Christofer Åström
Biographic Data
| ID | 6569948 |
|---|---|
| NAME | Christofer Åström |
| GIVEN NAMES | Christofer |
| FAMILY NAME | Åström |
| SIGNATURE | ÅSTRÖM C |
| AFFILIATIONS | Umeå University |
| ORCID | 0000-0003-4208-0718 |
| VERIFIED | Yes |
| TOTAL WORKS | 14 |
| TOTAL CITATIONS | 5 |
| AUTHOR COUNT | 14 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2011 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
Neighborhood Tree Canopy Coverage and Building Fraction as Modifiers for Heat-related Mortality among Older Adults in Sweden's Largest Urban Areas
As heat extremes become more frequent due to climate change, heat-related health risks are increasing, particularly among older adults. Within cities, environmental characteristics can modify heat exposure. Using accessible indicators such as tree canopy coverage (TCC) and building fraction (BF) may improve understanding of how residential environments shape heat-related mortality and support equitable climate adaptation. In this study, we examin…
Ozone-related acute excess mortality projected to increase in the absence of climate and air quality controls consistent with the Paris Agreement
Excess mortality attributed to heat and cold
BACKGROUND: Heat and cold are established environmental risk factors for human health. However, mapping the related health burden is a difficult task due to the complexity of the associations and the differences in vulnerability and demographic distributions. In this study, we did a comprehensive mortality impact assessment due to heat and cold in European urban areas, considering geographical differences and age-specific risks. METHODS: We inclu…
Global, regional, and national burden of mortality associated with non-optimal ambient temperatures from 2000 to 2019
BACKGROUND: Exposure to cold or hot temperatures is associated with premature deaths. We aimed to evaluate the global, regional, and national mortality burden associated with non-optimal ambient temperatures. METHODS: In this modelling study, we collected time-series data on mortality and ambient temperatures from 750 locations in 43 countries and five meta-predictors at a grid size of 0·5° × 0·5° across the globe. A three-stage analysis strategy…
The burden of heat-related mortality attributable to recent human-induced climate change
Climate change affects human health; however, there have been no large-scale, systematic efforts to quantify the heat-related human health impacts that have already occurred due to climate change. Here, we use empirical data from 732 locations in 43 countries to estimate the mortality burdens associated with the additional heat exposure that has resulted from recent human-induced warming, during the period 1991-2018. Across all study countries, w…
Ambient Particulate Air Pollution and Daily Mortality in 652 Cities
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: ) with daily all-cause, cardiovascular, and respiratory mortality across multiple countries or regions. Daily data on mortality and air pollution were collected from 652 cities in 24 countries or regions. We used overdispersed generalized additive models with random-effects…
Ozone and heat-related mortality in Europe in 2050 significantly affected by changes in climate, population and greenhouse gas emission
Climate change is expected to increase to extreme temperatures and lead to more intense formation of near-surface ozone. Higher temperatures can cause heat stress and ozone is a highly oxidative pollutant; both increase cardiorespiratory mortality. Using greenhouse gas and ozone precursor emission scenarios, global and regional climate and chemistry-transport models, epidemiological data, and population projections, we projected ozone- and heat-r…
Association between Mortality and Short-Term Exposure to Particles, Ozone and Nitrogen Dioxide in Stockholm, Sweden
In this study, the effects on daily mortality in Stockholm associated with short-term exposure to ultrafine particles (measured as number of particles with a diameter larger than 4 nm, PNC4), black carbon (BC) and coarse particles (PM 2.5−10 ) have been compared with the effects from more common traffic-pollution indicators (PM 10 , PM 2.5 and NO2) and O3 during the period 2000−2016. Air pollution exposure was estimated from measurements at a 20 …
Synergistic Effects of Ambient Temperature and Air Pollution on Health in Europe
We studied the potential synergy between air pollution and meteorology and their impact on mortality in nine European cities with data from 2004 to 2010. We used daily series of Apparent Temperature (AT), measurements of particulate matter (PM 10 ), ozone (O3), and nitrogen dioxide (NO2) and total non-accidental, cardiovascular, and respiratory deaths. We applied Poisson regression for city-specific analysis and random effects meta-analysis to co…
Vulnerability Reduction Needed to Maintain Current Burdens of Heat-Related Mortality in a Changing Climate—Magnitude and Determinants
The health burden from heatwaves is expected to increase with rising global mean temperatures and more extreme heat events over the coming decades. Health-related effects from extreme heat are more common in elderly populations. The population of Europe is rapidly aging, which will increase the health effects of future temperatures. In this study, we estimate the magnitude of adaptation needed to lower vulnerability to heat in order to prevent an…
Changes in the Effect of Heat on Mortality in the Last 20 Years in Nine European Cities. Results from the PHASE Project
The European project PHASE aims to evaluate patterns of change in the temperature-mortality relationship and in the number of deaths attributable to heat in nine European cities in two periods, before and after summer 2003 (1996-2002 and 2004-2010). We performed age-specific Poisson regression models separately in the two periods, controlling for seasonality, air pollution and time trends. Distributed lag non-linear models were used to estimate t…
Developing a Heatwave Early Warning System for Sweden
Over the last two decades a number of heatwaves have brought the need for heatwave early warning systems (HEWS) to the attention of many European governments. The HEWS in Europe are operating under the assumption that there is a high correlation between observed and forecasted temperatures. We investigated the sensitivity of different temperature mortality relationships when using forecast temperatures. We modelled mortality in Stockholm using ob…
Potential Distribution of Dengue Fever Under Scenarios of Climate Change and Economic Development
