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SAGE Health Task Team

Health Task Team

The SAGE Health Task Team explores how sub-seasonal to seasonal (S2S) forecasts can support health preparedness and climate-sensitive risk management. The team connects climate prediction, public-health research, early warning, epidemiological modelling, and operational climate services to examine links between S2S information and heat stress, infectious disease risk, emergency planning, and health-system resilience. Its role within SAGE is to identify where forecast information can support earlier public-health action, strengthen communication of uncertainty, and improve climate-informed preparedness for health risks that evolve over weeks to seasons.

SAGE Health Task Team

Scope and Priorities

Heat-health preparedness

Explore how S2S information can support heat-stress monitoring, early warning, and public-health readiness.

Climate-sensitive infectious disease risks

Connect forecast information with infectious disease surveillance, vector-borne disease preparedness, and health risk modelling.

Emergency planning

Identify where forecasts at weekly to seasonal timescales can support health-sector preparedness and emergency-response decisions.

User needs and decision contexts

Work with public health agencies, researchers, humanitarian actors, and operational climate service providers to understand actionable forecast needs.

Uncertainty communication

Improve how forecast uncertainty, skill, and limits are communicated for health preparedness decisions.

Capacity and climate services

Support climate service approaches that strengthen health resilience and practical use of climate information.

SAGE Health Task Team

Current and Planned Activities

01

S2S health applications review

A review of past and current applications of subseasonal to seasonal (S2S) forecasts for health, identifying key use cases, operational examples, and research gaps.

02

Expert and stakeholder engagement

Interviews with researchers, public health agencies, climate service providers, and operational users to understand current practice, user needs, and barriers to S2S adoption.

03

Practitioner survey

An international survey of climate and health practitioners to assess awareness, current use of S2S forecasts, decision-making needs, and priorities for future climate services.

04

Forecast visualisation assessment

Compilation and evaluation of existing S2S forecast visualisations and communication approaches, with a focus on clarity, uncertainty communication, and health decision support.

05

Climate and health community of practice

Development of links with international climate and health initiatives through collaborative activities to strengthen knowledge exchange and identify opportunities for operational implementation.

SAGE Health Task Team

Expected Outputs

Scoping review of S2S for health

A review summarising the current evidence base, applications, and research priorities for using S2S forecasts in climate-sensitive health decision-making.

Report on operational opportunities

A report describing where S2S forecasts can support health preparedness, early warning, emergency planning, and climate-informed public health services.

Survey and interview synthesis

A summary of stakeholder perspectives, user requirements, and recommendations for improving the uptake of S2S information across the health sector.

Forecast visualisation repository

A curated collection of examples illustrating different approaches to communicating S2S forecast information for health applications, including good practice for uncertainty communication.

Workshops and knowledge exchange

Organisation of webinars, workshops, and knowledge exchange sessions to share findings, build partnerships between the climate and health communities, and support the development of future collaborative activities.

Health Task Team

Members

Open the team directory, then select an individual member to view more information.

Team members are shown with the affiliation and country information provided in the Health Task Team document. Select a member for biography, expertise, contact information and profile links where provided.

