Cyclone Dineo

Cyclone Dineo’s progression captured in a MODIS (Corrected Reflectance Bands 3-6-7) time series from 12 to 21 February 2017. MODIS band combination 367 is normally used to map snow and ice as it makes it possible to differentiate snow and ice from clouds. In this animated time series, cyclone Dineo’s progression is clearly seen as an orange swirl moving off the coast of Madagascar in a westward direction into Mozambique and the interior parts of Southern Africa.

Image credits:

Compiled at SANSA Earth Observation. MODIS Terra: NASA LP DAAC, 2015, MODIS/Terra Corrected Reflectance (Bands 3-6-7).



Happy Valentines

Landsat 8 Colour infrared composite 543 the Johannesburg.

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Cosmo City

SPOT6 image captured in 2016 showing a view of Cosmo City from space. Cosmo City which lies to the northwest of Johannesburg’s city centre is R3,5-billion greenfield project developed in an environmentally sensitive area. Large amounts of space were reserved for conservation purposes to protect indigenous fauna and flora. The suburb is not only a welcoming haven for people of all social and financial backgrounds but also a testament to innovation and sustainable development practices. The city of Johannesburg embarked on an ambitious solar geyser project, the first of its kind, which saw the fitment of geysers and solar panels to residents homes. Satellite imagery from sensors such as SPOT 6 and 7, afford analysts and town planners in government critical geo-intelligence needed for developments such as Cosmo City.

Image credits:
Produced at SANSA Earth Observation. SPOT6: Copyright © 2013 Airbus DS. All rights reserved.


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Red Tide at Walker Bay Captured in Satellite Imagery

This Sentinel 2A image acquired 11 January 2017 shows extensive red tide (highlighted in a yellow box) in the Vermont area not very far from the town of Hermanus in the Western Cape Province of South Africa. Red tide is a colloquial term used to refer to one of a variety of natural phenomena known as harmful algal blooms, which occur when south-easterly winds bring nutrients up from the ocean bottom that under certain conditions cause a population increase in phytoplankton on the sea surface. Certain species of phytoplankton, contain photosynthetic pigments that vary in colour from green to brown to red. Red tide is not only harmful to marine and coastal species of fish, birds and marine mammals but also poses potential harm to human health. People can become seriously ill from eating oysters and other shellfish contaminated with red tide toxin.

Image credits:
Copernicus Sentinel data 2017.

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Natural Wonders of South Africa Series – Table Mountain

SPOT6/7 imagery of Table Mountain, Cape Town. The imagery acquired between 25 March and 6 July, 2015 shows the level plateau approximately 3 kilometres from side to side, edged by impressive cliffs.

On 2 December, 2012 Table Mountain was officially inaugurated as one of the seven natural wonders of the world in a ceremony held at the foot of the Mountain in Cape Town. The flat-topped mountain forms a prominent landmark overlooking the city of Cape Town in South Africa and is significant tourist attraction, with many visitors using the cableway or hiking to the top. The mountain also forms part of a National Park and is home to an unusually rich biodiversity consisting predominantly of several different types of the unique and rich Cape fynbos.

Image credits: Produced at SANSA Earth Observation. SPOT6: Copyright © 2013 Airbus DS. All rights reserved. SPOT6: Copyright © 2014 Airbus DS. All rights reserved.


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