Short-Lived Climate Forcers - MARAMA

Mitigation of Black Carbon• Location of emissions matters for climate: main focus is on emissionsaffecting sensitive regions, such as the Arctic (i.e. emissions north of 40 olatitude) and other ice/snow covered regions (emissions reaching Himalayas)• Black carbon generally emitted (andcontrolled) as part of a pollution mixture– Climate impacts of mitigation depend onco-pollutant changes• Controls on some sources/sectors moreclearly climate beneficial than others (e.g.,mobile diesel vs. open biomass burning)– Ratio of BC to other (cooling) constituentslike organic carbon (OC) varies• Virtually all mitigation options will bebeneficial to public healthU.S. Environmental Protection Agency – Office of Air and Radiation23