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  • METEOROLOGY AND CLIMATOLOGY  (35)
  • AERODYNAMICS  (25)
  • 1980-1984  (57)
  • 1960-1964  (3)
  • 1925-1929
  • 1
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    Doppler radar study of the anvil region associated with a squall line (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A method for analyzing multiple Doppler radar data is briefly described. A feature of this method is a new automated objective unfolding scheme which unfolds Doppler velocities for all the radars simultanceously rather than one radar at a time. The method has been used to study a region of widespread precipitation trailing a squall line (anvil), using tripple Doppler radar data to calculate horizontal winds, divergence, and vertical air velocity over an area 120 km by 120 km by 9 km deep. The method yields vertical profiles of divergence which verify the extended VAD method results of Matejka and Srivastava (1981) for the same anvil, and provides a more detailed picture of the variation of winds, divergence, and vertical air velocity in the anvil behind the squall line.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Conference on Radar Meteorology; Sep 19, 1983 - Sep 23, 1983; Alberta; Canada
    Format: text
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  • 2
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    Numerical simulations of unsteady transonic flow in diffusers (1984)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Previously cited in issue 15, p. 2346, Accession no. A82-31959
    Keywords: AERODYNAMICS
    Type: AIAA Journal (ISSN 0001-1452); 22; 1139-114
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  • 3
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    Remote sensing of stored precipitation, i.e., soil moisture and snow (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The characteristics and performance of spaceborne precipitation radar systems are discussed. The development of a model is discussed. Examples of simulation results are given. It was found that the accuracy of rain rate estimates is improved by using higher resolution radar.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Precipitation Meas. from Space:; 9 p
    Format: text
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  • 4
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    The geologic record of climatic change (1983)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Major results from paleoclimatic investigations are investigated, and background material is included. The time interval surveyed extends from the formation of the earth 4.6 billion years ago to the development of the instrumental record. Previously announced in STAR as N82-33946
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Reviews of Geophysics and Space Physics (ISSN 0034-6853); 21; May 1983
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  • 5
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    Satellite and correlative measurements of the stratospheric aerosol. II Comparison of measurements made by SAM II, dustsondes and airborne lidar (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Results are shown from the first set of measurements conducted to validate extinction data from the Stratospheric Aerosol Measurement II (SAM II). Dustsonde-measured number density profiles and lidar-measured backscattering profiles for two days are converted to extinction profiles, and are shown to agree within their respective uncertainties at all heights above the tropopause. Near the tropopause, agreement depends on use of model size distributions with larger particles, having radii greater than 0.6 microns. The presence of such large particles is supported by measurements made elsewhere, is suggested by the in situ size distribution measurements reported, and is likely to have an important bearing on the radiative impact of the total stratospheric aerosol. It is concluded that the SAM II extinction data and uncertainty estimates are supported.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of the Atmospheric Sciences; 38; June 198
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  • 6
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    On the interaction of surface heating anomalies with zonally symmetric and asymmetric atmospheric flows (1982)
    In:  Other Sources
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    Publication Date: 2011-08-18
    Description: Models of intermediate complexity have been used to study some aspects of the climatic effects of anomalous heating, but many aspects of the problem have yet to be explored thoroughly. The present study represents a preliminary investigated of the gaps in scientific understanding of the interaction of heating and atmospheric dynamics. The principle research tool is a model of intermediate complexity, including a time-dependent, nonlinear-two-layer quasi-geostrophic model of relatively high horizontal resolution which incorporates simple heating parameterizations. The model is used to examine systematically the interaction of heating arising from anomalies in surface temperature with zonally symmetric and zonally asymmetric flows characterized by different values of static stability and mean vertical wind shear.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of the Atmospheric Sciences; 39; Sept
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  • 7
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    The seasonal response of the Held-Suarez climate model to prescribed ocean temperature anomalies. II - Dynamical analysis (1984)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The heating associated with equatorial, subtropical, and midlatitude ocean temperature anamolies in the Held-Suarez climate model is analyzed. The local and downstream response to the anomalies is analyzed, first by examining the seasonal variation in heating associated with each ocean temperature anomaly, and then by combining knowledge of the heating with linear dynamical theory in order to develop a more comprehensive explanation of the seasonal variation in local and downstream atmospheric response to each anomaly. The extent to which the linear theory of propagating waves can assist the interpretation of the remote cross-latitudinal response of the model to the ocean temperature anomalies is considered. Alternative hypotheses that attempt to avoid the contradictions inherent in a strict application of linear theory are investigated, and the impact of sampling errors on the assessment of statistical significance is also examined.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of the Atmospheric Sciences (ISSN 0022-4928); 41; 2918-293
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  • 8
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    The seasonal response of the Held-Suarez climate model to prescribed ocean temperature anomalies. I - Results of decadal integrations (1984)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Anomalies in ocean surface temperature have been identified as possible causes of variations in the climate of particular seasons or as a source of interannual climatic variability, and attempts have been made to forecast seasonal climate by using ocean temperatures as predictor variables. However, the seasonal atmospheric response to ocean temperature anomalies has not yet been systematically investigated with nonlinear models. The present investigation is concerned with ten-year integrations involving a model of intermediate complexity, the Held-Suarez climate model. The calculations have been performed to investigate the changes in seasonal climate which result from a fixed anomaly imposed on a seasonally varying, global ocean temperature field. Part I of the paper provides a report on the results of these decadal integrations. Attention is given to model properties, the experimental design, and the anomaly experiments.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of the Atmospheric Sciences (ISSN 0022-4928); 41; 2605-261
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  • 9
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    Pressure distributions on a flat-plate delta wing swept 65 deg at a Mach number of 5.97 at angles of attack from 65 deg to 115 deg and angles of roll from 0 deg to 25 deg at a 90 deg angle of attack (1962)
    In:  CASI
    Details
    Publication Date: 2019-05-30
    Description: Pressure distributions on flat plate delta wing swept 65 deg at hypersonic speeds at angles of attack from 65 deg to 115 deg and angles of roll from 0 deg to 25 deg at 90 deg angle of attack
    Keywords: AERODYNAMICS
    Type: NASA-TM-X-702
    Format: application/pdf
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  • 10
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    Experimental studies of the boundary layer on an airfoil at low Reynolds numbers (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: An experimental wind tunnel investigation was carried out to study the effect of laminar separation bubbles on a NACA 66(3)-018 airfoil for Reynolds numbers less than 4.0 x 10 to the 5th. Leading edge laminar separation bubbles formed for angles of attack of approximately 7 to 12 deg. To study the leading edge separation bubble more closely, hotwire anemometer measurements were made in the airfoil a Reynolds number of 8.0 x 10 to the 4th. Velocity and turbulence intensity profiles were obtained and boundary layer parameters were calculated. Frequency spectra were also calculated at key points in the airfoil boundary layer for this case. Correlation of the anemometry data with static pressure distributions, and flow visualization data provided insight into laminar separation bubble behavior at low Reynolds numbers.
    Keywords: AERODYNAMICS
    Type: AIAA PAPER 83-1671
    Format: text
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