Diagnostics of the Performance of the NCEP
Operational
Global Analysis/Forecast System
Glenn H. White
National Centers for Environmental Prediction
W/NP23,
Glenn.White@NOAA.GOV
Comparison of GFS Analyses and Forecasts With ECMWF
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Comparison of GFS Analyses and Forecasts With
Other
NWP Centers
Powerpoint Differences in wind analyses and forecasts between GFS and ECMWF for Aug, 6, 2001 IC
Powerpoint Differences in wind analyses between GFS, ECMWF and other centers Oct. 5, 2011
Powerpoint Diagnostics of ensemble hybrid assimilation experiments NH summer Sept. 15, 2011
Powerpoint Performance of ensemble hybrid assimilation experiments NH summer August 23, 2011
Powerpoint First look at prd12q3i ensemble hybrid assimilation experiment NH summer August 12, 2011
Powerpoint Diagnostics of prd12q3h ensemble hybrid assimilation experiment NH summer July 31, 2011
Powerpoint Diagnostics of coupled data assimilation experiment NH winter and spring August 12, 2011
Powerpoint Performance of coupled data assimilation experiment NH winter and spring July 11, 2011
Powerpoint Performance of prd12q3h ensemble hybrid analysis experiment July 26, 2011
Powerpoint Change in 2m temperature with resolution in operational GFS July 19, 2011
Powerpoint Changes in 10 m winds and 2 m temperatures over US with recent GFS change May 8, 2011
Powerpoint Diagnostics of coupled gdas experiment NH winter part 1
Powerpoint Diagnostics of coupled gdas experiment NH winter part 2
Powerpoint Lazy mean's index for new gsi/gfsadjustments implemented May 9, 2011
Powerpoint Summary of coupled gdas experiments
Powerpoint Diagnostics of coupled gdas experiment NH summer
Powerpoint Scores for coupled gdas experiment NH winter
Powerpoint Scores for coupled gdas experiment NH summer
Powerpoint Overview of EMC Apr. 5, 2011
Powerpoint GCMWB Meeting Presentation on new gsi and gfs tuning tested June 2010-Feb. 2011 on Feb. 24, 2011
Powerpoint Diagnostics of new gsi and gfs tuning Dec. 2010-Feb. 2011
Powerpoint Skill of new gsi and gfs tuning Dec.2010-Feb. 2011
Powerpoint Skill of new gsi and gfs tuning June-Nov. 7, 2010
Powerpoint Diagnostics of new gsi and gfs tuning Sep.-Nov. 7, 2010
Powerpoint Skill Performance of new gsi and gfs tuning June16-Nov. 7, 2010
Powerpoint Performance of new gsi and bug fixes
Powerpoint Performance of new gsi and bug fixes
Powerpoint Performance of new gsi and bug fixes
Powerpoint Presentation on seasonal forecasting for Exeter, England
Powerpoint Effect of reducing background diffusion in the stratsophere
Powerpoint Normalized rms vector wind error in the old and new GFS
Powerpoint Effect of decreasing background diffusion in the stratosphere and winds in the old and new GFS
Powerpoint Presentation at the Wallace symposium Sept. 29, 2010 in Seattle, WA
Powerpoint Temperature biases in the new GFS
Powerpoint The effect of the new GFS implementation on Aug.10 skill
Powerpoint Changing thermal roughness in the GFS
Powerpoint EMC and the global precipitation mission--workshop presentation
Powerpoint Operational performance of the new GFS
Powerpoint Easterly wind surges in the new GFS
Powerpoint Verification of 2 meter temperature in the new GFS
Powerpoint 2 meter temperature in the new GFS
Powerpoint Wind bias in pre13a the new GFS
Powerpoint Pre13a and winds
Powerpoint Pre13a and Typhoon Marakot
Powerpoint Problems in the tropical stratosphere in pre13a
Powerpoint Systematic error in operational GFS and pre13a
Powerpoint Effect of using correct snow in pre13a
Powerpoint Snow error in pre13a
Powerpoint Comparison of flux fields in operational GFS and pre13a during DJF0910
Powerpoint Comparison of pressure level fields in operational and new GFS (pre13a) during DJF0910
Powerpoint Presentation on performance of T574 with new convection March 11, 2010
Powerpoint Yet Another Update of skill of T574 with new convection for winter 2009/2010 March 2010
Powerpoint Update of skill of T574 with new convection for winter 2009/2010 Feb. 18, 2010
