Browsing Geography, Geoinformatics and Meteorology by Type "Article"

Browsing Geography, Geoinformatics and Meteorology by Type "Article"

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  • 15 years after the national environmental Management Air Quality Act : is legislation failing to reduce air pollution in South Africa? 
    Tshehla, Cheledi; Wright, Caradee Yael (Academy of Science of South Africa, 2019)
    Air pollution is characterised by the presence of chemicals or compounds in the air which are usually not present or are present at levels higher than those considered to be safe for human health. 1 Air pollution is the ...
  • The 2015-19 multi year drought in the Eastern Cape, South Africa : it's evolution and impacts on agriculture 
    Archer, Emma Rosa Mary; Du Toit, Justin; Engelbrecht, Christina Johanna; Hoffman, M. Timm; Landman, Willem Adolf; Malherbe, Johan B.; Stern, Maryke (Elsevier, 2022-01)
    The Eastern Cape Province, and in particular, it's interior western Karoo region, has long been subject to periodic droughts, with significant implications for it's agricultural sector. From 2015, with some recovery in ...
  • '50 for 50’ : a celebration of 50 years of cancer research at the International Agency for Research on Cancer global conference in Lyon, France 
    Taljaard, Christine; Wright, Caradee Yael (Health and Medical Publishing Group, 2016-09)
    The International Agency for Research on Cancer (IARC) was founded on 20 May 1965. For the past 50 years, the IARC has served as the specialised cancer research unit of the World Health Organization. The IARC strives ...
  • Aboveground biomass density models for NASA’s global ecosystem dynamics investigation (GEDI) lidar mission 
    Duncanson, Laura; Kellner, James R.; Armston, John; Dubayah, Ralph; Minor, David M.; Hancock, Steven; Healey, Sean P.; Patterson, Paul L.; Saarela, Svetlana; Marselis, Suzanne; Silva, Carlos E.; Bruening, Jamis; Goetz, Scott J.; Tang, Hao; Hofton, Michelle; Blair, Bryan; Luthcke, Scott; Fatoyinbo, Lola; Abernethy, Katharine; Alonso, Alfonso; Andersen, Hans-Erik; Aplin, Paul; Baker, Timothy R.; Barbier, Nicolas; Bastin, Jean Francois; Biber, Peter; Boeckx, Pascal; Bogaert, Jan; Boschetti, Luigi; Boucher, Peter Brehm; Boyd, Doreen S.; Burslem, David F.R.P.; Calvo-Rodriguez, Sofia; Chave, Jerome; Chazdon, Robin L.; Clark, David B.; Clark, Deborah A.; Cohen, Warren B.; Coomes, David A.; Corona, Piermaria; Cushman, K.C.; Cutler, Mark E.J.; Dalling, James W.; Dalponte, Michele; Dash, Jonathan; De-Miguel, Sergio; Deng, Songqiu; Ellis, Peter Woods; Erasmus, Barend Frederik Nel; Fekety, Patrick A.; Fernandez-Landa, Alfredo; Ferraz, Antonio; Fischer, Rico; Fisher, Adrian G.; Garcia-Abril, Antonio; Gobakken, Terje; Hacker, Jorg M.; Heurich, Marco; Hill, Ross A.; Hopkinson, Chris; Huang, Huabing; Hubbell, Stephen P.; Hudak, Andrew T.; Huth, Andreas; Imbach, Benedikt; Jeffery, Kathryn J.; Katoh, Masato; Kearsley, Elizabeth; Kenfack, David; Kljun, Natascha; Knapp, Nikolai; Kral, Kamil; Krucek, Martin; Labriere, Nicolas; Lewis, Simon L.; Longo, Marcos; Lucas, Richard M.; Main, Russell; Manzanera, Jose A.; Martínez, Rodolfo Vasquez; Mathieu, Renaud; Memiaghe, Herve; Meyer, Victoria; Mendoza, Abel Monteagudo; Monerris, Alessandra; Montesano, Paul; Morsdorf, Felix; Næsset, Erik; Naidoo, Laven; Nilus, Reuben; O’Brien, Michael; Orwig, David A.; Papathanassiou, Konstantinos; Parker, Geoffrey; Philipson, Christopher; Phillips, Oliver L.; Pisek, Jan; Poulsen, John R.; Pretzsch, Hans; Rudiger, Christoph; Saatchi, Sassan; Sanchez-Azofeifa, Arturo; Sanchez-Lopez, Nuria; Scholes, Robert; Silva, Carlos A.; Simard, Marc; Skidmore, Andrew; Sterenczak, Krzysztof; Tanase, Mihai; Torresan, Chiara; Valbuena, Ruben; Verbeeck, Hans; Vrska, Tomas; Wessels, Konrad; White, Joanne C.; White, Lee J.T.; Zahabu, Eliakimu; Zgraggen, Carlo (Elsevier, 2022-03)
    NASA’s Global Ecosystem Dynamics Investigation (GEDI) is collecting spaceborne full waveform lidar data with a primary science goal of producing accurate estimates of forest aboveground biomass density (AGBD). This ...
