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Journal of Geophysical Research: Atmospheres (1984–2012)

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

16 May 2012

Volume 117, Issue D9

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. You have free access to this content
      An improved radiance simulation for hyperspectral infrared remote sensing of Asian dust

      Hyo-Jin Han, Byung-Ju Sohn, Hung-Lung Huang, Elisabeth Weisz, Roger Saunders and Tamio Takamura

      Article first published online: 15 MAY 2012 | DOI: 10.1029/2012JD017466

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      Key Points

      • Improvement of hyperspectral IR radiance simulation under Asian dust
      • Mie calculation based on estimated size distribution for Asian dust
      • Finding best available IR refractive index for Asian dust simulation
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      Aeolian transport in the field: A comparison of the effects of different surface treatments

      Zhibao Dong, Ping Lv, Zhengcai Zhang, Guangqiang Qian and Wanyin Luo

      Article first published online: 11 MAY 2012 | DOI: 10.1029/2012JD017538

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      Key Points

      • Aeolian transport on three field plots of different type is discussed
      • The flux density profiles are defined in terms of surface type and wind speed
      • Transport rate is well correlated to drift potential
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      Evaluating the “critical relative humidity” as a measure of subgrid-scale variability of humidity in general circulation model cloud cover parameterizations using satellite data

      Johannes Quaas

      Article first published online: 10 MAY 2012 | DOI: 10.1029/2012JD017495

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      Key Points

      • Critical relative humidity is shown to be observable and computed from satellite data
      • This is useful to evaluate parameterizations directly
      • Current parameterizations need correction, leading to larger climate sensitivity
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      Comparison of shadow-ring correction models for diffuse solar irradiance

      G. Sánchez, A. Serrano, M. L. Cancillo and J. A. García

      Article first published online: 9 MAY 2012 | DOI: 10.1029/2011JD017346

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      Key Points

      • It is convenient to adapt the empirical models to the local measurements
      • Locally fitted empirical models perform better than globally valid theoretical models
      • LeBaron et al.'s model shows the best behavior followed by Batlles et al.'s model
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      Airborne validation of cirrus cloud properties derived from CALIPSO lidar measurements: Optical properties

      Dennis L. Hlavka, John E. Yorks, Stuart A. Young, Mark A. Vaughan, Ralph E. Kuehn, Matthew J. McGill and Sharon D. Rodier

      Article first published online: 9 MAY 2012 | DOI: 10.1029/2011JD017053

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      Key Points

      • Results are from coincident CALIOP/CPL ice cloud optical measurements
      • Discrepancies are found in opaque layers and within horizontally oriented ice
      • There is generally good agreement outside the two discovered discrepancies
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      Atmospheric Infrared Sounder (AIRS) sounding evaluation and analysis of the pre-convective environment

      Danelle Botes, John R. Mecikalski and Gary J. Jedlovec

      Article first published online: 9 MAY 2012 | DOI: 10.1029/2011JD016996

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      Key Points

      • AIRS soundings provide useful information in the preconvective environment
      • Inversions in AIRS soundings can be reconstructed
      • AIRS soundings can be de-biased to gauge actual instability
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      Importance of composition and hygroscopicity of BC particles to the effect of BC mitigation on cloud properties: Application to California conditions

      Ranjit Bahadur, Lynn M. Russell, Mark Z. Jacobson, Kimberly Prather, Athanasios Nenes, Peter Adams and John H. Seinfeld

      Article first published online: 5 MAY 2012 | DOI: 10.1029/2011JD017265

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      Key Points

      • Black carbon mitigation results in a decrease in cloud droplet number
      • Internal mixtures with hygroscopic species increase the effect of BC mitigation
      • CDN reduction may result in an offset to the direct forcing effect of BC
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      Sensitivity of stratospheric geoengineering with black carbon to aerosol size and altitude of injection

      Ben Kravitz, Alan Robock, Drew T. Shindell and Mark A. Miller

      Article first published online: 4 MAY 2012 | DOI: 10.1029/2011JD017341

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      Key Points

      • Climate effects of BC geoengineering are sensitive to particle size and altitude
      • Stratospheric heating from BC geoengineering can cause large climate impacts
      • BC geoengineering is likely expensive with current technology
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      An observational study of aerosol and turbulence properties during dust storms in northwest China

      Peijian Fu, Shiyuan Zhong, Jianping Huang and Guangning Song

      Article first published online: 2 MAY 2012 | DOI: 10.1029/2011JD016696

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      Key Points

      • Asian sandstorms are very important phenomenon for Asia-Pacific region
      • A field observation at the desert area is described
      • Some characteristics of sandstorms are presented
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      Volcanic ash over Scandinavia originating from the Grímsvötn eruptions in May 2011

