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Journal of Geophysical Research: Atmospheres (1984–2012)

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

27 December 2011

Volume 116, Issue D24

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
      Assessment of MODIS cloud effective radius and optical thickness retrievals over the Southeast Pacific with VOCALS-REx in situ measurements

      David Painemal and Paquita Zuidema

      Article first published online: 30 DEC 2011 | DOI: 10.1029/2011JD016155

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      Key Points

      • MODIS cloud effective radius overestimates the in situ observations
      • MODIS bias cannot be explained by the vertical structure or droplet spectra
      • MODIS-derived number of droplets show the best agreement with the observations
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      A search for large-scale effects of ship emissions on clouds and radiation in satellite data

      K. Peters, J. Quaas and H. Graßl

      Article first published online: 30 DEC 2011 | DOI: 10.1029/2011JD016531

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      Key Points

      • Satellite data reveals no effect of ship emissions on clouds over remote oceans
      • Ambient meteorology must be accounted for when analyzing aerosol indirect effects
      • Aerosol indirect effects as suggested by global modeling are not found
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      Multi-instrumental observation of an exceptionally strong Saharan dust outbreak over Portugal

      J. Preißler, F. Wagner, S. N. Pereira and J. L. Guerrero-Rascado

      Article first published online: 29 DEC 2011 | DOI: 10.1029/2011JD016527

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      Key Points

      • Combination of instruments for a thorough charactirization mineral dust
      • Vertical and temporal distribution of a dust plume, observed in Portugal
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      Dust charging and density conditions deduced from observations of PMWE modulated by artificial electron heating

      O. Havnes, C. La Hoz, M. T. Rietveld, M. Kassa, G. Baroni and A. Biebricher

      Article first published online: 29 DEC 2011 | DOI: 10.1029/2011JD016411

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      Key Points

      • Relaxation time of PMWE under artificial heating is found to be 60-70 sec
      • Photo detachment is the most likely cause of the observed relaxation
      • Electron depletion is consistent with role of charged dust in PMWE
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      Comparison of MISR and Meteosat-9 cloud-motion vectors

      Katrin Lonitz and Ákos Horváth

      Article first published online: 24 DEC 2011 | DOI: 10.1029/2011JD016047

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      Key Points

      • More accurate MISR cloud-motion vector heights in broken stratocumulus
      • Detection of slight cross-swath bias in MISR cloud-motion vectors
      • Good agreement in stratocumulus but larger differences in tropics
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      High altitude (∼4520 m amsl) measurements of black carbon aerosols over western trans-Himalayas: Seasonal heterogeneity and source apportionment

      S. Suresh Babu, Jai Prakash Chaubey, K. Krishna Moorthy, Mukunda M. Gogoi, Sobhan Kumar Kompalli, V. Sreekanth, S. P. Bagare, Bhuvan C. Bhatt, Vinod K. Gaur, Tushar P. Prabhu and N. S. Singh

      Article first published online: 22 DEC 2011 | DOI: 10.1029/2011JD016722

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      Key Points

      • First ever year round high altitude measurements of BC aerosols over Himalayas
      • High values of BC associated with advection from west or southwest Asia
      • Low BC values compared to other low altitude Himalyan stations
  2. Climate and Dynamics

    1. Top of page
    2. Aerosol and Clouds
    3. Climate and Dynamics
    4. Composition and Chemistry
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      Correction to “Relationships between MODIS and ATSR fires and atmospheric variability in New Caledonia (SW Pacific)”

      Renaud Barbero, Vincent Moron, Morgan Mangeas, Marc Despinoy and Christelle Hély

      Article first published online: 31 DEC 2011 | DOI: 10.1029/2011JD017260

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      Vertical variation of low-frequency oscillations in UHF radar derived winds at a tropical Indian station

      Sachin M. Deshpande, P. Ernest Raj and Mahen Konwar

      Article first published online: 31 DEC 2011 | DOI: 10.1029/2011JD016226

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      Key Points

      • Signatures of monsoon ISO using wind profiler
      • Dominant mode of oscillation is 30-40 days
      • Vertical structures of rainfall intensity and oscillation are compared
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      Extreme value indicators in highly resolved climate change simulations for the Jordan River area

