CAPS Storm-Scale Ensemble Forecast for the NOAA Hazardous Weather Testbed (HWT) Spring Experiment
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1 CAPS Storm-Scale Ensemble Forecast for the NOAA Hazardous Weather Testbed (HWT) Spring Experiment Fanyou Kong, Ming Xue, Kevin W. Thomas, Yunheng Wang, Keith Brewster, Xuguang Wang (Center for Analysis and Prediction of Storms/U. of Oklahoma) Steven J. Weiss, Israel Jirak, Chris Melick, Jimmy Correia Jr. (NOAA/SPC) Adam Clark, John Kain, M. C. Coniglio, Patrick Marsh (NOAA/NSSL) In collaboration with: SPC, NSSL, NICS, NESDIS, CIRA, CIMSS WSN12, August 6-10, 2012, Rio de Janeiro
2 Outline CAPS SSEF History 2012 configuration highlight Example product QPF verification Simulated synthetic GOES brightness temperature (BT) products
3 CAPS SSEF history Member Domain 2/3 3/4 3/4 Full Full Full (grid CONUS CONUS CONUS CONUS CONUS CONUS spacing) (4 km) (4 km) (4 km) (4 km) (4 km) (4 km) Forecast 33 h 30 h 30 h 30 h 36 h 36 h NWP Model Radar DA WRF- ARW (v2.2) No radar WRF- ARW (v2.2) Radial wind & reflectivity ARW, NMM (v ) ARPS Radial wind & reflectivity ARW, NMM (v3.1.1) ARPS Radial wind & reflectivity ARW, NMM (v3.2.1) ARPS Radial wind & reflectivity Funded primarily by the NOAA CSTAR program, and leveraged by other NSF, NOAA and ONR grants ARW, NMM (v3.3.1) ARPS, COAMPS Radial Wind & reflectivity
4 Major changes from 2011 WRF version is used for 2012 season. (ARPS v5.3) Total 28 SSEF members (4 km grid spacing) at 0000 UTC, running on Kraken at NICS Added 3 COAMPS members, including one with the new 2-moment Milbrandt-Yau microphysics CAPS just added into COAMPS Upgraded CI and Lightning Threat algorithm (in ARW members) Native reflectivity algorithm from each microphysics scheme Synthetic GOES satellite IR radiance and BTs (a grant from GOES-R Proving Ground program) A 5-member sub-ensemble with WRF-ARW newly available stochastic kinetic energy backscatter (SKEB) perturbation (Berner et al. 2011) A new 1200 UTC initiated SSEF (15-member), running on local computer system (new OSCER Boomer unable to fulfill due to hardware not fully in place)
5 2012 CAPS SSEF highlight 28 ensemble members (4-km grid spacing) 23 WRF-ARW members (with a parallel 5- member with SKEB) 1 WRF-NMM members 1 ARPS member 3 COAMPS member (experimental) 36h forecast, starting 00 UTC Mon-Fri Run on NICS Kraken (using 9000 cores, 7h) April 23 June 8 (HWT: May 7 - June 8)
6 2012 Spring Experiment Domains NMM 790x999 3DVAR 1200x780 ARW, ARPS, COAMPS & verification 1160x vertical levels
7 2012 ARW member configuration (23) Member IC BC Radar data Microphy LSM PBL arw_cn 00Z ARPSa 00Z NAMf yes Thompson Noah MYJ arw_c0 (18h) 00Z ARPSa 00Z NAMf no Thompson Noah MYJ arw_m3 arw_cn + em-p1_pert 21Z SREF em-p1 yes Morrison RUC YSU arw_m4 arw_cn + nmm-n2_pert 21Z SREF nmm-n2 yes Morrison Noah MYJ arw_m5 arw_cn + em-n2_pert 21Z SREF em-n2 yes Thompson Noah ACM2 arw_m6 arw_cn + rsm-n2_pert 21Z SREF rsm-n2 yes M-Y RUC ACM2 arw_m7 arw_cn + nmm-p1_pert 21Z SREF nmm-p1 yes WDM6 Noah MYNN arw_m8 arw_cn + rsm-p1_pert 21Z SREF rsm-p1 yes WDM6 RUC MYJ arw_m9 arw_cn + etakf-p1_pert 21Z SREF etakf-p1 yes M-Y RUC YSU arw_m10 arw_cn + etakf-n1_pert 21Z SREF etakf-n1 