Rachel Lowe
Rachel LoweBSC · SpainLead
Expertise
Climate-sensitive disease early warning, global health resilience, climate and health modelling, infectious disease preparedness, and policy-relevant climate services.
Biography
Rachel Lowe is an ICREA Research Professor and Global Health Resilience Group Leader at the Barcelona Supercomputing Center. Her research focuses on co-developing policy-relevant methodological solutions to enhance surveillance, preparedness, and response to climate-sensitive disease outbreaks and emergence. She obtained a PhD in Mathematics from the University of Exeter and has held postdoctoral roles at the International Centre for Theoretical Physics and the Catalan Institute for Climate Sciences. Her work integrates seasonal climate forecasts into early warning systems for infectious diseases in Latin America, the Caribbean, and Southeast Asia, and she has advised impact-based forecasting projects for the Red Cross and Médecins Sans Frontières. She coordinates Wellcome Trust and Horizon Europe projects on digital technology, climate, and health, and is a lead author of the IPCC AR7 health and well-being chapter.
Contact
rachel.lowe@bsc.es
Profile
https://www.bsc.es/lowe-rachel
Tilly Alcayna
Tilly AlcaynaRed Cross Red Crescent Climate Centre · The NetherlandsMember
Expertise
Anticipatory humanitarian action, climate-sensitive infectious disease early warning systems, impact-based forecasting, climate change adaptation, operations and programming.
Biography
Tilly is the Senior Technical Adviser for Health & Climate at the Red Cross Red Crescent Climate Centre. She has over twelve years’ research and operational experience in global health, climate change adaptation, epidemiology, environmental health, disaster preparedness, and climate finance. Previously she has worked for Médecins Sans Frontières and the Harvard Humanitarian Initiative. She co-leads the global thematic working group on Anticipatory Action for Health hosted by the Anticipation Hub. She holds a PhD in Public Health & Epidemiology from the London School of Hygiene and Tropical Medicine with a focus on anticipatory action for climate-sensitive infectious diseases.
Contact
alcayna@climatecentre.org
Avriel Diaz
Avriel DiazGCSE · USAMember
Expertise
Planetary Health, Climate Services, Implementation, Partnership Development, Systems Thinking
Biography
Avriel Díaz is a planetary health scientist and Executive Director of the Global Council for Science and the Environment (GCSE), where she leads initiatives that bridge science, policy, and practice to advance healthier people through a more sustainable planet. Her work focuses on building equitable partnerships that translate scientific evidence into scalable, real-world solutions for climate, environmental, and public health challenges, bringing together governments, researchers, communities, philanthropy, and the private sector to co-produce and implement evidence-based approaches that strengthen resilience and improve decision-making. Dr. Díaz earned her Ph.D. in Earth and Environmental Sciences from Columbia University, where her research advanced climate services for health decision-making. She serves as Co-Lead of the Climate Adaptation Working Group for the Lancet Countdown Latin America. She also holds a B.S. from the SUNY College of Environmental Science and Forestry in Aquatic and Marine Sciences and a Master's degree from Columbia University in Ecology, Evolution and Conservation Biology.
Contact
avriel@gcseglobal.org
Profile
https://www.linkedin.com/in/avrielrdiaz/
Chloe Fletcher
Chloe FletcherBSC · SpainMember
Biography
Chloe Fletcher is a PhD candidate within the Global Health Resilience group at the Barcelona Supercomputing Center and the Biomedicine program in the Department of Medicine and Life Sciences at Universitat Pompeu Fabra. Her PhD focuses on the development of statistical models to forecast outbreaks of climate-sensitive infectious diseases across endemic settings, including Latin America and the Caribbean, and South and Southeast Asia, and the co-production of operational early warning systems. Chloe holds an MSc in Environmental Modelling, and a BSc in Mathematics, obtained from University College London.
Contact
chloe.fletcher@bsc.es
Profile
https://www.bsc.es/fletcher-chloe
Emma Roberts
Emma RobertsBSC · SpainMember
Biography
Emma Roberts is a Research Data Scientist at the Global Health Resilience Group of the Barcelona Supercomputing Center. She holds a Master of Science in Risk, Disaster, and Resilience from University College London and a Bachelor of Science in Natural Resources Conservation from the University of British Columbia. Her work at the BSC focuses on the creation of harmonised datasets and dashboards for climate and health decision-support tools.
Contact
emma.roberts@bsc.es
Profile