      R. Samuels, G. Smiatek, S. Krichak, H. Kunstmann and P. Alpert

      Article first published online: 30 DEC 2011 | DOI: 10.1029/2011JD016322

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      Key Points

      • The simulations show a future temperature increase in range of 2.5-3 degrees
      • Dry spells are simulated to increase in the future
      • Increase in heavy rainfall despite the decrease in annual mean precipitation
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      Evidence for the influence of the North Atlantic Oscillation on the total ozone column at northern low latitudes and midlatitudes during winter and summer seasons

      Albert Ossó, Yolanda Sola, Joan Bech and Jerónimo Lorente

      Article first published online: 29 DEC 2011 | DOI: 10.1029/2011JD016539

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      Key Points

      • SNAO accounts for up to 30% of the total ozone column variability
      • SNAO and NAO has an inverse behavior on TOC values over Southern Europe
      • SNAO influences tropical TOC values by means of teleconnections
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      Greenland Ice Sheet surface mass balance 1870 to 2010 based on Twentieth Century Reanalysis, and links with global climate forcing

      Edward Hanna, Philippe Huybrechts, John Cappelen, Konrad Steffen, Roger C. Bales, Evan Burgess, Joseph R. McConnell, Joergen Peder Steffensen, Michiel Van den Broeke, Leanne Wake, Grant Bigg, Mike Griffiths and Deniz Savas

      Article first published online: 28 DEC 2011 | DOI: 10.1029/2011JD016387

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      Key Points

      • Extends Greenland surface mass balance record
      • Highlights remaining surface mass balance uncertainties
      • Explores links with climate change since 1870
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      Correction to “Role of medium-scale waves on the Southern Annular Mode”

      Yuhji Kuroda and Hitoshi Mukougawa

      Article first published online: 24 DEC 2011 | DOI: 10.1029/2011JD017241

      This article corrects:

      Role of medium-scale waves on the Southern Annular Mode

      Vol. 116, Issue D22, Article first published online: 19 NOV 2011

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      Evaluating runoff simulations from the Community Land Model 4.0 using observations from flux towers and a mountainous watershed

      Hongyi Li, Maoyi Huang, Mark S. Wigmosta, Yinghai Ke, André M. Coleman, L. Ruby Leung, Aihui Wang and Daniel M. Ricciuto

      Article first published online: 24 DEC 2011 | DOI: 10.1029/2011JD016276

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      Key Points

      • Streamflow simulations from CLM4 were evaluated against observations
      • We identified potential ways to improve streamflow simulations from CLM4
      • It is important to evaluate both streamflow and energy fluxes from land models
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      Impact of the inundation occurrence on the deep convection at continental scale from satellite observations and modeling experiments

      C. Prigent, N. Rochetin, F. Aires, E. Defer, J.-Y. Grandpeix, C. Jimenez and F. Papa

      Article first published online: 24 DEC 2011 | DOI: 10.1029/2011JD016311

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      Key Points

      • Evidence of the impact of inundation on the deep convection at continental scale
      • Impact observed from remote sensing
      • Impact simulated with a 1-D model
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      Evaluating the observed variability in hyperspectral Earth-reflected solar radiance

      Yolanda L. Roberts, Peter Pilewskie and Bruce C. Kindel

      Article first published online: 24 DEC 2011 | DOI: 10.1029/2011JD016448

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      Key Points

      • Multivariate analysis quantified variance in observed hyperspectral radiance
      • Climate-relevant variables detected in radiances by principal component analysis
      • Variability of radiance can be used for climate change detection and attribution
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      Evaluation of surface albedo from GEWEX-SRB and ISCCP-FD data against validated MODIS product over the Tibetan Plateau

      Jun Qin, Kun Yang, Shunlin Liang, Hao Zhang, Yaoming Ma, Xiaofeng Guo and Zhuoqi Chen

      Article first published online: 23 DEC 2011 | DOI: 10.1029/2011JD015823

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      Key Points

      • The MODIS albedo performs well in the snow-free period over the Tibetan Plateau
      • The albedos in ISCCP-DX and GEWEX-SRB have negative biases on the whole
      • The MODIS albedo could be introduced when producing the ISCCP-DX and GEWEX-SRB
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      El Niño–Southern Oscillation and snow level in the western United States

