CLIMATE AND HEALTH COUNTRY PROFILE – 2015 GHANA
OVERVIEW Ghana, with a population of 26 million, has abundant natural resources that have played an important role in the agricultural, industrial, economic and social development of the country. However, Ghana faces a number of risks due to climate change, including frequency and intensity of extreme weather events increasing the risk of flood, landslides, drought and heat stress. This could subsequently intensify existing challenges of poverty, food insecurity and infectious and vector-borne diseases.
baseline of under 2 deaths per 100,000 annually between 1961 and 1990. A rapid reduction in emissions could limit heat-related deaths in the elderly to about 14 deaths per 100,000 in 2080.
OPPORTUNITIES FOR ACTION Ghana has an approved national health adaptation strategy and is currently implementing projects on health adaptation to climate change. In addition, Ghana is taking action to build institutional and technical capacities to work on climate change and health and to increase the climate resilience of health infrastructure. Country reported data (see section 6) indicate there remain opportunities for action in the following areas:
SUMMARY OF KEY FINDINGS • Under a high emissions scenario, mean annual temperature is projected to rise by about 4.8°C on average from 1990 to 2100. If emissions decrease rapidly, the temperature rise is limited to about 1.2°C. • Under a high emissions scenario, and without large investments in adaptation, an average of 241,900 people are projected to be affected by flooding due to sea level rise every year between 2070 and 2100. If emissions decrease rapidly and there is a major scale up in protection (i.e. continued construction/raising of dikes) the population affected by flooding could be limited to about 200 people. Adaptation alone will not offer sufficient protection, as sea level rise is a long-term process, with high emissions scenarios bringing increasing impacts well beyond the end of the century. • Under a high emissions scenario heat-related deaths in the elderly (65+ years) are projected to increase to almost 70 deaths per 100,000 by 2080 compared to the estimated
1) Adaptation • Conduct a national assessment of climate change impacts, vulnerability and adaptation for health. • Estimate the costs of implementing health resilience to climate change.
2) Mitigation • Conduct valuation of co-benefits to health of climate change mitigation policies. • Adopt a national climate change strategy that includes consideration of the health implications of climate change mitigation in sectors such as agriculture, transport, energy and manufacturing.
3) National policy response • Nominate a national focal point for climate change in the Ministry of Health.
DEMOGRAPHIC ESTIMATES Population (2013)a Population growth rate (2013)a Population living in urban areas (2013)b Population under five (2013)a Population aged 65 or older (2013)a 26 million 2.4% 52.7% 14.8 3.5 1,857 USD 5.4% NA 0.573 63 years 67 e United Nations Development Programme, Human Development Reports (2014) f Global Health Observatory, WHO; 2014 g Levels & Trends in Child Mortality Report 2015,The UN Inter-agency Group for Child Mortality Estimation (2015)
ECONOMIC AND DEVELOPMENT INDICATORS GDP per capita (current US$, 2013)c Total expenditure on health as % of GDP (2013)d Percentage share of income for lowest 20% of population (2012)c HDI (2013, +/- 0.01 change from 2005 is indicated with arrow)e
HEALTH ESTIMATES Life expectancy at birth (2013)f Under-5 mortality per 1000 live births (2013)g a b c d World Population Prospects: The 2015 Revision, UNDESA (2015) World Urbanization Prospects: The 2014 Revision, UNDESA (2014) World Development Indicators, World Bank (2015) Global Health Expenditure Database, WHO (2014)
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CURRENT AND FUTURE CLIMATE HAZARDS
Due to climate change, many climate hazards and extreme weather events, such as heat waves, heavy rainfall and droughts, could become more frequent and more intense in many parts of the world. Outlined here are country–specific projections up to the year 2100 for climate hazards under a ‘business as usual’ high emissions scenario compared to projections under a ‘two-degree’ scenario with rapidly decreasing global emissions. Most hazards caused by climate change will persist for many centuries.
