LCAW · 2025
London Climate Action Week
London, UK
Represented the Nature and Climate Impact Team (University of Exeter) at LCAW 2025.
AI · Climate · Data Science
Researcher.
Professor.
Science and Truth.
AI applied to climate change, disinformation detection, and data science, building tools and evidence at the intersection of science and society.
About
Marcos Oliveira Jr is an Assistant Professor of Data Science at UFRGS Campus Serra and a Honorary Research Fellow at the Nature & Climate Impact Team - University of Exeter. His work focuses on climate misinformation, sustainable technology and AI, and applied computing for agriculture.
Selected Highlights
When Research meets global climate conversations.
TEDx Talk · 2026
A Enchente de Desinformação e o Papel da IA
TEDxErechim Countdown, 2026
COP30 · 2026
ClimaVAR: Your Climate Referee
Belém, Brazil
Presented ClimaVAR and joined the panel 'From COP30 to Climate Action, Forests, and Truth in an Era of Transition' alongside Carlos Nobre.
WEF Davos · 2025 & 2026
Launch of ClimaVAR & Digital Impact for Species
World Economic Forum
Participated in WEF 2025; in 2026, launched two projects at Davos as part of NCIT/Exeter's presence.
Projects
When AI meets climate action.
01
ClimaVAR
AI-powered climate fact-checking platform using RAG, LLMs, and ClimateGPT. Launched at WEF Davos 2026 and COP30.
Visit project02
ClimateHopeAI
AI framework to identify positive climate narratives in news. Analysed 10,666 articles from the UK and Canada using LIWC and BERTopic.
Visit project03
Digital Impact for Species
Website carbon footprint calculator translating emissions into nature-based comparisons. Launched at WEF Davos 2026 as part of the MonkeyRock art installation. Funded by UKRI.
Visit projectIn the News
Research covered across 10+ countries and 3 continents.
ClimaVAR · Climate Disinformation
University of Exeter, Official News
Football-style 'Video Assistant Referee' tackles climate misinformation
Digital Impact for Species · WEF Davos 2026
5,000+
website visits
1,300+
unique IPs
1,195
real tool interactions
University of Exeter, Official News
New digital tool to be launched at World Economic Forum that calculates impact of websites on nature
Read article ·Visit speciesimpact.org ·LinkedIn posts by University of Exeter and collaborators · 80+ reactions, 10+ reposts
International Coverage
Brazil · Media & Campaigns
Valor Econômico (Brazil), Live Interview
Live chat on climate change impacts for business
Watch on YouTubeCollaboration with Climate Communication Campaigns
In partnership between Globo, Instituto Oyá, Climate Basecamp and Nature & Climate Impact Team
Junho 2025 · Brazil
Cadê o sabor que estava aqui?
Brazilian national campaign on the loss of food biodiversity and the climate impact on local flavors. I contributed as part of the Nature & Climate Impact Team.
Visit campaignJunho 2026 · Brazil
De Olho no Climão
Science communication initiative tackling climate disinformation in Brazil. I contributed as part of the Nature & Climate Impact Team.
Visit campaignPublications
Recent publications
In reverse chronological order.
- 2026
Red Cards for Climate Myths: introducing ClimaVAR, an AI-based Tool for Climate Disinformation Detection
De Oliveira Jr., M.; Whiteman, G.; Nugroho, N.K.; Siwach, A.; Cavalheiro, G.G.H.
CSBC 2026, SEMISH (accepted)accepted
- 2026
Data-Driven Climate Hardiness Zones for Sustainable Coffee Production in East Africa
Nugroho, N.K.; Tanyi, N.T.; Ayers, J.; De Oliveira Jr., M.
DASET 2026, Dundeein press
- 2026
Shifting Crop Hardiness Zones in Africa: A Literature Review on Digital Tools and Data Analytics
Tanyi, N.T.; Nugroho, N.K.; Ayers, J.; De Oliveira Jr., M.
DASET 2026, Dundeein press
- 2024
Clustering of meteorological data to improve agricultural decisions: a case study with SIMAGRO-RS
De Oliveira, M.A.; Varone, F.A.; Fraisse, C.W.; Araújo, R.M.; Cavalheiro, G.G.H.
SBSI '24, ACM, New York · doi:10.1145/3658271.3658288
- 2024
Meteorological Time Series Clustering in Agricultural Applications: A Systematic Literature Review
De Oliveira, M.A.; Oliveira, M.F.; Cavalheiro, G.G.H.
SBSI '24, ACM, New York · doi:10.1145/3658271.3658293
- 2023
ML-based Plant Stress Detection from IoT-sensed Reduced Electromes
De Oliveira Jr., M.; Sedrez, G.; Cavalheiro, G.G.H.
FLAIRS-36 Conference Proceedings · doi:10.32473/flairs.36.133180
- 2023
Clustering Weather Time Series used for Agricultural Disease Alert Systems in Florida
De Oliveira, M.A.; Cavalheiro, G.G.H.; Cerbaro, V.A.; Fraisse, C.W.
IEEE ISORC 2023 · doi:10.1109/ISORC58943.2023.00029
- 2023
Time Series Compression for IoT: A Systematic Literature Review
De Oliveira, M.A.; da Rocha, A.M.; Puntel, F.E.; Cavalheiro, G.G.H.
Wireless Communications and Mobile Computing · doi:10.1155/2023/5025255
Gallery
When the work is translated to impact.
Panels, workshops and talks across COP30, WEF26 and beyond — turning research on climate, AI and trust into rooms, conversations and decisions.
COP30Speaker
WGEO Pavilion · COP30
Presenting ClimaVAR · WGEO Pavilion, COP30
WEF26Speaker
Monkey Rock · WEF26
Digital Impact for Species panel · Monkey Rock, WEF26
TEDxTalk
TEDxErechim
TEDxErechim · 2026
WEF26Moderator
Arctic Basecamp · WEF26
Moderating Climate Misinformation panel · Arctic Basecamp, WEF26
COP30Speaker
WGEO Pavilion · COP30
Climate Education panel · WGEO Pavilion, COP30
WEF26Speaker
Monkey Rock · WEF26
COP30 outcomes panel with Carlos Nobre · Monkey Rock, WEF26
COP30Workshop
Nature & Climate House · COP30
AI & Misinformation workshop for South American digital creators · Nature & Climate House, COP30 (Bellwethers Group)
WEF26Speaker
UnDavos Summit · WEF26
Presenting ClimaVAR at UnDavos Summit · WEF26
TEDxTalk
TEDxErechim
TEDxErechim · 2026
COP30Speaker
WGEO Pavilion · COP30
Securing Water panel · WGEO Pavilion, COP30
WEF26Field
WEF26
Presenting Digital Impact for Species to Paul Goodenough · WEF26
Contact
Get in touch
Happy to chat about collaborations on research projects and supervision of students.