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Module 17 MM5: Climate Simulation. William J. Gutowski, Jr. Iowa State University. Module 17 MM5: Climate Simulation. Examples of MM5 climate simulation: North America Arctic. Project to Intercompare Regional Climate Simulations (PIRCS).
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Module 17 MM5: Climate Simulation William J. Gutowski, Jr. Iowa State University
Module 17 MM5: Climate Simulation • Examples of MM5 climate simulation: • North America • Arctic
Project to Intercompare Regional Climate Simulations(PIRCS) W. J. Gutowski, R. W. Arritt, G. S. Takle, Z. Pan International Institute of Theoretical and Applied Physics Iowa State University (http://www.pircs.iastate.edu)
PIRCS Participating Models • Danish Met. Inst. (HIRHAM4; J.H. Christensen, O.B. Christensen) • Université du Québec à Montréal (D. Caya, S. Biner) • Scripps Institution of Oceanography (RSM; J. Roads, S. Chen) • NCEP (RSM; S.-Y. Hong) • NASA - Marshall (MM5/BATS; W. Lapenta) • CSIRO (DARLAM; J. McGregor, J. Katzfey) • Colorado State University (ClimRAMS; G. Liston) • Iowa State University (RegCM2; Z. Pan) • Iowa State University (MM5/LSM; D. Flory) • Univ. of Maryland / NASA-GSFC (GEOS; M. Fox-Rabinovitz) • SMHI / Rossby Centre (RCA; M. Rummukainen, C. Jones) • NOAA (RUC2; G. Grell) • ETH (D. Luethi) • Universidad Complutense Madrid (PROMES; M.Gaertner) • Université Catholique du Louvain (P. Marbaix) • Argnonne National Lab (MM5 V3; J. Taylor, J. Larson)
PIRCS Mission Evaluate regional climate simulation by mesoscale models, using a common framework
Summer 1988 - Drought Jet Stream Cool & Damp Heat Wave Weak & Dry Southerly Flow Adapted from CAC, NWS, NOAA
Summer 1993 - Flood Cool Jet Stream FLood Heat Wave Warm & Moist Southerly Flow Adapted from CAC, NWS, NOAA
Experiment 1 Periods • 15 May - 13 July 1988 (Drought) • 1 June - 30 July 1993 (Flood)
Experiment 1 Initial/Boundary Conditions • IC: NCEP/NCAR reanalysis, including soil moisture • BC: NCEP/NCAR reanalysis • Additional surface temperatures: • Great Lakes observations • Gulf of California satellite retrievals
500 hPa heights: Root Mean Square Difference from Reanalysis1988
500 hPa heights: Root Mean Square Difference from Reanalysis1993
Reanalysis LLJ 00 UTC 06 UTC 12 UTC 18 UTC
MM5 LLJ 00 UTC 06 UTC 12 UTC 18 UTC
Precipitation Regions NW Upper Miss. SE SW
Comparison of PIRCS models with gridded precipitation analysis
Comparison of PIRCS models with gridded precipitation analysis
Precip. Bias June 1988 MM5/BATS Composite [mm/d] -10 -8 -6 -4 -2 0 +2 +4 +6 +8 +10
Precip. Bias July 1993 MM5/BATS Composite [mm/d] -10 -8 -6 -4 -2 0 +2 +4 +6 +8 +10
From Storm Data Reports (9 June 1993) ~ 200 mm • Dawson,Howard,Martin & • Midland Counties • (West Texas): • Flash Floods • Hail • ≤ 6” (150 mm) precip.
FIFE Field Campaign Kansas
Acknowledgments - PIRCS • Primary Funding: Electric Power Research Institute (EPRI) • Guidance/Support: Andrew Staniforth, Eugenia Kalnay, Filippo Giorgi, Roger Pielke, AMIP group • Special Thanks: Participating Modelers
Module 17 MM5: Climate Simulation BREAK