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Experiments

The links below lead to the graphical products generated from various research experiments performed using NOAA's HWRF modeling system. The experiments are divided into two categories: retrospective and real-time.

Retrospective experiments correspond to large sets of forecasts performed generally off-season (i.e., not during an active hurricane season) with the purpose of evaluating the quality of individual improvements made to NOAA's HWRF model (i.e., improvements to a physical parameterization or initialization procedure, changes to model resolution or grid size, etc...). Retrospective experiments are performed with the goal of elucidating how the gradual modifications made to the model impact its overall performence.

Real-time experiments corresponds to those performed in lieu of NOAA's Hurricane Forecast Improvement Project's (HFIP) annual HFIP Demonstration (HFIP-Demo) event. During HFIP-Demo, NOAA's HWRF model, as well as other various research models, are run in real-time during the active hurricane season to provide track, structure, and intensity forecasts of tropical storms around the globe. One or more versions of NOAA's HWRF are run during HFIP-Demo. These model versions contain only substantial and verified improvements (i.e., those verified through one or more restrospective experiments) and correspond to a 1-year long period of dilligent model R&D efforts.

A variety of graphical products are provided for each forecast. These products are generally divided into storm-scale products (i.e., storm-centered or zoomed into a specific storm region) and large-scale products (i.e., depicting the conditions of a large portion of the environment surrounding a storm). Some of the available products are "spaghetti plots" of forecasted and observed storm track and intensity, including NOAA's HWRF and other various operational and research models, animations of various 2D prognostic and dignostic model fields, domain averaged time-vs-height profiles of various prognostic and dignostic model fields, simulated satellite products, and time-series plots of SHIPS model equivalent predictors.


List of Real-Time HWRF Experiments
  1. HWRF HFIP-Demo 2008-2012
    Real-time forecasts of various research configurations of NOAA's HWRF model that were performed under Streams 1.5 and 2.0 of HFIP's annual HFIP-Demo events. Storms from the 2008-2012 hurricane seasons are covered. Forecasts were performed using NOAA's Jet supercomputer located in Boulder, CO.

  2. HWRF West-Pac HFIP-Demo 2012 (password required)
    Real-time forecasts of NOAA's HWRF model that were performed for West-Pacific storms during the 2012 hurricane season. The experiment was performed under Stream 2.0 of HFIP's annual HFIP-Demo events. The simulations were run using NOAA's Jet supercomputer located in Boulder, CO.

  3. Basin-scale HWRF HFIP-Demo 2012
    Real-time forecasts of NOAA's Basin-scale HWRF model that were performed under Stream 2.0 of HFIP's annual HFIP-Demo events. The Basin-scale HWRF model is the latest development emerging from the research partnership between the AOML/HRD Numerical Modeling Group and NOAA's Environmental Modeling Center (EMC). The Basin-scale HWRF model is configured with a 27:09:03km-resolution and its large-scale domain extends from Eastern Europe to the Central Pacific. For any given forecast cycle, the Basin-scale HWRF model "spawns" multiple pairs of 09:03km-resolution movable meshes that track storms in both the Atlantic and East-Pacific basins. This allows each simulation to better capture the interactions between multiple storms using high-resolution. The Basin-scale HWRF model was run for the first time during the 2012 hurricane season, thus, only storms for that season are currently covered.

List of Retrospective HWRF Experiments
  1. 2012 Operational HWRF Pre-Implementation
    Retrospective forecasts of the pre-operational implementation version of the 2012 NOAA's HWRF (version 2012-02-23). A total of 123 forecasts are available for the entire life-cycles of four major storms from the 2009, 2010, and 2011 hurricane seasons.

  2. HWRF HFIP-Demo 2011 Stream 1.5 Retrospective
    Retrospective forecasts of the research version of NOAA's HWRF model that was subsequently run under Stream 1.5 of HFIP's 2011 HFIP-Demo event. A total of 1035 forecasts are available for the entire life-cycles of 48 storms from the 2008, 2009, and 2010 hurricane seasons.
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