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Analysis of long-term observations of NOx and CO in megacities and application to constraining emissions inventories
  • Published Date:
    2016
  • Source:
    Geophysical Research Letters, 43(18), 9920-9930.
Filetype[PDF-627.70 KB]


Details:
  • Supporting Files:
    No Additional Files
    1. Quantifying the contribution of thermally driven recirculation to a high-ozone event along the Colorado Front Range using lidar
      Personal Author:
      Sullivan, J. T.; McGee, T. J.; Langford, A. O.; Alvarez, R. J.; Senff, C. J.; Reddy, P. J.; Thompson, A. M.; Twigg, L. W.; Sumnicht, G. K.; Lee, P.; Weinheimer, A.; Knote, C.; Long, R. W.; Hoff, R. M.;
      Published Date:
      2016
      Source:
      Journal of Geophysical Research-Atmospheres, 121(17), 10377-10390.
      Description:
      A high-ozone (O-3) pollution episode was observed on 22 July 2014 during the concurrent Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) and Front Range Air Pollution an...
      File Type:
      Filetype[PDF - 3.56 MB]
    2. Object-Based Verification of a Prototype Warn-on-Forecast System
      Personal Author:
      Skinner, P. S.; Wheatley, D. M.; Knopfmeier, K. H.; Reinhart, A. E.; Choate, J. J.; Jones, T. A.; Creager, G. J.; Dowell, D. C.; Alexander, C. R.; Ladwig, T. T.; Wicker, L. J.; Heinselman, P. L.; Minnis, P.; Palikonda, R.;
      Published Date:
      2018
      Source:
      Weather and Forecasting, 33(5), 1225-1250.
      Description:
      An object-based verification methodology for the NSSL Experimental Warn-on-Forecast System for ensembles (NEWS-e) has been developed and applied to 32 cases between December 2015 and June 2017. NEWS-e forecast objects of composite reflectivity and 30...
      File Type:
      Filetype[PDF - 5.11 MB]
    3. Modeling the formation and aging of secondary organic aerosols in Los Angeles during CalNex 2010
      Personal Author:
      Hayes, P. L.; Carlton, A. G.; Baker, K. R.; Ahmadov, R.; Washenfelder, R. A.; Alvarez, S.; Rappengluck, B.; Gilman, J. B.; Kuster, W. C.; de Gouw, J. A.; Zotter, P.; Prevot, A. S. H.; Szidat, S.; Kleindienst, T. E.; Offenberg, J. H.; Ma, P. K.; Jimenez, J. L.;
      Published Date:
      2015
      Source:
      Atmospheric Chemistry and Physics, 15(10), 5773-5801.
      Description:
      Four different literature parameterizations for the formation and evolution of urban secondary organic aerosol (SOA) frequently used in 3-D models are evaluated using a 0-D box model representing the Los Angeles metropolitan region during the Califor...
      File Type:
      Filetype[PDF - 952.55 KB]
    4. Origins of aerosol chlorine during winter over north central Colorado, USA
      Personal Author:
      Jordan, C. E.; Pszenny, A. A. P.; Keene, W. C.; Cooper, O. R.; Deegan, B.; Maben, J.; Routhier, M.; Sander, R.; Young, A. H.;
      Published Date:
      2015
      Source:
      Journal of Geophysical Research-Atmospheres, 120(2), 678-694.
      Description:
      The Nitrogen, Aerosol Composition, and Halogens on a Tall Tower campaign (February-March 2011) near Boulder, Colorado, investigated nighttime ClNO2 production and processing. Virtually all particulate Cl was in the form of ionic Cl-. The size distrib...
      File Type:
      Filetype[PDF - 1.42 MB]
    5. Investigating biomass burning aerosol morphology using a laser imaging nephelometer
      Personal Author:
      Manfred, K. M.; Washenfelder, R. A.; Wagner, N. L.; Adler, G.; Erdesz, F.; Womack, C. C.; Lamb, K. D.; Schwarz, J. P.; Franchin, A.; Selimovic, V.; Yokelson, R. J.; Murphy, D. M.;
      Published Date:
      2018
      Source:
      Atmospheric Chemistry and Physics, 18(3), 1879-1894.
