Browsing by Author "Logan, Jennifer"

Now showing items 21-40 of 41

    • Improved quantification of Chinese carbon fluxes using CO 2 /CO correlations in Asian outflow 

      Suntharalingam, Parvadha; Jacob, Daniel James; Palmer, Paul; Logan, Jennifer A.; Yantosca, Robert M.; Xiao, Yaping; Evans, Matthew; Streets, David; Vay, Stephanie; Sachse, Glen (Wiley-Blackwell, 2004)
      We use observed CO2:CO correlations in Asian outflow from the TRACE-P aircraft campaign (February–April 2001), together with a three-dimensional global chemical transport model (GEOS-CHEM), to constrain specific components ...

    • Influence of Reduced Carbon Emissions and Oxidation on the Distribution of Atmospheric CO2: Implications for Inversion Analyses 

      Suntharalingam, Parvadha; Randerson, James T.; Krakauer, Nir; Logan, Jennifer A.; Jacob, Daniel J. (American Geophysical Union, 2005)
      Recent inverse analyses constraining carbon fluxes using atmospheric CO2 observations have assumed that the CO2 source from atmospheric oxidation of reduced carbon is released at the surface rather than distributed globally ...

    • Interannual Variability in Tropical Tropospheric Ozone and OH: The Role of Lightning 

      Murray, Lee; Logan, Jennifer A.; Jacob, Daniel James (Wiley-Blackwell, 2013)
      Nitrogen oxide radicals (NOx) produced by lightning are natural precursors for the production of the dominant tropospheric oxidants, OH and ozone. Observations of the interannual variability (IAV) of tropical ozone and of ...

    • An intercomparison and evaluation of aircraft-derived and simulated CO from seven chemical transport models during the TRACE-P experiment 

      Kiley, Christopher M.; Fuelberg, Henry; Palmer, Paul; Allen, Dale J.; Carmichael, Gregory; Jacob, Daniel James; Mari, Celine; Pierce, R. Bradley; Pickering, Kenneth; Tang, Yoshua; Wild, Oliver; Fairlie, T. Duncan; Logan, Jennifer A.; Sachse, Glen; Shaack, Todd; Streets, David (Wiley-Blackwell, 2003)
      Four global scale and three regional scale chemical transport models are intercompared and evaluated during NASA's Transport and Chemical Evolution over the Pacific (TRACE-P) experiment. Model simulated and measured CO are ...

    • Intercomparison Methods for Satellite Measurements of Atmospheric Composition: Application to Tropospheric Ozone from TES and OMI 

      Zhang, L.; Jacob, Daniel J.; Liu, Xiong; Logan, Jennifer A.; Chance, Kelly V.; Eldering, A.; Bojkov, B. R. (European Geosciences Union, 2010)
      We analyze the theoretical basis of three different methods to validate and intercompare satellite measurements of atmospheric composition, and apply them to tropospheric ozone retrievals from the Tropospheric Emission ...

    • Interpretation of TOMS observations of tropical tropospheric ozone with a global model and in situ observations 

      Martin, Randall V.; Jacob, Daniel James; Logan, Jennifer A.; Bey, Isabelle; Yantosca, Robert M.; Staudt, Amanda; Li, Qinbin; Fiore, Arlene; Duncan, Bryan; Liu, Hongyu; Ginoux, Paul; Thouret, Valerie (American Geophysical Union, 2002)
      We interpret the distribution of tropical tropospheric ozone columns (TTOCs) from the Total Ozone Mapping Spectrometer (TOMS) by using a global three-dimensional model of tropospheric chemistry (GEOS-CHEM) and additional ...

    • Inventory of Boreal Fire Emissions for North America in 2004: The Importance of Peat Burning and Pyro-Convective Injection 

      Turquety, Solène; Logan, Jennifer A.; Jacob, Daniel J.; Hudman, Rynda C.; Leung, Fok Yan; Heald, Colette L.; Yantosca, Robert M.; Wu, Shiliang; Emmons, Louisa K.; Edwards, David P.; Sachse, Glen W. (American Geophysical Union, 2007)
      The summer of 2004 was one of the largest fire seasons on record for Alaska and western Canada. We construct a daily bottom-up fire emission inventory for that season, including consideration of peat burning and high-altitude ...