      Bohumil M. Svoma

      Article first published online: 23 DEC 2011 | DOI: 10.1029/2011JD016287

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      Key Points

      • Except for the southern Rockies, El Nino events are linked to high snow level
      • No evidence for a La Nina signal in snow level
      • Results can aid in seasonal watershed runoff forecasts
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      An alternative explanation of the semiarid urban area “oasis effect”

      M. Georgescu, M. Moustaoui, A. Mahalov and J. Dudhia

      Article first published online: 22 DEC 2011 | DOI: 10.1029/2011JD016720

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      Key Points

      • Characterization of Phoenix urban area diurnal cycle
      • Successful simulation of semiarid urban area oasis effect
      • Impact of urbanization on the diurnal cycle depends on surrounding environment
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      Climatic effects of surface albedo geoengineering

      Peter J. Irvine, Andy Ridgwell and Daniel J. Lunt

      Article first published online: 22 DEC 2011 | DOI: 10.1029/2011JD016281

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      Key Points

      • Compares the climate impacts of three surface albedo geoengineering schemes
      • Some of the schemes cause large changes in circulation and patterns of rainfall
      • Desert albedo schemes strongly reduce rainfall in monsoon regions
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      Transient regional climate change: Analysis of the summer climate response in a high-resolution, century-scale ensemble experiment over the continental United States

      Noah S. Diffenbaugh, Moetasim Ashfaq and Martin Scherer

      Article first published online: 22 DEC 2011 | DOI: 10.1029/2011JD016458

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      Key Points

      • Report results of the first high-resolution, century-scale ensemble simulation
      • Contrast between time of emergence of robust warming and magnitude of warming
      • Surface-atmosphere coupling amplifies warming but reduces robustness of signal
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      An astronomically tuned 8.1 Ma eolian record from the Chinese Loess Plateau and its implication on the evolution of Asian monsoon

      Wenxia Han, Xiaomin Fang, André Berger and Qiuzhen Yin

      Article first published online: 22 DEC 2011 | DOI: 10.1029/2011JD016237

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      Key Points

      • An 8.1 Ma astronomically tuned high resolution eolian record on Loess Plateau
      • Stepwise intensification of the winter monsoon at 5.5, 3.6, 2.6 and 1 Ma
      • Synchronous intensification of three orbital periodicities in record at 5.5 Ma
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      Relationship between the stratospheric quasi-biennial oscillation and tropospheric circulation in northern autumn

      Makoto Inoue, Masaaki Takahashi and Hiroaki Naoe

      Article first published online: 22 DEC 2011 | DOI: 10.1029/2011JD016040

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      Key Points

      • Relationship between QBO and troposphere in Northern Hemisphere autumn
      • Beginning and development of Holton-Tan relationship
      • Wave activity and meridional circulation associated with the QBO phases
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      Diagnosing water variations within the Amazon basin using satellite data

      Marzieh Azarderakhsh, William B. Rossow, Fabrice Papa, Hamidreza Norouzi and Reza Khanbilvardi

      Article first published online: 21 DEC 2011 | DOI: 10.1029/2011JD015997

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      Key Points

      • Understand dynamics of water movement in large tropical regions
      • Introduce a new simple routing method for large scale studies
      • Investigate inter-annual variations of water budget component
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      Effects of short spin-up periods on soil moisture simulation and the causes over New Zealand

      Yang Yang, Michael Uddstrom and Maurice Duncan

      Article first published online: 21 DEC 2011 | DOI: 10.1029/2011JD016121

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      Key Points

      • A few months may or may not be used to spin up a LSM instead of one year
      • We have investigated the conditions when and the reasons why this can be done
      • We suggested the dominant control parameter: E/R ratios
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      On the impact of middle-atmosphere thermal tides on the propagation and dissipation of gravity waves

      F. Senf and U. Achatz

      Article first published online: 21 DEC 2011 | DOI: 10.1029/2011JD015794

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      Key Points

      • Ray tracing of gravity waves in thermal tides provides important insights
      • The GW forcing on thermal tides is significantly reduced
      • Horizontal refraction and frequency modulation has to be taken into account
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      Tree ring cellulose δ18O of Fokienia hodginsii in northern Laos: A promising proxy to reconstruct ENSO?

