Seasonal variation of nocturnal temperatures between 1 and 105 km altitude at 54 N observed by lidar

Temperature soundings are performed by lidar at the mid-latitude station of Kuhlungsborn (Germany, 54° N, 12° E). The profiles cover the complete range from the lower troposphere (~1 km) to the lower thermosphere (~105 km) by simultaneous and co-located operation of a Rayleigh-Mie-Raman lidar and a potassium resonance lidar. Observations have been done during 266 nights between June 2002 and July 2007, each of 3–15 h length. This large and unique data set provides comprehensive information on the altitudinal and seasonal variation of temperatures from the troposphere to the lower thermosphere. The remaining day-to-day-variability is strongly reduced by harmonic fits at constant altitude levels and a representative data set is achieved. This data set reveals a two-level mesopause structure with an altitude of about 86–87 km (~144 K) in summer and ~102 km (~170 K) during the rest of the year. The average stratopause altitude is ~48 km throughout the whole year, with temperatures varying between 258 and 276 K. From the fit parameters amplitudes and phases of annual, semi-annual, and quarter-annual variations are derived. The amplitude of the annual component is largest with amplitudes of up to 30 K in 85 km, while the quarter-annual variation is smallest and less than 3 K at all altitudes. The lidar data set is compared with ECMWF temperatures below about 70 km altitude and reference data from the NRLMSISE-00 model above. Apart from the temperature soundings the aerosol backscatter ratio is measured between 20 and 35 km. The seasonal variation of these values is presented here for the first time.

[1]  Wei Yuan,et al.  Mesopause structure from Thermosphere, Ionosphere, Mesosphere, Energetics, and Dynamics (TIMED)/Sounding of the Atmosphere Using Broadband Emission Radiometry (SABER) observations , 2007 .

[2]  R. Lindzen.  Turbulence and stress owing to gravity wave and tidal breakdown , 1981 .

[3]  C. Y. She,et al.  Concept of a two‐level mesopause: Support through new lidar observations , 1998 .

[4]  Andrew J. Gerrard,et al.  Mesosphere inversion layers and stratosphere temperature enhancements , 2004 .

[5]  P. Keckhut,et al.  Temperature trends in the middle atmosphere as seen by historical Russian rocket launches: Part 1, Volgograd (48.68°N, 44.35°E) , 2006 .

[6]  Geraint Vaughan,et al.  Stratospheric aerosol measurements by dual polarisation lidar , 2004 .

[7]  Jeffrey M. Forbes,et al.  Migrating and nonmigrating diurnal tides in the middle and upper atmosphere excited by tropospheric latent heat release , 2002 .

[8]  U. Zahn,et al.  The two-level structure of the mesopause: A model study , 1999 .

[9]  B. T. Marshall,et al.  SABER temperature observations in the summer polar mesosphere and lower thermosphere: Importance of accounting for the CO2ν2 quanta V–V exchange , 2006 .

[10]  R. Garcia.  Dynamics, radiation, and photochemistry in the mesosphere: Implications for the formation of noctilucent clouds , 1989 .

[11]  Alain Hauchecorne,et al.  Climatology and trends of the middle atmospheric temperature (33–87 km) as seen by Rayleigh lidar over the south of France , 1991 .

[12]  M. Rauthe,et al.  Seasonal changes in gravity wave activity measured by lidars at mid-latitudes , 2008 .

[13]  Haonan Chen,et al.  Observed thermal structure of a midlatitude mesopause , 1993 .

[14]  R. Ferrare,et al.  Temperature measurements made with a combined Rayleigh -Mie and Raman lidar. , 1997, Applied optics.

[15]  L. Thomason,et al.  Molecular density retrieval and temperature climatology for 40-60 km from SAGE II , 2003 .

[16]  Philippe Keckhut,et al.  Stratospheric temperature monitoring using a vibrational Raman lidar. Part 1: aerosols and ozone interferences. , 2005, Journal of environmental monitoring : JEM.

[17]  M. Mlynczak,et al.  A detailed evaluation of the heating efficiency in the middle atmosphere , 1993 .

[18]  M. Pitts,et al.  A unified, long‐term, high‐latitude stratospheric aerosol and cloud database using SAM II, SAGE II, and POAM II/III data: Algorithm description, database definition, and climatology , 2003 .

[19]  J. Russell,et al.  Comparison between the temperature measurements by TIMED/SABER and lidar in the midlatitude , 2005 .

[20]  J. Russell,et al.  Stratospheric and mesospheric temperature variations for the quasi-biennial and semiannual (QBO and SAO) oscillations based on measurements from SABER (TIMED) and MLS (UARS) , 2006 .

[21]  J. Röttger,et al.  Temperatures, polar mesosphere summer echoes, and noctilucent clouds over Spitsbergen (78°N) , 2004 .

