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VLab Issue #66132 - GFS v15.2.1 changes
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Diff for: ‎docs/Release_Notes.gfs.v15.2.0.txt

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GFS v15.2.0 RELEASE NOTES
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PRELUDE (taken from GFS v15.2.0 SCN)
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GFS version 15.1 was implemented into operation at the 12Z cycle on June 12, 2019. It was the first
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GFS implementation with the finite­ volume cubed-sphere (FV3) dynamical core as the Weather Service’s
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Next Generation Global Prediction System (NGGPS).
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GFS version 15.2 is a minor upgrade. The major change to the system is to ingest new and replacement
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satellite observations for data assimilation. It also contains a few other minor upgrades and bug fixes.
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1) Assimilate new satellite observations
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* GOES-17 AMVs
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* GOES-17 has already replaced GOES-15 as the operational GOES-West satellite. Distribution of
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GOES-15 products is expected to cease around December 2019 and active assimilation of GOES-17
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AMVs is required to prevent a gap in data coverage.
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* Metop-C AMSU and MHS
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* Metop-C is now the primary satellite in the 9:30 AM orbit. Assimilation of these data provide
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additional impact as well as adding robustness to the system.
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* KOMPSAT-5 (GPS-RO)
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* Provides additional robustness to the system.
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* Addition changes are made to VIIRS AMV ingest code to allow continued use after an expected change
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to the BUFR format.
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2) Assimilate buoyb sea-surface temperature (SST) data
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TAC2BUFR changes in the buoy network resulted in a reduction of available SST measurements from buoys
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to 10% or less of expected levels. Obsproc and GSI changes were required to restore data counts to
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previous levels.
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3) New product: Graphical Turbulence Guidance (GTG)
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Global Turbulence product generated using NCAR GTG algorithm will start being disseminated on NOMADS.
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The product will be available 3 hourly from F06 to F36 and horizontal resolution will be a quarter
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degree. gfs.t{CC}Z.gtg.0p25.grb2f{HHH}
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4) Update the Unified Post Processor(UPP) to address a mask issue of several land surface fields over
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water bodies in grib2 products.
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This update will make GFS.v15.2 p-grid products to be more consistent with GFS.v14 products, and
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remove spurious soil moisture along coastlines. These land surface fields include Soil Moisture,
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Soil Temperature, Liquid Volumetric Soil Moisture, WEASD, Snow Depth, Water Runoff, GFLUX Ground
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Heat Flux, WILT Wilting Point, and FLDCP Field Capacity.
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Affected product files are:
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gfs.t{CC}Z.pgrb2.0p25.F{HHH}
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gfs.t{CC}Z.pgrb2b.0p25.g{HHH}
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gfs.t{CC}Z.pgrb2.0p50.F{HHH}
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gfs.t{CC}Z.pgrb2b.0p50.g{HHH}
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gfs.t{CC}Z.pgrb2.1p00.F{HHH}
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gfs.t{CC}Z.pgrb2b.1p00.g{HHH}
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gfs.t{CC}Z.sfluxgrbf{HHH}.grib2
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Where CC is cycle for 00, 06, 12, 18 UTC, and HHH is forecast hour.
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5) The vessel icing program uses OISST as input. OISST will not be ported from WCOSS Phase 1 to Phase 3
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after Phase 1 is decommissioned in 2020. A decision was made to move the vessel icing program
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within the Unified Post Processor(UPP) and use GFS forecast skin temperature as input. Current vessel
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icing product in operation (sice.tCCz.siceg) has a 1-deg resolution and is disseminated to the public at
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ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/omb/prod/sice.yyyymmdd/
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New vessel icing product will be included as a variable (ICEG) in GFS p-grid products gfs.tCCz.pgrb2.xpxx.fxxx
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and gfs.tCCz.pgrb2b.xpxx.fxxx at 0.25, 0.5, and 1.0-deg resolutions, and be disseminated to the public at
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ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.yyyymmdd/
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6) Added three stations to station time series bufr soundings:
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006011 62.02N 6.76W TOR 00 Thorshvan, Denmark 54 Usr Rqst 4-19
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999913 15.51S 128.15E WYN 00 Wyndham aerodrome Australia 4 Usr Rqst 1-19
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999914 57.48N 7.36W EGPL 00 Benbecula, Scotland, UK 6 Usr Rqst 1-19
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The affected output files are:
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gfs_yyyymmddhh.sfc
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gfs_yyyymmddhh.snd
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gfs.tCCz.bufrsnd.tar.gz
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Three additional files for the stations:
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bufr.006011.yyyymmddhh
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bufr.999913.yyyymmddhh
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bufr.999914.yyyymmddhh
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7) Reduction of water temperature biases in small lakes.
