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  • METEOROLOGY AND CLIMATOLOGY  (252)
  • 1975-1979  (252)
  • 1977  (252)
  • 1
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    Cloud laboratory in space to study earth weather (1977)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-NEWS-RELEASE-77-197 , P77-10195
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Federal meteorological handbook no. 10: Meteorological rocket observations (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-08-27
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-TM-74739 , FMH-10
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Statement of Dr. Alan M. Lovelace, Acting Administrator, National Aeronautics and Space Administration (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-08-27
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Comm. on Commerce, Sci. and Transportation Natl. Climate Program Act; p 122-131
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Some principles for studying reduced visibility conditions in regions around airports (1977)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: A set of guidelines based on the experiences of the meteorological team at Tashkent airport is presented. These guidelines pertain to all the possible immediate and specific sources of relevant information in the vicinity of a given airport and to the combination of theoretical and experimental information which should be used in evaluating the data.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-TM-75152
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Third National Aeronautics and Space Administration Weather and climate program science review (1977)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Research results of developing experimental and prototype operational systems, sensors, and space facilities for monitoring, and understanding the atmosphere are reported. Major aspects include: (1) detection, monitoring, and prediction of severe storms; (2) improvement of global forecasting; and (3) monitoring and prediction of climate change.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-CP-2029 , Nov 29, 1977 - Nov 30, 1977; Greenbelt, MD; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Data simulation studies for field programs, satellite system tests, and regional weather prediction (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: In the present paper, the status of the Drexel/NCAR regional numerical weather forecast system is summarized to show the extent of our experience and our immediate requirements for data within the United States on scales smaller than rawinsonde spacing (approximately 300 km). Preliminary experiments are described, and data assimilation problems are examined. It is shown that data requirements, assimilation methods, and forecast sensitivity differ for regional and large-scale models. Forecast verification statistics suggest that middle-troposphere temperature is well known but relative humidity is not. In some cases, regional forecasts require much better humidity data than available from rawinsondes. Numerics, lateral boundary conditions, model physics, and computing power are adequate for near real-time experimental regional prediction with horizontal mesh sizes down to 35 km. Subsynoptic data and assimilation are the primary challenges facing regional NWP.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Conference on Numerical Weather Prediction; Apr 26, 1977 - Apr 28, 1977; Omaha, NE
    Format: text
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  • 7
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    Severe weather prediction studies (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A numerical forecast model is described which uses three-dimensional primitive equations to predict the evolution of the wind, temperature and moisture fields along with the subsynoptic-scale convective activity. There are 15 vertical levels set on a longitude-latitude horizontal grid. In this study, the horizontal grid distance is 70 km (0.625 deg latitude and 0.816 deg longitude at 40 deg N) and the time step is 90 sec. Orography is included and terrain coordinates are adopted. The forecast model is used to test two tornado-producing storms with very different synoptic structures. A 12 hr forecast is carried out for both cases. The rms errors of the forecast indicate much smaller errors in the middle troposphere than in the lower troposphere. The results demonstrate that a rather fine-mesh limited-area numerical model is capable of providing a valuable short-range forecast of the circulation and the mesoscale precipitation features.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Conference on Numerical Weather Prediction; Apr 26, 1977 - Apr 28, 1977; Omaha, NE
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    The impact of satellite soundings upon the NMC analysis and forecast system (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The importance of satellite-derived soundings on National Meteorological Center weather analysis and forecast was studied by comparing summertime DST (Aug. 18-Sept. 4, 1975) forecasts generated by analyses with and without both the operational VTPR soundings from NOAA-4 and the experimental soundings derived from the infrared and microwave instruments aboard Nimbus-6. Objective and subjective procedures, including evaluation of standard skill scores and judgment by skilled synopticians, was used to evaluate the importance of satellite data. The investigation shows that satellite data do not aid numerical weather prediction in the Northern Hemisphere.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Conference on Numerical Weather Prediction; Apr 26, 1977 - Apr 28, 1977; Omaha, NE
    Format: text
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  • 9
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    The effect of increased horizontal resolution on synoptic forecasts with the GISS model of the global atmosphere (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The improved horizontal resolution global circulation model in question has a horizontal spacing of 2.5 deg latitude by 3 deg longitude for a resolution of about 250 km in midlatitude. This paper reports on experiments to determine the improvements in forecasting skill and in initial conditions that were made possible by the ultrafine resolution and ultrafine assimilation. The size of the improvement in skill score when the ultrafine model is used for forecasting and assimilation was so large that 60-hour forecasts with the ultrafine model had as good a skill score as the 48-hour forecasts with the fine model. Synoptic evaluations confirmed that ultrafine model forecasts are better than the fine model forecasts.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Conference on Numerical Weather Prediction; Apr 26, 1977 - Apr 28, 1977; Omaha, NE
    Format: text
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  • 10
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    Dust storms - Great Plains, Africa, and Mars (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Dust storms in the Great Plains of North America and in the Sahara Desert are analyzed on the basis of imagery from the geostationary Synchronous Meteorological Satellite. The onset time, location and areal extent of the dust storms are studied. Over land surfaces, contrast enhancement techniques are needed to obtain an adequate picture of dust storm development. In addition, infrared imagery may provide a means of monitoring the strong horizontal temperature gradients characteristic of dust cloud boundaries. Analogies between terrestrial dust storms and the airborne rivers of dust created by major Martian dust storms are also drawn.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Conference on Severe Local Storms; Oct 18, 1977 - Oct 21, 1977; Omaha, NE
    Format: text
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