  • Accuracy comparison of Pleiades satellite ortho-images using GPS device based GCPs against TerraSAR-X-based GCPs 
    Henrico, Ivan; Combrinck, Ludwig; Eloff, Corne (CONSAS Conference, 2016-11)
    Conducting single frame orthorectification on satellite images to create an ortho-image requires four basic components, namely an image, a geometric sensor model, elevation data (for example a digital elevation model (DEM)) ...
  • Actions to halt biodiversity loss generally benefit the climate 
    Shin, Yunne-Jai; Midgley, Guy F.; Archer, Emma Rosa Mary; Arneth, Almut; Barnes, David K.A.; Chan, Lena; Hashimoto, Shizuka; Hoegh-Guldberg, Ove; Insarov, Gregory; Leadley, Paul; Levin, Lisa A.; Ngo, Hien T.; Pandit, Ram; Pires, Aliny P.F.; Poertner, Hans-Otto; Rogers, Alex D.; Scholes, Robert J.; Settele, Josef; Smith, Pete (Wiley, 2022-05)
    The two most urgent and interlinked environmental challenges humanity faces are climate change and biodiversity loss. We are entering a pivotal decade for both the international biodiversity and climate change agendas with ...
  • Adapting the Dyna-CLUE model for simulating land use and land cover change in the Western Cape Province 
    Tizora, Petronella; Le Roux, Alize; Mans, Gerbrand; Cooper, Antony Kyle (CONSAS Conference, 2018-09)
    Models which integrate and evaluate diverse factors of Land Use and Land Cover (LULC) change can be used to guide planners in making more informed decisions and achieving a balance between urban growth and preservation of ...
  • Adding value to numerical weather predictions for the aviation industry in South Africa 
    Jacobs, Quinton; Landman, Willem Adolf (Embry-Riddle Aeronautical University, 2019)
    The aviation industry forms part of the backbone of modern society. Air travel enables people and goods to be transported over vast distances in short periods of time. The aviation industry, therefore, enables the populace ...
  • Address data sharing : organizational motivators and barriers and their implications for the South African spatial data infrastructure 
    Sebake, Malete Daniel; Coetzee, Serena Martha; Joint Research Centre of the European Commission (European Commission Joint Research Centre, 2013)
    An address is a common reference for a multitude of information. In South Africa, multiple address datasets are developed and maintained by various public and private organizations with little or no cooperation on data ...
  • Advances towards the development of a cloud-resolving model in South Africa 
    Bopape, Mary-Jane Morongwa; Engelbrecht, Francois Alwyn; Randall, David A.; Landman, Willem Adolf (AOSIS Open Journals, 2014-09)
    Recent advances in supercomputing have made feasible the numerical integration of high-resolution cloudresolving models (CRMs). CRMs are being used increasingly for high-resolution operational numerical weather prediction ...
  • Aerosol climatology over South Africa based on 10 years of multiangle imaging spectroradiometer (MISR) data 
    Tesfaye, M.; Sivakumar, Venkataraman; Botai, Joel Ongego; Tsidu, G. Mengistu (American Geophysical Union, 2011)
    In this paper, we present a detailed study of the spatial and seasonal aerosol climatology over South Africa (SA), based on Multiangle Imaging Spectroradiometer (MISR) data. We have used 10 years (2000–2009) of MISR ...
  • The allelopathic, adhesive, hydrophobic and toxic latex of Euphorbia species is the cause of fairy circles investigated at several locations in Namibia 
    Meyer, Jacobus Johannes Marion; Schutte, Christiaan E.; Hurter, Jan W.; Galt, Nicole S.; Degashu, Petunia; Breetzke, Gregory Dennis; Baranenko, Denis; Meyer, Nicole L. (BioMed Central, 2020-08)
    BACKGROUND: In this multidisciplinary study we present soil chemical, phytochemical and GIS spatial patterning evidence that fairy circles studied in three separate locations of Namibia may be caused by Euphorbia ...
  • Ambient air pollution on the Highveld : an airshed at a watershed moment? 