yes WDM6 Noah QNSE arw_m11 arw_cn + etabmj-p1_pert 21Z SREF etabmj-p1 yes M-Y Noah MYNN arw_m12 00Z ARPSa 00Z NAMf yes Thompson Noah MYNN arw_m13 00Z ARPSa 00Z NAMf yes Thompson Noah ACM2 arw_m14 00Z ARPSa 00Z NAMf yes M-Y Noah MYJ arw_m15 00Z ARPSa 00Z NAMf yes Morrison Noah MYJ arw_m16 00Z ARPSa 00Z NAMf yes WDM6 Noah MYJ arw_m17 00Z ARPSa 00Z NAMf yes Thompson Noah QNSE arw_m18 00Z ARPSa 00Z NAMf yes Thompson Noah YSU arw_m19* 00Z ARPSa 00Z NAMf yes Thompson Noah MYJ arw_m20* arw_cn + em-p1_pert 21Z SREF em-p1 yes Morrison RUC YSU arw_m21* arw_cn rsm-n2_pert 21Z SREF rsm-n2 yes M-Y RUC ACM2 arw_m22* arw_cn + rsm-p1_pert 21Z SREF rsm-p1 yes WDM6 RUC MYJ arw_m23* arw_cn + etakf-n1_pert 21Z SREF etakf-n1 yes WDM6 Noah QNSE For all ARW members: ra_lw_physics= RRTM; ra_sw_physics=goddard; cu_physics=none SKEB
8 member IC BC 2012 NMM member configuration (1) For all NMM members: pbl_physics=myj; cu_physics=none Radar data mp_phy lw_phy sw-phy sf_phy nmm_cn 00Z ARPSa 00Z NAMf yes Ferrier GFDL GFDL Noah 2012 ARPS member configuration (1) member IC BC Radar data Microphy. radiation sf_phy arps_cn 00Z ARPSa 00Z NAMf yes Lin Chou/Suarez Force-restore For all ARPS members: no cumulus parameterization 2012 COAMPS member configuration (3) member IC BC Radar data Microphy. radiation sf_phy cmps_cn 00Z ARPSa 00Z NAMf yes Hobbs-Rutledge - - cmps_c1 00Z ARPSa 00Z NAMf yes M-Y - - cmps_c0 00Z NAMa 00Z NAMf no Hobbs-Rutledge - - Members in red contribute to the 12-member baseline ensemble for post-processing
9 CAPS SSEF product page Probability matched mean hourly precipitation Spaghetti of cref = 35 dbz (May 30, 2012)
10 Example products of 24-h forecast (valid 24 UTC 5/30/2012) Observation Ensemble max 1-h precipit. Max sfc-400 hpa updraft N-prob cref >= 40 dbz
11 QPF verification
12 0.01 inch ETS for 3-h accumulated precipitation (2011data) 0.1 inch 0.5 inch
13 SSEF, NAM, SREF comparison (2010 data) ARW_C0: no radar data ARW_CN: with radar SSEF_PM (4km) outperforms NAM and SREF ARW_CN (4km) outperforms NAM and SREF, except in light rain threshold where SREF_PM has higher ETS beyond 18 h Radar impact 0-30 h
14 ROC: SSEF vs SREF ROC of 3-h PQPF 0.5 inch at 24 h ROC scores of 3-h PQPF 0.5 inch
15 ETS of 3-h accumulated precipitation -- microphysics impact 0.01 in 0.1 in 0.5 in
16 ETS of 3-h accumulated precipitation -- PBL scheme impact 0.01 in 0.1 in 0.5 in
17 Synthetic satellite IR imagery Funded by GOES-R Research (R3) Program Three radiative transfer models (RTMs) CRTM, CIRA RTM, CIMSS RTM Support various sensors, e.g., GOES-R IR imagers Programmed into CAPS post-processing module Run in realtime using MPI with direct reading of tiled (split) NWP model output Apply to all members, with brightness temperature (BT) ensemble probability generated
18 CRTM synthetic GOES-R IR imagery 4/27/2011 case (25 h forecast) reflectivity
19 Simulated GOES µm BT products (24 h forecast valid 5/1/ UTC) ARW_CN MEAN Probability BT -32C Probability BT -52C
20 Probability of 10.7 µm BT -32C (TS Beryl UTC May 27 initiation)
21 Simulated GOES µm BT products (24 h forecast valid 6/7/ UTC) Thompson Milbrandt-Yau Morrison WDM6
22 Thanks!
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