Journal of Atmospheric and Oceanic Technology: Recent submissions

Now showing items 881-900 of 5084

    • A Spectral Simple Adjoint Method for Retrieving Low-Altitude Winds from Single-Doppler Data 

      Qiu, Chong-Jian; Xu, Qin (American Meteorological Society, 1994)
      A spectral simple adjoint (SSA) method for retrieving, low-attitude time-mean horizontal winds from single-Doppler wind measurements is developed and tested with the Phoenix II held experimental data. The SSA method is ...

    • QVAD: A Method to Obtain Quadratic Winds from Conical Scans by a Doppler Weather Radar Network 

      Scialom, G.; Lemaître, Y. (American Meteorological Society, 1994)
      Recently, the (effective or projected) development of radar networks devoted to short-term forecasting has considerably emphasized the need for new forecasting methods using single- or multiple-radar data that are easy to ...

    • Liquid Nitrogen-Cooled Fourier Transform Spectrometer System for Measuring Atmospheric Emission at High Altitudes 

      Murcray, Frank H.; Murcray, Frank J.; Murcray, David G.; Pritchard, James; Vanasse, George; Sakai, Hajime (American Meteorological Society, 1984)
      A cryogenically cooled FTS system capable of a spectral resolution of 0.06 cm?1 is described. The entire interferometer is operated at LN2 temperature with the exception of the Ge:Cu detector, which is cooled to below 10 ...

    • A First-Guess Feature-Based Algorithm for Estimating Wind Speed in Clear-Air Doppler Radar Spectra 

      Clothiaux, E. E.; Penc, R. S.; Thomson, D. W.; Ackerman, T. P.; Williams, S. R. (American Meteorological Society, 1994)
      Algorithms for deriving winds from profiler range-gated spectra currently rely on consensus averaging to remove outliers from the subhourly velocity estimates. For persistent ground clutter in the echo return that is ...

    • Comparison of Raindrop Size Distribution Measurements by a Joss-Waldvogel Disdrometer, a PMS 2DG Spectrometer, and a POSS Doppler Radar 

      Sheppard, B. E.; Joe, P. I. (American Meteorological Society, 1994)
      Three techniques for the measurement of raindrop size distributions are compared using data from a Joss-Waldvogel disdrometer (JWD), a Particle Measuring Systems 2DG spectrometer (PMS), and an Atmospheric Environment Service ...

    • Behavior of an Inversion-Based precipitation Retrieval Algorithm with High-Resolution AMPR Measurements Including a Low-Frequency 10.7-GHz Channel 

      Smith, E. A.; Xiang, X.; Mugnai, A.; Hood, R. E.; Spencer, R. W. (American Meteorological Society, 1994)
      A microwave-based, profile-type precipitation retrieval algorithm has been used to analyze high-resolution passive microwave measurements over an ocean background, obtained by the Advanced Microwave Precipitation ...

    • High-Resolution Imaging of Rain Systems with the Advanced Microwave Precipitation Radiometer 

      Spencer, Roy W.; Hood, Robbie E.; Lafontaine, Frank J.; Smith, Eric A.; Platt, Robert; Galliano, Joe; Griffin, Vanessa L.; Lobl, Elena (American Meteorological Society, 1994)
      An Advanced Microwave Precipitation Radiometer (AMPR) has been developed and flown in the NASA ER-2 high-altitude aircraft for imaging various atmospheric and surface processes, primarily the internal structure of rain ...

    • Corrigendum 

      Unknown author (American Meteorological Society, 1994)
      Correction to Volume 9, Issue 5, pages 705-708.

    • Errors in Radio Acoustic Sounding of Temperature 

      Angevine, Wayne M.; Ecklund, W. L. (American Meteorological Society, 1994)
      With the use of simultaneous correction for radial wind, the accuracy of radio acoustic sounding systems for the measurement of temperature has been substantially improved. The temperature accuracy can now be affected by ...

    • Digital Signal Processing to Enhance Oceanographic Observations 

      Mudge, Todd D.; Lueck, Rolf G. (American Meteorological Society, 1994)
      Quantization noise, the difference between a continuous physical signal and its discrete integer approximation, is an unavoidable consequence of data sampling. The problem is particularly acute for oceanographic data because ...

