Open AccessUrban/industrial pollution for the New York City–Washington, D. C., corridor, 1996–1998: 2. A study of the efficacy of the Montreal Protocol and other regulatory measures
Author(s) -
Barnes Diana H.,
Wofsy Steven C.,
Fehlau Brian P.,
Gottlieb Elaine W.,
Elkins James W.,
Dutton Geoffrey S.,
Montzka Stephen A.
Publication year - 2003
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2001jd001117
Subject(s) - montreal protocol , environmental science , trace gas , kyoto protocol , air pollution , atmosphere (unit) , pollution , greenhouse gas , air pollutants , atmospheric sciences , environmental protection , meteorology , geography , ozone , chemistry , ozone layer , geology , ecology , oceanography , organic chemistry , biology
Background concentrations, emission rates, and trends in emission rates for five trace gases are inferred for the northeastern United States from continuous atmospheric observations at Harvard Forest in central New England for 1996–1998. Mixing ratios of gases regulated by the Montreal Protocol (CFC‐11 (CCl 3 F), CFC‐12 (CCl 2 F 2 ), CFC‐113 (CCl 2 F‐CClF 2 ), CH 3 CCl 3 , and halon‐1211 (CBrClF 2 )) are referenced to CO and PCE (perchloroethylene, tetrachloroethene, C 2 Cl 4 ) to determine their urban/industrial source strengths and to test existing estimates of U.S. emissions. Despite the full imposition by 1996 of the Montreal Protocol ban on production by developed countries, our data show that significant releases to the atmosphere continue and that only emissions of CFC‐12 and CH 3 CCl 3 declined in the region during this period. A broader historical and geographical study of emissions reveals that from 1986 to 1996 the international treaty has reduced U.S. emissions of CFC‐11, CFC‐12, CFC‐113, and CH 3 CCl 3 by 87%, 70%, 93%, and 87%, respectively, but current trends suggest persistent emissions for many years following.