Powerpoint Update of skill of T574 with new convection for hurricane season 2009 Feb. 18, 2010
Powerpoint Diagnostics of flux fields from T574 experiments for hurricane season 2008 Jan. 25, 2010
Powerpoint Update of skill of T574 experiments for hurricane season 2008 Jan. 28, 2010
Powerpoint Weather briefing Review of model skill for 2009 Jan. 14, 2010
Powerpoint Skill of T574 experiments for hurricane season 2008 Jan. 11, 2010
Powerpoint Skill of fall package Dec 15, 2009
Powerpoint Tropical wind skill dropouts in fall package Nov 25, 2009
Powerpoint Skill of fall package Nov 16, 2009
Powerpoint Performance of fall package in forecasting Hurricane Bill
Powerpoint Diagnostics of proposed shallow convection package
Powerpoint Performance of proposed shallow convection package
Powerpoint Performance of operational GFS in September 2009
Powerpoint Comparison of hurricane structure in proposed and operational global analyses
Powerpoint Weather Briefing on Performance of Proposed Fall Package Sept. 24, 2009
Powerpoint Tests of T574 with reduced orographic drag and with radiation package
Powerpoint Test of T574, 64 levels, Eulerian model
Powerpoint Weather Briefing Performance of operational GFS March 26, 2009
Powerpoint Test of T574, 64 layer, Eulerian GFS March 2009
Word document Illustration of top problems in GFS
Word document List of top problems in GFS
Powerpoint Effect of changing albedo on skill of new gfs (pru11 vs. pru8) Feb. 18, 2009
Powerpoint Systematic performance of new gfs (pru8) vs. new gsi Feb. 16, 2009
Powerpoint Skill of new gsi Feb. 10, 2009
Powerpoint Skill of new gfs (pru8) Jan. 30, 2009
Powerpoint Systematic performance of new gsi Jan. 21, 2009
Powerpoint Skill of GFS vs. CDAS 1981-2008 (Bob Kistler)
Powerpoint Effect of vertical coordinate on new gfs Dec. 3, 2008
Powerpoint 2m temperatures in new gfs (prc1) Aug.22, 2008
Powerpoint Weather briefing August 14, 2008 skill, systematic performance of GSI parallels
Powerpoint Weather briefing July 31, 2008 review of GFS skill, systematic errors
Powerpoint Weather briefing July 17, 2008 performance of GSI parallels
Powerpoint Weather briefing June 19, 2008 model intercomparison
Powerpoint Weather briefing June 5, 2008 GSI changes vs. GSI and model changes
Powerpoint Weather briefing May 22, 2008 performance of parallels
Powerpoint Funny features in GFS in equatorial stratosphere
Powerpoint Weather briefing Apr.10, 2008 performance of parallels
Powerpoint Weather briefing Apr.10, 2008 stratus clouds in the CFSRR
Powerpoint Weather briefing Mar. 27, 2008 performance of parallels
Powerpoint Vertical circulations in ECMWF and GFS analyses
Powerpoint Weather briefing Feb. 14, 2008 transient eddy kinetic energy in the GFS
Powerpoint Weather briefing Jan. 31, 2008 performance of parallels
Powerpoint Weather briefing Jan. 17, 2008 performance of parallels
Powerpoint Weather briefing Jan. 2, 2008 GFS and other centers' performance
Powerpoint Weather Forecasting and the Global Precipitation Mission December 12 2007
Powerpoint Weather briefing December 6 2007
Powerpoint Weather briefing November 8 2007
Powerpoint Performance of the GFS/CFS in the tropics
Powerpoint Weather briefing October 11 2007
Powerpoint Weather briefing on performance of GFS during June-Aug. 2007 September 13 2007
Powerpoint Weather briefing August 30 2007
Powerpoint Weather briefing on warm bias in GFS August 16 2007
Powerpoint Weather briefing August 2 2007
Powerpoint PPT presentation on warm bias in GFS
Powerpoint PPT presentation on physics parallel tests July 6 2007 to physics group
Powerpoint Weather briefing on physics parallel tests July 5 2007
Powerpoint Weather briefing on scores in physics parallel tests June 21 2007
Powerpoint Weather briefing on scores for parallel tests of GSI vs SSI March 1 2007
Powerpoint PPT presentation on gfs for San Francisco meeting on systematic error Feb. 12-16 2007
Powerpoint Poster presentation on gfs for San Francisco meeting on systematic error Feb. 12-16 2007
