Journal of Geophysical Research: Atmospheres (1984–2012)


  1. Climate and Dynamics

    1. Top of page
    2. Climate and Dynamics
    3. Ionosphere and Upper Atmosphere
    4. Magnetospheric Physics
    5. Regular Articles
    1. Inter-comparison of 11-year solar cycle response in mesospheric ozone and temperature obtained by HALOE satellite data and HAMMONIA model

      G. Beig, S. Fadnavis, H. Schmidt and Guy P. Brasseur

      Article first published online: 6 JAN 2012 | DOI: 10.1029/2011JD015697

      Key Points

      • Solar signal in mesospheric O3 and T from model simulations and satellite data
      • Solar cycle effects on low and mid latitudes and their inter-comparison
      • Influence of solar cycle on O3 and T diurnal cycle
    2. Long-term trends in Antarctic winter hydroxyl temperatures

      W. John R. French and A. R. Klekociuk

      Article first published online: 10 SEP 2011 | DOI: 10.1029/2011JD015731

      Key Points

      • Fifteen year observational record of hydroxyl temperatures in Antarctica
      • Measurement of solar cycle response and long-term linear trend
      • Examination of the influence of planetary waves and other dynamical indices
    3. Trends of mesospheric gravity waves at northern middle latitudes during summer

      P. Hoffmann, M. Rapp, W. Singer and D. Keuer

      Article first published online: 2 AUG 2011 | DOI: 10.1029/2011JD015717

      Key Points

      • Use of mesospheric wind trends to understand trends of gravity waves
      • Enhancement of gravity wave activity at mid-latitudes during summer
      • Significant correlation between summer jet at 75 km with GW activity at 80 km
    4. Long-term development of short-period gravity waves in middle Europe

      D. Offermann, J. Wintel, C. Kalicinsky, P. Knieling, R. Koppmann and W. Steinbrecht

      Article first published online: 23 JUL 2011 | DOI: 10.1029/2010JD015544

      Key Points

      • Gravity waves are measured by temperature standard deviations
      • Gravity waves show seasonal variations
      • Gravity waves increase by 1.5% per year in the mesosphere
    5. The temperature structure of the mesosphere over Taiwan and comparison with other latitudes

      Uma Das and C. J. Pan

      Article first published online: 20 JUL 2011 | DOI: 10.1029/2010JD015034

      Key Points

      • Mesopause altitude is always at higher level
      • MP temperature variation is in phase with solar energy inputs
      • A phase reversal in annual oscillation between 89–95 km
    6. Middle atmosphere temperature trend and solar cycle revealed by long-term Rayleigh lidar observations

      Tao Li, Thierry Leblanc, I. Stuart McDermid, Philippe Keckhut, Alain Hauchecorne and Xiankang Dou

      Article first published online: 23 JUN 2011 | DOI: 10.1029/2010JD015275

      Key Points

      • The temperature trend and solar cycle was studied with Rayleigh lidar data sets
      • The temperature cooling trend was found at TMF and OHP and was near zero at MLO
      • Positive response was found with negative response in winter stratosphere at OHP
    7. Uncertainties in mesopause temperature trend over Fort Collins, Colorado (41°N, 105°W), using the bootstrap Monte Carlo method

      David A. Krueger and Chiao-Yao She

      Article first published online: 10 JUN 2011 | DOI: 10.1029/2010JD015464

      Key Points

      • Discuss error bars in previous nonlinear fit to long-term mesopause temperatures
      • Use Monte Carlo bootstrap to determine uncertainties in fitting coefficients
      • Even though based on different assumptions, the two methods agree
    8. Latitudinal and interhemispheric variation of stratospheric effects on mesospheric ice layer trends

      F.-J. Lübken and U. Berger

      Article first published online: 6 MAY 2011 | DOI: 10.1029/2010JD015258

      Key Points

      • Model results show mesospheric ice cloud trends vary with latitude
      • Detection threshold for mesospheric ice clouds may influence trends
      • Interhemispheric trend difference mainly caused by induced H2O, not temperature
    9. Quasi 2 day waves in the summer mesosphere: Triple structure of amplitudes and long-term development

      D. Offermann, P. Hoffmann, P. Knieling, R. Koppmann, J. Oberheide, D. M. Riggin, V. M. Tunbridge and W. Steinbrecht

      Article first published online: 16 APR 2011 | DOI: 10.1029/2010JD015051

      Key Points

      • Two-day waves
      • Mesospheric instability
      • Summer mesosphere
  2. Ionosphere and Upper Atmosphere

    1. Top of page
    2. Climate and Dynamics
    3. Ionosphere and Upper Atmosphere
    4. Magnetospheric Physics
    5. Regular Articles
    1. Long-term changes in the thermospheric neutral winds over Arecibo: Climatology based on over three decades of Fabry-Perot observations

      Christiano Garnett Marques Brum, Craig A. Tepley, Jonathan T. Fentzke, Eva Robles, Pedrina Terra dos Santos and Sixto A. Gonzalez

      Article first published online: 19 JAN 2012 | DOI: 10.1029/2011JA016458

      Key Points

      • Long-term changes in the thermospheric neutral winds over Arecibo
    2. Using incoherent scatter radar to investigate the neutral wind long-term trend over Arecibo

      P. T. Santos, C. G. M. Brum, C. A. Tepley, N. Aponte, S. A. González and E. Robles

      Article first published online: 3 NOV 2011 | DOI: 10.1029/2011JA016514

      Key Points

      • The meridional wind along the magnetic field shows a long-term trend over Arecibo
      • ISR measurements confirmed a decreasing trend of hmF2 at Arecibo
      • A negative long-term trend of NmF2 also was observed by ISR measurements
    3. Long-term trends in the temperature of the mesosphere/lower thermosphere region: 2. Solar response

