INDEX 1 CMAQ PARALLEL vs CMAQ SERIAL 2

INDEX 1. CMAQ PARALLEL vs CMAQ SERIAL. 2. MM 5 PARALLEL vs MM 5 SERIAL. 3. CMAQ SAPRAC vs CMAQ CB 4 4. STEM 3 SAPRAC vs CMAQ SAPRAC RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CGRER CLUSTER (UIOWA) MAIN NODE: Pentium 4 2. 4 Ghz processor / 533 Mhz FSB 4. 0 GB DDR PC 2100 ECC Registered System Memory 340 GB EIDE 7200 RPM Hard Drives 200 GB EIDE 7200 RPM Hard Drives Controller 10/1000 Base. T Gigabit Network Adapter 10/100 Base. T Fast Ethernet Network Redhat Linux 7. 3 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CGRER CLUSTER (UIOWA) 20 NODES: Pentium 4 2. 4 Ghz processor / 533 Mhz FSB 1. 024 GB DDR PC 2100 System Memory 120 GB 7, 200 RPM EIDE Hard Drive 10/1000 Base. T Gigabit Network Adapter Redhat Linux 7. 3 NETWORK: 24 Port 10/1000 Base. T Gigabit Network Switch RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

SOFTWARE MPICH 1. 2. 5 Freely portable implementation of MPI ( Standard for message-passing libraries) PGI COMPILERS 4. 1 -2 CMAQ (Community multiscale air quality modeling system) MM 5 V 3. 6 (PSU/NCAR meteorological mesoscale model) STEM 3 (Air quality model form CGRER) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

MM 5 & CMAQ DOMAINS 23 VERTICAL LAYER MM 5 81 KM: 84*60 MM 5 27 KM: 69*57 MM 5 9 KM: 51*51 MM 5 3 KM: 33*39 CMAQ 9 KM: 45*45 CMAQ 3 KM: 27*33 CMAQ 1 KM: 24*24 MM 5 1 KM: 30*30 SIMULATION DATE: 20 -05 -2002 (5 days) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

MM 5 & CMAQ DOMAINS 84 x 60 MM 5 81 km 69 x 37 MM 5 27 km RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

MM 5 & CMAQ DOMAINS 51 x 51 (MM 5) 9 km 33 x 39 (MM 5) 3 km 30 x 30 (MM 5) 1 km RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

SPLITING DOMAINS 6 NODES DOMAIN 45*45 SPLITING 2*3 COLS 1: 23 24: 45 ROWS 1: 15 16: 30 31: 45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ CPU TIME PARALLEL vs SERIAL CMAQ CLUSTER: CMAQ SERIAL: 9 KM -> 52 Min. 9 KM -> 629 Min. 3 KM -> 40 Min. 3 KM -> 335 Min. 1 KM -> 44 Min. 1 KM -> 356 Min. TOTAL CMAQ 9 -3 -1 -> 2: 16 TOTAL CMAQ 9 -3 -1 -> 22: 00 10 TIMES FASTER CLUSTER 20 NODES & NO DIFFERENCES IN THE OUTPUTS RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