https://www.bsc.es/roberts-emma
Roche Mahon
Roche MahonCIMH · BarbadosMember
Biography
Dr. Roché Mahon is the Social Science lead for the inter-disciplinary Climate Services programme of the World Meteorological Organization’s Regional Climate Centre for the Caribbean hosted at the Caribbean Institute for Meteorology and Hydrology (CIMH). In this role, she works with a regional Consortium of climate and sectoral experts to co-design, co-develop and co-deliver tailored climate information products and services for six climate-sensitive sectors in 16 Caribbean countries. Dr. Mahon is a Contributing Author to Chapter 15 (Small Islands) of Working Group II‘s contribution to the IPCC’s Sixth Assessment Report. Roché is a Commonwealth Scholar (2010-2013) who received her Ph.D. in Environmental Management with a focus on disaster risk management and climate change adaptation from Lincoln University in Christchurch, New Zealand.
Contact
rmahon@cimh.edu.bb
Thea Turkington
Thea TurkingtonCentre for Climate Research Singapore · SingaporeMember
Expertise
Subseasonal to seasonal prediction, ENSO, monsoons, capacity building, climate services, particularly in Southeast Asia
Biography
Dr Thea Turkington is Head of the Seasonal and Subseasonal Prediction Branch at the Centre for Climate Research Singapore, within the Department of Climate Research. She leads the development of subseasonal-to-seasonal (S2S) predictions and related climate services for Singapore and the broader Southeast Asia region, including early warning applications for heatwaves and dengue prediction. Beyond her work at CCRS, Dr Turkington is actively engaged with the World Meteorological Organization, particularly in advancing climate services across the South-West Pacific Region. She also serves as co-chair of the CLIVAR/GEWEX Monsoons Panel.
Contact
Thea_TURKINGTON@nea.gov.sg
Profile
https://ccrs.weather.gov.sg/our-people/thea-turkington/
Simon Mason
Simon MasonSEI · USAMember
Expertise
Climate services, forecasting, forecast verification, climate data and models, statistical methods, early warning systems, and climate information products.
Biography
Simon Mason, Ph.D., is a Senior Scientist with SEI US. He is an international award-winning climatologist with more than 35 years of experience. He has worked with the UN, humanitarian agencies, foundations and the private sector across the globe providing his climate expertise. He works closely with the World Meteorological Organization to set and implement international standards in forecasting. Simon holds a bachelor’s degree in Geography from University of Oxford, a Ph.D. in Climatology from University of the Witwatersrand in Johannesburg, South Africa, and an honorary D.Sc. from the University of Pretoria, South Africa. He most recently served as Chief Climate Scientist at Columbia University’s International Research Institute for Climate and Society.
Contact
simon.mason@sei.org
Profile
https://www.sei.org/people/simon-mason/
Anna Stewart Ibarra
Anna Stewart IbarraGCSEMember
Biography
Anna is an expert on climate and health in Latin America and the Caribbean and her research has focused on understanding climate, environment and social drivers of vector borne diseases and other dimensions of human well being in Latin America and the Caribbean. She received her PhD in ecology from the State University of New York College of Environmental Science and Forestry (SUNY ESF) and Masters in Public Administration from the Maxwell School of Citizenship and Public Affairs at Syracuse University.
Contact
anna@gcseglobal.org
Tatiana Marrufo
Tatiana MarrufoINS · MozambiqueMember
Expertise
Epidemiology, Climate- sensitive disease early warning system, and health resilience.
Biography
Marrufo is the Coordinator of the Health and Environment Program, including Occupational Health at the National Public Health Institute in Mozambique. Marrufo is a Medical Doctor with more than 17 years of experience in the National Health Service and National Research System, having coordinated the Climate, Environment and Health National Observatory, and the Technical Secretariat of the National Health Observatory. She is currently the Chair of the thematic sub-group on Resilience and Adaptation as part of the Public Health Emergencies Group at the level of the Ministry of Health, as part of her duties as the Ministry of Health Focal Point for climate related issues. She is also the Co-Chair of the Thematic sub-group of Climate Change and Public Health at the International Association of the National Public Health Institutes. Marrufo has a master's degree in Public Health with a focus on Environmental Health and she currently is a PhD candidate in Ecology and Environmental Health at University Fernando Pessoa in Portugal.
Contact
tatiana.marrufo@ins.gov.mz
Profile
www.linkedin.com/in/tatiana-marrufo-3aa95035
