Journal of Geophysical Research: Atmospheres (1984–2012)

Cover image for Journal of Geophysical Research: Atmospheres (1984–2012)

16 August 2012

Volume 117, Issue D15

Currently known as: Journal of Geophysical Research: Atmospheres

  1. Aerosol and Clouds

    1. Top of page
    2. Aerosol and Clouds
    3. Climate and Dynamics
    4. Composition and Chemistry
    1. The dependence of ice microphysics on aerosol concentration in arctic mixed-phase stratus clouds during ISDAC and M-PACE

      Robert C. Jackson, Greg M. McFarquhar, Alexei V. Korolev, Michael E. Earle, Peter S. K. Liu, R. Paul Lawson, Sarah Brooks, Mengistu Wolde, Alexander Laskin and Matt Freer

      Article first published online: 14 AUG 2012 | DOI: 10.1029/2012JD017668

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      Key Points

      • In entrainment from above arctic clouds may enhance ice crystal concentration
      • No strong evidence for a riming indirect effect was found
      • Thermodynamic indirect effect is consistent with ISDAC and M-PACE
    2. Arctic synoptic regimes: Comparing domain-wide Arctic cloud observations with CAM4 and CAM5 during similar dynamics

      Neil P. Barton, Stephen A. Klein, James S. Boyle and Yuying Y. Zhang

      Article first published online: 10 AUG 2012 | DOI: 10.1029/2012JD017589

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      Key Points

      • Statistical analysis separated Arctic dynamics into 4 distinct regions
      • Arctic cloud response to changing surface type is dependent on thermodynamics
      • CAM5 reproduced Arctic boundary layer clouds more accurately compared to CAM4
    3. Using passive remote sensing to retrieve the vertical variation of cloud droplet size in marine stratocumulus: An assessment of information content and the potential for improved retrievals from hyperspectral measurements

      N. J. King and G. Vaughan

      Article first published online: 10 AUG 2012 | DOI: 10.1029/2012JD017896

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      Key Points

      • MODIS has little information related to vertical variation of effective radius
      • A hyperspectral measurement contains significantly more information
      • Accounting for vertical variation improves the liquid water path estimate
    4. Evaluations of cirrus contamination and screening in ground aerosol observations using collocated lidar systems

      Jingfeng Huang, N. Christina Hsu, Si-Chee Tsay, Brent N. Holben, Ellsworth J. Welton, Alexander Smirnov, Myeong-Jae Jeong, Richard A. Hansell, Timothy A. Berkoff, Zhaoyan Liu, Gin-Rong Liu, James R. Campbell, Soo Chin Liew and John E. Barnes

      Article first published online: 8 AUG 2012 | DOI: 10.1029/2012JD017757

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      Key Points

      • Quantitatively evaluate cirrus contamination in AERONET AOT retrieval
      • Highlight and resolve challenges in various types of data matching up
      • Estimate contributions from cirrus contamination to ground aerosol retrieval
    5. Strokes of upward illumination occurring within a few milliseconds after typical lightning return strokes

      Maribeth Stolzenburg, Thomas C. Marshall, Sumedhe Karunarathne, Nadeeka Karunarathna, Tom A. Warner, Richard E. Orville and Hans-Dieter Betz

      Article first published online: 4 AUG 2012 | DOI: 10.1029/2012JD017654

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      Key Points

      • Upward illumination in separate channel to ground during a normal return stroke
      • UIs occur less than 2 ms after but without visible connection to a return stroke
      • Low peak current, small field change, slow speed, and lit for less than 1 ms
    6. Particle fluxes and condensational uptake over sea ice during COBRA

      J. D. Whitehead, J. R. Dorsey, M. W. Gallagher, M. J. Flynn, G. McFiggans and L. J. Carpenter

      Article first published online: 3 AUG 2012 | DOI: 10.1029/2012JD017798

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      Key Points

      • Particle deposition velocities to sea ice are small compared to previous studies
      • Ice resuspension fluxes are observed in strong wind
      • Trace gas uptake to particles is small compared to marine studies
    7. Spatial and energy distributions of X-ray emissions from leaders in natural and rocket triggered lightning

      M. M. Schaal, J. R. Dwyer, Z. H. Saleh, H. K. Rassoul, J. D. Hill, D. M. Jordan and M. A. Uman

      Article first published online: 2 AUG 2012 | DOI: 10.1029/2012JD017897

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      Key Points

      • To present new X-ray observations from natural and rocket-triggered lightning
      • Electron luminosity was compared to the return stroke currents for 28 leaders
      • Energetic electrons exhibit a characteristic energy less than 3 MeV
  2. Climate and Dynamics

    1. Top of page
    2. Aerosol and Clouds
    3. Climate and Dynamics
    4. Composition and Chemistry
    1. Convective rain cells: Radar-derived spatiotemporal characteristics and synoptic patterns over the eastern Mediterranean