COUNTRY-SPECIFIC CLIMATE HAZARD PROJECTIONS The model projections below present climate hazards under a high emissions scenario, Representative Concentration Pathway 8.5 [RCP8.5] (in orange) and a low emissions scenario, [RCP2.6] (in green).a The text boxes describe the projected changes averaged across about 20 models (thick line). The figures also show each model individually as well as the 90% model range (shaded) as a measure of uncertainty and, where available, the annual and smoothed observed record (in blue).b,c
MEAN ANNUAL TEMPERATURE 34 32
DAYS OF WARM SPELL (‘HEAT WAVES’)
300
°C
30 34 28 32
Days
200 100 300 200 0 100 1900 1950 2000 2050 2100
°C
26 30 28 1900 26 1950 2000 2050 2100
Days
Year
Under a high emissions scenario, mean annual temperature is projected to rise by about on average 1990 to 2100. 1900 19504.8°C 2000 2050from 2100 If emissions decrease rapidly, the temperature rise is limited to about 1.2°C. Year 30
0 Under a high emissions scenario, the number of days of warm spelld is projected increase 2000 from about 10 days in 1990 to 1900 to 1950 2050 2100 about 280 days on average in 2100. If emissions decrease rapidly, the days of warm spell are limited Yearto about 85 on average. 120 100 CONSECUTIVE DRY DAYS (‘DROUGHT’)
Year
DAYS WITH 25 EXTREME RAINFALL (‘FLOOD RISK’)
Days
20 30 15 25 10 20 5 15 0 10 5 0 1900 1950 1900 1950 2000 2050 2100
Days 120 60 100 40 80 20 60 0 40 20 0 2050 2100 1900 1950 1900 1950 2000 2050 2100
80
Days
Days
Year 2000
Year 2000 2050 2100
Year Under a high emissions scenario, the number of days with very heavy precipitation (20 mm or more) could increase by about 4 days on average from 1990 to 2100, increasing the risk of floods. A few models indicate increases well outside the range of historical variability, implying even greater risk. If emissions decrease rapidly, the increase in risk is much reduced.
Year Under both high and low emissions scenarios, the longest dry spell is not indicated to change much from an average of about 80 days, with continuing large year-to-year variability.
a b c d
Model projections are from CMIP5 for RCP8.5 (high emissions) and RCP2.6 (low emissions). Model anomalies are added to the historical mean and smoothed. Observed historical record of mean temperature is from CRU-TSv.3.22. Analysis by the Climatic Research Unit and Tyndall Centre for Climate Change Research, University of East Anglia, 2015. A ‘warm spell’ day is a day when maximum temperature, together with that of at least the 6 consecutive previous days, exceeds the 90th percentile threshold for that time of the year. 2
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CURRENT AND FUTURE HEALTH RISKS DUE TO CLIMATE CHANGE
Human health is profoundly affected by weather and climate. Climate change threatens to exacerbate today’s health problems – deaths from extreme weather events, cardiovascular and respiratory diseases, infectious diseases and malnutrition – whilst undermining water and food supplies, infrastructure, health systems and social protection systems.
EXPOSURE TO FLOODING DUE TO SEA LEVEL RISE Severity of climate change scenario Without Adaptation 178,700 241,900 With Adaptation 200 400
KEY IMPLICATIONS FOR HEALTH In addition to deaths from drowning, flooding causes extensive indirect health effects, including impacts on food production, water provision, ecosystem disruption, infectious disease outbreak and vector distribution. Longer term effects of flooding may include posttraumatic stress and population displacement.
* Medium ice melting scenario
RCP8.5
RCP2.6
** Values rounded to nearest ‘00
Under a high emissions scenario, and without large investments in adaptation, an average of 241,900 people are projected to be affected by flooding due to sea level rise every year between 2070 and 2100. If emissions decrease rapidly and there is a major scale up in protection (i.e. continued construction/raising of dikes) the population affected by flooding could be limited to about 200 people. Adaptation alone will not offer sufficient protection, as sea level rise is a long-term process, with high emissions scenarios bringing increasing impacts well beyond the end of the century. Source: Human dynamics of climate change, technical report, Met Office, HM Government, UK, 2014.