MM 5 CPU TIME PARALLEL vs SERIAL MM 5 CLUSTER: MM 5 SERIAL: 81 -27 KM -> 11 Min. 81 -27 KM -> 155 Min. 9 -3 -1 KM -> 74 Min. 9 -3 -1 KM -> 811 Min. TOTAL MM 5 CLUSTER 81 -27 -9 -3 -1 -> 1: 25 TOTAL MM 5 SERIAL 81 -27 -9 -3 -1 -> 16: 06 11 TIMES FASTER CLUSTER 20 NODES & NO DIFFERENCES IN THE OUTPUTS RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 SOURCE EMISSION SPLITING FACTOR VOC VOC VOC 0, 0149284046 0, 0404184015 0, 0570732203 0, 0655021834 0, 0691581192 0, 1877495684 0, 0975540774 0, 0397699807 0, 0085305169 0, 0074134254 0, 0747435767 0, 0076165330 INPUT EMISSION SAPRAC 99 CMAQ ACET ALK 1 ALK 2 ALK 3 ALK 4 ALK 5 ARO 1 ARO 2 CCHO CCO_OH CH 4 CRES RESULTS FROM CGRER-IOWA 2003 SOURCE EMISSION SPLITING FACTOR VOC VOC VOC 0, 0290443790 0, 0002031075 0, 0157408348 0, 0042652585 0, 0040621509 0, 0078196405 0, 0074337362 0, 0142175282 0, 0002031075 0, 1028739717 0, 0628110084 0, 0298060323 JUAN L. PEREZ INPUT EMISSION SAPRAC 99 CMAQ ETHENE GLY HCHO HCOOH ISOPRENE MACR MEK MEOH MGLY NR OLE 1 OLE 2 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 CMAQ SAPRAC-CB 4 SO 2 (PPB) 120 HOURS AVERAGE 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: 0. 746554 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 CMAQ SAPRAC-CB 4 CO (PPB) 120 HOURS AVERAGE 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: 3. 066200 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 CMAQ SAPRAC-CB 4 PM 10 (PPB) 120 HOURS AVERAGE 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: -3. 134671 (ug/m 3) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 CMAQ SAPRAC-CB 4 NO 2 (PPB) 120 HOURS AVERAGE 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: -2. 108120 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 CMAQ SAPRAC-CB 4 NO (PPB) 120 HOURS AVERAGE 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: -3. 025850 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 CMAQ SAPRAC-CB 4 O 3 (PPB) 120 HOURS AVERAGE 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: 24. 912991 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 CMAQ SAPRAC-CB 4 O 3 (PPB) 9 KM 45*45 16: 00 GMT MAXIMUM HOUR DIFFERENCE: 24. 912991 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 CMAQ SAPRAC & CB 4 O 3 (PPB) SPACIAL AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 MODEL & MONITORING STATIONS LINEAR REGRESSION O 3 R (CB 4) R(SAPRAC) STATION 2: 0. 738 0. 751 STATION 4: 0. 697 0. 742 STATION 14: 0. 757 0. 772 STATION 3: 0. 679 0. 705 STATION 12: 0. 665 0. 726 STATION 17: 0. 746 0. 792 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ SAPRAC vs CMAQ CB 4 CMAQ SAPRAC O 3 (PPB) CMAQ CB 4 O 3 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

