Table of Contents:
- <p class="MsoNormal">This dataset consists of WRF model outputs from data assimilation experiments conducted by National Center for Atmospheric Research (NCAR) and The Ohio State University (OSU), incorporating additional radiosonde observations from the Year of Polar Prediction Southern Hemisphere Winter Special Observing Period (SOP) for the Southern Ocean and Antarctica.</p> <p class="MsoNormal">A data sample corresponding to Targeted Observing Period 7 (TOP7) is provided for the forecast initialized on August 20, 2022 at 0000 UTC, for domain 1 (d01), with output available at 3-hour intervals over a 5-day forecast period. The variables provided in this dataset are available at the 500 hPa pressure level and include geopotential height(m), temperature(K), meridional wind(m/s), zonal wind(m/s), and water vapor mixing ratio(kg/kg).</p> <p class="MsoNormal"> </p> <p class="MsoNormal">Included files:</p> <div class="MsoNormal"> <div class="MsoNormal"> <p class="MsoNormal">· TOP7_MRI4DVAR.zip<br>Contains sample forecast performed using 4D-Var data assimilation (MRI-4DVAR: Multi-Resolution Incremental 4DVAR).</p> <p class="MsoNormal">· TOP7_3DEnVar.zip<br>Contains sample forecast performed using Ensemble-variational data assimilation (3DEnVar: Three-Dimensional Ensemble-Variational method).</p> <p class="MsoNormal"> </p> </div> <p class="MsoNormal">Experiment Configuration</p> <p class="MsoNormal">Two different observational configurations were applied:</p> <ul> <li class="MsoNormal">Routine (ROUTINE/)<br>Simulations assimilating only conventional (routine) observations.</li> <li class="MsoNormal">Extra (EXTRA/)<br>Simulations including additional radiosonde observations collected during the YOPP-SH winter Special Observing Period (SOP).</li> </ul> <div class="MsoNormal"> </div> <p class="MsoNormal"> File naming convention:<br>wrfout_d0X_500hPa_<time>.nc<br><br>Where:<br>- d0X = model domain (e.g., d01)<br>- variables = t: temperature, z: geopotential height, u/v: wind components of rotated to Earth coordinates, QVAPOR: mixing ratio, XLAT: latitude, XLONG: longitude<br>- time = 2022_MM-DD_TT:00:00</p> <p class="MsoNormal"> </p> </div> <p class="MsoNormal">Other files:</p> <p class="MsoNormal">· YOPP-SH_TOP1_wrfout_list.txt<br>Contains the complete WRF output name list for TOP1 with 16 WRF forecasts, with the first starting on May 09, 2022, at 1200 UTC and the last on May 17, 2022, at 0000 UTC, with a 12-hour interval between each initial forecast time. Each forecast has a duration of 5 days. It contains file names corresponding to both Routine and Extra experiment configurations, the 3DEnVar and MRI-4DVAR data assimilation (DA) approaches, and model domains d01 and d02.</p> <p class="MsoNormal">· YOPP-SH_TOP2_wrfout_list.txt<br>Contains the complete WRF output name list for TOP2 with 11 WRF forecasts, with the first starting on June 02, 2022, at 1200 UTC and the last on June 07, 2022, at 0000 UTC, with a 12-hour interval between each initial forecast time. Each forecast has a duration of 5 days. It contains file names corresponding to both Routine and Extra experiment configurations, the 3DEnVar and MRI-4DVAR data assimilation (DA) approaches, and model domains d01 and d02.</p> <p class="MsoNormal">· YOPP-SH_TOP3_wrfout_list.txt<br>Contains the complete WRF output name list for TOP3 with 16 WRF forecasts, with the first starting on July 01, 2022, at 1200 UTC and the last on July 09, 2022, at 0000 UTC, with a 12-hour interval between each initial forecast time. Each forecast has a duration of 5 days. It contains file names corresponding to both Routine and Extra experiment configurations, the 3DEnVar and MRI-4DVAR data assimilation (DA) approaches, and model domains d01 and d02.</p> <p class="MsoNormal">· YOPP-SH_TOP4_wrfout_list.txt<br>Contains the complete WRF output name list for TOP4 with 11 WRF forecasts, with the first starting on July 14, 2022, at 0000 UTC and the last on July 19, 2022, at 0000 UTC, with a 12-hour interval between each initial forecast time. Each forecast has a duration of 5 days. It contains file names corresponding to both Routine and Extra experiment configurations, the 3DEnVar and MRI-4DVAR data assimilation (DA) approaches, and model domains d01 and d02.</p> <p class="MsoNormal">· YOPP-SH_TOP56_wrfout_list.txt<br>Contains the complete WRF output name list for TOP5 and TOP6 with 23 WRF forecasts, with the first starting on July 23, 2022, at 0000 UTC and the last on August 03, 2022, at 0000 UTC, with a 12-hour interval between each initial forecast time. Each forecast has a duration of 5 days. It contains file names corresponding to both Routine and Extra experiment configurations, the 3DEnVar and MRI-4DVAR data assimilation (DA) approaches, and model domains d01 and d02.</p> <p class="MsoNormal">· YOPP-SH_TOP7_wrfout_list.txt<br>Contains the complete WRF output name list for TOP7 with 21 WRF forecasts, with the first starting on August 20, 2022, at 0000 UTC and the last on August 30, 2022, at 0000 UTC, with a 12-hour interval between each initial forecast time. Each forecast has a duration of 5 days. It contains file names corresponding to both Routine and Extra experiment configurations, the 3DEnVar and MRI-4DVAR data assimilation (DA) approaches, and model domains d01 and d02.</p>