      M. Tesche, P. Glantz, C. Johansson, M. Norman, A. Hiebsch, A. Ansmann, D. Althausen, R. Engelmann and P. Seifert

      Article first published online: 2 MAY 2012 | DOI: 10.1029/2011JD017090

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      Key Points

      • Observation of the dispersion of the ash plume of Grimsvotn volcano
      • Presentation of ash mass concentrations at the surface and within the ash plume
      • Observations of ash throughout southern Scandinavia
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  2. Climate and Dynamics

    1. Top of page
    2. Aerosol and Clouds
    3. Climate and Dynamics
    4. Composition and Chemistry
    1. You have free access to this content
      Evaluation of atmospheric boundary layer–surface process relationships in a regional climate model along an East Antarctic traverse

      Annette Rinke, Yongfeng Ma, Lingen Bian, Yufei Xin, Klaus Dethloff, P. Ola G. Persson, Christof Lüpkes and Cunde Xiao

      Article first published online: 15 MAY 2012 | DOI: 10.1029/2011JD016441

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      Key Points

      • Evaluation of boundary layer-surface process relationships
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      The initial stage processes of rocket-and-wire triggered lightning as observed by VHF interferometry

      S. Yoshida, C. J. Biagi, V. A. Rakov, J. D. Hill, M. V. Stapleton, D. M. Jordan, M. A. Uman, T. Morimoto, T. Ushio, Z.-I. Kawasaki and M. Akita

      Article first published online: 15 MAY 2012 | DOI: 10.1029/2012JD017657

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      Key Points

      • Charge transfer processes associated with initial continuing current are shown
      • Separate in-cloud leaders can cause current pulses as well as recoil leaders
      • Separate in-cloud leaders can also cause bipolar lightning
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      On hurricane parametric wind and applications in storm surge modeling

      Ning Lin and Daniel Chavas

      Article first published online: 15 MAY 2012 | DOI: 10.1029/2011JD017126

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      Key Points

      • Developed a parametric representation of the hurricane surface background wind
      • Investigated uncertainties in the extreme wind and surge modeling
      • Detected incorrect wind parameters that can induce large errors
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      How well do we know recent climate trends at the tropical tropopause?

      James S. Wang, Dian J. Seidel and Melissa Free

      Article first published online: 15 MAY 2012 | DOI: 10.1029/2012JD017444

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      Key Points

      • We rigorously examined observations of tropical tropopause climate trends
      • Recent tropopause cooling is of uncertain magnitude and significance
      • Our results are consistent with simple and complex climate models
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      Detection of Rossby wave breaking and its response to shifts of the midlatitude jet with climate change

      Elizabeth A. Barnes and Dennis L. Hartmann

      Article first published online: 11 MAY 2012 | DOI: 10.1029/2012JD017469

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      Key Points

      • Algorithm for the detection of Rossby wave breaking on pressure surfaces
      • Cyclonic wave breaking may decrease with a poleward shift of the jet
      • There is a limit to how far poleward wave breaking will shift with the jet
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      A technique using principal component analysis to compare seasonal cycles of Earth radiation from CERES and model computations

      G. Louis Smith, Pamela E. Mlynczak and Gerald L. Potter

      Article first published online: 11 MAY 2012 | DOI: 10.1029/2011JD017343

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      Key Points

      • We give a method for comparing seasonal cycles of data sets
      • Principal components are a way to compare time response in data sets
      • CERES radiation flux data are a strong check for climate models
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      Is geometry more universal than physics in atmospheric boundary layer flow?

      D. Belušić and L. Mahrt

      Article first published online: 10 MAY 2012 | DOI: 10.1029/2011JD016987

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      Key Points

      • Organized structures are recognized as different geometrical shapes
      • The physics of the flow changes for different shapes and time scales
      • The geometry of the flow does not depend on time scale
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      Wind and temperature response of midlatitude mesopause region to the 2009 Sudden Stratospheric Warming

      Tao Yuan, B. Thurairajah, C.-Y. She, A. Chandran, R. L. Collins and D. A. Krueger

      Article first published online: 9 MAY 2012 | DOI: 10.1029/2011JD017142

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      Key Points

      • Lidar observed temperature, wind anomalous behaviors during 2009 SSW
      • Satellite observations confirmed such anomalous behaviors were due to SSW
      • Model and satellite prove planetary wave extends the SSW system to midlatitude
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      Evaluation of SMOS retrievals of soil moisture over the central United States with currently available in situ observations

      Thomas W. Collow, Alan Robock, Jeffrey B. Basara and Bradley G. Illston

      Article first published online: 9 MAY 2012 | DOI: 10.1029/2011JD017095

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      Key Points

      • SMOS evaluation is difficult due to high spatial variability of soil moisture
      • SMOS soil moisture data has a dry bias
      • RFI may be affecting SMOS soil moisture retrievals in the northern United States
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      Toward a robust retrieval of snow accumulation over the Antarctic ice sheet using satellite radar