Caio Coelho
Caio CoelhoINPE · BrazilMember
Expertise
Subseasonal and seasonal prediction, calibration, combination, verification, operational climate prediction, and capacity building.
Biography
Dr. Caio Coelho is a senior research scientist at the Center for Weather Forecast and Climate Studies of the National Institute for Space Research in Brazil. He has research and operational experience in subseasonal and seasonal predictions produced with numerical global climate models, including development of methodological procedures for calibration, combination, and verification of these predictions. He has been actively involved in several international projects and activities coordinated by the World Meteorological Organization and through the World Weather Research Programme and World Climate Research Programme. His work spans research, prediction-product development, operational climate prediction implementation, and capacity building, providing expertise that links health-sector preparedness with robust forecast methods and operational climate services.
Contact
caio.coelho@inpe.br
Profiles
CPTEC profile · Google Scholar
Joy Shumake-Guillemot
Joy Shumake-GuillemotWMO · SwitzerlandMember
Biography
Joy Shumake-Guillemot leads the WHO/WMO Joint Office for Climate and Health in Geneva Switzerland. She is an environmental health scientist and public health practitioner who has worked with WHO, WMO, UNICEF and others to develop public health policy and programming for climate adaptation and risk management. For over a decade, she has been working at the interface of WMO and WHO to accelerate the availability, access and use of climate and weather information that can improve public health policy and practice. Joy received her MSc in Environment and International Development Policy from the University of East Anglia (UK) and Doctor of Public Health in Environmental Health Sciences from Johns Hopkins University (USA).
Contact
jshumake-guillemot@wmo.int
Cristiana Stan
Cristiana StanGeorge Mason University · USAMember
Expertise
Climate modelling, predictability of tropical and midlatitude variability, MJO, ENSO, teleconnections, and ML/AI methods for climate data analysis.
Biography
Professor Cristiana Stan was appointed as a member of the WCRP Joint Scientific Committee in 2023 and as Vice-Chair in 2025. She is also Co-chair of the MJO and Teleconnections subproject of the WWRP/WCRP/S2S Prediction Project. She holds a Bachelor of Science in Physics and a Master of Science in Atmospheric Physics from the University of Bucharest, and received her PhD in Atmospheric Science from Colorado State University for theoretical work in geophysical fluid dynamics. Her research focuses on climate modelling and the large-scale dynamics and predictability of tropical and midlatitude variability. Her group studies cloud representation in tropical cyclone activity, monsoon circulations, the Madden-Julian Oscillation, ENSO under current and future climate conditions, tropical-extratropical teleconnections, and subseasonal-to-seasonal variability of the extratropics. She is also involved in ML/AI methods for climate data analysis.
Contact
cstan@gmu.edu
Profile
https://mason.gmu.edu/~cstan/
Ousmane Ndiaye
Ousmane NdiayeACMAD · NigerMember
Expertise
African Center of Meteorological Applications for Development (ACMAD)
Biography
Dr Ousmane Ndiaye is the Director General of African Center of Meteorogical Application for Development (ACMAD). Previously, Ousmane served as the director of Senegalese meteorological service at the Agency of Civil Aviation and Meteorology (ANACIM). His expertise lies in climate prediction and its application. He coordinated the creation of a district level multi-pluri-disciplinary working group (GTP) in Senegal to deliver climate information to farmers and fishermen for their better preparedness. Recently, he has responded to the needs of the health community by working to enhance the national heatwave early warning system and heat risk information. He is a contributing author in the 6th IPCC report (Working Group I). He is a board member of the Global Heat Health Information Network (GHHIN), the Rockefeller Foundation’s Expert Advisors Group, the Sub-seasonal Applications for Agriculture and Environment (SAGE) Health Task Team, the AIM for Scale Technical Panel on Farmer-Centered Weather Information, member of the stakeholder Advisory Group for the African-European Earth Observation mission and a member of the AGU Global Engagement Committee. He was awarded the honor of commander of the order of Senegalese nation for advancing climate services.
Contact
ousmane.ndiaye@acmad.org
Profile
https://acmad.org/index.php/director-general/
Hunter Jones
Hunter JonesWMO · SwitzerlandMember
Expertise
climate, health, biostatistics, vector-borne disease, heat
Biography
