Table 2. ICARTT Cloud Characteristics for the Flights Considered in This Study Flight (Cloud) Number Flight Date w+, ms-1 sigma+, ms-1 Observed Nd, cm-3 (+/-st.dev%) Predicted Nd, cm-3 Parcel Model (Parameterization) Originating Air Massa (Cloud Type) Mission Description Wind Direction IC3 (1) 6 Aug 1.67 0.868 1086 (15.9) 1046 (1066) clean (cumulus) Conesville PPb N IC3 (2) 6 Aug 0.39 1.732 354 (45.6) 321 (356) clean (stratocu) Conesville PPb N IC3 (3) 6 Aug 1.89 0.750 825 (44.5) 1109 (1116) clean (cumulus) Conesville PPb N IC3 (4) 6 Aug 1.18 0.619 828 (27.0) 980 (943) clean (cumulus) Conesville PPb N IC5 (1) 9 Aug 0.69 0.407 1293 (9) 1607 (1420) polluted (cumulus) Conesville PPb W-SW IC5 (2) 9 Aug 0.28 0.209 1160 (17) 1147 (1224) polluted (stratocu) Conesville PPb W-SW IC5 (3) 9 Aug 0.59 0.528 1045 (37.8) 1223 (1281) polluted (cumulus) Conesville PPb W-SW IC6 (1) 10 Aug 0.69 0.430 695 (14.7) 744 (813) polluted (stratocu) Monroe PPb W-SW IC6 (2) 10 Aug 0.35 0.283 415 (50.1) 508 (577) polluted (stratus) Monroe PPb NW-SW IC6 (3) 10 Aug 0.44 0.303 668 (28.4) 555 (636) polluted (stratus) Monroe PPb NW-SW IC6 (4) 10 Aug 0.69 0.375 808 (25.6) 745 (809) polluted (stratocu) Monroe PPb NW-SW IC6 (5) 10 Aug 0.57 0.477 700 (47.8) 649 (730) polluted (stratocu) Monroe PPb NW-SW IC6 (6) 10 Aug 1.07 0.819 1075 (15.7) 1008 (1073) polluted (stratocu) Monroe PPb NW-SW IC9 (1) 16 Aug 0.59 0.360 1012 (31.9) 1000 (1089) clean (stratocu) SW of Cleveland NW-SW IC9 (2) 16 Aug 0.17 0.131 540 (36) 487 (455) clean (stratus) SW of Cleveland NE-N IC9 (3) 16 Aug 0.15 0.170 524 (48.5) 413 (392) clean (stratus) SW of Cleveland NE-N IC9 (4) 16 Aug 0.72 0.727 1229 (8.7) 1507 (1384) clean (stratocu) SW of Cleveland NE-N IC10 (1) 17 Aug 0.69 0.401 1258 (6) 1306 (1367) polluted (cumulus) SW of Cleveland NE-N IC10 (2) 17 Aug 0.47 0.228 1040 (19.6) 1309 (1060) polluted (stratocu) SW of Cleveland S-SW IC10 (3) 17 Aug 0.17 0.212 811 (20.4) 718 (495) polluted (stratocu) SW of Cleveland S-SW IC11 (1) 18 Aug 0.35 0.313 963 (14.1) 803 (780) polluted (stratocu) SW of Ontario S-SW IC11 (2) 18 Aug 0.54 0.621 954 (32.1) 1056 (1054) polluted (stratocu) SW of Ontario S-SW IC11 (3) 18 Aug 0.62 0.428 965 (13.1) 1145 (1153) polluted (stratocu) SW of Ontario S-SW IC11 (4) 18 Aug 0.56 0.239 1141 (18.6) 1060 (1080) polluted (stratocu) SW of Ontario S-SW IC12 (1) 21 Aug 0.55 0.823 1314 (24.3) 1269 (1265) polluted (cumulus) Conesville PPb S-SW IC12 (2) 21 Aug 0.38 0.250 1016 (32.1) 783 (766) polluted (stratocu) Conesville PPb NW-SW IC12 (3) 21 Aug 0.12 0.134 322 (11.1) 287 (296) polluted (stratocu) Conesville PPb N aSee section 3.1 for characteristics of air mass types. bRead "PP" as "power plant."