Research Plan

Daniel B. Weber

October, 1999

Scientific research serves the purpose of extending our understanding of the models used to approximate observed phenomenon. With this premise, my research interests include furthering knowledge in the area of convective initiation, strong winds associated with downslope winds, turbulence in the upper troposphere and lower stratosphere, and improving mesoscale numerical modeling techniques. A list of my current interests include:

  1. Investigate the existence of small, width less than 1km, horizontally oriented near surface tornado like vortices in strong downslope windstorms. A sophisticated three-dimensional numerical model will be applied to simulate airflow over selected mountain profiles.
  2. Type of Grant: NSF, unsolicited

    Status: In preparation

    Duration: 2 years

    Involvement: Principle Investigator (3 months/year)

  3. Clear air turbulence at all levels, but primarily near the cruising altitude of commercial jets (tropopause). This work is an effort to forecast severe turbulence
  4. using numerical model simulations as a guide in recognizing links between model

    generated turbulence and observed features available to the pilots in the cockpit.

    Type of Grant: Private instrument manufacturing company

    Status: Funded (4/99-2/00)

    Duration: 10 months consisting of 2 projects:

    Involvement: Co-Principle Investigator (3/4 time)

    PI- David Jahn, CAPS, University of Oklahoma

    Project Title: Characterization of convective-induced turbulence using storm and environmental parameters: A proof of concept study (and supplemental work program).

  5. Use high-resolution (~25m resolution) simulations to model the initiation and potential periodicity of moist deep convection. Observations indicate that convection, or convective elements, develops periodically in time. This effort will focus on what type of environments produce such behavior. This is a collaborative effort with Dr. Chuck Doswell at the National Severe Storms Laboratory, Norman Ok.
  6. Type of Grant: NSF, unsolicited

    Status: Research in progress (unfunded)

    Duration: Open

    Involvement: Co-Principle Investigator

  7. Develop, implement, and test an adaptive nested grid algorithm for use with numerical weather prediction models on massively parallel computing platforms. This work will focus on structuring an adaptive mesh refinement scheme for optimal performance. The anticipated result is a system that can contain multiple nested grids adapting to follow certain meteorological phenomenon in an efficient manner while taking into consideration the network load between processors and the load on individual processors. This is a collaborative effort with Dr. Henry Neeman at the Center for Analysis and Prediction of Storms at the University of Oklahoma, Norman, Ok.
  8. Type of Grant: NSF, unsolicited

    Status: Submitted, November 1, 1999

    Duration: 3 years

    Involvement: Co-Principle Investigator (3 months/year)

    Additional Personnel: 1 masters level graduate student (2 years, full time)

  9. Soil model physics is an important component of numerical weather prediction. Current tests of the ARPS system reveal inadequacies in the accepted green vegetation fraction database. New satellite data will soon be available that can be used to improve soil moisture evaporation rates. The primary goal of this project is to generate a new dormant vegetation fraction data set and revised the current green vegetation fraction database. Upon the availability of the new data, current soil model schemes will need to be reevaluated and calibrated.
  10. Type of Grant: NSF, unsolicited

    Status: In preparation

    Duration: 3 years

    Involvement: Principle Investigator (6 months/year)

    Additional Personnel: 1 senior level scientist

    1 masters level graduate student (2 years, full time)

     

  11. In the 1990's several heat bursts, a phenomenon associated with decaying thunderstorm activity in Central Oklahoma, have been observed and documented but remain poorly understood. This project will investigate, using a numerical model, three potential mechanisms for generating the characteristic strong winds and excessive temperatures associated with heat bursts.

 

Type of Grant: NSF

Status: In preparation

Duration: 1 year

Involvement: Principle Investigator (6 months)

Additional Personnel: Co-PI (3 months)