KEY IMPLICATIONS FOR HEALTH Some of the worlds most virulent infections are also highly sensitive to climate: temperature, precipitation and humidity have a strong influence on the life-cycles of the vectors and the infectious agents they carry and influence the transmission of water and foodborne diseases.a Socioeconomic development and health interventions are driving down burdens of several infectious diseases, and these projections assume that this will continue. However, climate conditions are projected to become significantly more favourable for transmission, slowing progress in reducing burdens, and increasing the populations at risk if control measures are not maintained or strengthened.b For example, in 2008, there were an estimated 9,100 diarrhoeal deaths in children under 15 years old. Under a high emissions scenario, diarrhoeal deaths attributable to climate change in children under 15 years old is projected to be about 10.1% of the nearly 5,900 diarrhoeal deaths projected in 2030. Although diarrhoeal deaths are projected to decline to about 3,200 deaths by 2050 the proportion of deaths attributable to climate change will rise to approximately 14.4% (Source: Lloyd, S., 2015).c
INFECTIOUS AND VECTOR-BORNE DISEASES Population at risk of malaria in Ghana (in millions) 70 Population at risk (millions) 60 50 40 30 20 10 0 Baseline 1961–1990 2021–2050 2041–2070 RCP2.6 RCP8.5
By 2070, under both high and low emissions scenarios, over 58 million people are projected to be at risk of malaria. Population growth can cause increases in the population at risk in areas where malaria presence is static in the future. Source: Rocklöv, J., Quam, M. et al. 2015.c
Mean relative vectorial capacity for dengue fever transmission in Ghana Mean relative vectorial capacity 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0 Baseline 1961–1990 RCP2.6 RCP8.5 2021–2050 RCP2.6 RCP8.5 2041–2070
Under a high emissions scenario, the mean relative vectorial capacity for dengue tranmission is projected to increase from about 0.73 to almost 0.80 under both high and low emissions scenarios. Source: Rocklöv, J., Quam, M. et al., 2015c
a Atlas of Health and Climate, World Health Organization and World Meteorological Organization, 2012. b Quantitative risk assessment of the effects of climate change on selected causes of death, 2030s and 2050s. Geneva: World Health Organization, 2014. c Country-level analysis, completed in 2015, was based on health models outlined in the Quantitative risk assessment of the effects of climate change on selected causes of death, 2030s and 2050s. Geneva: World Health Organization, 2014. The mean of impact estimates for three global climate models are presented. Models assume continued socioeconomic trends (SSP2 or comparable). 3
HEAT-RELATED MORTALITY Heat-related mortality in population 65 years or over, Ghana (deaths / 100,000 population 65+ years) 80 Deaths/100,000 population 65+ years 70 60 50 40 30 20 10 0 Baseline 1961–1990 RCP2.6 RCP8.5 RCP2.6 RCP8.5 RCP2.6 RCP8.5 2030 2050 2080
KEY IMPLICATIONS FOR HEALTH Climate change is expected to increase mean annual temperature and the intensity and frequency of heat waves resulting in a greater number of people at risk of heat-related medical conditions. The elderly, children, the chronically ill, the socially isolated and at-risk occupational groups are particularly vulnerable to heat-related conditions.
