Global dimming refers to the decrease in surface solar radiation (SSR) observed from the 1960s to the 1980s at different measurement sites all around the world. It is under debate whether anthropogenic aerosols emitted from urban areas close to the measurement sites are mainly responsible for the dimming. In order to assess this urbanization impact on SSR, we use spatially explicit population density data of 0.08° resolution to construct population indices (PI) at 157 high data quality sites. Our study extends previous population-based studies by incorporating distance-weighting as a simple aerosol diffusion model. We measured urbanization in the surrounding of a site as the PI change form 1960 to 1990 and found no negative correlation with the corresponding SSR trends from 1964 to 1989 for the 92 sites in Europe and Japan.
Original Source [2]
Technology Partners: MimirTech
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/global-dimming-and-urbanization-did-stronger-negative-ssr-trends-collocate-regions
[2] http://www.atmos-chem-phys-discuss.net/15/31133/2015/acpd-15-31133-2015.html
[3] http://admin.indiaenvironmentportal.org.in/category/author/imamovic
[4] http://admin.indiaenvironmentportal.org.in/category/author/k-tanaka
[5] http://admin.indiaenvironmentportal.org.in/category/author/d-folini-et-al
[6] http://admin.indiaenvironmentportal.org.in/category/journal/atmospheric-chemistry-and-physics-discussions
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urbanisation
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/population-trends
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/aerosols
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/europe
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/japan
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/russia
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/china
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-radiation
[16] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