      Chenxi Xu, Masaki Sano and Takeshi Nakatsuka

      Article first published online: 21 DEC 2011 | DOI: 10.1029/2011JD016694

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      Key Points

      • Delta18O of tree ring in Laos is a promising proxy to reconstruct ENSO
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      Lunar skylight polarization signal polluted by urban lighting

      C. C. M. Kyba, T. Ruhtz, J. Fischer and F. Hölker

      Article first published online: 17 DEC 2011 | DOI: 10.1029/2011JD016698

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      Key Points

      • Urban skyglow pollutes the lunar skylight polarization signal
      • Nocturnal animal polarization-based navigation will fail in lit urban areas
      • Urban skyglow is more polarized than previously predicted
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      A novel nonintrusive method to resolve the thermal dome effect of pyranometers: Radiometric calibration and implications

      Q. Ji, S.-C. Tsay, K. M. Lau, R. A. Hansell, J. J. Butler and J. W. Cooper

      Article first published online: 17 DEC 2011 | DOI: 10.1029/2011JD016466

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      Key Points

      • The uncertainty of a pyranometer is <1% if its thermal effect is accounted for
      • Radiometric calibrations were performed using NIST-traceable light sources
      • An improved pyranometer can play an important role in climate studies
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      Effects of subseasonal basic state changes on Rossby wave propagation during northern summer

      Kyung-Sook Yun, Seong-Yeol Kim, Kyung-Ja Ha and Masahiro Watanabe

      Article first published online: 17 DEC 2011 | DOI: 10.1029/2011JD016258

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      Key Points

      • Larger Rossby wave activity to mid-latitude forcing for August than for July
      • Larger Rossby wave activity to tropical forcing for July than for August
      • Different dynamical and thermal effects in July and August basic state
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      Intraseasonal isotopic variation associated with the Madden-Julian Oscillation

      Naoyuki Kurita, David Noone, Camille Risi, Gavin A. Schmidt, Hiroyuki Yamada and Kunio Yoneyama

      Article first published online: 17 DEC 2011 | DOI: 10.1029/2010JD015209

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      Key Points

      • We observe HDO variation associated with the Madden-Julian Oscillation (MJO)
      • We discuss new water cycle dynamics in the MJO convection
      • We show a usefulness of isotope tracers to the tropical meteorology
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      Simulation studies for the detection of changes in broadband albedo and shortwave nadir reflectance spectra under a climate change scenario

      Daniel R. Feldman, Chris A. Algieri, William D. Collins, Yolanda L. Roberts and Peter A. Pilewskie

      Article first published online: 17 DEC 2011 | DOI: 10.1029/2011JD016407

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      Key Points

      • Change detection with a time series of albedo measurements is spatially variable
      • Hyperspectral reflectance spectra detect change faster than albedo measurements
      • Measurement error lengthens the time required to detect climate change
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      Four climate change scenarios for the Indian summer monsoon by the regional climate model COSMO-CLM

      A. Dobler and B. Ahrens

      Article first published online: 17 DEC 2011 | DOI: 10.1029/2011JD016329

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      Key Points

      • The RCM projections show decreasing ISM trends from 1960 to 2100
      • No decrease in all-Indian monsoon rainfall can be found in the GCM projections
      • Different trends are due to a more reduced precipitation efficency in the RCM
  3. Composition and Chemistry

    1. Top of page
    2. Aerosol and Clouds
    3. Climate and Dynamics
    4. Composition and Chemistry
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      Atmospheric observations of carbon monoxide and fossil fuel CO2 emissions from East Asia

      Jocelyn C. Turnbull, Pieter P. Tans, Scott J. Lehman, David Baker, Thomas J. Conway, Y. S. Chung, Jay Gregg, John B. Miller, John R. Southon and Ling-Xi Zhou

      Article first published online: 30 DEC 2011 | DOI: 10.1029/2011JD016691

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      Key Points

      • China CO:CO2ff emission ratios are consistent with inventories
      • Observed CO2ff at TAP and SDZ sites are consistent with model and inventory
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      OH reaction rate constant, IR absorption spectrum, ozone depletion potentials and global warming potentials of 2-bromo-3,3,3-trifluoropropene