The opposing effects of climate change and socio-economic development on the global distribution of malaria
The opposing effects of climate change and socio-economic development on the global distribution of malaria
Potential Distribution of Dengue Fever Under Scenarios of Climate Change and Economic Development
Developing a Heatwave Early Warning System for Sweden
Over the last two decades a number of heatwaves have brought the need for heatwave early warning systems (HEWS) to the attention of many European governments. The HEWS in Europe are operating under the assumption that there is a high correlation between observed and forecasted temperatures. We investigated the sensitivity of different temperature mortality relationships when using forecast temperatures. We modelled mortality in Stockholm using ob…
Changes in the Effect of Heat on Mortality in the Last 20 Years in Nine European Cities. Results from the PHASE Project
The European project PHASE aims to evaluate patterns of change in the temperature-mortality relationship and in the number of deaths attributable to heat in nine European cities in two periods, before and after summer 2003 (1996-2002 and 2004-2010). We performed age-specific Poisson regression models separately in the two periods, controlling for seasonality, air pollution and time trends. Distributed lag non-linear models were used to estimate t…
Vulnerability Reduction Needed to Maintain Current Burdens of Heat-Related Mortality in a Changing Climate—Magnitude and Determinants
The health burden from heatwaves is expected to increase with rising global mean temperatures and more extreme heat events over the coming decades. Health-related effects from extreme heat are more common in elderly populations. The population of Europe is rapidly aging, which will increase the health effects of future temperatures. In this study, we estimate the magnitude of adaptation needed to lower vulnerability to heat in order to prevent an…
Synergistic Effects of Ambient Temperature and Air Pollution on Health in Europe
We studied the potential synergy between air pollution and meteorology and their impact on mortality in nine European cities with data from 2004 to 2010. We used daily series of Apparent Temperature (AT), measurements of particulate matter (PM 10 ), ozone (O3), and nitrogen dioxide (NO2) and total non-accidental, cardiovascular, and respiratory deaths. We applied Poisson regression for city-specific analysis and random effects meta-analysis to co…
Ambient Particulate Air Pollution and Daily Mortality in 652 Cities
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: ) with daily all-cause, cardiovascular, and respiratory mortality across multiple countries or regions. Daily data on mortality and air pollution were collected from 652 cities in 24 countries or regions. We used overdispersed generalized additive models with random-effects…
Ozone and heat-related mortality in Europe in 2050 significantly affected by changes in climate, population and greenhouse gas emission
Climate change is expected to increase to extreme temperatures and lead to more intense formation of near-surface ozone. Higher temperatures can cause heat stress and ozone is a highly oxidative pollutant; both increase cardiorespiratory mortality. Using greenhouse gas and ozone precursor emission scenarios, global and regional climate and chemistry-transport models, epidemiological data, and population projections, we projected ozone- and heat-r…
Association between Mortality and Short-Term Exposure to Particles, Ozone and Nitrogen Dioxide in Stockholm, Sweden
In this study, the effects on daily mortality in Stockholm associated with short-term exposure to ultrafine particles (measured as number of particles with a diameter larger than 4 nm, PNC4), black carbon (BC) and coarse particles (PM 2.5−10 ) have been compared with the effects from more common traffic-pollution indicators (PM 10 , PM 2.5 and NO2) and O3 during the period 2000−2016. Air pollution exposure was estimated from measurements at a 20 …
Global, regional, and national burden of mortality associated with non-optimal ambient temperatures from 2000 to 2019
BACKGROUND: Exposure to cold or hot temperatures is associated with premature deaths. We aimed to evaluate the global, regional, and national mortality burden associated with non-optimal ambient temperatures. METHODS: In this modelling study, we collected time-series data on mortality and ambient temperatures from 750 locations in 43 countries and five meta-predictors at a grid size of 0·5° × 0·5° across the globe. A three-stage analysis strategy…
The burden of heat-related mortality attributable to recent human-induced climate change
Climate change affects human health; however, there have been no large-scale, systematic efforts to quantify the heat-related human health impacts that have already occurred due to climate change. Here, we use empirical data from 732 locations in 43 countries to estimate the mortality burdens associated with the additional heat exposure that has resulted from recent human-induced warming, during the period 1991-2018. Across all study countries, w…
Excess mortality attributed to heat and cold
BACKGROUND: Heat and cold are established environmental risk factors for human health. However, mapping the related health burden is a difficult task due to the complexity of the associations and the differences in vulnerability and demographic distributions. In this study, we did a comprehensive mortality impact assessment due to heat and cold in European urban areas, considering geographical differences and age-specific risks. METHODS: We inclu…
Ozone-related acute excess mortality projected to increase in the absence of climate and air quality controls consistent with the Paris Agreement
Neighborhood Tree Canopy Coverage and Building Fraction as Modifiers for Heat-related Mortality among Older Adults in Sweden's Largest Urban Areas
As heat extremes become more frequent due to climate change, heat-related health risks are increasing, particularly among older adults. Within cities, environmental characteristics can modify heat exposure. Using accessible indicators such as tree canopy coverage (TCC) and building fraction (BF) may improve understanding of how residential environments shape heat-related mortality and support equitable climate adaptation. In this study, we examin…
Geography (13 works) · Climate Change and Health Impacts (12 works) · Environmental health (10 works) · Medicine (10 works) · Air Quality and Health Impacts (9 works) · Environmental Science (9 works) · Ecology (8 works) · Population (8 works) · Climate change (7 works) · Global Health Care Issues (7 works)