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For small lakes adequate observations do not always exit to support the analysis of lake surface
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temperature, often leading to significant departures from both the climatology and real-time observation.
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Two changes were introduced to ensure that lake temperatures do not deviate from the climatology when
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observations are not available. The first change is to replace a surface mask file at 0.5-degree
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resolution with the one on the T1534 Gaussian grid (~13km) to prevent unrealistic SST climatology
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from being used for updating the background of the near sea-surface temperature analysis over small
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water bodies, such as those in the Great Salt Lake. The second change is to reduce the relaxation
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time scale of the SST to climatology in GDAS forecast step from 90 days to 10 days.
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8) Changes to NOAAPORT/SBN
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Product Removals
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* GADS FAX product which contains tropical surface analysis in TIF format with G4 compression.
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IMPLEMENTATION INSTRUCTIONS
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* NOAA Vlab GIT is used to manage GFS.v15.2 code. The SPA(s) handling the GFS.v15.2 implementation need to have
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permission to clone Vlab gerrit repositories. So far Wojciech Cencek has been given access to all GFS.v15.2
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related git repositories. Please contact [email protected] or [email protected] if there is any VLAB
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access issue and/or the individual code managers listed under item #6) below. Please follow the following
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steps to install the package on WCOSS DELL
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1) cd $NWROOTp3
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2) mkdir gfs.v15.2.0
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3) cd gfs.v15.2.0
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4) git clone --recursive gerrit:global-workflow .
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5) git checkout feature/dev-v15.2
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6) cd sorc
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7) ./checkout.sh
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This script extracts the following GFS components from gerrit
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MODEL -- tag nemsfv3_gfsv15.2.1 [email protected]
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GSI -- tag fv3da_gfs.v15.2.0 [email protected]
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UPP -- tag ncep_post_gtg.v1.1.4 [email protected]
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WAFS -- tag gfs_wafs.v5.0.9 [email protected]
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8) ./build_all.sh
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*This script compiles all GFS components. Runtime output from the build for each package is written
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to log files in directory logs. To build an individual program, for instance, gsi, use build_gsi.sh.
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9) ./link_fv3gfs.sh nco dell
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* Note: 1) ecflow suite definition and scripts are saved in gfs.v15.2.0/ecflow/ecf
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2) ncep_post_gtg.v1.1.4 contains restricted GTG (Graphic Turbulence Guidance) code provided by
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NCAR. Please do not post the GTG code in any public domain.
