Climate Change and Air Quality in Southeastern China : Hong Kong Study

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)12_Chapter in an edited book (Author)peer-review

6 Scopus Citations
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Detail(s)

Original languageEnglish
Title of host publicationClimate Change and Air Pollution
Subtitle of host publicationThe Impact on Human Health in Developed and Developing Countries
EditorsRais Akhtar, Cosimo Palagiano
PublisherSpringer International Publishing AG
Pages181-196
ISBN (Electronic)9783319613468
ISBN (Print)9783319613451
Publication statusPublished - 2 Jan 2018

Publication series

NameSpringer Climate
ISSN (Print)2352-0698
ISSN (Electronic)2352-0701

Abstract

As climate change continues to unfold over the next several decades in response to increasing levels of greenhouse gases (GHGs) in the atmosphere, the effects of climate change and future air quality will be more noticeable and observable. Understanding future climate and air quality has become one of the highest priorities for many countries and individual cities, where mitigation and adaptation could be planned. In Hong Kong, local government has pledged to reduce the GHG emissions by 60–65% from the 2005 level (i.e., 40 million tonnes CO2 equivalent (CO2e) in 2005) by 2030. The reduction focuses mainly on local energy saving, alternative transportation, and green energy generation. As Hong Kong moves into less carbon-intense technologies in both transportation and energy sectors, this much needed change will benefit the city’s local air quality. Currently, no long-term carbon reduction plan for 2050 has been identified in the government.

In terms of future air quality projections, strong relationships between emissions and pollutant concentrations have been observed in Southeastern China under the IPCC AR5 scenarios, where the reduction of regional emissions (e.g., SO2, NOx, and PM) has a great effect on future PM2.5 air quality. Overall, PM2.5 air quality over Pearl River Delta region has shown a clear improvement in 2050 under RCP8.5 emission scenario, with a mean concentration reduction of 5–15% (up to 12 μg/m3). For ozone, a slight increase (i.e., 0–3%) of annual mean has been projected, which may be due to the combined effect of slow emission reduction of NMVOCs and less NOx titration in the VOCs limited regime. In addition, some studies also projected the increase of typhoons tracking near Taiwan Strait in the future climate would increase the occurrence of summer ozone episodes in Hong Kong.

Research Area(s)

  • Climate change, Carbon reduction, Hong Kong, Future air quality, O3, PM2.5, Tropical cyclone

Citation Format(s)

Climate Change and Air Quality in Southeastern China : Hong Kong Study. / Lam, Yun Fat.

Climate Change and Air Pollution: The Impact on Human Health in Developed and Developing Countries. ed. / Rais Akhtar; Cosimo Palagiano. Springer International Publishing AG, 2018. p. 181-196 (Springer Climate).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)12_Chapter in an edited book (Author)peer-review