      W. Dierking, S. Linow and W. Rack

      Article first published online: 8 MAY 2012 | DOI: 10.1029/2011JD017227

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      Key Points

      • New model for calculating radar volume scattering of ice sheets
      • Use of model for accumulation rate retrieval over ice sheets
      • Consideration of technical and environmental factors for robust retrieval
      Corrected by:

      Correction: Correction to “Toward a robust retrieval of snow accumulation over the Antarctic ice sheet using satellite radar”

      Vol. 118, Issue 8, 3258, Article first published online: 25 APR 2013

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      TWP-ICE global atmospheric model intercomparison: Convection responsiveness and resolution impact

      Yanluan Lin, L. J. Donner, J. Petch, P. Bechtold, J. Boyle, S. A. Klein, T. Komori, K. Wapler, M. Willett, X. Xie, M. Zhao, S. Xie, S. A. McFarlane and C. Schumacher

      Article first published online: 8 MAY 2012 | DOI: 10.1029/2011JD017018

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      Key Points

      • Simulated cloud properties depend strongly on model physics
      • Resolution impacts precipitation diurnal cycle
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      A description of the Ross Ice Shelf air stream (RAS) through the use of self-organizing maps (SOMs)

      Mark W. Seefeldt and John J. Cassano

      Article first published online: 8 MAY 2012 | DOI: 10.1029/2011JD016857

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      Key Points

      • The RAS is found to be present primarily when associated with a cyclone
      • There is a strong seasonality to the RAS
      • The structure and position of the RAS is related to the position of the cyclone
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      Chemistry-climate model simulations of recent trends in lower stratospheric temperature and stratospheric residual circulation

      Lei Wang and Darryn W. Waugh

      Article first published online: 5 MAY 2012 | DOI: 10.1029/2011JD017130

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      Key Points

      • CCMs can reproduce observed lower stratospheric temperature trend seasonal cycle
      • Simulated trends vary greatly among ensemble members of the same model
      • In models, trends are due to internal variability rather than external forcing
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      Assessment of evolving TRMM-based multisatellite real-time precipitation estimation methods and their impacts on hydrologic prediction in a high latitude basin

      Bin Yong, Yang Hong, Li-Liang Ren, Jonathan J. Gourley, George J. Huffman, Xi Chen, Wen Wang and Sadiq I. Khan

      Article first published online: 5 MAY 2012 | DOI: 10.1029/2011JD017069

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      Key Points

      • Evaluated the hydrologic potential of TMPA-RT over its 3 major periods
      • The results will offer hydrologic users of TMP-RT data a better understanding
      • The evaluation framework can apply to future GPM-era products
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      Impact of Greenland's topographic height on precipitation and snow accumulation in idealized simulations

      M. Z. Hakuba, D. Folini, M. Wild and C. Schär

      Article first published online: 3 MAY 2012 | DOI: 10.1029/2011JD017052

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      Key Points

      • Reduced Greenland topography increases precipitation over the ice sheet
      • Changes in precipitation amount and pattern relate to changes in circulation
      • Reduced topographic height turns mass balance negative despite enhanced snowfall
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      Evaluation of momentum and sensible heat fluxes in constant density coordinates: Application to superpressure balloon data during the VORCORE campaign

      R. L. Walterscheid, L. J. Gelinas, C. R. Mechoso and G. Schubert

      Article first published online: 2 MAY 2012 | DOI: 10.1029/2011JD016731

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      Key Points

      • Constant density coordinates are a natural system for superpressure balloon data
      • Largest momentum fluxes are over Antarctic Peninsula
      • Heat flux divergence is a significant fraction of stratospheric heat imbalance
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      Influence of anomalous dry conditions on aerosols over India: Transport, distribution and properties

      D. G. Kaskaoutis, R. Gautam, R. P. Singh, E. E. Houssos, D. Goto, S. Singh, A. Bartzokas, P. G. Kosmopoulos, M. Sharma, N. C. Hsu, B. N. Holben and T. Takemura

      Article first published online: 2 MAY 2012 | DOI: 10.1029/2011JD017314

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      Key Points

      • A synergy of satellite and ground-based radiometric observations
      • Studied the dry anomalous period from the climatological mean
      • Increase in aerosol loading observed over northern India including IGP
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      QBO modulation of traveling planetary waves during northern winter

      Hua Lu, Dora Pancheva, Plamen Mukhtarov and Ingrid Cnossen

      Article first published online: 2 MAY 2012 | DOI: 10.1029/2011JD016901

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      Key Points

      • Traveling as well as standing planetary waves are modulated by the QBO
      • The QBO effect is most significant for the waves with periods of 22.5-30 days
      • QBO modulation of eastward traveling planetary waves extends to the mesosphere
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      Impact of a cloud thermodynamic phase parameterization based on CALIPSO observations on climate simulation

