Air temperature varies across the Earth and as such it can be represented as temperature surface (map). Temperature surfaces provide critical information for applications relating to climate change adaptation and agricultural planning and management. The generation of temperature surfaces usually involves interpolating temperature measurements taken at weather stations. Although the weather stations [...]
The drought in South Africa in recent years has forced farmers to change their watering habits and use water more efficiently, resulting in crops being irrigated less frequently. This can lead to the accumulation of salts in soils, which can have a detrimental effect on production. In the article Getting Ahead Of Salinization, [...]
On the 7th of August, the CGA and the Department of Geography and Environmental Studies were visited by Mr Mfanafuthi Gama of the Department of Agriculture, Rural Development and Land Reform. He presented on the new National Spatial Planning Data Repository (NSPDR) which is being developed by his department. The NSPDR will [...]
The CGA presented their Introduction to Geographic Information Systems (GIS) short course from 3rd to 7th of June, which was attended by 8 delegates. This course is aimed at beginners to GIS and teaches the basic theoretical and practical functionality of GIS. Themes covered in this course include: An introductory overview of GIS in the context of geo-information [...]
The CGA expanded at the beginning of 2019, adding a number of new members of staff to our team. We would like to welcome Dr Tara Southey, Mr Adriaan Prins and Mr Christiaan Theron. Dr Tara Southey joined the CGA in April as Postdoctoral Researcher focusing on climate change in [...]
See below a comparison of Sentinel 2 images of the fires affecting the Overberg area. On the left are images taken on the 22nd of December 2018 before the fires started, and on the right are images taken on the 6th of January, when the burnt area was estimated at 5600ha. On the 8th [...]
The CGA is proud to be one of the winners of the SAEOchallenge! It seems that the judges agreed that our earth observation technology to map and monitor water use of irrigated agriculture at national scale is highly innovative. We hope that this exposure will lead to the [...]
The CGA is excited to be hosting an Advanced GEOBIA workshop with guest trainer Keith Peterson, Product Manager eCognition Trimble Inc. Germany. Themes that will be covered include convolutional neural networks; customised algorithms; point cloud & vector analytics, machine learning algorithms; and template matching. For more information please visit the events page. [...]
The four-year CGA project for the WRC, An Earth Observation Approach towards Mapping Irrigated Areas and Quantifying Water Use by Irrigated Crops in South Africa, has been published by the WRC and is now available online. Various assessments since 1990 have documented area of the irrigated crops in South Africa. However the [...]
The CGA presented their Introduction to Earth Observation short course from 13-17 August 2018, which was attended by 16 delegates. This course is aimed at beginners to earth observation, and teaches the basic principles and techniques fundamental to remote sensing. Themes covered in this course include: the principles of remote sensing and [...]