Research underconstruction
Contents
- 1 Sources of Chinese air pollutants
- 2 Volatile organic compounds (VOCs): global and regional emissions and impacts
- 3 Secondary organic aerosols (SOA)
- 4 Chemistry-Climate interactions
- 5 Measurements of Chinese PM2.5 composition
- 6 Air-sea exchange of organic matters
- 7 Chemistry-Climate Model (CCM) development
- 8 Long-range transport of pollutants
Sources of Chinese air pollutants
Team members: Nan LI, Yue JIAN, Heng TIAN, Hansen CAO, Tzung-May FU
Publication: Fu et al. (2012)
Publication:
Publication:
Volatile organic compounds (VOCs): global and regional emissions and impacts
Team members: Hansen CAO, Heng TIAN Volatile organic compounds (VOC) is an important class of atmospheric constituents, impacting the production of ozone, the oxidation power of the atmosphere, the lifetime of other green house gases and pollutants, and the production of organic aerosols.
VOCs are emitted into the atmosphere from both natural and anthropogenic activities, and quantifying these many overlapping sources can be a challenge. We use satellite observations of formaldehyde (HCHO), an oxidation product of many VOCs, to make 'top-down' estimates of VOC emissions from each source.
Publication: Fu et al. [2007], Millet et al. [2007], Palmer et al. [2006]
Publication: Fu et al. [2007], Millet et al. [2007], Palmer et al. [2006]
Secondary organic aerosols (SOA)
Secondary organic aerosols (SOA) are the organic mass transferred into the particulate phase in the atmosphere. Many recent observations have found SOA concentrations to be much higher than can be explained by current models in most parts of the atmosphere.
Using a global 3-D atmospheric chemistry model, we investigate the missing source of SOA. In particular, we find that the heteorogeneous uptake of dicarbonyls in aeorsols and clouds can help explained the observed SOA concentrations and variability.
Team members: Nan LI, Li XING, Tzung-May FU
Publication: Fu et al. (2012)
Publication: Li et al. (2013)
Publication: Xing et al. (2013)
Chemistry-Climate interactions
Team members: Jinxuan CHEN, Yaping MA, Wanying KANG, Aoxing ZHANG
Measurements of Chinese PM2.5 composition
Team members: Wei XU, Jinxuan CHEN, Heng TIAN, Aoxing ZHANG
Air-sea exchange of organic matters
Team members: Cenlin HE, Tzung-May FU
Oxygenated VOCs (OVOCs), including acetone, methanol, etc, are present in high concentrations throughout the atmosphere. Their abundance and distribution have large impacts on the oxidation power of the troposphere, particularly in remote regions.
The budgets of OVOCs are not well understood. One of the major sources of uncertainty is whether the ocean acts as a source or a sink to the atmosphere. The air/sea exchange is complexly regulated by both physical and biological conditions at the interface. We propose a new air/sea transfer module to account for these physical and biological processes, including the presence of microfilms, production/consumption of organic matter by marine life, and other photochemical processes.
Chemistry-Climate Model (CCM) development
Team member: Ye QING
Publication:
Long-range transport of pollutants
Team member: Yue JIAN
Publication: Jian and Fu (2014)
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