Powerpoint SSI vs. pry vs. prym (2 line change to pbl)
Powerpoint Weather briefing February 1, 2007 scores (Fanglin, Keith Brill), GSI vs. GFS
Powerpoint Transient eddies in the GFS and ECMWF analyses and forecasts
Powerpoint Weather briefing January 18, 2007
Powerpoint A Comparison of GFS clouds with three independent estimates for November 2006
Powerpoint Weather briefing January 4, 2007
Powerpoint GSI Without sfc p bug vs op SSI
Powerpoint GSI Without sfc p bug vs GDS with
Powerpoint Weather briefing December 7, 2006
Powerpoint Diabatic heating spin-up in GFS
Powerpoint Weather briefing November 9, 2006
Powerpoint Weather briefing October 12, 2006
Powerpoint Weather briefing September 28, 2006
Powerpoint Weather briefing September 14, 2006
Powerpoint Weather briefing August 31, 2006
Powerpoint Weather briefing August 17, 2006
Powerpoint African easterly jet in ECMWF and GFS analyses and GFS forecasts June-July 2006
Powerpoint Weather briefing July 20, 2006
Powerpoint Weather briefing July 6, 2006
Powerpoint Hybrid parallel--Jun22
Powerpoint Hybrid parallel with corrected orography-flux results
Powerpoint Hybrid parallel with corrected orography-vertical velocity and cloud liquid water results
Powerpoint Hybrid parallel with corrected orography-wind results
Powerpoint Hybrid parallel with corrected orography-more results
Powerpoint Hybrid parallel with corrected orography
Powerpoint Hybrid parallel Apr16-May10,2006
Powerpoint Total ozone in parallel y vs parallel y with hybrid vs operational April 2006
Powerpoint Ozone in parallel y vs parallel y with hybrid vs operational April 2006
Powerpoint Parallel y vs parallel y with hybrid vs operational April 2006
Powerpoint Systematic errors in the southeast Pacific in DJF 05/06
Powerpoint Recent scores from the Met Office
Powerpoint Presentation on analysis differences and 1-day forecasts in different nwp centers
Powerpoint Presentation on analysis increments in GFS and GSI hybrid
Powerpoint Presentation on glacial ice test
Powerpoint Presentation on glacial ice test
Powerpoint Presentation on glacial ice test
Powerpoint Presentation on test of GSI hybrid
Nov.-Dec.05 Powerpoint Presentation on statistics on GSI/hybrid parallel
performance Nov.-Dec.05 Powerpoint Presentation on GSI/hybrid parallel
performance Nov.-Dec.05 Powerpoint Presentation on GSI/hybrid parallel
performance Powerpoint Presentation on GSI/sigma parallel
tropical
performance Powerpoint Presentation on GSI/hybrid parallel
Sep-Oct 05 Powerpoint Presentation to National Academy of
Sciences
panel on Global Precip Mission and NOAA Powerpoint Presentation--Comparison of the
operational with
glacial ice parallel runs Aug. 2005 Powerpoint Presentation--Comparison of the
operational with
two parallel runs Aug-Sep. 2005 Powerpoint Presentation--Performance of the new
GFS in JJA
2005 Powerpoint Presentation--Effect of the new GFS
on the east
Pacific problem in August 2004 Powerpoint Presentation--Effect of the new GFS
on the east
Pacific problem in September 2004 Powerpoint Presentation--History of the
Galapagos problem
in August 1999-2004 Powerpoint Presentation--Comparison of the
operational and
pry GFS June 1-10 2005 Powerpoint Presentation--Problems of the GFS in
the Tropics
Powerpoint Presentation--Comparison of spin-up
in pry and
operational systems Apr. 2005 Powerpoint Presentation--Further comparison of
spin-up in
pry and operational systems Apr. 2005 Powerpoint Presentation--PRY experiment with
T382 system
fields related to soil moisture Jan. 2005 Powerpoint Presentation--PRY experiment with
T382 system
Dec.4-Jan.21 Powerpoint Presentation--Summary of PRY
experiments with
T382 system to address analyis problems Powerpoint Presentation--PRY experiments with
T382 system
to address analyis problems Powerpoint Presentation--Tests of diffusion and
mountain
blocking at T382 in Dec. 2004 Powerpoint Presentation--Further tests of
diffusion and
mountain blocking in Feb. 2004 Powerpoint Presentation--Cold Bias in the GFS in
Nov.
