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Aerosol exposure versus aerosol cooling of climate: what is the optimal emission reduction strategy for human health?

Löndahl, Jakob LU ; Swietlicki, Erik LU ; Lindgren, E. and Loft, S. (2010) In Atmospheric Chemistry and Physics 10(19). p.9441-9449
Abstract
Particles, climate change, and health have thought-provoking interactions. Air pollution is one of the largest environmental problems concerning human health. On the other hand, aerosol particles can have a cooling effect on climate and a reduction of those emissions may result in an increased temperature globally, which in turn may have negative health effects. The objective of this work was to investigate the "total health effects" of aerosol emissions, which include both exposure to particles and consequences for climate change initiated by particles. As a case study the "total health effect" from ship emissions was derived by subtracting the number of deaths caused by exposure with the estimated number of lives saved from the cooling... (More)
Particles, climate change, and health have thought-provoking interactions. Air pollution is one of the largest environmental problems concerning human health. On the other hand, aerosol particles can have a cooling effect on climate and a reduction of those emissions may result in an increased temperature globally, which in turn may have negative health effects. The objective of this work was to investigate the "total health effects" of aerosol emissions, which include both exposure to particles and consequences for climate change initiated by particles. As a case study the "total health effect" from ship emissions was derived by subtracting the number of deaths caused by exposure with the estimated number of lives saved from the cooling effect of the emissions. The analysis showed that, with current level of scientific understanding, it could not be determined whether ship emissions are negative or positive for human health on a short time scale. This first attempt to approximate the combined effect of particle emissions on health shows that reductions of particulate air pollution will in some cases (black carbon) have win-win effects on health and climate, but sometimes also cause a shift from particle exposure-related health effects towards an increasing risk of health consequences from climate change. Thus, measures to reduce aerosol emissions have to be coupled with climate change mitigation actions to achieve a full health benefit on a global level. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Atmospheric Chemistry and Physics
volume
10
issue
19
pages
9441 - 9449
publisher
Copernicus Gesellschaft Mbh
external identifiers
  • wos:000283066300014
  • scopus:77957795724
ISSN
1680-7324
DOI
10.5194/acp-10-9441-2010
project
MERGE
language
English
LU publication?
yes
id
f4e60973-cb6b-48b1-b771-ed7f781079b7 (old id 1721170)
date added to LUP
2010-12-06 09:57:46
date last changed
2018-06-24 03:10:49
@article{f4e60973-cb6b-48b1-b771-ed7f781079b7,
  abstract     = {Particles, climate change, and health have thought-provoking interactions. Air pollution is one of the largest environmental problems concerning human health. On the other hand, aerosol particles can have a cooling effect on climate and a reduction of those emissions may result in an increased temperature globally, which in turn may have negative health effects. The objective of this work was to investigate the "total health effects" of aerosol emissions, which include both exposure to particles and consequences for climate change initiated by particles. As a case study the "total health effect" from ship emissions was derived by subtracting the number of deaths caused by exposure with the estimated number of lives saved from the cooling effect of the emissions. The analysis showed that, with current level of scientific understanding, it could not be determined whether ship emissions are negative or positive for human health on a short time scale. This first attempt to approximate the combined effect of particle emissions on health shows that reductions of particulate air pollution will in some cases (black carbon) have win-win effects on health and climate, but sometimes also cause a shift from particle exposure-related health effects towards an increasing risk of health consequences from climate change. Thus, measures to reduce aerosol emissions have to be coupled with climate change mitigation actions to achieve a full health benefit on a global level.},
  author       = {Löndahl, Jakob and Swietlicki, Erik and Lindgren, E. and Loft, S.},
  issn         = {1680-7324},
  language     = {eng},
  number       = {19},
  pages        = {9441--9449},
  publisher    = {Copernicus Gesellschaft Mbh},
  series       = {Atmospheric Chemistry and Physics},
  title        = {Aerosol exposure versus aerosol cooling of climate: what is the optimal emission reduction strategy for human health?},
  url          = {http://dx.doi.org/10.5194/acp-10-9441-2010},
  volume       = {10},
  year         = {2010},
}