    Wernecke, Bianca; Langerman, Kristy E.; Garland, Rebecca M.; Feig, Gregor Timothy (National Association for Clean Air, 2022)
    On 18 March 2022, the Pretoria High Court found that chronic air pollution is a violation of Section 24 of the South African Constitution, and that South Africans have a right to an environment that is not harmful to ...
  • Ambient particulate air pollution and daily mortality in 652 cities 
    Liiu, C.; Chen, R.; Sera, F.; Vicedo‑Cabrera, A.M.; Guo, Y.; Tong, S.; Coelho, M.S.Z.S.; Saldiva, P.H.N.; Lavigne, E.; Matus, P.; Valdes Ortega, N.; Osorio Garcia, S.; Pascal, M.; Stafoggia, M.; Scortichini, M.; Hashizume, M.; Honda, Y.; Hurtado‑Diaz, M.; Cruz, J.; Nunes, N.; Teixeira, J.H.; Kim, H.; Tobias, A.; Íniguez, C.; Forsberg, B.; Astrom, C.; Ragettli, M.S.; Gou, Y.-L.; Chen, B.-Y.; Bell, M.L.; Wright, Caradee Yael; Scovronick, N.; Garland, Rebecca M.; Milojevic, A.; Kysely, J.; Urban, A.; Orru, H.; Indermitte, E.; Jaakkola, J.J.K.; Ryti, J.J.K.; Katsouyanni, K.; Analitis, A.; Zanobetti, A.; Schwartz, J.; Chen, J.; Wu, T.; Cohen, A.; Gasparrini, A.; Kan, H. (Massachusetts Medical Society, 2019-08-22)
    BACKGROUND : The systematic evaluation of the results of time-series studies of air pollution is challenged by differences in model specification and publication bias. METHODS : We evaluated the associations of inhalable ...
  • Analysing surface energy balance closure and partitioning over a semi-arid savanna FLUXNET site in Skukuza, Kruger National Park, South Africa 
    Majozi, Nobuhle P.; Mannaerts, Chris M.; Ramoelo, Abel; Mathieu, Renaud; Nickless, Alecia; Verhoef, Wouter (European Geosciences Union, 2017-07-10)
    Flux towers provide essential terrestrial climate, water, and radiation budget information needed for environmental monitoring and evaluation of climate change impacts on ecosystems and society in general. They are also ...
  • Analysis of drought progression physiognomies in South Africa 
    Botai, Joel Ongego; Botai, Christina M.; De Wit, Jaco P.; Muthoni, Masinde; Adeola, Abiodun Morakinyo (MDPI Publishing, 2019-02-11)
    The spatial-temporal variability of drought characteristics and propagation mechanisms in the hydrological cycle is a pertinent topic to policymakers and to the diverse scientific community. This study reports on the ...
  • An analysis of past and future heatwaves based on a heat‑associated mortality threshold : towards a heat health warning system 
    Kapwata, Thandi; Gebreslasie, Michael T.; Wright, Caradee Yael (BMC, 2022-11-19)
    Heatwaves can have severe impacts on human health extending from illness to mortality. These health effects are related to not only the physical phenomenon of heat itself but other characteristics such as frequency, ...
  • An analysis of the behavioural persistence of tree-growing farmers in the Sudano-Sahelian Region of Cameroon 
    Chia, Eugene Loh; Chirwa, Paxie W.; Nsubuga, Francis Wasswa Nkugwa (Springer, 2024-06)
    Tree-growing support programs are being implemented widely to enhance farmers’ involvement in land restoration schemes. However, the reasons why farmers will continue to engage in restoration activities when support programs ...
  • Analysis of the Hadley cell, subtropical anticyclones and their effect on South African rainfall 
    Mahlobo, Dawn; Engelbrecht, Francois A.; Ndarana, Thando; Abubakar, Hadisu Bello; Olabanji, Mary Funke; Ncongwane, Katlego (Springer, 2024-02)
    This study investigates the behaviour of subtropical high-pressure systems and the Hadley cell, which affect the weather of South Africa, using the ERA-Interim database and ensemble of 14 global circulation models from ...
  • Analysis of the performance of hydrogen maser clocks at the Hartebeesthoek Radio Astronomy Observatory 
    Munghemezulu, Cilence; Combrinck, Ludwig; Botai, Joel Ongego; Quick, J. (CONSAS Conference, 2016-11)
    Hydrogen maser frequency standards are commonly utilised in various space geodetic techniques such as Very Long Baseline Interferometry (VLBI) as local reference clocks. The Hartebeesthoek Radio Astronomy Observatory in ...