copd英文课件】air quality, climate change and public health

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,*,Air Quality,Climate Change Training Module,Air Quality, Climate Change and Public Health,Minnesota Climate and Health Program,Minnesota Department of Health,Environmental Impacts Analysis Unit,October 2012,625 Robert Street North,PO Box 64975,St. Paul, MN 55164-0975,Notice,MDH developed this presentation based on scientific research published in peer-reviewed journals. References for information can be found in the relevant slides and/or at the end of the presentation.,2,Outline,Introduction to Air Quality and Public Health,Climate Changes in MN,Climate Change and Air Quality,Particulate matter,Ground-level ozone,Allergens,Public Health/Government Strategies,3,Air Quality and Public Health,History,In,the twelfth century,air pollution,was already associated with urban environments,and their,higher population,densities,1948, Donora, PA smog event:,20 dead, 4,000 hospitalized,1952, “Great Smog”,in,London,England,4,000+ excess deaths during 5 day event (Dec 5 9, 1952),12,000+ excess deaths estimated due to persisting effects between Dec 1952 Feb 1953,4,London, Dec 5-9, 1952,Donora, Oct 26-29, 1948,Air Quality and Public Health,Air quality has been improving,From 2001 to 2012:,Ground-level ozone,is,13% lower,Y,ear-round,particle pollution is,24% lower,Short-term,particle pollution is,28% lower,However, we still have a ways to go,Health impacts occur at lower levels of air pollutants than previously thought,41,% of U.S. population lives in,counties that have unhealthful levels of either,ground-level ozone or,particle,pollution,Ramsey County received an “F” in the American Lung Association 2012 State of the Air report for short-term particle pollution,5,Air Quality and Public Health,6,People can be affected by poor air quality,because of,exposure,and/or,sensitivity,Persons affected due to exposure:,Certain occupations,such as professional,drivers (trucks, taxis), parking lot attendants, construction workers and others living and working near pollution,sources,Athletes,and outdoor workers on high pollution days,Persons affected due to sensitivity:,Have existing health conditions:,Asthma,Chronic,Obstructive,Pulmonary,Disease (COPD,),Heart,disease,Allergies,Young children,Elderly,Introduction to Air Quality and Public Health,Climate Changes in Minnesota,Climate Changes and Air Quality,Particulate matter,Ground-level ozone,Allergens,Public Health/Government Strategies,7,8,Weather versus Climate,Weather: conditions of the atmosphere over a short period of time,Climate: conditions of the atmosphere over long periods of time (30-year standard averaging period),Climate Changes,9,There have been three recent significant observed climate trends in Minnesota:,The average temperature is increasing,The average number of days with a high dew point may be increasing,The character of precipitation is changing,Climate Changes: Temperature,10,Temperature has been rising in Minnesota.,Climate Changes: Temperature,11,Three significant observations in this overall warming:,Winter temperatures have been rising about twice as fast as annual average temperatures,Minimum or overnight low temperatures have been rising faster than the maximum temperature, or daytime high,Since the early 1980s, the temperature has risen slightly over 1F in southern Minnesota to a little over 2F in much of the northern part of the state,Climate Changes: Dew Point,12,Dew point definition: Dew point is a measure of water vapor in the air,The higher the dew point, the more difficult it is for peoples sweat to evaporate, which is how we cool ourselves,The number of days with high dew point temperatures ( 70,F) may be increasing in Minnesota,Climate Changes: Dew Point,13,Source: Dr. Mark Seeley, Climatologist, University of Minnesota,Climate Changes: Precipitation,14,On average, the total precipitation in the state has increased since the Dust Bowl era of the 1930s.,Climate Changes: Precipitation,15,The character of precipitation in Minnesota is changing,More localized, heavy precipitation events,Potential to cause both increased flooding and drought,Climate Changes,What do the trends mean?,Extreme Weather:,Increased extreme heat events and reduced cooling overnight,Increased intense, localized storms and flooding,Increased localized drought and fires,Changing ecosystems:,Earlier ice out,Earlier flowering and longer growing season,16,Climate Change,17,Climate changes have not only brought Minnesota an earlier growing season but changes in the types of plants that will thrive here,Outline,Introduction to Air Quality and Public Health,Climate Change in Minnesota,Climate Change and Air Quality,Particulate matter,Ground-level ozone,Allergens,Public Health/Government Strategies,18,Climate Change and Air Quality,One study estimates that each one degree Celsius (1.8F) increase in temperature would cause about 1,000 additional deaths in the US associated with air pollution.,(Jacobson, 2008),19,Climate Change and Air Quality,Climate change may affect exposures to air pollutants by:,Creating both more windiness and more air stagnation events,Increasing temperatures which . . .,Increase pollution from fossil fuel,combustion to meet electricity demand for