A Comparison Between Nimbus 5 THIR and ITPR Temperatures and Derived Winds with Rawinsonde Data Obtained in the AVE II Experiment PDF Download
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Author: James E. Arnold
Publisher:
ISBN:
Category : Atmosphere, Upper
Languages : en
Pages : 88
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Book Description
Author: James E. Arnold
Publisher:
ISBN:
Category : Atmosphere, Upper
Languages : en
Pages : 88
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Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 88
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Author: James R. Scoggins
Publisher:
ISBN:
Category :
Languages : en
Pages : 86
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Book Description
This report addresses the question regarding the extent to which satellite sounding data can be used to determine atmospheric structure. Comparisons are made between rawinsonde and satellite profiles in seven areas for a wide range of surface and weather conditions. Variables considered consist of temperature, dewpoint temperature, thickness, precipitable water, lapse rate of temperature, stability, geopotential height, mixing ratio, wind direction, wind speed, and kinematic parameters, including vorticity and the advection of vorticity and temperature. In addition, comparisons are made in the form of cross sections and synoptic fields for selected variables. Sounding data from the NIMBUS-6 and TIROS-N satellites were used. The NIMBUS-6 data were linearly interpolated to obtain soundings coincident in time with the rawinsonde soundings. The TIROS-N data were obtained concurrently with the rawinsonde data, and no interpolation was performed. Results from the analysis of the discrepancies between satellite and rawinsonde data were similar for both types of satellite data. Biases were observed in both sets of satellite data as a function of altitude, and the discrepancies were approximately randomly distributed in the 1000-500, 500-300, and 300-100 mb layers. Geostrophic wind computed from smoothed geopotential heights provided large-scale flow patterns that agreed well with the rawinsonde wind fields. Surface wind patterns as well as magnitudes computed by use of the log law to extrapolate wind to a heighth of 10 m agreed well with observations. (Author).
Author:
Publisher:
ISBN:
Category : Astronautics in meteorology
Languages : en
Pages : 90
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 276
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1092
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Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Author: William E. Carle
Publisher:
ISBN:
Category :
Languages : en
Pages : 88
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Book Description
Objective methods of computing upper-level and surface wind fields from Nimbus-6 satellite sounding data are developed. These methods are evaluated by comparing satellite-derived and rawinsonde wind fields on gridded constant-pressure charts in four geographical regions. Satellite-derived and hourly observed surface wind fields are compared. Results indicate that the best satellite-derived wind on constant-pressure charts is a geostrophic wind derived from highly smoothed fields of geopotential height. Satellite-derived winds computed in this manner and rawinsonde winds show similar circulation patterns except in areas of small height gradients. Magnitudes of the standard deviation of the differences between satellite-derived and rawinsonde wind speeds range from approximately 3 to 12 m/s on constant-pressure charts and peak at the jet-stream level. Fields of satellite-derived surface wind computed with the logarithmic wind law agree well with fields of observed surface wind in most regions. Magnitudes of the standard deviation of the difference in surface wind speed range from approximately 2 to 4 m/s, and satellite-derived surface winds are able to depict flow across a cold front and around a low-pressure center.
Author:
Publisher:
ISBN:
Category : Electronic journals
Languages : en
Pages : 872
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Author:
Publisher:
ISBN:
Category : Aeronautics in meteorology
Languages : en
Pages : 386
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Author:
Publisher:
ISBN:
Category : Numerical weather forecasting
Languages : en
Pages : 260
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