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  • 1
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    Report of convective phenomena team (1980)
    In:  CASI
    Details
    Publication Date: 2006-01-16
    Description: A group meeting was assembled to focus on the planning of specific experiments, to establish some priorities, identify interested scientists who would like to participate, establish any special requirements, make recommendations on data processing, and to prepare flight plan outlines. Since the number of convective storms in the CCOPE (Cooperative Convective Precipitation Experiment) field experiment area are limited to only a few days during the operational time period the flight plans must be designed with a hierarchy of abort experiments so that the easily identified and lowest probability events should take priority until their quota is filled.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: First Sci. Working Group Meeting of Airborne Doppler Lidar Wind Velocity Meas. Program; 10 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    The area-time-integral technique to estimate convective rain volumes over areas applied to satellite data - A preliminary investigation (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    An attempt to extend the ATI technique to estimate convective rain volumes using satellite data (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Digital satellite and radar data of a thunderstorm event that occurred on June 12, 1981 are examined. The processing of both data sets is described. Cumulative area versus count values, and threshold count values for IR and visible satellite data for 13 consecutive time steps are analyzed. The IR and visible satellite images are compared. The relation between radar reflectivity, temperature, and echo height is studied.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Rain Volume Estimation over Areas Using Satellite and Radar Data (1984)
    In:  CASI
    Details
    Publication Date: 2014-09-17
    Description: The application of satellite data to a recently developed radar technique used to estimate convective rain volumes over areas on a dry environment (the northern Great Plains) is discussed. The area time integral technique (ATI) provides a means of estimating total rain volumes over fixed and floating target areas of the order of 1,000 to 100,000 km(2) for clusters lasting 40 min. The basis of the method is the existence of a strong correlation between the area coverage integrated over the lifetime of the storm (ATI) and the rain volume. One key element in this technique is that it does not require the consideration of the structure of the radar intensities inside the area coverage to generate rain volumes, but only considers the rain event per se. This fact might reduce or eliminate some sources of error in applying the technique to satellite data. The second key element is that the ATI once determined can be converted to total rain volume by using a constant factor (average rain rate) for a given locale.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA. Goddard Space Flight Center Global Scale Atmospheric Processes Res. Program Review; p 203-209
    Format: text
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  • 5
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    User's guide for SBUV/TOMS ozone derivative products (1984)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A series of products are available derived from the total-ozone and ozone vertical profile results for the Solar Backscattered Ultraviolet/Total-Ozone Mapping Spectrometer (SBUV/TOMS) Nimbus-7 operation. Products available are (1) orbital height-latitude cross sections of the SBUV profile data, (2) daily global total ozone contours in polar coordinates, (3) daily averages of total ozone in global 5x5 degree latitude-longitude grid, (4) daily, monthly and quarterly averages of total ozone and profile data in 10 degree latitude zones, (5) tabular presentation of zonal means, (6) daily global total ozone and profile contours in polar coordinates. The ""Derivative Products User's Guide'' describes each of these products in detail, including their derivation and presentation format. Information is provided on how to order the tapes and microfilm from the National Space Science Data Center.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-RP-1116 , NAS 1.61:1116
    Format: application/pdf
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  • 6
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    Convective rain rates and their evolution during storms in a semiarid climate (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The semiarid climate of the U.S. northern High Plains region has been studied with respect to rain rates and their evolution during summertime convective storms, using radar data from a total of 750 radar echo clusters. Analysis of this data suggests that the average rain rate R among storms is in a first approximation independent of the total rain volume, if the entire storm duration is considered in the averaging process. R primarily depends on the reflectivity threshold considered in calculating the area coverage integrated over the lifetime of the storm. R evolution during storms is analyzed by dividing each storm lifetime into 10 min, 1, 2, and 4 hours, as well as growing and decaying periods. The value of R remained independent of the total rain volume when the growing or decaying periods of storms were considered separately.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Monthly Weather Review (ISSN 0027-0644); 112; 1602-161
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Observations of oceanic surface-wind fields from the Nimbus-7 microwave radiometer (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Brightness temperatures from the five-frequency dual-polarized scanning multichannel microwave radiometer (SMMR) on Nimbus 7 have been used to obtain surface wind fields over the ocean. The satellite-derived wind field for 1200Z, Feb. 19, 1979, in the eastern North Pacific has been compared with an operationally generated surface-wind analysis field. Previous point comparisons at selected locations have indicated that satellite winds are accurate to 3 m/sec. The results, although of a preliminary nature, indicate that SMMR-derived winds may be used to determine large-scale wind fields over the ocean, particularly in areas of strong wind gradients such as found in cyclonic systems.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: IEEE Transactions on Geoscience and Remote Sensing; GE-20; Oct. 198
    Format: text
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