      Description:
      Particle morphology is an important parameter affecting aerosol optical properties that are relevant to climate and air quality, yet it is poorly constrained due to sparse in situ measurements. Biomass burning is a large source of aerosol that genera...
      File Type:
      Filetype[PDF - 2.31 MB]
    6. Performance Analysis and Projected Changes of Agroclimatological Indices Across West Africa Based on High-Resolution Regional Climate Model Simulations
      Personal Author:
      Dieng, D.; Laux, P.; Smiatek, G.; Heinzeller, D.; Bliefernicht, J.; Sarr, A.; Gaye, A. T.; Kunstmann, H.;
      Published Date:
      2018
      Source:
      Journal of Geophysical Research-Atmospheres, 123(15), 7950-7973.
      Description:
      In this study, we analyze a set of agroclimatological indices across West Africa and assess their projected changes for the future. We apply the regional climate model CCLM (COnsortium for Small-scale MOdelling in CLimate Mode) with a high spatial re...
      File Type:
      Filetype[PDF - 11.77 MB]
    7. SO2 Observations and Sources in the Western Pacific Tropical Tropopause Region
      Personal Author:
      Rollins, A. W.; Thornberry, T. D.; Atlas, E.; Navarro, M.; Schauffler, S.; Moore, F.; Elkins, J. W.; Ray, E.; Rosenlof, K.; Aquila, V.; Gao, R. S.;
      Published Date:
      2018
      Source:
      Journal of Geophysical Research-Atmospheres, 123(23), 13549-13559.
      Description:
      Sulfur dioxide (SO2) is one of the primary source gases for aerosols in the atmosphere. Even at low concentrations, its presence in the upper troposphere and lower stratosphere (UT/LS) provides an important source for aerosol nucleation and growth, a...
      File Type:
      Filetype[PDF - 2.13 MB]
    8. Estimation of Rain Rate from Airborne Doppler W-Band Radar in CalWater-2
      Personal Author:
      Fairall, C. W.; Matrosov, S. Y.; Williams, C. R.; Walsh, E. J.;
      Published Date:
      2018
      Source:
      Journal of Atmospheric and Oceanic Technology, 35(3), 593-608.
      Description:
      The NOAA W-band radar was deployed on a P-3 aircraft during a study of storm fronts off the U.S. West Coast in 2015 in the second CalWater (CalWater-2) field program. This paper presents an analysis of measured equivalent radar reflectivity factor Z(...
      File Type:
      Filetype[PDF - 1.81 MB]
    9. Emissions of nitrogen-containing organic compounds from the burning of herbaceous and arboraceous biomass: Fuel composition dependence and the variability of commonly used nitrile tracers
      Personal Author:
      Coggon, M. M.; Veres, P. R.; Yuan, B.; Koss, A.; Warneke, C.; Gilman, J. B.; Lerner, B. M.; Peischl, J.; Aikin, K. C.; Stockwell, C. E.; Hatch, L. E.; Ryerson, T. B.; Roberts, J. M.; Yokelson, R. J.; de Gouw, J. A.;
      Published Date:
      2016
      Source:
      Geophysical Research Letters, 43(18), 9903-9912.
      Description:
      Volatile organic compounds (VOCs) emitted from residential wood and crop residue burning were measured in Colorado, U.S. When compared to the emissions from crop burning, residential wood burning exhibited markedly lower concentrations of acetonitril...
      File Type:
      Filetype[PDF - 963.55 KB]
    10. High-resolution inversion of methane emissions in the Southeast US using SEAC(4)RS aircraft observations of atmospheric methane: anthropogenic and wetland sources
      Personal Author:
      Sheng, J. X.; Jacob, D. J.; Turner, A. J.; Maasakkers, J. D.; Sulprizio, M. P.; Bloom, A. A.; Andrews, A. E.; Wunch, D.;
      Published Date:
      2018
      Source:
      Atmospheric Chemistry and Physics, 18(9), 6483-6491.
      Description:
      We use observations of boundary layer methane from the SEAC(4)RS aircraft campaign over the Southeast US in August-September 2013 to estimate methane emissions in that region through an inverse analysis with up to 0.25 degrees x 0.3125 degrees (25 x ...