Under a high emissions scenario heat-related deaths in the elderly (65+ years) are projected to increase to almost 70 deaths per 100,000 by 2080 compared to the estimated baseline of under 2 deaths per 100,000 annually between 1961 and 1990. A rapid reduction in emissions could limit heat-related deaths in the elderly to about 14 deaths per 100,000 in 2080. Source: Honda et al., 2015.a
HEAT STRESS AND LABOUR PRODUCTIVITY Annual daily work hours lost in relation to change in global mean temperature, Ghana (%) 30% 25% 20% 15% 10% 5% 0% 0 1 2 3 4 5 Increase in global mean temperature (C) Heavy labour Moderate labour Light labour
Labour productivity is projected to decline signifcantly under a high emissions scenario. If global mean temperature rises 4 degrees, about 25% of annual daily work hours is projected to be lost by workers carrying out heavy labour (e.g. agricultural, construction and some industrial workers). Source: Kjellstrom, T. et al., 2015 http://www.climatechip.org/
UNDERNUTRITION Climate change, through higher temperatures, land and water scarcity, flooding, drought and displacement, negatively impacts agricultural production and causes breakdown in food systems. These disproportionally affect those most vulnerable to hunger and can lead to food insecurity. Vulnerable groups risk further deterioration into food and nutrition crises if exposed to extreme weather events.b Without considerable efforts made to improve climate resilience, it has been estimated that the risk of hunger and malnutrition globally could increase by up to 20 percent by 2050.b In Ghana, the prevalence of child malnutrition in children under age 5 is 13.4% (2011).c
a Country-level analysis, completed in 2015, was based on health models outlined in the Quantitative risk assessment of the effects of climate change on selected causes of death, 2030s and 2050s. Geneva: World Health Organization, 2014. The mean of impact estimates for three global climate models are presented. Models assume continued socioeconomic trends (SSP2 or comparable). b World Food Project 2015 https://www.wfp.org/content/two-minutes-climate-change-and-hunger c World Health Organization, Global Database on Child Growth and Malnutrition [2015 edition]. Child malnutrition estimates are for % underweight, defined as: Percentage of children aged 0–59 months who are below minus two standard deviations from median weight-for-age of the World Health Organization (WHO) Child Growth Standards.
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CURRENT EXPOSURES AND HEALTH RISKS DUE TO AIR POLLUTION
Many of the drivers of climate change, such as inefficient and polluting forms of energy and transport systems, also contribute to air pollution. Air pollution is now one of the largest global health risks, causing approximately seven million deaths every year. There is an important opportunity to promote policies that both protect the climate at a global level, and also have large and immediate health benefits at a local level.
OUTDOOR AIR POLLUTION EXPOSURE Outdoor air pollution for Accra, Ghana annual mean PM2.5 (μg/m3) 2008 WHO annual mean PM2.5 guideline value (10 μg/m3) annual mean PM2.5, μg/m3 60 50 40 30 20 10 0 Accra
KEY IMPLICATIONS FOR HEALTH Outdoor air pollution can have direct and sometimes severe consequences for health. Fine particles which penetrate deep into the respiratory tract subsequently increase mortality from respiratory infections, lung cancer, and cardiovascular disease.
The most recent air quality data available for Accra is from the year 2008. At that time, Accra had an annual mean PM2.5 level of 49.3, above the WHO guideline value of 10 µg/m3. Source: Ambient Air Pollution Database, WHO, May 2014.
HOUSEHOLD AIR POLLUTION Ghana Percentage of population primarily using solid fuels for cooking (%), 2013
>95 Source: Global Health Observatory, data repository, World Health Organization, 2013.
RURAL AREAS
70
URBAN AREAS
NATIONAL TOTAL
83
Percent of total deaths from ischaemic heart disease, stroke, lung cancer, chronic obstructive pulmonary disease (18 years +) and acute lower respiratory infections (under 5 years) attributable to household air pollution, 2012.
KEY IMPLICATIONS FOR HEALTH Air pollution in and around the home is largely a result of the burning of solid fuels (biomass or coal) for cooking. Women and children are at a greater risk for disease from household air pollution. Consequently, household air pollution is responsible for a larger proportion of the total number of deaths from ischaemic heart disease, stroke, lung cancer and COPD in women compared to men.a In Ghana, 59% percent of an estimated 7,100 child deaths due to acute lower respiratory infections is attributable to household air pollution (WHO, 2012).