      Gufran Beig

      Article first published online: 18 OCT 2011 | DOI: 10.1029/2011JA016766

      Key Points

      • Temperature response to 11 year solar cycle in the mesospheric region
      • How natural variability plays a role in secular trends
      • Review of solar response in temperature of MLT region
    4. Long-term trends in the temperature of the mesosphere/lower thermosphere region: 1. Anthropogenic influences

      Gufran Beig

      Article first published online: 15 OCT 2011 | DOI: 10.1029/2011JA016646

      Key Points

      • Provides an update to an overview of anthropogenic signals
      • Cooling in the mesosphere due to anthropogenic activities
      • Break in secular trends near mesopause region
    5. Further evidence of long-term thermospheric density change using a new method of satellite ballistic coefficient estimation

      Arrun Saunders, Hugh Lewis and Graham Swinerd

      Article first published online: 13 OCT 2011 | DOI: 10.1029/2010JA016358

      Key Points

      • Long-term thermospheric density decline
      • Ballistic coefficient determination using TLE data
      • Validation of existing theories
    6. Statistical uncertainty of 1967–2005 thermospheric density trends derived from orbital drag

      J. T. Emmert and J. M. Picone

      Article first published online: 25 AUG 2011 | DOI: 10.1029/2010JA016382

      Key Points

      • 1967–2005 thermospheric density trend is −1.94 +/−1.35% per decade at 400 km
      • A rigorous uncertainty analysis was performed, incorporating autocorrelation
      • The method is applicable to trend analysis of other upper atmospheric parameters
    7. Effect of thermospheric contraction on remediation of the near-Earth space debris environment

      Hugh G. Lewis, Arrun Saunders, Graham Swinerd and Rebecca J. Newland

      Article first published online: 10 AUG 2011 | DOI: 10.1029/2011JA016482

      Key Points

      • Thermospheric decline reduces debris mitigation efficacy
      • Thermospheric decline reduces efficacy of debris removal
      • Increasing removal rate restores benefit of debris removal
    8. Causes of low thermospheric density during the 2007–2009 solar minimum

      Stanley C. Solomon, Liying Qian, Leonid V. Didkovsky, Rodney A. Viereck and Thomas N. Woods

      Article first published online: 13 JUL 2011 | DOI: 10.1029/2011JA016508

      Key Points

      • The primary cause of low thermospheric density was low solar EUV irradiance
      • Model simulations find that CO2 and geomagnetic activity play smaller roles
      • Solar and terrestrial observations show that solar minima can vary considerably
    9. Directional trends in thermospheric neutral winds observed at Arecibo during the past three solar cycles

      C. A. Tepley, E. Robles, R. García, P. T. Santos, C. M. Brum and R. G. Burnside

      Article first published online: 17 JUN 2011 | DOI: 10.1029/2010JA016172

      Key Points

      • Thermospheric neutral winds at Arecibo show a long-term trend over time
      • The vector magnitude of the wind increased slightly and its direction rotated CCW
      • Decreases in neutral density/temperature and ion coupling help explain trends
    10. Millstone Hill ISR observations of upper atmospheric long-term changes: Height dependency

      Shun-Rong Zhang, John M. Holt and James Kurdzo

      Article first published online: 24 MAY 2011 | DOI: 10.1029/2010JA016414

      Key Points

      • Upper atmospheric long-term trend based on incoherent scatter radar data
      • Direct evidence of the upper atmospheric temperature trend
      • Height dependence of the trends
    11. Global and regional trends in ionospheric total electron content

      J. L. Lean, J. T. Emmert, J. M. Picone and R. R. Meier

      Article first published online: 20 MAY 2011 | DOI: 10.1029/2010JA016378

      Key Points

      • Positive trend in ionospheric total electron content in past 15 years
      • Trend depends sensitively on solar EUV irradiance specification
      • Solar EUV irradiance levels similar in 2008 and 1996 solar minima
    12. Progress in observations and simulations of global change in the upper atmosphere

      Liying Qian, Jan Laštovička, Raymond G. Roble and Stanley C. Solomon

      Article first published online: 13 APR 2011 | DOI: 10.1029/2010JA016317

      Key Points

      • The steady increase of CO2 is the dominant cause of upper atmosphere trends
      • Progress has been made in observational and modeling studies in recent years
      • Changes in atmospheric dynamics is one of the critical open questions
    13. Long-term variation in the thermosphere: TIMED/GUVI observations

      Y. Zhang and Larry J. Paxton

      Article first published online: 5 APR 2011 | DOI: 10.1029/2010JA016337

      Key Points

      • Thermospheric O/N2 dependence on solar EUV flux
      • O/N2 variability due to magnetic storms, season and local time
      • Different O/N2 response to solar EUV increase and magnetic storms
  3. Magnetospheric Physics

    1. Top of page
    2. Climate and Dynamics
    3. Ionosphere and Upper Atmosphere
    4. Magnetospheric Physics
    5. Regular Articles
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  4. Regular Articles

    1. Top of page
    2. Climate and Dynamics
    3. Ionosphere and Upper Atmosphere
    4. Magnetospheric Physics
    5. Regular Articles
    1. Climate and Dynamics

      Trends in the F2 layer parameters at the end of the 1990s and the beginning of the 2000s (pages 5947–5964)

      A. D. Danilov and A. V. Konstantinova

      Article first published online: 17 JUN 2013 | DOI: 10.1002/jgrd.50501

      Key Points

      • Negative trends in critical frequency are derived for 1990-2010.
      • Negative trends in F2-layer height are derived for 1990-2010
      • It is found that scatter of foF2 and hmF2 increases with time

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