[22]  Jeffrey M. Forbes,et al.  Migrating and nonmigrating semidiurnal tides in the upper atmosphere excited by tropospheric latent heat release: MIGRATING AND NONMIGRATING SEMIDIURNAL TIDES , 2003 .

[23]  M. A. White,et al.  Lidar observations of seasonal variation of diurnal mean temperature in the mesopause region over Fort Collins, Colorado (41°N, 105°W) , 2000 .

[24]  Josef Höffner,et al.  Lidar temperature measurements of gravity waves over Kühlungsborn (54°N) from 1 to 105 km: A winter‐summer comparison , 2006 .

[25]  D. Drob,et al.  Nrlmsise-00 Empirical Model of the Atmosphere: Statistical Comparisons and Scientific Issues , 2002 .

[26]  Alain Hauchecorne,et al.  Temperature climatology of the middle atmosphere from long‐term lidar measurements at middle and low latitudes , 1998 .

[27]  C. Y. She,et al.  Climatology of a midlatitude mesopause region observed by a lidar at Fort Collins, Colorado (40.6°N, 105°W) , 1995 .

[28]  J. Russell,et al.  Diurnal variations of temperature and winds inferred from TIMED and UARS measurements , 2006 .

[29]  I. Hirota.  Climatology of gravity waves in the middle atmosphere , 1984 .

[30]  M. Gerding,et al.  Simultaneous observation of noctilucent clouds, mesospheric summer echoes, and temperature at a midlatitude station (54°N) , 2007 .

[31]  Alain Hauchecorne,et al.  Vertical structure of the midlatitude temperature from stratosphere to mesopause (30–105 km) , 1995 .

[32]  U. Zahn,et al.  Upper atmosphere potassium layer and its seasonal variations at 54°N , 1998 .

[33]  C. Fricke-Begemann,et al.  Temperature tides and waves near the mesopause from lidar observations at two latitudes , 2005 .

[34]  G. Brasseur,et al.  Energy released by recombination of atomic oxygen and related species at mesopause heights , 1994 .

[35]  T. Wilkerson,et al.  Climatology of Mesospheric Temperature Profiles Observed with the Consortium Rayleigh-ScatterLidar at Logan, Utah , 1997 .

[36]  M. Gerding,et al.  Simultaneous observations of temperatures and ice-particles in the mid-latitude mesopause region , 2007 .

[37]  Josef Höffner,et al.  Mesopause temperature profiling by potassium lidar , 1996 .

[38]  G. Baumgarten,et al.  Polar middle atmosphere temperature climatology from Rayleigh lidar measurements at ALOMAR (69 N) , 2008 .

[39]  J. Friedman,et al.  Nocturnal temperature structure in the mesopause region over the Arecibo Observatory (18.35°N, 66.75°W): Seasonal variations , 2007 .

[40]  Michael Gerding,et al.  Temperature lidar measurements from 1 to 105 km altitude using resonance, Rayleigh, and Rotational Raman scattering , 2004 .

[41]  Franz-Josef Lübken,et al.  Thermal structure of the Arctic summer mesosphere , 1999 .

[42]  F. Lübken,et al.  Potassium lidar temperatures and densities in the mesopause region at Spitsbergen (78°N) , 2007 .

[43]  Tao Yuan,et al.  Climatology of mesopause region temperature, zonal wind, and meridional wind over Fort Collins, Colorado (41°N, 105­°W), and comparison with model simulations , 2008 .

[44]  James M. Russell,et al.  Retrieval of mesospheric and lower thermospheric kinetic temperature from measurements of CO2 15 µm Earth Limb Emission under non‐LTE conditions , 2001 .

[45]  Takuji Nakamura,et al.  Combined temperature lidar for measurements in the troposphere, stratosphere, and mesosphere. , 2004, Applied optics.

[46]  M. Gerding,et al.  Observations of noctilucent clouds and temperature structure from 1-105 km by co-located lidars at 54°N , 2006, SPIE Remote Sensing.

[47]  Jens Wickert,et al.  Climatological validation of stratospheric temperatures in ECMWF operational analyses with CHAMP radio occultation data , 2005 .

[48]  Chester S. Gardner,et al.  Thermal Structure of the Mesopause Region (80–105 km) at 40°N Latitude. Part I: Seasonal Variations , 2000 .

[49]  C. Piccolo,et al.  Validation of the Atmospheric Chemistry Experiment (ACE) version 2.2 temperature using ground-based and space-borne measurements , 2007 .

[50]  J. Holton,et al.  The Role of Gravity Wave Induced Drag and Diffusion in the Momentum Budget of the Mesosphere , 1982 .

[51]  G. Shepherd,et al.  Retrieval and validation of mesospheric temperatures from Wind Imaging Interferometer observations , 2001 .