CMAQ CPU TIME CB 4 vs SAPRAC CMAQ CB 4: CMAQ SAPRAC: 9 KM -> 52 Min. 9 KM -> 66 Min. 3 KM -> 40 Min. 3 KM -> 52 Min. 1 KM -> 44 Min. 1 KM -> 54 Min. TOTAL CMAQ 9 -3 -1 -> 2: 16 TOTAL CMAQ 9 -3 -1 -> 2: 52 1. 26 %TIME INCREMENT USING SAPRAC 2. SMALL DIFFERENCES IN THE OUTPUTS 3. IMPROVE SLIGHTLY THE OZONE RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC SOURCE EMISSION VOC VOC VOC SPLITING FACTOR 0, 0732 0, 06615 0, 09 0, 1152 0, 17556 0, 0664785 0, 0268158 0, 0434775 0, 091377 0, 065604 INPUT EMISSION SAPRAC 99 STEM 3 C 2 H 6 C 3 H 8 ALK 3 ALK 4 ALK 5 ETHENE OLE 1 OLE 2 ARO 1 ARO 2 RESULTS FROM CGRER-IOWA 2003 SOURCE SPLITING FACTOR EMISSION VOC VOC VOC 0, 00112424 0, 0168168 0, 003475545 0, 00234346 0, 01109328 0, 0100219 0, 019 0, 023 JUAN L. PEREZ INPUT EMISSION SAPRAC 99 STEM 3 CRES HCHO CCHO RCHO ACET MEK ALK 2 C 2 H 2 C 3 H 6 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC 9 KM DOMAIN RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ SO 2 (PPB) 120 HOURS AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ SO 2 (PPB) 8: 00 GMT 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: 17. 077326 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ SO 2 (PPB) SPACIAL AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ CO (PPB) 120 HOURS AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ CO (PPB) 6: 00 GMT 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: -274. 595520 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ CO (PPB) SPACIAL AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO 2 (PPB) 120 HOURS AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO 2 (PPB) 16: 00 GMT 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: -29. 755791 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ NO 2 (PPB) SPACIAL AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO (PPB) 120 HOURS AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO (PPB) 8: 00 GMT 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: 30. 953323 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ NO (PPB) SPACIAL AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ O 3 (PPB) 120 HOURS AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ O 3 (PPB) 21: 00 GMT 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: 50. 891552 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ O 3 (PPB) SPACIAL AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ PM 10 (ug/m 3) 120 HOURS AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ PM 10 (ug/m 3) 8: 00 GMT 9 KM 45*45 MAXIMUM HOUR DIFFERENCE: 230. 202286 (ug/m 3) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ PM 10 (ug/m 3) SPACIAL AVERAGE 9 KM 45*45 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC 3 KM DOMAIN RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ SO 2 (PPB) 120 HOURS AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ SO 2 (PPB) 8: 00 GMT 3 KM 27*33 MAXIMUM HOUR DIFFERENCE: 17. 312181 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ SO 2 (PPB) SPACIAL AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ CO (PPB) 120 HOURS AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ CO (PPB) 8: 00 GMT 3 KM 27*33 MAXIMUM HOUR DIFFERENCE: 473. 776764 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ (PPB) 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ CO (PPB) SPACIAL AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO 2 (PPB) 120 HOURS AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO 2 (PPB) 20: 00 GMT 3 KM 27*33 MAXIMUM HOUR DIFFERENCE: 50. 874371 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ NO 2 (PPB) SPACIAL AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO (PPB) 120 HOURS AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO (PPB) 7: 00 GMT 3 KM 27*33 MAXIMUM HOUR DIFFERENCE: -47. 040100 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ NO (PPB) SPACIAL AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ O 3 (PPB) 120 HOURS AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ O 3 (PPB) 9: 00 GMT 3 KM 27*33 MAXIMUM HOUR DIFFERENCE: -40. 555294 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ O 3 (PPB) SPACIAL AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ PM 10 (ug/m 3) 120 HOURS AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ PM 10 (ug/m 3) 9: 00 GMT 3 KM 27*33 MAXIMUM HOUR DIFFERENCE: 262 (ug/m 3) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ PM 10 (ug/m 3) SPACIAL AVERAGE 3 KM 27*33 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC 1 KM DOMAIN RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ SO 2 (PPB) 120 HOURS AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ SO 2 (PPB) 8: 00 GMT 1 KM 24*24 MAXIMUM HOUR DIFFERENCE: 8. 948084 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ SO 2 (PPB) SPACIAL AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ CO (PPB) 120 HOURS AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ CO (PPB) 21: 00 GMT 1 KM 24*24 MAXIMUM HOUR DIFFERENCE: -201. 021378 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ (PPB) 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ CO (PPB) SPACIAL AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO 2 (PPB) 120 HOURS AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO 2 (PPB) 22: 00 GMT 1 KM 24*24 MAXIMUM HOUR DIFFERENCE: -24. 915375 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ NO 2 (PPB) SPACIAL AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO (PPB) 120 HOURS AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ NO (PPB) 8: 00 GMT 1 KM 24*24 MAXIMUM HOUR DIFFERENCE: 15. 236319 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ NO (PPB) SPACIAL AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ O 3 (PPB) 120 HOURS AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ O 3 (PPB) 20: 00 GMT 1 KM 24*24 MAXIMUM HOUR DIFFERENCE: 36. 230000 (PPB) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ O 3 (PPB) SPACIAL AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ PM 10 (ug/m 3) 120 HOURS AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 -CMAQ PM 10 (ug/m 3) 6: 00 GMT 1 KM 24*24 MAXIMUM HOUR DIFFERENCE: -51. 826294 (ug/m 3) RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 & CMAQ PM 10 (ug/m 3) SPACIAL AVERAGE 1 KM 24*24 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 9 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 9 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 9 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 9 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 9 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 9 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 9 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 9 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 9 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 9 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 9 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 9 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 9 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 9 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 9 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 9 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 9 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 9 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 3 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 3 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 3 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 3 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 3 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 3 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 3 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 3 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 3 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 3 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 3 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 3 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC STEM 3 1 KM RESULTS FROM CGRER-IOWA 2003 - STATION - JUAN L. PEREZ CMAQ 1 KM 25 -9 -2003

STEM 3 SAPRAC vs CMAQ SAPRAC CMAQ 6 NODES: STEM 3 6 NODES: 9 KM -> 12: 30 9 KM -> 2: 45 3 KM -> 12: 00 3 KM -> 1: 35 1 KM -> 23: 00 1 KM -> 1: 48 TOTAL STEM 3 9 -3 -1 -> 47: 00 TOTAL CMAQ 9 -3 -1 -> 6: 08 8 TIMES FASTER CMAQ THAN STEM 3 RESULTS FROM CGRER-IOWA 2003 JUAN L. PEREZ 25 -9 -2003