      Nadav Peleg and Efrat Morin

      Article first published online: 15 AUG 2012 | DOI: 10.1029/2011JD017353

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      Key Points

      • Space-time convective rain cells features and synoptic patterns were analyzed
      • Differences in cells area, intensity and speed were found for synoptic patterns
      • Distance from coastline affects rain cells intensity and area
    2. Analysis of soil moisture memory from observations in Europe

      R. Orth and S. I. Seneviratne

      Article first published online: 15 AUG 2012 | DOI: 10.1029/2011JD017366

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      Key Points

      • Distinct soil moisture memory in observations up to more than a month
      • Analytical framework successfully applied to identify main drivers
      • Enhanced soil moisture memory under extreme conditions
    3. The role of groundwater in the Amazon water cycle: 1. Influence on seasonal streamflow, flooding and wetlands

      Gonzalo Miguez-Macho and Ying Fan

      Article first published online: 14 AUG 2012 | DOI: 10.1029/2012JD017539

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      Key Points

      • Groundwater is the dominant source for streamflow in the headwaters of the Amazon
      • There is two-way groundwater-floodplain exchange
      • This two-way exchange is controlled by water table depth
    4. Asian monsoon hydrometeorology from TES and SCIAMACHY water vapor isotope measurements and LMDZ simulations: Implications for speleothem climate record interpretation

      Jung-Eun Lee, Camille Risi, Inez Fung, John Worden, Remco A. Scheepmaker, Benjamin Lintner and Christian Frankenberg

      Article first published online: 14 AUG 2012 | DOI: 10.1029/2011JD017133

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      Key Points

      • Rain reevaporation increases summer isotope values over from SE to NW China
      • Speleothem isotopes from NW China may represent local precipitation
      • Convective boundaries may shift poleward under warmer climates
    5. The role of groundwater in the Amazon water cycle: 2. Influence on seasonal soil moisture and evapotranspiration

      Gonzalo Miguez-Macho and Ying Fan

      Article first published online: 14 AUG 2012 | DOI: 10.1029/2012JD017540

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      Key Points

      • Groundwater in the Amazon is sufficiently shallow to affect land surface
      • Shallow groundwater impedes wet season drainage
      • Shallow groundwater supplies upward capillary flux in dry season
    6. Dominant modes of Diurnal Temperature Range variability over Europe and their relationships with large-scale atmospheric circulation and sea surface temperature anomaly patterns

      M. Ionita, G. Lohmann, N. Rimbu and P. Scholz

      Article first published online: 11 AUG 2012 | DOI: 10.1029/2011JD016669

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      Key Points

      • Diurnal Temperature Range variability
      • Large-scale atmospheric modes
      • North Atlantic Oscillation
    7. Intraseasonal temperature variability in the upper troposphere and lower stratosphere from the GPS radio occultation measurements

      Baijun Tian, Chi O. Ao, Duane E. Waliser, Eric J. Fetzer, Anthony J. Mannucci and Joao Teixeira

      Article first published online: 11 AUG 2012 | DOI: 10.1029/2012JD017715

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      Key Points

      • GPS RO data were used to study MJO in UTLS, for the 1st time
      • GPS RO data reveal many new features of the UTLS not documented before
      • UTLS MJO structure from AIRS was evaluated using the GPS RO data
    8. Sensitivity of surface flux simulations to hydrologic parameters based on an uncertainty quantification framework applied to the Community Land Model

      Zhangshuan Hou, Maoyi Huang, L. Ruby Leung, Guang Lin and Daniel M. Ricciuto

      Article first published online: 10 AUG 2012 | DOI: 10.1029/2012JD017521

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      Key Points

      • We introduce an uncertainty quantification framework for CLM
      • Sensitivity of CLM4 to hydrologic parameters is analyzed
      • Our study suggests the necessity of and approach for inverting CLM parameters
    9. Comparing the impacts of mitigation versus non-intervention scenarios on future temperature and precipitation extremes in the HadGEM2 climate model

      John Caesar and Jason A. Lowe

      Article first published online: 10 AUG 2012 | DOI: 10.1029/2012JD017762

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      Key Points

      • We assess the benefits of mitigation on future climate extremes
      • Reductions in projected temperature extremes are a benefit of mitigation
      • Precipitation changes are less clear and may also be influenced by aerosols
    10. Long-term trends of hail-related weather types in an ensemble of regional climate models using a Bayesian approach