Total Deaths: 38,800 (45%) Attributable to household air pollution
Source: Global Health Observatory, data repository, World Health Organization, 2012. a Annu. Rev. Public. Health. 2014.35:185-206. http://www.who.int/phe/health_topics/outdoorair/databases/HAP_BoD_results_March2014.pdf?ua=1
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CO-BENEFITS TO HEALTH FROM CLIMATE CHANGE MITIGATION: A GLOBAL PERSPECTIVE
Health co-benefits are local, national and international measures with the potential to simultaneously yield large, immediate public health benefits and reduce the upward trajectory of greenhouse gas emissions. Lower carbon strategies can also be cost-effective investments for individuals and societies. Presented here are examples, from a global perspective, of opportunities for health co-benefits that could be realised by action in important greenhouse gas emitting sectors.a
Transport Transport injuries lead to 1.2 million deaths every year, and land use and transport planning contribute to the 2–3 million deaths from physical inactivity. The transport sector is also responsible for some 14% (7.0 GtCO2e) of global carbon emissions. The IPCC has noted significant opportunities to reduce energy demand in the sector, potentially resulting in a 15%–40% reduction in CO2 emissions, and bringing substantial opportunities for health: A modal shift towards walking and cycling could see reductions in illnesses related to physical inactivity and reduced outdoor air pollution and noise exposure; increased use of public transport is likely to result in reduced GHG emissions; compact urban planning fosters walkable residential neighborhoods, improves accessibility to jobs, schools and services and can encourage physical activity and improve health equity by making urban services more accessible to the elderly and poor.
Electricity Generation Reliable electricity generation is essential for economic growth, with 1.4 billion people living without access to electricity. However, current patterns of electricity generation in many parts of the world, particularly the reliance on coal combustion in highly polluting power plants contributes heavily to poor local air quality, causing cancer, cardiovascular and respiratory disease. Outdoor air pollution is responsible for 3.7 million premature deaths annually, 88% of these deaths occur in low and middle income countries. The health benefits of transitioning from fuels such as coal to lower carbon sources, including ultimately to renewable energy, are clear: Reduced rates of cardiovascular and respiratory disease such as stroke, lung cancer, coronary artery disease, and COPD; cost-savings for health systems; improved economic productivity from a healthier and more productive workforce.
Household Heating, Cooking and Lighting Household air pollution causes over 4.3 million premature deaths annually, predominantly due to stroke, ischaemic heart disease, chronic respiratory disease, and childhood pneumonia. A range of interventions can both improve public health and reduce household emissions: a transition from the inefficient use of solid fuels like wood and charcoal, towards cleaner energy sources like liquefied petroleum gas (LPG), biogas, and electricity could save lives by reducing indoor levels of black carbon and other fine particulate matter; where intermediate steps are necessary, lower emission transition fuels and technologies should be prioritized to obtain respiratory and heart health benefits; women and children are disproportionately affected by household air pollution, meaning that actions to address household air pollution will yield important gains in health equity; replacing kerosene lamps with cleaner energy sources (e.g. electricity, solar) will reduce black carbon emissions and the risk of burns and poisoning.
Healthcare Systems Health care activities are an important source of greenhouse gas emissions. In the US and in EU countries, for example, health care activities account for between 3–8% of greenhouse gas (CO2-eq) emissions. Major sources include procurement and inefficient energy consumption. Modern, on-site, low-carbon energy solutions (e.g. solar, wind, or hybrid solutions) and the development of combined heat and power generation capacity in larger facilities offer significant potential to lower the health sector’s carbon footprint, particularly when coupled with building and equipment energy efficiency measures. Where electricity access is limited and heavily reliant upon diesel generators, or in the case of emergencies when local energy grids are damaged or not operational, such solutions can also improve the quality and reliability of energy services. In this way, low carbon energy for health care could not only mitigate climate change, it could enhance access to essential health services and ensure resilience.
In Ghana, by 2030, an estimated 4,900 annual premature deaths due to outdoor air pollution may be avoided and near-term climate change mitigated by implementing 14 short lived climate pollutant reduction measures. Source: Shindell, D., et al, Science, 2012.
a For a complete list of references used in the health co-benefits text please see the Climate and Health Country Profile Reference Document, http://www.who.int/globalchange/en/
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EMISSIONS AND COMMITMENTS
Global carbon emissions increased by 80% from 1970 to 2010, and continue to rise.a,b Collective action is necessary, but the need and opportunity to reduce greenhouse gas emissions varies between countries. Information on the contribution of different sectors, such as energy, manufacturing, transport and agriculture, can help decision-makers to identify the largest opportunities to work across sectors to protect health, and address climate change.
