Author(s): Pozzer A, Zimmermann P, Doering U, Van Aardenne J, Tost H, et al.
The atmospheric chemistry general circulation model EMAC has been used to estimate the impact of anthropogenic emission changes on global and regional air quality in recent and future years (2005, 2010, 2025 and 2050). The emission scenario assumes that population and economic growth largely determine energy and food consumption and consequent pollution sources with the current technologies ("business as usual"). This scenario is chosen to show the effects of not implementing legislation to prevent additional climate change and growing air pollution, other than what is in place for the base year 2005, representing a pessimistic (but plausible) future.
By comparing with recent observations, it is shown that the model reproduces the main features of regional air pollution distributions though with some imprecisions inherent to the coarse horizontal resolution (~100 km) and simplified bottom-up emission input.
To identify possible future hot spots of poor air quality, a multi pollutant index (MPI), suited for global model output, has been applied. It appears that East and South Asia and the Middle East represent such hotspots due to very high pollutant concentrations, while a general increase of MPIs is observed in all populated regions in the Northern Hemisphere. In East Asia a range of pollutant gases and fine particulate matter (PM2.5) is projected to reach very high levels from 2005 onward, while in South Asia air pollution, including ozone, will grow rapidly towards the middle of the century. Around the Persian Gulf, where natural PM2.5 concentrations are already high (desert dust), ozone levels are expected to increase strongly.
The population weighted MPI (PW-MPI), which combines demographic and pollutant concentration projections, shows that a rapidly increasing number of people worldwide will experience reduced air quality during the first half of the 21st century. Following this business as usual scenario, it is projected that air quality for the global average citizen in 2050 would be almost comparable to that for the average citizen in East Asia in the year 2005, which underscores the need to pursue emission reductions.
Referred From: https://acp.copernicus.org/articles/12/6915/2012/
Author(s): Yoshida M, Takashima Y, Inoue M, Iwasaki M, Otani T, et al.
Author(s): Aguirre R, May JM
Author(s): Harding AH, Wareham NJ, Bingham SA, Khaw K, Luben R, et al.
Author(s): Godic A, Poljšak B, Adamic M, Dahmane R
Author(s): Tyrrell RM
Author(s): Chen L, Hu JY, Wang SQ
Author(s): Mikirova NA, Casciari JJ, Riordan NH
Author(s): Casciari JJ, Riordan NH, Schmidt TL, Meng XL, Jackson JA, et al.
Author(s): Juan Du, Joseph J. Cullena, Garry R. Buettner
Author(s): Murray JC, Burch JA, Streilein RD, Lannacchione MA, Hall RP, et al.
Author(s): Mohammed BM, Fisher BJ, Kraskauskas D, War S, Wayne JS, et al.
Author(s): Desneves KJ, Todorovic BE, Cassar A, Crowe TC
Author(s): Blass SC, Goost H, Tolba RH, Stoffel-Wagner B, Kabir K, et al.
Author(s): Oresajo C, Stephens T, Hino PD, Law RM, Yatskayer M, et al.
Author(s): Mohammed B, Fisher BJ, Kraskauskas D, War S, Wayne JS, et al.
Author(s): Savini I, Catani MV, Rossi A, Duranti G, Melino G, et al.
Author(s): Uchida Y, Behne M, Quiec D, Elias PM, Holleran WM
Author(s): Sram RJ, Binkova B, Rossner P
Author(s): Bruno RS, Leonard SW, Atkinson J, Montine TJ, Ramakrishnan R, et al.
Author(s): Lin FH, Lin JY, Gupta RD, Tournas JA, Burch JA, et al.
Author(s): Anitra CC, Silvia M
Author(s): Huijskens MJ, Walczak M, Koller N, Briede JJ, Senden-Gijsbers BL, et al.
Author(s): Huijskens MJ, Walczak M, Sarkar S, Atrafi F, Senden-Gijsbers BL, et al.
Author(s): Boura P, Tsapas G, Papadopoulou A, Magoula I, Kountouras G
Author(s): Matsui MS, Hsia A, Miller JD, Hanneman K, Scull H, et al.
Author(s): Hagel AF, Layritz CM, Hagel WH, Hagel HJ, Hagel E, et al.