      M.-L. Kapsch, M. Kunz, R. Vitolo and T. Economou

      Article first published online: 9 AUG 2012 | DOI: 10.1029/2011JD017185

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      Key Points

      • Large-scale weather patterns derived from regional climate models as hail proxy
      • Statistical estimation of the number of hail days using a Bayesian model
      • Regional climate models are able to reproduce the weather pattern distribution
    11. An east-west SST anomaly pattern in the midlatitude North Atlantic Ocean associated with winter precipitation variability over eastern China

      Ge Liu, Liren Ji and Renguang Wu

      Article first published online: 9 AUG 2012 | DOI: 10.1029/2012JD017960

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      Key Points

      • The present study reveals a North Atlantic east-west SST anomaly pattern
      • The SST pattern plays an important role for winter precipitation over China
      • The influence of the SST pattern may contribute to the Rossby wave propagation
    12. You have free access to this content
      Correction to “The 1452 or 1453 A.D. Kuwae eruption signal derived from multiple ice core records: Greatest volcanic sulfate event of the past 700 years”

      Chaochao Gao, Alan Robock, Stephen Self, Jeffrey B. Witter, J. P. Steffenson, Henrik Brink Clausen, Marie-Louise Siggaard-Andersen, Sigfus Johnsen, Paul A. Mayewski and Caspar Ammann

      Article first published online: 9 AUG 2012 | DOI: 10.1029/2012JD018051

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    13. Gravity wave occurrence statistics derived from paired COSMIC/FORMOSAT3 observations

      A. J. McDonald

      Article first published online: 9 AUG 2012 | DOI: 10.1029/2011JD016715

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      Key Points

      • First global-scale measurements of gravity wave occurrence rate
      • Wave occurrence has latitude variation linked to horizontal wavelengths
      • GW property calculations from satellite need to apply this or similar technique
    14. Air-sea interactions during an Arctic storm

      Zhenxia Long and Will Perrie

      Article first published online: 4 AUG 2012 | DOI: 10.1029/2011JD016985

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      Key Points

      • Decrease of Beaufort ice cover increases the sea surface temperature by ~6C
      • Atmospheric responses to warmer SSTs are mainly limited to boundary layer
      • Enhanced storm-generated surface winds, by as much as ~4 m/s
    15. Decadal changes in the relationship between the tropical Pacific and the North Pacific

      Sae-Rim Yeo, Kwang-Yul Kim, Sang-Wook Yeh and WonMoo Kim

      Article first published online: 3 AUG 2012 | DOI: 10.1029/2012JD017775

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      Key Points

      • Tropical Pacific-North Pacific relationship was changed in late 1990s
      • During 1980-1998, atmospheric bridge mechanism was dominant
      • During 1999-2010, seasonal footprinting mechanism became crucial
    16. Estimates of North American summertime planetary boundary layer depths derived from space-borne lidar

      Erica L. McGrath-Spangler and A. Scott Denning

      Article first published online: 1 AUG 2012 | DOI: 10.1029/2012JD017615

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      Key Points

      • PBL depth estimates can be derived from space-borne lidar
      • The algorithm is able to detect the relatively deep boreal forest PBL depths
      • Estimates compare favorably over land w/ exceptions over SW US, water
  3. Composition and Chemistry

    1. Top of page
    2. Aerosol and Clouds
    3. Climate and Dynamics
    4. Composition and Chemistry
    1. Methane airborne measurements and comparison to global models during BARCA

      Veronika Beck, Huilin Chen, Christoph Gerbig, Peter Bergamaschi, Lori Bruhwiler, Sander Houweling, Thomas Röckmann, Olaf Kolle, Julia Steinbach, Thomas Koch, Célia J. Sapart, Carina van der Veen, Christian Frankenberg, Meinrat O. Andreae, Paulo Artaxo, Karla M. Longo and Steven C. Wofsy

      Article first published online: 14 AUG 2012 | DOI: 10.1029/2011JD017345

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      Key Points

      • Airborne observations during BARCA indicate that Amazon is a strong CH4 source
      • The flux strength of the Amazon is calculated to 36 and 43 mg m-2 d-1
      • Global CH4 inversions using SCIAMACHY data represent BARCA observations best
    2. Examination of the Cooray-Rubinstein (C-R) formula for a mixed propagation path by using FDTD

      Qilin Zhang, Dongshuai Li, Yanfeng Fan, Yuanyuan Zhang and Jinge Gao

      Article first published online: 11 AUG 2012 | DOI: 10.1029/2011JD017331

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      Key Points

      • Horizontal electric fields over a mixed propagation path have been estimated
      • C-R approximation can be applied into a certain case of the mixed path
      • Accuracy of the C-R approximation has been examined by FDTD
    3. Interannual variability of carbon monoxide emission estimates over South America from 2006 to 2010

      P. B. Hooghiemstra, M. C. Krol, T. T. van Leeuwen, G. R. van der Werf, P. C. Novelli, M. N. Deeter, I. Aben and T. Röckmann

