Recovery of three-dimensional wind and temperature fields from simulated single-doppler radar data

A method for recovering the full three-dimensional wind and temperature fields from single-Doppler radar data is developed and demonstrated. This method uses a dynamic model, and attempts to determine the initial conditions of the unobserved flow and thermodynamic fields that have generated the time sequence of observed fields. A cost function is defined to measure the difference between the model solutions of the observed variables and the observations. A set of adjoint equations is constructed to determine the sensitivity of the cost function to initial state errors in those not observed. The initial state variables are then adjusted to minimize those errors. Several experiments are conducted using simulated observations produced by a control run of a dry convection model. It is shown that the method is able to determine the spatial structures of the unobserved velocity components and temperature effectively; and the performance is enhanced by the use of a temporal smoothness constraint. The method is not sensitive to moderate amplitude random observational errors.

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Copyright 1991 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 of the U.S. Copyright Act or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statement, requires written permission or a license form the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (http://www.ametsoc.org/AMS) or from the AMS at 617-227-2425 or copyright@ametsoc.org.


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Author Sun, Juanzhen
Flicker, D.
Lilly, D.
Publisher UCAR/NCAR - Library
Publication Date 1991-03-01T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Topic Category geoscientificInformation
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Metadata Date 2025-07-17T17:58:49.534297
Metadata Record Identifier edu.ucar.opensky::articles:3307
Metadata Language eng; USA
Suggested Citation Sun, Juanzhen, Flicker, D., Lilly, D.. (1991). Recovery of three-dimensional wind and temperature fields from simulated single-doppler radar data. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d72j6bpn. Accessed 05 August 2025.

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