      Kenneth O. Patten, Victor G. Khamaganov, Vladimir L. Orkin, Steven L. Baughcum and Donald J. Wuebbles

      Article first published online: 30 DEC 2011 | DOI: 10.1029/2011JD016518

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      Key Points

      • The 2-bromo-3,3,3-trifluoropropene k(OH) and IR cross section are obtained
      • Modeling obtains a 7-day atmospheric lifetime, low ODP, and low GWP
      • Most ozone loss from this compound occurs in the troposphere
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      Functional forms for approximating the relative optical air mass

      Ígor Rapp-Arrarás and Juan M. Domingo-Santos

      Article first published online: 30 DEC 2011 | DOI: 10.1029/2011JD016706

      Key Points

      • Recalibration and comparison of 26 functional forms for approximating air mass
      • Approximation of the air mass in terms of continuous variable
      • New air mass approximation formulas with 1, 2, 3, 4, and 5 parameters
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      Budgets for nocturnal VOC oxidation by nitrate radicals aloft during the 2006 Texas Air Quality Study

      Steven S. Brown, William P. Dubé, Jeff Peischl, Thomas B. Ryerson, Elliot Atlas, Carsten Warneke, Joost A. de Gouw, Sacco te Lintel Hekkert, Charles A. Brock, Frank Flocke, Michael Trainer, David D. Parrish, Frederick C. Feshenfeld and A. R. Ravishankara

      Article first published online: 28 DEC 2011 | DOI: 10.1029/2011JD016544

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      Key Points

      • NO3 and VOC loss rates are quantified from nighttime flights in Texas
      • NO3 was lost primarily to reaction with anthropogenic VOCs (30–54%) and isoprene
      • VOC oxidation rates were up to 2 ppbv h-1 and NO3 was 3–5 times more important
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      Black carbon and its correlation with trace gases at a rural site in Beijing: Top-down constraints from ambient measurements on bottom-up emissions

      Yuxuan Wang, Xuan Wang, Yutaka Kondo, Mizuo Kajino, J. William Munger and Jiming Hao

      Article first published online: 28 DEC 2011 | DOI: 10.1029/2011JD016575

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      Key Points

      • Presented temporal variability in BC mass concentrations over North China
      • Quantified significant impact of wet deposition on [Delta][delta]BC/[Delta]CO ratio
      • Bottom-up BC/CO ratio higher than observations because of residential sector biases
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      Daily and 3-hourly variability in global fire emissions and consequences for atmospheric model predictions of carbon monoxide

      M. Mu, J. T. Randerson, G. R. van der Werf, L. Giglio, P. Kasibhatla, D. Morton, G. J. Collatz, R. S. DeFries, E. J. Hyer, E. M. Prins, D. W. T. Griffith, D. Wunch, G. C. Toon, V. Sherlock and P. O. Wennberg

      Article first published online: 24 DEC 2011 | DOI: 10.1029/2011JD016245

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      Key Points

      • We developed an approach to distribute daily and hourly fire emissions
      • Daily and hourly patterns of fire activity varied among different land types
      • Daily and hourly fire emissions improved CO simulations
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      Epilithic moss as a bio-monitor of atmospheric N deposition in South China

      Hua-Yun Xiao, Zhi-Ying Xie, Cong-Guo Tang, Yan-Li Wang and Cong-Qiang Liu

      Article first published online: 17 DEC 2011 | DOI: 10.1029/2011JD016229

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      Key Points

      • Using tissue N contents to estimate atmospheric N deposition
      • Identifying atmospheric N sources in South China
      • Assessing moss as a bio-monitor of atmospheric N deposition
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      Chemical and dynamical discontinuity at the extratropical tropopause based on START08 and WACCM analyses

      A. Kunz, L. L. Pan, P. Konopka, D. E. Kinnison and S. Tilmes

      Article first published online: 17 DEC 2011 | DOI: 10.1029/2011JD016686

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      Key Points

      • Consistency between the chemical discontinuity and PV gradient-based tropopause
      • PV gradient-based TP is effective in locating the physical boundary in the UTLS

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