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2 results for “3DVAR”
OTREC_3DVar_Raymond_Fuchs-Stone
<p>This gzipped tar file supplies the complete data and analysis trail for the production of the OTREC project 3DVar analyses. The avaps branch includes directories for each flight, with names indicating the flight date in format yyyymmdd. Under each of these directories are the original dropsonde soundings from NCAR EOL in NetCDF format, as well as the regularized z-grid versions used for the 3DVar analysis, in Candis (doi:10.5281/zenodo.5150519) format. The actual 3DVar analyses (Z*) are in the subdirectories box*, depending on which OTREC box was flown. Bad soundings are moved to their own subdirectory so that they are not used in the 3DVar analysis. The analyses are named "merge-1.cdf". In addition, the shell script avapsbox.sh is included, by which the 3DVar analysis is performed for each case. This calls other scripts in the "script" directory. These scripts and the Candis executables must be in the user's path. Finally, in each directory is a "mask" file which defines the areal coverage of the dropsondes in each case. The other main subdirectory is called "avhrrsst", containing the sea surface temperature files from AVHRR satellite data. These data are referred to by the 3DVar calculation as well. Original AVHRR files from NOAA are included, as well as a shell script "otrec.sh" that puts needed SST data into the file "otrec_sst.cdf".</p><p>This version contains 3DVAR files translated from Candis to NetCDF format for the convenience of users. They are located in the same directories as the Candis files (otrec/avaps/2019/box/*) and have the file names of the form 2019mmdd-box*.nc.</p>
Pseudo-Soundings for Publication "Changes in the simulation of instability indices over the Iberian Peninsula due to the use of 3DVAR data assimilation"
<p>These data are made available as part of paper: S. J. González-Rojí, S. Carreno-Madinabeitia, J. Sáenz, and G. Ibarra-Berastegi (2021) "Changes in the simulation of atmospheric instability over the Iberian Peninsula due to the use of 3DVAR data assimilation", published in <em>Hydrology and Earth System Sciences (HESS) (</em><a href="https://doi.org/10.5194/hess-25-3471-2021">https://doi.org/10.5194/hess-25-3471-2021</a><em>)</em>. The dataset holds selected postprocessed files that allow to reproduce all the results in the paper.</p> <p>Two WRF experiments nested in ERA-Interim were prepared. The first one (N) was configured as in standard numerical downscaling experiments. The second one (D), with the same parameterizations, included a step of 3DVAR data assimilation every 6 hours. The original experiments covered period 2010-2014 after a year of spin-up (2019). </p> <p>The following files are included:</p> <p>- PseudoSoundings_EXP_YYYY: Contains the Pressure, Temperature and Mixing Ratio on each point included in the mask defined for the Iberian Peninsula. The values of each model level are included. The values at 00 and 12 UTC are included. </p> <p>- ListPointsWRF.txt: Provides the order followed in the nPoints dimension of the nc files. The longitud and latitude of each point is also provided in that list. </p> <p>The reference data of the soundings was download from the University of Wyoming, and they are freely available in this website: <a href="http://weather.uwyo.edu/upperair/sounding.html">http://weather.uwyo.edu/upperair/sounding.html</a></p> <p> </p> <p> </p>
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