.za

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