      Anning Cheng, Kuan-Man Xu, Yongxiang Hu and Seiji Kato

      Article first published online: 1 MAY 2012 | DOI: 10.1029/2011JD017263

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      Key Points

      • Examine the impact of a new mixed-phase parameterization in GCM simulations
      • Reveal small impacts to the global mean LWP/IWP, but large regional impacts
      • Notice a deficiency in cloud fraction parameterization based solely upon RH
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      Integration of remote-sensing data with WRF to improve lake-effect precipitation simulations over the Great Lakes region

      Lin Zhao, Jiming Jin, Shih-Yu Wang and Michael B. Ek

      Article first published online: 1 MAY 2012 | DOI: 10.1029/2011JD016979

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      Key Points

      • Improve regional climate simulations
      • Integration remote-sensing data with a regional climate model
      • Quantify the biases in the reanalysis data
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      Uncertainties in relative atmospheric angular momentum computed from zonal winds in reanalysis data

      Elfrun Lehmann and Peter Névir

      Article first published online: 1 MAY 2012 | DOI: 10.1029/2011JD016658

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      Key Points

      • Tropical east Pacific bias in computed relative AAM
      • ERA-40 shows weaker tropical tropospheric easterly winds than NCEP1
      • Uncertainties in zonal winds from reanalyses
  3. Composition and Chemistry

    1. Top of page
    2. Aerosol and Clouds
    3. Climate and Dynamics
    4. Composition and Chemistry
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      Ozone and alkyl nitrate formation from the Deepwater Horizon oil spill atmospheric emissions

      J. A. Neuman, K. C. Aikin, E. L. Atlas, D. R. Blake, J. S. Holloway, S. Meinardi, J. B. Nowak, D. D. Parrish, J. Peischl, A. E. Perring, I. B. Pollack, J. M. Roberts, T. B. Ryerson and M. Trainer

      Article first published online: 11 MAY 2012 | DOI: 10.1029/2011JD017150

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      Key Points

      • C5-C10 alkanes dominated OH loss rate in the atmospheric Deepwater Horizon plume
      • NOx rapidly oxidized downwind from DWH, forming heavier alkyl nitrates
      • O3 formed promptly in the atmosphere, with moderate yield
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      Precipitating radiation belt electrons and enhancements of mesospheric hydroxyl during 2004–2009

      Monika E. Andersson, Pekka T. Verronen, Shuhui Wang, Craig J. Rodger, Mark A. Clilverd and Bonar R. Carson

      Article first published online: 10 MAY 2012 | DOI: 10.1029/2011JD017246

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      Key Points

      • Mesospheric hydroxyl increases by radiation belt electron precipitation observed
      • Largest effects found at 70–78 km altitudes and 55–72 deg of magnetic latitude
      • 65 months analyzed between 2004–2009; clear electron impact in 34% of cases
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      Emission and transport of cesium-137 from boreal biomass burning in the summer of 2010

      Sarah A. Strode, Lesley E. Ott, Steven Pawson and Theodore W. Bowyer

      Article first published online: 9 MAY 2012 | DOI: 10.1029/2011JD017382

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      Key Points

      • Cs-137 was remobilized by boreal biomass burning in summer of 2010
      • Enhanced Cs-137 detections related to high aerosol optical depth
      • Model shows small northward redistribution of Cs-137 from boreal fires
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      Horizontal transport affecting trace gas seasonality in the Tropical Tropopause Layer (TTL)

      F. Ploeger, P. Konopka, R. Müller, S. Fueglistaler, T. Schmidt, J. C. Manners, J.-U. Grooß, G. Günther, P. M. Forster and M. Riese

      Article first published online: 9 MAY 2012 | DOI: 10.1029/2011JD017267

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      Key Points

      • Horizontal transport affects O3 annual cycle in TTL - H2O and CO unaffected
      • Horizontal transport into TTL is driven by monsoon anticyclones
      • At least 30% summer O3 and 65% annual amplitude linked to horizontal transport
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      Changes in ozone over Europe: Analysis of ozone measurements from sondes, regular aircraft (MOZAIC) and alpine surface sites

      J. A. Logan, J. Staehelin, I. A. Megretskaia, J.-P. Cammas, V. Thouret, H. Claude, H. De Backer, M. Steinbacher, H.-E. Scheel, R. Stübi, M. Fröhlich and R. Derwent

      Article first published online: 4 MAY 2012 | DOI: 10.1029/2011JD016952

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      Key Points

      • Small decrease or zero trend in tropospheric ozone over Europe since late 1990s
      • Increases in ozone prior to late 1990s, but inconsistencies among data sets
      • Difficult to reconcile trends before late 1990s with known influences on ozone

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