2004--Part 2 Powerpoint Presentation--Parallel test of the
global model
in Nov. 04 Powerpoint Presentation--Cold Bias in the GFS in
Nov. 2004 Powerpoint Presentations on Kistler's
Tests of GFS on ASP and Blue Powerpoint Presentation--blueaug
Powerpoint Presentation--bluefeb
Powerpoint Presentation--bluefb511 Powerpoint Presentation--asptest2 Powerpoint Presentation--asptests
Powerpoint Presentation--asp917 Powerpoint Presentation--bkasp
Powerpoint Presentation--Flip-flops in the GFS Powerpoint Presentation--Forecasts busts of
Sept. 22 A Powerpoint Presentation on Vertical Circulations
in the
East Pacific A
Powerpoint Presentation on Changes in Cloud
Liquid Water in
the First Time Step Powerpoint Presentation on A
Comparison of ECMWF and GFS Analyses and Forecasts for March 2004 A
Test of Changing Shallow Convection March-Apr 2004 A
Comparison of ECMWF and GFS 850 hPa Winds
for Nov.
2003 The
Effect of Isolated Island observations and Skill in OLR Test
of new mountain parameterization in October 2003 (offline contact Glenn.White@noaa.gov) Drift
in operational model Aug.-Oct. 2003 (offline contact Glenn.White@noaa.gov) Test
of analysis changes in October 2003 (offline contact Glenn.White@noaa.gov) Powerpoint Presentation on Systematic Errors in
Temperature
Powerpoint Presentation for Branch Map
Discussion of
Parallel Test of RTM Long Wave Code June 12 Powerpoint Presentation for Branch Map
Discussion of Moorthi's Trial of RTM Long
Wave Code Powerpoint Presentation for Branch Map
Discussion of
Analysis Differences between ECMWF and GFS Powerpoint Presentation for Branch Map
Discussion Transient
Eddies in GDAS and NCEP-1 Extended
abstract for 15-60 day forecast workshop Performance
of the T254 model in April 2002 (offline contact Glenn.White@noaa.gov) Performance
of the T254 model in March 2002 (offline contact Glenn.White@noaa.gov) Branch
briefing March 7, 2002 on cold bias in the MRF (offline contact Glenn.White@noaa.gov) Tropical
wind
error in the East Pacific Effects
of truncation on precipitation (offline contact Glenn.White@noaa.gov) A
comparison
of the MRF and FNOC in the tropics Transient
disturbances in individual forecasts (offline contact Glenn.White@noaa.gov) Model
analyses and forecasts of low-level stratus clouds in the east Pacific
during
JJA 2001 Model
analyses and
forecasts of the tropical upper tropospheric
trough
during July 2001 Paper
on
systematic error for workshop on systematic error Paper onNCEP global model fluxes for workshop on
systematic error
Paper
on
air sea fluxes from NWP for workshop on air-sea fluxes