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JOB CHANGES
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* See docs/Release_Notes.gfs_downstream.v15.2.0.txt
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SORC CHANGES
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* sorc/
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* checkout.sh - update to check out the following tags
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* NEMSfv3gfs nemsfv3_gfsv15.2.1
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* ProdGSI fv3da_gfsv15.2.0
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* EMC_post_gtg ncep_post_gtg.v1.1.4
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* EMC_gfs_wafs gfs_wafs.v5.0.9
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* sorc/global_chgres.fd/
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* sfcsub.F - bug fix. set logical variable (lmask) to be false for a land surface variable
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* sorc/global_cycle.fd/
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* sfcsub.F - bug fix. set logical variable (lmask) to be false for a land surface variable
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SCRIPT CHANGES
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* scripts/
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* run_gfsmos_master.sh.cray - remove reference to COMROOTp1
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* run_gfsmos_master.sh.dell - remove reference to COMROOTp1
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* additional script changes documented in docs/Release_Notes.gfs_downstream.v15.2.0.txt
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PARM/CONFIG CHANGES
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* parm/
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* Two files are modified to set a
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* parm/config/config.base.emc.dyn - set 10 day relaxaion time scale to SST climatology in GDAS forecast
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* parm/config/config.base.nco.static - set 10 day relaxaion time scale to SST climatology in GDAS forecast
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* Two files were modified for adding three bufr stations:
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* parm/product/bufr_stalist.meteo.gfs
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* parm/product/bufr_stalist.meteo.gfs3
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FIX CHANGES
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* Files in fix/fix_gsi altered by GFS DA v15.2. See GFS DA v15.2 release notes
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(sorc/gsi.fd/doc/Release_Notes.gfs_da.v15.2.0.txt) for details
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PRODUCT CHANGES
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* see SCN
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RESOURCE INFORMATION
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* Frequency of run
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* No change from GFS v15.1
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* Commonly used libraries, compiler, and modules are defined in gfs.v15.2.0/modulefiles. For nemsfv3gfs, gsi, upp, wafs
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they maintain their own module files under gfs.v15.2.0/sorc/(fv3gfs gsi gfs_post global_wafs).fd/modulefiles
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* GSI updated to use bufr/11.3.0
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* Data retention time under $COMROOTp3 for GFS.v15.2 should be the same as GFS.v15.1.
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* Disk space:
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* About 4 Gb more per gdas cycle due to additional observation data in gdas and enkf diagnostic files
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* Computational resources and run times:
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* Due to processing additional observation data the runtime for the following jobs increases with
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respect to GFS v15.1 as noted below
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* gfs_analysis : about 30 seconds longer (27.4 minutes for GFS v15.1 -vs- 27.9 minutes for GFS v15.2)
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* gdas_enkf_select_obs : about 1 minute longer (3.7 for GFS v15.1 -vs- 4.7 for GFS v15.2)
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* gdas_enkf_innovate_obs_grp*: about 30 seconds longer (14.8 for GFS v15.1 -vs - 15.3 for GFS v15.2)
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* gdas_enkf_update : about 20 seconds longer (6.4 for GFS v15.1 -vs- 6.7 for GFS v15.2)
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PRE-IMPLEMENTATION TESTING REQUIREMENTS
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* Which production jobs should be tested as part of this implementation?
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* The entire GFS v15.2 package needs to be installed and tested. EMC can run the same date
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and compare NCO and EMC output to confirm the EMC and NCO tests reproduce each other
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* Does this change require a 30-day evaluation?
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* No.
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* Suggested evaluators
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* Please contact the following EMC staff for the indicated components
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[email protected] - MODEL
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[email protected] - DA
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[email protected] - UPP
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[email protected] - WAFS
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[email protected] - downstream products
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DISSEMINATION INFORMATION
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* Where should this output be sent?
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* No change from GFS v15.1
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* Who are the users?
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* No change from GFS v15.1
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* Which output files should be transferred from PROD WCOSS to DEV WCOSS?
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* No change from GFS v15.1
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* Directory changes
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* No change from GFS v15.1
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* File changes.
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* See SCN
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HPSS ARCHIVE
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No change from GFS v15.1
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JOB DEPENDENCIES & FLOW DIAGRAM
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* No change from GFS v15.1
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===========
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Prepared by
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Fanglin.Yang@noaa
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[email protected]
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[email protected]
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[email protected]
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Diff for: ‎docs/Release_Notes.gfs_downstream.v15.2.0.txt

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RELEASE NOTES: GFS.v15.2.0 downstream products - released October 19, 2019 (tentative date)
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CODE CHANGES
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No code change
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JOB CHANGES
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The followig jobs (J-job) have been removed from GFS v15.2.0
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- JGFS_FAX (retired in June 12, 2019)
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- JGFS_FAX_WAFS (retired in June 12, 2019)
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- JGDAS_TROPC (NCO approved to remove in GFS V15.2.0)
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The remain GFS downstream jobs are below:
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- JGDAS_GEMPAK
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- JGDAS_GEMPAK_META_NCDC
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- JGFS_AWIPS_G2
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- JGFS_FBWIND
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- JGFS_GEMPAK
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- JGFS_GEMPAK_META
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- JGFS_PGRB2_SPEC_GEMPAK
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- JGFS_AWIPS_20KM_1P0DEG
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- JGFS_GEMPAK_NCDC_UPAPGIF
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- JGFS_PGRB2_SPEC_NPOESS
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- JGDAS_BULLS_NAVY
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All Job cards have same setting for testing on DELL with real-time GFS v15.2 data.
