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DTIC ADA323188: Development and Implementation of an Isentropic Pot... |
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by Defense Technical Information Center |
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This thesis presents and validates methods for |
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calculating isentropic potential vorticity (IPV) and |
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applies these methods in software programs planned for |
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implementation at the Air Force Global Weather Center |
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(AFGWC). The IPV programs will provide Air Force Weather |
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forecasters additional tools to diagnose atmospheric |
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kinematics and understand atmospheric dynamics. A FORTRAN |
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program is recommended using mandatory-level isobaric |
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data projected to be available on AFGWC computer systems, |
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specifically, from the Navy Operational Global Atmosphere |
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Prediction System and Medium Range Forecast models. |
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Program development and analysis consists of three main |
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steps: (1) data retrieval; (2) IPV calculations; and, (3) |
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interpolation to an isentropic vertical coordinate |
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system. This thesis recommends performing IPV |
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calculations at constant pressure for comparison with |
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other mandatory-level isobaric parameters, or in routine |
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cross-sectional analysis. Additionally, a recommendation |
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is made to calculate IPV at constant potential |
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temperature from interpolated isentropic state variables |
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instead of interpolating isobaric IPV fields. |
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Applications of the developed programs include |
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visualization of synoptic-scale motions an alternative |
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method of locating the tropopause in cross-sectional |
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analysis. This thesis is a significant effort to move |
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toward operational use of isentropic analysis and the |
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incorporation of IPV analysis into forecasting techniques |
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at AFGWC. |
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Date Published: 2018-04-05 05:04:57 |
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Identifier: DTIC_ADA323188 |
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Item Size: 74939479 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Desjardins, Jr, Jay B ;... |
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# Uploaded by |
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@chris85 |
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