Now showing items 1-7 of 7

    • Annual Distributions and Sources of Arctic Aerosol Components, Aerosol Optical Depth, and Aerosol Absorption 

      Breider, Thomas J.; Mickley, Loretta J.; Jacob, Daniel James; Wang, Qiaoqiao; Fisher, Jenny A.; Chang, Rachel. Y.-W.; Alexander, Becky (Wiley-Blackwell, 2014)
      Radiative forcing by aerosols and tropospheric ozone could play a significant role in recent Arctic warming. These species are in general poorly accounted for in climate models. We use the GEOS-Chem global chemical transport ...
    • Factors Driving Mercury Variability in the Arctic Atmosphere and Ocean over the Past 30 Years 

      Fisher, Jenny A.; Jacob, Daniel James; Soerensen, Anne Laerke; Amos, Helen Marie; Corbitt, Elizabeth Sturges; Streets, David G.; Wang, Qiaoqiao; Yantosca, Robert M.; Sunderland, Elynor M (Wiley-Blackwell, 2013)
      [1] Long-term observations at Arctic sites (Alert and Zeppelin) show large interannual variability (IAV) in atmospheric mercury (Hg), implying a strong sensitivity of Hg to environmental factors and potentially to climate ...
    • Gas-Particle Partitioning of Atmospheric Hg(II) and Its Effect on Global Mercury Deposition 

      Amos, Helen Marie; Jacob, Daniel J.; Holmes, C. D.; Fisher, Jenny Allison; Wang, Qiaoqiao; Yantosca, Robert M.; Corbitt, Elizabeth Sturges; Galarneau, E.; Rutter, A. P.; Gustin, M. S.; Steffen, A.; Schauer, J. J.; Graydon, J. A.; Louis, V. L. St.; Talbot, R. W.; Edgerton, E. S.; Zhang, Y.; Sunderland, Elynor M (Copernicus GmbH, 2012)
      Atmospheric deposition of Hg(II) represents a major input of mercury to surface environments. The phase of Hg(II) (gas or particle) has important implications for deposition. We use long-term observations of reactive gaseous ...
    • Global Budget and Radiative Forcing of Black Carbon Aerosol: Constraints from Pole-to-Pole (HIPPO) Observations across the Pacific 

      Wang, Qiaoqiao; Jacob, Daniel James; Spackman, J. Ryan; Perring, Anne E.; Schwarz, Joshua P.; Moteki, Nobuhiro; Marais, Eloise Ann; Ge, Cui; Wang, Jun; Barrett, Steven R. H. (Wiley-Blackwell, 2014)
      We use a global chemical transport model (GEOS-Chem) to interpret aircraft curtain observations of black carbon (BC) aerosol over the Pacific from 85°N to 67°S during the 2009–2011 HIAPER (High-Performance Instrumented ...
    • Global budget of black carbon aerosol and implications for climate forcing 

      Wang, Qiaoqiao (2014-02-25)
      This thesis explores the factors controlling the distribution of black carbon (BC) in the atmosphere/troposphere and its implications for climate forcing. BC is of great climate interest because of its warming potential. ...
    • Probing Single DNA Molecule Transport Using Fabricated Nanopores 

      Chen, Peng; Gu, Jiajun; Brandin, Eric; Kim, Young-Rok; Wang, Qiaoqiao; Branton, Daniel (American Chemical Society, 2004)
      Nanopores can serve as high throughput, single-molecule sensing devices that provide insight into the distribution of static and dynamic molecular activities, properties, or interactions. We have studied double stranded ...
    • Sources of carbonaceous aerosols and deposited black carbon in the Arctic in winter-spring: implications for radiative forcing 

      Wang, Qiaoqiao; Jacob, Daniel James; Fisher, Jenny Allison; Mao, Jialin; Leibensperger, E; Carouge, C. C.; Le Sager, P; Kondo, Y.; Jimenez, J. L.; Cubison, M. J.; Doherty, S. J. (European Geosciences Union, 2011)
      We use a global chemical transport model (GEOS-Chem CTM) to interpret observations of black carbon (BC) and organic aerosol (OA) from the NASA ARCTAS aircraft campaign over the North American Arctic in April 2008, as well ...