    • Least independent variables method for simulation of tropospheric ozone 

      Jacob, Daniel James; Sillman, S.; Logan, Jennifer A.; Wofsy, Steven Charles (Wiley-Blackwell, 1989)
      We describe a method for simulating photochemical production of O in a continental‐scale tropospheric model with only six independent chemical variables representing tracers transported in the model. The tracers are two ...

    • On the origin of tropospheric ozone and NOx over the tropical South Pacific 

      Schultz, Martin G.; Jacob, Daniel James; Wang, Yuhang; Logan, Jennifer A.; Atlas, Elliot L.; Blake, Donald R.; Blake, Nicola J.; Bradshaw, John D.; Browell, Edward V.; Fenn, Marta A.; Flocke, Frank; Gregory, Gerald L.; Heikes, Brian G.; Sachse, Glen W.; Sandholm, Scott T.; Shetter, Richard E.; Singh, Hanwant B.; Talbot, Robert W. (Wiley-Blackwell, 1999)
      The budgets of ozone and nitrogen oxides (NOx = NO + NO2) in the tropical South Pacific troposphere are analyzed by photochemical point modeling of aircraft observations at 0–12 km altitude from the Pacific Exploratory ...

    • Optimized regional and interannual variability of lightning in a global chemical transport model constrained by LIS/OTD satellite data 

      Murray, Lee Thomas; Jacob, Daniel J.; Logan, Jennifer A.; Hudman, Rynda C.; Koshak, William J. (Wiley-Blackwell, 2012)
      Nitrogen oxides (NOx≡ NO + NO2) produced by lightning make a major contribution to the global production of tropospheric ozone and OH. Lightning distributions inferred from standard convective parameterizations in global ...

    • Origin of ozone and NO x in the tropical troposphere: A photochemical analysis of aircraft observations over the South Atlantic basin 

      Jacob, Daniel James; Heikes, E. G.; Fan, S.-M.; Logan, Jennifer A.; Mauzerall, D. L.; Bradshaw, J. D.; Singh, H. B.; Gregory, G. L.; Talbot, R. W.; Blake, D. R.; Sachse, G. W. (Wiley-Blackwell, 1996)
      The photochemistry of the troposphere over the South Atlantic basin is examined by modeling of aircraft observations up to 12-km altitude taken during the TRACE A expedition in September–October 1992. A close balance is ...

    • Ozone-CO Correlations Determined by the TES Satellite Instrument in Continental Outflow Regions 

      Zhang, Lin; Jacob, Daniel J.; Bowman, Kevin W.; Logan, Jennifer A.; Turquety, Solene; Hudman, Rynda C.; Li, Qinbin; Beer, Reinhard; Worden, Helen M.; Worden, John R.; Rinsland, Curtis P.; Kulawik, Susan S.; Lampel, Michael C.; Shephard, Mark W.; Fisher, Brendan M.; Eldering, Annmarie; Avery, Melody A. (American Geophysical Union, 2006)
      Collocated measurements of tropospheric ozone (O3) and carbon monoxide (CO) from the Tropospheric Emission Spectrometer (TES) aboard the EOS Aura satellite provide information on O3-CO correlations to test our understanding ...

    • Passive tracer transport relevant to the TRACE A experiment 

      Krishnamurti, T. N.; Sinha, M. C.; Kanamitsu, M.; Oosterhof, D.; Fuelberg, H.; Chatfield, R.; Jacob, Daniel James; Logan, Jennifer A. (Wiley-Blackwell, 1996)
      This paper explores some of the mechanisms governing the accumulation of passive tracers over the tropical southern Atlantic Ocean during the northern hemisphere fall season. There has been a pioneering observation regarding ...