    • A Comparison of Techniques for Referencing Geostrophic Velocities 

      Pickart, Robert S.; Lindstrom, Scott S. (American Meteorological Society, 1994)
      A geostrophic velocity section across the Gulf Stream and deep western boundary current near 35°N is referenced four different ways: using a POGO float (acoustically tracked transport float), shipboard acoustic Doppler ...

    • TASITA—Towed Air–Sea interface Temperature Analyzer 

      Cechet, R. P.; Bennett, J.; Helmond, I.; Coppin, P. A.; Bradley, E. F.; Bapton, I. J.; Godfrey, J. S. (American Meteorological Society, 1994)
      An accurate platinum RTD-based (resistive temperature device) system has been developed to measure the vertical temperature profile in the region of the atmosphere-ocean interface. TASITA, the towed air?sea interaction ...

    • The Validation of ATSR Using Aircraft Radiometer Data over the Tropical Atlantic 

      Smith, A. H.; Saunders, R. W.; Závody, A. M. (American Meteorological Society, 1994)
      The First ATSR Tropical Experiment was carded out in November 1991 over the tropical Atlantic to validate daytime measurements of sea surface temperature (SST) made by the Along Track Scanning Radiometer (ATSR) on the ...

    • Measurement of Individual Hydrometeor Absorption Cross Sections Utilizing Microwave Cavity Perturbation Techniques 

      Hansman, Robert John (American Meteorological Society, 1984)
      A technique for measurement of individual hydrometeor absorption cross sections is presented. Cross sections are inferred by inserting the hydrometeor into a high Q resonant cavity and measuring the Q perturbation. Tests ...

    • ECMWF and SSM/I Global Surface Wind Speeds 

      Halpern, David; Hollingsworth, Anthony; Wentz, Frank (American Meteorological Society, 1994)
      Monthly mean 2.5° ? 2.5° resolution 10-m-height wind speeds from the Special Sensor Microwavelimager (SSM/I) instrument and the European Centre for Medium-Range Weather Forecasts (ECMWF) forecast-analysis system are compared ...

    • Airborne C02 Coherent Lidar Measurements of Cloud Backscatter and Opacity over the Ocean Surface 

      Menzies, Robert T.; Tratt, David M.; Flamant, Pierre H. (American Meteorological Society, 1994)
      The use of an airborne C02 lidar to obtain cloud backscatter and extinction data at a thermal infrared wavelength is described. The extinction in this spectral region is proportional to the cloud liquid water content. The ...

    • Acoustic Tomographic Monitoring of the Atmospheric Surface Layer 

      Keith Wilson, D.; Thomson, Dennis W. (American Meteorological Society, 1994)
      Acoustic tomography is proposed as a method for monitoring near-surface atmospheric temperature and wind velocity fields. Basic issues relating to the feasibility and implementation of atmospheric tomography are discussed. ...

    • Application of Airborne Field Mill Data for Use in Launch Support 

      Harris-Hobbs, Ray; Giori, Kathy; Bellmore, Michael; Lunsford, Arleen (American Meteorological Society, 1994)
      An airborne field mill (ABFM) system was implemented on a Learjet 36A and was used to collect electric-field and microphysical data for summertime convective clouds new Cape Canaveral and the Kennedy Space Center. This ...

    • ARMAR: An Airborne Rain-Mapping Radar 

      Durden, S. L.; Im, E.; Li, F. K.; Ricketts, W.; Tanner, A.; Wilson, W. (American Meteorological Society, 1994)
      A new airborne rain-mapping radar (ARMAR) has been developed by NASA and the Jet Propulsion Laboratory for operation on the NASA Ames DC-8 aircraft. The radar operates at 13.8 GHz, the frequency to be used by the radar on ...

    • Measurement of Cloud Droplet Size Spectra by Doppler Radar 

      Gossard, Earl E. (American Meteorological Society, 1994)
      A new technique is examined for using Doppler radars to extract information about the size spectrum of cloud droplets too small to have terminal velocities large enough to be resolvable by the radar. If the drops are very ...