Project Minerva Workshop COLA at George Mason University 16-17 September 2013.

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Presentation transcript:

Project Minerva Workshop COLA at George Mason University September 2013

Minerva Workshop September 2013 – Jim Kinter Welcome!

Minerva Workshop September 2013 – Jim Kinter COLA News

Minerva Workshop September 2013 – Jim Kinter GMU Ph.D. Program in Climate Dynamics Affiliated with the Department of Atmospheric, Oceanic, and Earth Sciences Faculty T. DelSole; Ph.D., Harvard Univ. P. Dirmeyer; Ph.D., Univ. of Maryland B. Huang; Ph.D., Univ. of Maryland V. Krishnamurthy; Ph.D., M.I.T. J. Kinter; Ph.D., Princeton Univ. B. Klinger; Ph.D., M.I.T./Woods Hole Ocean. Inst. E. Schneider; Ph.D., Harvard Univ. P. Schopf; Ph.D., Princeton Univ. J. Shukla (director); Ph.D., B.H.U.; Sc.D., M.I.T C. Stan; Ph.D., Colorado State Univ. D. Straus (chair, AOES); Ph.D., Cornell Univ.

Minerva Workshop September 2013 – Jim Kinter Project Minerva Explore the impact of increased atmospheric resolution on model fidelity and prediction skill in a coupled, seamless framework by using a state-of- the-art coupled operational long-range prediction system to systematically evaluate the prediction skill and reliability of a robust set of hindcast ensembles at low, medium and high atmospheric resolutions NCAR Advanced Scientific Discovery Program to inaugurate Yellowstone (72 K-core IBM iDataPlex) Allocated 21 M core-hours on Yellowstone Used ~28 M core-hours (Our jobs squeaked in under core size that “broke” the system) Many thanks to NCAR for resources and sustained support!

Minerva Workshop September 2013 – Jim Kinter Project Minerva ECMWF team: Frederic Vitart, lead Roberto Buizza Erland Kallen Franco Molteni Tim Stockdale Peter Towers Nils Wedi COLA team: Ben Cash, lead Rondro Barimalala Paul Dirmeyer Mike Fennessy V. Krishnamurthy Julia Manganello David Straus University of Oxford: Tim Palmer Andrew Dawson Many thanks to ECMWF for code and sustained collaboration!

Minerva Workshop September 2013 – Jim Kinter System Atmosphere model cycle Atmosphere spectral truncation Atmosphere vertical levelsOcean model Ocean horizontal res, equatorial refinement Ocean vertical levels MINERVAIFS cy 38r1 T319 / T639 / T levels, top = 1 Pa NEMO v 3.0/3.1 1 degree, ~ 0.3 deg. Lat 42 levels System 4IFS cy 36r4T levels, top = 1 Pa NEMO v 3.0/3.1 1 degree, ~ 0.3 deg. Lat 42 levels ENS (current) IFS cy 38r2 T639 (d 0-10), T levels, top = 5 hPa NEMO v 3.0/3.1 1 degree, ~ 0.3 deg. Lat 42 levels ENS (end 2013) IFS cy 40r1 T639 (d 0-10), T levels, top = 1 Pa NEMO v degree, ~ 0.3 deg. Lat 42 levels ECMWF Coupled Ensemble Systems Courtesy Franco Molteni & Frederic Vitart, ECMWF System 4: Operational seasonal prediction system ENS: Operational medium-range/monthly prediction system

Minerva Workshop September 2013 – Jim Kinter SystemCoupler Time range of ocean- atmosphere coupling Coupling frequency Unperturbed initial cond. for re- forecasts Atmospheric perturbations Ocean perturbations Stochastic model perturbations MINERVAOASIS-3from start3 hours ERA-Interim + ORA-S4 SV, EDA from 2011 dates 5 ocean analyses + SST perturbations 3-timescale SPPT + KE backscatter System 4OASIS-3from start3 hours ERA-Interim + ORA-S4 SV 5 ocean analyses + SST perturbations 3-timescale SPPT + KE backscatter ENS (current) OASIS-3from day 103 hours ERA-Interim + ORA-S4 SV, EDA from current or recent date generated by ENS member fluxes during day 1 to 10 2-timescale SPPT + KE backscatter ENS (end 2013) sequential, single executable from start3 hours ERA-Interim + ORA-S4 SV, EDA from current or recent date 5 ocean analyses 2-timescale SPPT + KE backscatter ORA-S4 : Ocean Re-Analysis for ECMWF System-4EDA : Ensemble of Data Assimilations (low-res 4D-var) SV : Singular Vectors of 48-hour linear propagatorSPPT : Stochastic Perturbation of Physical Tendencies scheme Courtesy Franco Molteni & Frederic Vitart, ECMWF ECMWF Coupled Ensemble Systems

Minerva Workshop September 2013 – Jim Kinter Minerva Prediction Experiments ExperimentYears Ens. Size Initial Months Duration (mon) T319_base May, Nov7 T319_2_year_extension May24 T639_base May, Nov7 T639_extended_ensemble May, Nov May: 5 mo Nov: 4 mo T639_2_year_extension Nov24 T1279_base May7

Minerva Workshop September 2013 – Jim Kinter Minerva: Coupled Prediction of Tropical Cyclones June 2005 hurricane off west coast of Mexico: precipitation in mm/day every 3 hours (T1279 coupled forecast initialized on 1 May 2005) The predicted maximum rainfall rate reaches 725 mm/day (30 mm/hr) Based TRMM global TC rainfall observations ( ), the frequency of rainfall rates exceeding 30 mm/hr is roughly 1%

Minerva Workshop September 2013 – Jim Kinter Minerva vs. Athena NH TC Frequency JJASON; T Year Mean ( ) OBS49.9 Athena59.1 Minerva48.9 (all members) Athena Minerva IBTrACS

Minerva Workshop September 2013 – Jim Kinter Individual Forecast Anomalies IC: 01 May 2013 Ens: 2 members May Mean MAY 2013 Precipitation Soil Wetness

Minerva Workshop September 2013 – Jim Kinter Individual Forecast Anomalies IC: 01 May 2013 Ens: 2 members May-July Mean MAY-JULY 2013 Precipitation Soil Wetness

Hendrik Goltzius Dutch 1611 Frans Hals Museum Haarlem, NL