      File Type:
      Filetype[PDF - 993.12 KB]
    11. Ultraviolet radiation modelling from ground-based and satellite measurements on Reunion Island, southern tropics
      Personal Author:
      Lamy, K.; Portafaix, T.; Brogniez, C.; Godin-Beekmann, S.; Bencherif, H.; Morel, B.; Pazmino, A.; Metzger, J. M.; Auriol, F.; Deroo, C.; Duflot, V.; Goloub, P.; Long, C. N.;
      Published Date:
      2018
      Source:
      Atmospheric Chemistry and Physics, 18(1), 227-246.
      Description:
      Surface ultraviolet radiation (SUR) is not an increasing concern after the implementation of the Montreal Protocol and the recovery of the ozone layer (Morgenstern et al., 2008). However, large uncertainties remain in the prediction of future changes...
      File Type:
      Filetype[PDF - 5.90 MB]
    12. The influence of local oil exploration and regional wildfires on summer 2015 aerosol over the North Slope of Alaska
      Personal Author:
      Creamean, J. M.; Maahn, M.; de Boer, G.; McComiskey, A.; Sedlacek, A. J.; Feng, Y.;
      Published Date:
      2018
      Source:
      Atmospheric Chemistry and Physics, 18(2), 555-570.
      Description:
      The Arctic is warming at an alarming rate, yet the processes that contribute to the enhanced warming are not well understood. Arctic aerosols have been targeted in studies for decades due to their consequential impacts on the energy budget, both dire...
      File Type:
      Filetype[PDF - 13.21 MB]
    13. Equatorial Waves and the Skill of NCEP and ECMWF Numerical Weather Prediction Systems
      Personal Author:
      Dias, J.; Gehne, M.; Kiladis, G. N.; Sakaeda, N.; Bechtold, P.; Haiden, T.;
      Published Date:
      2018
      Source:
      Monthly Weather Review, 146(6), 1763-1784.
      Description:
      Despite decades of research on the role of moist convective processes in large-scale tropical dynamics, tropical forecast skill in operational models is still deficient when compared to the extratropics, even at short lead times. Here we compare trop...
      File Type:
      Filetype[PDF - 6.54 MB]
    14. Widespread Reemergence of Sea Surface Temperature Anomalies in the Global Oceans, Including Tropical Regions Forced by Reemerging Winds
      Personal Author:
      Byju, P.; Dommenget, D.; Alexander, M. A.;
      Published Date:
      2018
      Source:
      Geophysical Research Letters, 45(15), 7683-7691.
      Description:
      Sea surface temperature anomalies (SSTA) in portions of the extratropics are known to recur from one winter to the next without persisting through the intervening summer. Previous studies identified only a limited number of midlatitude regions where ...
      File Type:
      Filetype[PDF - 1.26 MB]
    15. Non-methane organic gas emissions from biomass burning: identification, quantification, and emission factors from PTR-ToF during the FIREX 2016 laboratory experiment
      Personal Author:
      Koss, A. R.; Sekimoto, K.; Gilman, J. B.; Selimovic, V.; Coggon, M. M.; Zarzana, K. J.; Yuan, B.; Lerner, B. M.; Brown, S. S.; Jimenez, J. L.; Krechmer, J.; Roberts, J. M.; Warneke, C.; Yokelson, R. J.; de Gouw, J.;
      Published Date:
      2018
      Source:
      Atmospheric Chemistry and Physics, 18(5), 3299-3319.
      Description:
      Volatile and intermediate-volatility non-methane organic gases (NMOGs) released from biomass burning were measured during laboratory-simulated wildfires by protontransfer-reaction time-of-flight mass spectrometry (PTRToF). We identified NMOG contribu...
      File Type:
      Filetype[PDF - 7.57 MB]
    16. Multiscale Currents Observed by MMS in the Flow Braking Region
      Personal Author:
      Nakamura, R.; Varsani, A.; Genestreti, K. J.; Le Contel, O.; Nakamura, T.; Baumjohann, W.; Nagai, T.; Artemyev, A.; Birn, J.; Sergeev, V. A.; Apatenkov, S.; Ergun, R. E.; Fuselier, S. A.; Gershman, D. J.; Giles, B. J.; Khotyaintsev, Y. V.; Lindqvist, P. A.; Magnes, W.; Mauk, B.; Petrukovich, A.; Russell, C. T.; Stawarz, J.; Strangeway, R. J.; Anderson, B.; Burch, J. L.; Bromund, K. R.; Cohen, I.; Fischer, D.; Jaynes, A.; Kepko, L.; Le, G.; Plaschke, F.; Reeves, G.; Singer, H. J.; Slavin, J. A.; Torbert, R. B.; Turner, D. L.;
      Published Date:
      2018
      Source:
      Journal of Geophysical Research-Space Physics, 123(2), 1260-1278.
