View source for Research underconstruction


=Sources of Chinese air pollutants=
Team members: [[Nan LI]], [[Yue JIAN]], [[Heng TIAN]], [[Hansen CAO]], [[Tzung-May FU]]

{{Box|type=l_red_light|text='''Carbonaceous aerosols in China: top-down constraints on primary sources and estimation of secondary contribution''' 

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{{:Papers:Fu_et_al_2012}}
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{{Box|type=l_red_light|text='''Constraining the primary sources of carbonaceous aerosols in the PRD region of China'''

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Li et al., in preparation.
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{{Box|type=l_red_light|text='''Constraints on the historical black carbon emissions from China (1850-2000)'''

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Jian et al., in progress.
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=Volatile organic compounds (VOCs): global and regional emissions and impacts=
Team members: [[Hansen CAO]], [[Heng TIAN]]

Volatile organic compounds (VOC) impact the oxidizing power of the atmosphere and produce ozone and secondary 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 remote sensing (satellite) and in situ observations to make 'top-down' estimates of VOC emissions from different sources. We use chemical transport models to evaluate the impact of VOCs on tropospheric chemistry.


{{Box|type=l_red_light|text='''Global budgets of atmospheric glyoxal and methylglyoxal, and implications for formation of secondary organic aerosols'''

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{{:Papers:Fu_et_al_2008}}
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{{Box|type=l_red_light|text='''Space-based formaldehyde measurements as constraints on volatile organic compound emissions in east and south Asia and implications for ozone'''

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{{:Papers:Fu_et_al_2007}}
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{{Box|type=l_red_light|text='''Using satellite HCHO observations to constrain biogenic isoprene emissions in North America'''

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Publications : Millet et al. [2007], Palmer et al. [2006]
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=Secondary organic aerosols (SOA)=
Team members: [[Nan LI]], [[Li XING]], [[Tzung-May FU]]

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.


{{Box|type=l_red_light|text='''Global budgets of atmospheric glyoxal and methylglyoxal, and implications for formation of secondary organic aerosols'''

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{{:Papers:Fu_et_al_2008}}
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{{Box|type=l_red_light|text='''Carbonaceous aerosols in China: top-down constraints on primary sources and estimation of secondary contribution''' 

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{{:Papers:Fu_et_al_2012}}
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{{Box|type=l_red_light|text='''Sources of secondary organic aerosols in the Pearl River Delta region in fall: Contributions from the aqueous reactive uptake of dicarbonyls'''

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{{:Papers:Li_et_al_2013}}
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{{Box|type=l_red_light|text='''Seasonal and spatial variability of the OM/OC mass ratios and high regional correlation between oxalic acid and zinc in Chinese urban organic aerosols'''

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{{:Papers:Xing_et_al_2013}}
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{{Box|type=l_red_light|text='''A new physically-based parameterization scheme for organic aerosol size evolution'''

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Xing et al., in progress.
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=Chemistry-Climate interactions and Chemistry-Climate Model (CCM) development=
Team members: [[Jinxuan CHEN]], [[Yaping MA]], [[Wanying KANG]], [[Aoxing ZHANG]], [[Ye QING]]

{{Box|type=l_red_light|text='''Accounting for the subgrid variability of humidity on aerosol optical depth in large-scale models'''

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Ye et al., in preparation.
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=Measurements of Chinese PM2.5 composition=
Team members: [[Wei XU]], [[Jinxuan CHEN]], [[Heng TIAN]], [[Aoxing ZHANG]]

{{Box|type=l_red_light|text='''Sources of PM2.5 in Northern China in winter'''

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Xu et al., in preparation
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{{Box|type=l_red_light|text='''Sources of PM2.5 in a coastal city in Southern China in spring'''

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Xu, Tian, Chen, Zhang et al., in progress
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=Air-sea exchange of organic materials=
Team members: [[Cenlin HE]], [[Tzung-May FU]]

The ocean can act both as a source and a sink of atmospheric organic material. The air/sea exchange of organic materials is complexly regulated by both physical and biological conditions at the interface and poorly understood. We developed a new conceptual model 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.


{{Box|type=l_red_light|text='''Air-Sea Exchange of Volatile Organic Compounds: A New Model with Microlayer Effects'''

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{{:Papers:He_and_Fu_2012}}
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=Long-range transport of pollutants=
Team member: [[Yue JIAN]]


{{Box|type=l_red_light|text='''Injection heights of springtime biomass-burning plumes over peninsular Southeast Asia and their impacts on long-range pollutant transport'''

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{{:Papers:Jian_and_Fu_2014}}
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