    • Photochemistry in biomass burning plumes and implications for tropospheric ozone over the tropical South Atlantic 

      Mauzerall, Denise L.; Logan, Jennifer A.; Jacob, Daniel James; Anderson, Bruce E.; Blake, Donald R.; Bradshaw, John D.; Heikes, Brian; Sachse, Glenn W.; Singh, Hanwant; Talbot, Bob (Wiley-Blackwell, 1998)
      Photochemistry occuring in biomass burning plumes over the tropical south Atlantic is analyzed using data collected during the Transport and Atmospheric Chemistry Near the Equator-Atlantic aircraft expedition conducted ...

    • Radiative forcing from tropospheric ozone calculated with a unified chemistry-climate model 

      Mickley, Loretta J.; Murti, P. P.; Jacob, Daniel James; Logan, Jennifer A.; Koch, D. M.; Rind, D. (Wiley-Blackwell, 1999)
      We have developed a global model for the study of chemistry-climate interactions by incorporating a detailed simulation of tropospheric ozone-NOx-hydrocarbon chemistry within a general circulation model (GCM). We present ...

    • Seasonal budgets of reactive nitrogen species and ozone over the United States, and export fluxes to the global atmosphere 

      Liang, Jinyou; Horowitz, Larry W.; Jacob, Daniel James; Wang, Yuhang; Fiore, Arlene M.; Logan, Jennifer A.; Gardner, Geraldine M.; Munger, J. William (Wiley-Blackwell, 1998)
      A three-dimensional, continental-scale photochemical model is used to investigate seasonal budgets of O3 and NOy species (including NOx and its oxidation products) in the boundary layer over the United States and to estimate ...

    • Simulated observation of tropospheric ozone and CO with the Tropospheric Emission Spectrometer (TES) satellite instrument 

      Luo, M.; Beer, R; Jacob, Daniel James; Logan, Jennifer A.; Rodgers, C (Wiley-Blackwell, 2002)
      The Tropospheric Emission Spectrometer (TES) on board NASA's Aura satellite (to be launched in 2004) will provide measurements of global distributions of ozone, CO, and other key chemical species in the troposphere. In ...

    • Simulation of summertime ozone over North America 

      Jacob, Daniel James; Logan, Jennifer A.; Yevich, Rose M.; Gardner, Geraldine M.; Spivakovsky, Clarisa M.; Wofsy, Steven C.; Munger, J. William; Sillman, Sanford; Prather, Michael J.; Rodgers, Michael O.; Westberg, Hal; Zimmerman, Patrick R. (Wiley-Blackwell, 1993)
      The concentrations of O3 and its precursors over North America are simulated for three summer months with a three-dimensional, continental-scale photochemical model using meteorological input from the Goddard Institute for ...

    • Sources and chemistry of nitrogen oxides over the tropical Pacific 

      Staudt, A. C.; Jacob, Daniel James; Ravetta, F; Logan, Jennifer A.; Bachiochi, D; Krishnamurti, T; Sandholm, S; Ridley, B; Singh, H; Talbot, B (Wiley-Blackwell, 2003)
      We examine the sources and chemistry affecting nitrogen oxides (NOx = NO + NO2) over the tropical Pacific (30°S–20°N) using observations from the Pacific Exploratory Mission to the Tropics B (PEM-Tropics B) aircraft mission ...

    • A tropospheric ozone maximum over the Middle East 

      Li, Qinbin; Jacob, Daniel James; Logan, Jennifer A.; Bey, Isabelle; Yantosca, Robert M.; Liu, Hongyu; Martin, Randall V.; Fiore, Arlene M.; Field, Brendan D.; Duncan, Bryan N.; Thouret, Valérie (Wiley-Blackwell, 2001)
      The GEOS-CHEM global 3-D model of tropospheric chemistry predicts a summertime O3 maximum over the Middle East, with mean mixing ratios in the middle and upper troposphere in excess of 80 ppbv. This model feature is ...