increased air conditioner,use,Increase production of natural sources of air pollutant emissions,Increase formation of,ground-level ozone,Lengthening the,allergy season,creating more potent allergens,20,Outline,Introduction to Air Quality and Public Health,Climate Change in Minnesota,Climate Change and Air Quality,Particulate matter,Ground-level ozone,Allergens,Public Health/Government Strategies,21,Particulate Matter,Particulate matter is a major pollutant for which concentrations are anticipated to be affected by climate change, and is therefore emphasized for public health impacts.,Particulate matter comes in different sizes (coarse and fine) from a number of sources including:,D,ust and other small particles from construction, mining and agriculture,P,ollen,F,ine particles from burning fossil fuels in factories, power plants, and diesel- and gasoline-powered motor vehicles,22,Particulate Matter,Particulate matter (PM) can have serious health impacts,Effects of acute,exposure :,Short-term decrease in lung function,Exacerbation of respiratory,and cardiovascular diseases,Hospitalizations and deaths,Effects of long term exposure:,Respiratory and cardiovascular diseases,Cardiopulmonary and lung cancer deaths,23,Potential health effects of PM exposure, increased risk of:,impaired respiratory function,chronic cough,bronchitis,chest illness,chronic obstructive pulmonary disease (COPD),pneumonia,cardiovascular diseases,allergic disease and asthma,cardiopulmonary diseases,cancer,Particulate Matter,Populations at risk of health effects from particulate matter,At risk from exposure,:,Persons living or working in,urban areas, especially near high-traffic corridors and/or stationary sources of PM (such as factories or power plants),At risk from sensitivity,:,Persons,with respiratory and cardiovascular,diseases,Elderly,and,children,Persons,with asthma and/or allergies,24,Particulate Matter,Climate change may affect exposures to PM by:,Increasing,emissions from fossil fuel-fired power,plants due to demand,for electricity,for,cooling,Increasing,natural,sources of,air pollutant emissions,Wildfire smoke induced,by drought and heat,25,Particulate Matter,26,2011 Boundary Waters Canoe Area wildfire burned nearly 145 square miles and costs reached $21 million. Smoke and ash spread as far as northeast Wisconsin and Traverse City, Michigan.,(MPR News, 2011),Outline,Introduction to Air Quality and Public Health,Climate Change in Minnesota,Climate Change and Air Quality,Particulate matter,Ground-level ozone,Allergens,Public Health/Government Strategies,27,Ground-Level Ozone,Ground-level ozone is a main pollutant for which concentrations are anticipated to be affected by climate change, and is therefore emphasized for public health impacts.,Ground-level ozone is formed by the reaction of volatile organic compounds (VOCs) and nitrogen oxide (NO,x,) in the presence of sunlight and heat.,28,Source: American Lung Association,Ground-Level Ozone,Ground-level ozone exposure is linked to harmful respiratory conditions and cardiopulmonary impacts,Short-term exposure to elevated ozone can lead to hospitalizations or death,Long-term exposure to lower levels of ozone can decrease lung function, and may also cause new-onset asthma,Elevated ozone levels can exacerbate other conditions, such as asthma and allergies,29,Ground-Level Ozone,Populations at risk of health effects from ground-level ozone:,At risk from exposure,:,Healthy,people, especially athletes and outdoor workers in landscape and construction who may be exposed to higher levels of ozone for longer periods of,time on high pollution days,At risk from sensitivity,:,Persons,with respiratory and cardiovascular,diseases,Older,adults and children,30,Ground-Level Ozone,Climate change could significantly increase summertime ground-level ozone by:,Increasing,temperatures,Creating stagnant air conditions,Affecting,natural sources of air pollutant emissions (biogenic VOCs,),Overall, increase,poor air quality index (AQI),days,Effect is most likely during the summer months, downwind of urban areas,31,Minnesota Pollution Control Agency,Air Quality Index,/,Outline,Introduction to Air Quality and Public Health,Climate Change in Minnesota,Climate Change and Air Quality,Particulate matter,Ground-level ozone,Allergens,Public Health/Government Strategies,32,Allergens,33,An allergy is the bodys immune system overreacting to certain substances,Common allergens that may be affected by climate changes include:,Pollen,Mold,Approximately 25 million Americans suffer from hay fever (allergic rhinitis),It costs approximately $11.2 billion per year to treat allergic rhinitis in the U.S.,Giant Ragweed plant,Source: Mary Jelks, MD, AAAAI,Allergens,Allergens can affect persons with allergies and asthma,Allergens can interact,with,air pollution to amplify their individual effects:,When ground-level ozone levels are high, it takes much less ragweed pollen to trigger an asthmatic or allergic response,Particulate matter also increases allergic responses by extending how long the allergens stay in the body,34,Climate Change Impacts on Pollen,35,Temperature,Carbon dioxide,Precipitation,Climate change impacts on pollen:,Increased pollen production, longer pollen,season,increased potency,airborne allergens,Proliferation