Ghana ANNUAL GREENHOUSE GAS EMISSIONS (metric tonnes CO2 equivalent) 20,000,000
Metric tonnes CO2 equivalent
1990 2006
16,000,000
12,000,000
A 2ºC upper limit of temperature increase relative to pre-industrial levels has been internationally agreed in order to prevent severe and potentially catastrophic impacts from climate change. Reductions are necessary across countries and sectors. In order to stay below the 2ºC upper limit it is estimated that global annual CO2-energy emissions, currently at 5.2 tons per capita, need to be reduced to 1.6 tons per capita.c
8,000,000
4,000,000
0 Energy Industries Manufacturing and Construction Transport Agriculture
Waste
Other
Total excl LULUCF/LUCF
The most recent greenhouse gas emissions data available for Ghana is from the year 2006. At that time, carbon emissions were increasing across sectors, with the largest contributions from the agriculture and transport sector. Through intersectoral collaboration, the health community can help to identify the best policy options not only to eventually stabilize greenhouse gas emissions, but also to provide the largest direct benefits to health. Source: UNFCCC Greenhouse Gas Data Inventory, UNFCCC (2015).
NATIONAL RESPONSE d
1992 2003 2010 2011
GHANA SIGNED THE UNFCCC GHANA RATIFIED THE KYOTO PROTOCOL GHANA IDENTIFIES NATIONALLY APPROPRIATE MITIGATION ACTIONS GHANA RENEWABLE ENERGY ACT NATIONAL ACTION PLAN ON CLIMATE CHANGE
a Boden, T.A., G. Marland, and R.J. Andres (2010). Global, Regional, and National Fossil-Fuel CO2 Emissions. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. doi 10.3334/CDIAC/00001_V2010. b IPCC (2014) Blanco G., R. Gerlagh, S. Suh, J. Barrett, H.C. de Coninck, C.F. Diaz Morejon, R. Mathur, N. Nakicenovic, A. Ofosu Ahenkora, J. Pan, H. Pathak, J. Rice, R. Richels, S.J. Smith, D.I. Stern, F.L. Toth, and P. Zhou, 2014: Drivers, Trends and Mitigation. In: Climate Change 2014: Mitigation of Climate Change. Contribution of Working Group III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Edenhofer, O., R. Pichs-Madruga, Y. Sokona, E. Farahani, S. Kadner, K. Seyboth, A. Adler, I. Baum, S. Brunner, P. Eickemeier, B. Kriemann, J. Savolainen, S. Schlömer, C. von Stechow, T. Zwickel and J.C. Minx (eds.)]. Cambridge University Press, Cambridge, United Kingdom c Pathways to deep decarbonization, Sustainable development Solutions Network, 2014 report. d Columbia Law School, 'Climate Change Laws Of The World'. N.p., 2015.
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NATIONAL POLICY RESPONSE
The following table outlines the status of development or implementation of climate resilient measures, plans or strategies for health adaptation and mitigation of climate change (reported by countries).a
GOVERNANCE AND POLICY Country has identified a national focal point for climate change in the Ministry of Health Country has a national health adaptation strategy approved by relevant government body The National Communication submitted to UNFCCC includes health implications of climate change mitigation policies
HEALTH ADAPTATION IMPLEMENTATION Country is currently implementing projects or programmes on health adaptation to climate change Country has implemented actions to build institutional and technical capacities to work on climate change and health Country has conducted a national assessment of climate change impacts, vulnerability and adaptation for health Country has climate information included in Integrated Disease Surveillance and Response (IDSR) system, including development of early warning and response systems for climate-sensitive health risks Country has implemented activities to increase climate resilience of health infrastructure
FINANCING AND COSTING MECHANISMS Estimated costs to implement health resilience to climate change included in planned allocations from domestic funds in the last financial biennium Estimated costs to implement health resilience to climate change included in planned allocations from international funds in the last financial biennium
HEALTH BENEFITS FROM CLIMATE CHANGE MITIGATION The national strategy for climate change mitigation includes consideration of the health implications (health risks or co-benefits) of climate change mitigation actions Country has conducted valuation of co-benefits of health implications of climate mitigation policies
a Supporting monitoring efforts on health adaptation and mitigation of climate change: a systematic approach for tracking progress at the global level. WHO survey, 2015.
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