      Article first published online: 10 AUG 2012 | DOI: 10.1029/2012JD017758

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      Key Points

      • MOPITT V4 bias on remote SH quantified to 5 ppb maximum
      • Bias correction necessary to fit both surface and satellite observations
      • South American biomass burning emissions underestimated by GFED3 in recent years
    4. Oxidant Production over Antarctic Land and its Export (OPALE) project: An overview of the 2010–2011 summer campaign

      Susanne Preunkert, Gérard Ancellet, Michel Legrand, Alexandre Kukui, Michael Kerbrat, Roland Sarda-Estève, Valérie Gros and Bruno Jourdain

      Article first published online: 9 AUG 2012 | DOI: 10.1029/2011JD017145

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      Key Points

      • Strong oxidative capacity at east Antarctic coastal site
    5. Aromatic hydrocarbons as ozone precursors before and after outbreak of the 2008 financial crisis in the Pearl River Delta region, south China

      Yanli Zhang, Xinming Wang, Donald R. Blake, Longfeng Li, Zhou Zhang, Shaoyi Wang, Hai Guo, Frank S. C. Lee, Bo Gao, Loyin Chan, Dui Wu and F. Sherwood Rowland

      Article first published online: 7 AUG 2012 | DOI: 10.1029/2011JD017356

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      Key Points

      • Levels and OFPs for aromatics dropped drastically after the financial crisis
      • Typical ratios and PMF results revealed reduced industrial emission of aromatics
      • Small enterprises were major contributor of aromatics from industry in PRD
    6. Experimental evidence for direct sesquiterpene emission from soils

      Eszter Horváth, András Hoffer, Flóra Sebők, Csaba Dobolyi, Sándor Szoboszlay, Balázs Kriszt and András Gelencsér

      Article first published online: 4 AUG 2012 | DOI: 10.1029/2012JD017781

      Key Points

      • Soils are shown to emit sesquiterpenes
      • SQT fluxes from soil are significant
      • VOC inventories should include soil emission
    7. Ozone source apportionment (OSAT) to differentiate local regional and super-regional source contributions in the Pearl River Delta region, China

      Y. Li, A. K.-H. Lau, J. C.-H. Fung, J. Y. Zheng, L. J. Zhong and P. K. K. Louie

      Article first published online: 4 AUG 2012 | DOI: 10.1029/2011JD017340

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      Key Points

      • Super-regional contribution is dominant during non-episode days
      • Local and regional sources become larger and are the main cause of ozone episodes
      • Mobile source is the dominant source category for ozone formation in the PRD
    8. Global in-cloud production of secondary organic aerosols: Implementation of a detailed chemical mechanism in the GFDL atmospheric model AM3

      Junfeng Liu, Larry W. Horowitz, Songmiao Fan, Annmarie G. Carlton and Hiram Levy II

      Article first published online: 2 AUG 2012 | DOI: 10.1029/2012JD017838

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      Key Points

      • IC-SOA is an important source of organic aerosols
      • Glycolaldehyde and acetic acid are important IC-SOA precursors
      • IC-SOA Prod. is sensitive to the implementations of cloud fraction and lifetime
    9. You have free access to this content
      Correction to “Isotopic characterization of aerosol organic carbon components over the eastern United States”

      Andrew S. Wozniak, James E. Bauer, Rebecca M. Dickhut, Li Xu and Ann P. McNichol

      Article first published online: 2 AUG 2012 | DOI: 10.1029/2012JD018478

      This article corrects:

      Isotopic characterization of aerosol organic carbon components over the eastern United States

      Vol. 117, Issue D13, Article first published online: 4 JUL 2012

    10. Tropospheric chemistry of internally mixed sea salt and organic particles: Surprising reactivity of NaCl with weak organic acids

      Alexander Laskin, Ryan C. Moffet, Mary K. Gilles, Jerome D. Fast, Rahul A. Zaveri, Bingbing Wang, Pascal Nigge and Janani Shutthanandan

      Article first published online: 2 AUG 2012 | DOI: 10.1029/2012JD017743

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      Key Points

      • Sea salt particles react with organic acids
      • Atmospheric aging of sea salt results in formation of organic salts
      • Organic acids deplete chloride in sea salt particles
    11. Uncertainties in the assessment of the isotopic composition of surface fluxes: A direct comparison of techniques using laser-based water vapor isotope analyzers

      Stephen P. Good, Keir Soderberg, Lixin Wang and Kelly K. Caylor

      Article first published online: 1 AUG 2012 | DOI: 10.1029/2011JD017168

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      Key Points

      • Methods comparison for the isotopic composition of surface flux
      • Keeling plot and flux-gradient methods have similar uncertainty for fluxes
      • Eddy covariance method results in larger uncertainty in isotope fluxes

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