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( An example: JGFS_GEMPAK )
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# LSBATCH: User input
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#BSUB -J gfs_gempak_00
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#BSUB -o /gpfs/dell2/ptmp/Boi.Vuong/output/gfs_gempak_00.o%J
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#BSUB -q debug
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#BSUB -cwd /gpfs/dell2/ptmp/Boi.Vuong/output
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#BSUB -W 00:30
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#BSUB -P GFS-T2O
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#BSUB -n 24 # 24 tasks
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#BSUB -R span[ptile=12] # 12 task per node
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#BSUB -R affinity[core(1):distribute=balance] # using 12 cores on node and bind to 1
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# core per task and distribute across sockets
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####################################
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## Load the GRIB Utilities modules
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####################################
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module load EnvVars/1.0.2
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module load ips/18.0.1.163
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module load CFP/2.0.1
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module load impi/18.0.1
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module load lsf/10.1
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module load prod_util/1.1.3
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module load prod_envir/1.0.3
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module load grib_util/1.1.0
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###########################################
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# Now set up GEMPAK/NTRANS environment
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###########################################
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module load gempak/7.3.1
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module list
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FV3 GFS DRIVER:
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All drivers are used to test GFS downtream jobs in gfs.v15.2.0/driver/product/run_*_dell.sh_xx where is xx is cycle
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The followig jobs, scripts, parm have been modified to meet NCO - EE2 implementation standards.
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JOB CHANGES
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JGDAS_BULLS_NAVY -removed dependencies for gempak on phase 1
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JGDAS_GEMPAK -removed dependencies for gempak on phase 1
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JGDAS_GEMPAK_META_NCDC
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JGFS_AWIPS_20KM_1P0DEG
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JGFS_AWIPS_G2
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JGFS_FBWIND
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JGFS_GEMPAK -removed dependencies for gempak on phase 1
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JGFS_GEMPAK_META -removed dependencies for gempak on phase 1
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JGFS_GEMPAK_NCDC_UPAPGIF -removed dependencies for gempak on phase 1
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JGFS_PGRB2_SPEC_GEMPAK -removed dependencies for gempak on phase 1
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JGFS_PGRB2_SPEC_NPOESS
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SCRIPTS CHANGES
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exgdas_bulls_navy.sh.ecf -removed dependencies for sstoi_grb on phase 1
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exgdas_nawips.sh.ecf -removed dependencies for gempak on phase 1
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exgempak_gdas_gif_ncdc.sh.ecf -removed dependencies for gempak on phase 1
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exgempak_gfs_gif_ncdc_skew_t.sh.ecf -removed dependencies for gempak on phase 1
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exgfs_awips_20km_1p0deg.sh.ecf
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exgfs_fbwind.sh.ecf
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exgfs_gempak_meta.sh.ecf -removed dependencies for gempak on phase 1
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exgfs_grib_awips_g2.sh.ecf
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exgfs_grib_awips.sh.ecf
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exgfs_nawips.sh.ecf -removed dependencies for gempak on phase 1
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exglobal_grib2_special_npoess.sh.ecf
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exgoes_nawips.sh.ecf -removed dependencies for gempak on phase 1
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exnawips.sh.ecf -removed dependencies for gempak on phase 1
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PARM CHANGES
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No changes in parm cards for AWIPS products from GFS v15.1
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USH CHANGES
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mkbull_ntc.sh -removed dependencies for sstoi_grb on phase 1
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GEMPAK CHANGES
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-Adding the diretory dictionaries -removed dependencies for gempak on phase 1
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(Note: This directory comes from phase 1)
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- All gempak's USH and FIX have been modified to remove all dependencies on Phase I
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ECFLOW CHANGES
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-Removed GFS FAX, GFS FAX WAFS and GDAS_TROPC in ecflow suite definition and scripts
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===========
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Prepared by
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[email protected]

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