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NASA Technical Reports Server (NTRS) 19720022692: Improvement of sy... |
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by NASA Technical Reports Server (NTRS) |
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The Nimbus 4 temperature-humidity infrared radiometer |
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(THIR) monitors radiation in the 6.5 to 7.2 micron water |
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vapor absorption with a 23 kilometer spatial resolution |
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at the sub-satellite point. Radiation monitored in this |
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spectral region results primarily from emission in the |
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250 to 500 millibar region of the upper troposphere. The |
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THIR 6.7 micron observations are readily available in |
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photofacsimile imagery form which shows very distinctive |
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patterns associated with spatial variations in |
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atmospheric water vapor. These radiometric observations |
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were combined in several instances with moisture values |
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measured in the upper troposphere by the standard |
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radiosonde network. In each instance, the result is a |
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much more consistent analysis showing increased spatial |
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detail that agrees with the radiometric observations and |
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does not compromise the conventional data. The improved |
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moisture analyses show relatively dry and moist tongues |
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that are very difficult or impossible to infer from the |
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conventional data alone. The patterns in the moisture |
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fields can be tracked over 12 and 24 hour periods. In |
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addition, by keeping in mind the advective properties of |
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the moisture field, success was achieved in improving |
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streamline analyses at the 400 mb level over data sparse |
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regions on a global scale. |
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Date Published: 2016-07-09 04:54:31 |
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Identifier: NASA_NTRS_Archive_19720022692 |
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Item Size: 14854020 |
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Language: english |
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Media Type: texts |
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