Hunter M. Jones, PhD, leads Climate Services for Health at the WHO-WMO Climate and Health Joint Office in Geneva, where he works to formalize climate services for health as an operational discipline, building the institutional partnerships between meteorological and health services that translate forecast information into earlier public-health action, from heatwave response to vector-borne disease control. His background spans both research and operational practice at the intersection of climate and health: his PhD examined Bayesian ecological modeling of West Nile virus transmission in Culex pipiens mosquitoes, he completed an Embassy Science Fellowship on developing forecasting capacity for dengue in Costa Rica, and he previously led NOAA's National Integrated Heat Health Information System, where seasonal and sub-seasonal heat outlooks informed public health preparedness. This combination of experience — forecasting, epidemiological modeling, and the operational realities of turning climate information into health action — aligns closely with the Health Task Team's work connecting S2S forecasts to health preparedness and climate-informed decision-making.
Contact
hjones@wmo.int
Profile
https://orcid.org/0000-0003-4588-3911
Victor Marchezini
Victor MarcheziniCEMADEN · BrazilMember
Expertise
people-centered early warning systems, disaster risk management
Biography
Victor Marchezini is a sociologist at the Brazilian Early Warning and Monitoring Center of Natural Hazards (Cemaden/MCTIC), a professor and advisor at the Doctorate Program on Earth System Science, National Institute for Space Research (PGCST/INPE), and at the Graduate Program on Disaster Science (ICT/Unesp – Cemaden/MCTIC), Brazil. He was awarded a post-doctoral scholarship from São Paulo Research Foundation (Fapesp) to be a visiting scholar at the Natural Hazards Center/University of Colorado-Boulder from July 2022 to June 2023. Over the past 22 years, Marchezini has focused on the social studies of disasters. He also has experience in action research projects, such as the Elos Project, which gathered 1,993 municipal civil defense units in Brazil, as part of an international cooperation between the National Secretariat of Civil Defense and the United Nations Development Project (UNDP). In September 2023 he started a new five-year project called COPE (Capacities of Organizations to Cope with Extreme Events). He is also co-chair of the SAGE (Subseasonal Applications for Agriculture and Environment), an interdisciplinary project of the World Weather Research Programme (WWRP/WMO), and of the BRIC-BAC project, which is part of the BRICS STI Framework Programme.
Contact
victor.marchezini@cemaden.gov.br
Profile
www.linkedin.com/in/victor-marchezini-5b69b21b
Steven Woolnough
Steven WoolnoughReading University · United KingdomMember
Biography
Professor Steve Woolnough is Professor of Climate Science (NCAS) and Principal Research Fellow in the Department of Meteorology at the University of Reading, United Kingdom. He leads the Tropical Weather Group, advancing our understanding and simulation of tropical phenomena on scales ranging from individual convective cells to large-scale monsoon circulations and atmosphere–ocean coupled modes of variability, with a particular focus on the Madden–Julian Oscillation, South and East Asian monsoons, African rainfall, and Maritime Continent variability. With over 100 peer-reviewed publications, Professor Woolnough has made significant contributions to sub-seasonal to seasonal prediction science and climate services. His work investigates the predictability and dynamics of tropical convection, extreme rainfall, and atmosphere–ocean interactions, underpinning advances in operational forecasting systems and tailored climate services. He has published in leading journals such as the Journal of Climate, the Quarterly Journal of the Royal Meteorological Society, and Frontiers in Climate. His expertise spans climatology, meteorology, and atmospheric sciences, including the study of convective processes, Rossby waves, and the diurnal cycle of convection. By integrating numerical modelling, observational diagnostics, and co-production of climate services, his research supports decision-making in sectors ranging from agriculture to disaster risk reduction.
Contact
s.j.woolnough@reading.ac.uk
Profile
https://research.reading.ac.uk/meteorology/people/steve-woolnough/
Further reading

Related Resources

Book chapter

Tompkins, A. M., Lowe, R., Nissan, H., Martiny, N., Roucou, P., Thomson, M. C., & Nakazawa, T. (2026). Predicting climate impacts on health at subseasonal-to-seasonal timescales. In A. W. Robertson & F. Vitart (Eds.), Sub-seasonal to seasonal prediction: The gap between weather and climate forecasting (2nd ed., pp. 721–752). Elsevier. DOI

Knowledge repository

WHO-WMO ClimaHealth website