      Description:
      We present characteristics of current layers in the off-equatorial near-Earth plasma sheet boundary observed with high time-resolution measurements from the Magnetospheric Multiscale mission during an intense substorm associated with multiple dipolar...
      File Type:
      Filetype[PDF - 15.15 MB]
    17. Understanding isoprene photooxidation using observations and modeling over a subtropical forest in the southeastern US
      Personal Author:
      Su, L. P.; Patton, E. G.; de Arellano, J. V. G.; Guenther, A. B.; Kaser, L.; Yuan, B.; Xiong, F. L. Z.; Shepson, P. B.; Zhang, L.; Miller, D. O.; Brune, W. H.; Baumann, K.; Edgerton, E.; Weinheimer, A.; Misztal, P. K.; Park, J. H.; Goldstein, A. H.; Skog, K. M.; Keutsch, F. N.; Mak, J. E.;
      Published Date:
      2016
      Source:
      Atmospheric Chemistry and Physics, 16(12), 7725-7741.
      Description:
      The emission, dispersion, and photochemistry of isoprene (C5H8) and related chemical species in the convective boundary layer (CBL) during sunlit daytime were studied over a mixed forest in the southeastern United States by combining ground-based and...
      File Type:
      Filetype[PDF - 3.19 MB]
    18. Evaluation of stratospheric age of air from CF4, C2F6, C3F8, CHF3, HFC-125, HFC-227ea and SF6; implications for the calculations of halocarbon lifetimes, fractional release factors and ozone depletion potentials
      Personal Author:
      Elvidge, E. L.; Bonisch, H.; Brenninkmeijer, C. A. M.; Engel, A.; Fraser, P. J.; Gallacher, E.; Langenfelds, R.; Muhle, J.; Oram, D. E.; Ray, E. A.; Ridley, A. R.; Rockmann, T.; Sturges, W. T.; Weiss, R. F.; Laube, J. C.;
      Published Date:
      2018
      Source:
      Atmospheric Chemistry and Physics, 18(5), 3369-3385.
      Description:
      In a changing climate, potential stratospheric circulation changes require long-term monitoring. Stratospheric trace gas measurements are often used as a proxy for stratospheric circulation changes via the "mean age of air" values derived from them. ...
      File Type:
      Filetype[PDF - 2.53 MB]
    19. A broadband cavity enhanced absorption spectrometer for aircraft measurements of glyoxal, methylglyoxal, nitrous acid, nitrogen dioxide, and water vapor
      Personal Author:
      Min, K. E.; Washenfelder, R. A.; Dube, W. P.; Langford, A. O.; Edwards, P. M.; Zarzana, K. J.; Stutz, J.; Lu, K.; Rohrer, F.; Zhang, Y.; Brown, S. S.;
      Published Date:
      2016
      Source:
      Atmospheric Measurement Techniques, 9(2), 423-440.
      Description:
      We describe a two-channel broadband cavity enhanced absorption spectrometer (BBCEAS) for aircraft measurements of glyoxal (CHOCHO), methylglyoxal (CH3COCHO), nitrous acid (HONO), nitrogen dioxide (NO2), and water (H2O). The instrument spans 361-389 a...
      File Type:
      Filetype[PDF - 9.03 MB]
    20. Nonlinear response of tropical lower-stratospheric temperature and water vapor to ENSO
      Personal Author:
      Garfinkel, C. I.; Gordon, A.; Oman, L. D.; Li, F.; Davis, S.; Pawson, S.;
      Published Date:
      2018
      Source:
      Atmospheric Chemistry and Physics, 18(7), 4597-4615.
      Description:
      A series of simulations using the NASA Goddard Earth Observing System Chemistry-Climate Model are analyzed in order to aid in the interpretation of observed interannual and sub-decadal variability in the tropical lower stratosphere over the past 35 y...
      File Type:
      Filetype[PDF - 1.64 MB]
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