of weedy plant species that are known producers of allergenic pollen,Introduction of new allergen-producing plant species,Allergens: Pollen,36,Allergenic pollen will be worse in urban areas: up to 7x higher than surrounding rural areas,Minneapolis has already experienced a 16 day increase in length of ragweed pollen season from 1995 to 2009,Check pollen report at,/,Allergens: Pollen,37,Source: National Wildlife Federation, 2010,Allergens: Mold,Mold growth,is enhanced,by moisture,Increase in precipitation/floods,Increase,in temperature and/or humidity,Increase in plant growth/plant biomass decay (leaf litter),Improper installation or management of air conditioning systems can create conditions ripe for mold,Mold can cause coughing,wheezing, nasal and throat,conditions, and adversely affect,persons with asthma or,weakened immune systems,38,Extensive mold contamination of ceiling and walls,(Source Terry Brennan, :/),Outline,Introduction to Air Quality and Public Health,Climate Change in Minnesota,Climate Change and Air Quality,Particulate matter,Ground-level ozone,Allergens,Public Health/Government Strategies,39,Public Health/Govt Strategies,Mitigation,Effective policies to mitigate,health impacts from exposure,to air pollutants focus on the,reduction of air pollutant,emissions,Reduce production of harmful air pollutants,Improve energy efficiency,Use alternatives to fossil fuels,Reduce combustion of fossil fuels,Reduce urban heat island effect,Maintain green,space,40,Example of urban heat island mitigation:,Target Center Green Roof,Minneapolis, MN,Public Health/Govt Strategies,Adaptation,Policies/strategies to adapt to health impacts from exposure to air pollutants include:,Monitor AQI days,Promote awareness,Support public health tracking of diseases such as asthma and allergic disease,Utilize low allergenic pollen producing plants for,landscaping,41,Summary,Minnesotas climate is changing:,Increases in temperature,Increases in high dew point temperatures,Increases in extreme precipitation events,Climate changes will likely increase:,Particulate matter,Formation of ozone,Pollen and mold,Certain populations are at greater risk from exposure to pollution and allergens, especially those,with existing respiratory and cardiovascular,conditions, the elderly, and children,Public health awareness, education and coordinated mitigation planning with other agencies can reduce the health impacts,42,Thank You,Questions?,43,Contact Minnesota Climate and Health Program:,651-201-4893,651-201-5759 TTY,October 3, 2012,Acknowledgements,44,This work was supported by cooperative agreement 5UE1EH000738 from the Centers for Disease Control and Prevention,Special thanks to the following people for their contributions to the creation of this training module:,Wendy Brunner, Minnesota Department of Health,Hillary Carpenter, Minnesota Department of Health,Anne Claflin, Minnesota Pollution Control Agency,Gregory Pratt, Minnesota Pollution Control Agency,Naomi Shinoda,Minnesota Department of Health,References,45,Amann, Swart, Raes, Tuinstra. 2004. 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Department of Natural Resources Division of Ecological and Water Resources and the University of Minnesota Department of Soil, Water, and Climate. Available online:,Dew Point ( :/climate.umn.edu/doc/twin_cities/mspdewpoint.htm),Dew Point July 19, 2011 Technical Analysis),Tager IB, Balmes J, Lurmann F, Ngo L, Alcorn S, and Kenzli N. 2005. Chronic Exposure to Ambient Ozone and Lung Function in Young Adults.,Epidemiology 2005; 16:751-759.,Union of Concerned Scientists. 2011. Climate Change and Your Health: Rising Temperatures, Worsening Ozone Pollution. Available online: .,References,47,U.S. EPA. 2003. Ozone: good up high, bad nearby. Office of Air and Radiation. EPA-451/K-03-001 . :/,. EPA. 2008. A Review of the Impact of Climate Variability and Change on Aeroallergens and Their Associated Effects (Final Report). U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-06/164F, 2008. Available online:,U.S. EPA. 2011. Chronic Obstructive Pulmonary Disease Prevalence and Mortality. Accessed online May 8, 2012: :/,. EPA. 2012. Ground-level ozone: Health effects. Accessed May 8, 2012:,Western Regional Climate Center. (WRCC) 2011a. Minnesota Temperature 1890 2010: 12 month period ending in December. Generated online November 2011. Available online:,Western Regional Climate Center. (WRCC) 2011b. Minnesota Precipitation 1890 2010: 12 month period ending in December. Generated online November 2011. Available online:,Zandlo, Jim 2008. Observing the climate. Minnesota State Climatology Office. Available online:,Ziska L, et al. 2011. Recent warming by latitude associated with increased length of ragweed pollen season in central North America. PNAS vol 108 no 10.,Photo Credits,48,Slide 4: Top image of Donora, PA smog event of 1948 from Prints and Photographs Collection, History of Medicine Division, National Library of Medicine, as cited in Helfand et al. 2001. “Donora , Pennsylvania: An Environmental Disaster of the 20th Century,” American Journal of Public Health Vol 91, No 4, pp553. Bottom image of London, UK smog event of 1952 from Wikipedia “Great Smog”, available online: :/,Slide 6: Image source Microsoft Clip Art,Slide 8: Image source