ACE1 Condensation Nuclei data from all the C130 flights have been put together into two composite files, one for raw and one for cleaned up data. The separate flights, which were originally in separate files, are clearly demarked in the composite files by a Start and End message, along with their original file names. The separate files were named consecutively from cn01.raw to cn33.raw, and cn01.ask to cn33.ask. The flight departure and arrival times can be found at the end of this file. ---------------------------------------------------------------------------- The following is an updated readme file for CN data. There is not a lot of changes except mention the CN number concentration (#/cc) are at temperature and pressure of the measurement altitude. They are not at the standard conditions. This is a updated readme file for cleaned CN data in ACE1 from University of Hawaii group. **************************************************************************** These are Condensation Nuclei (CN) data collected by the University of Hawaii group in ACE1. All of the variables are average values for 15 second intervals. There are two data sets. One set is original data and the other is cleaned up data. The files with extension "RAW" are the original ones. The filenames start with CN and are followed by the flight number (e.g. CN07.RAW).In these data files: Column 1 = Time in decimal hours Column 2 = CN [TSI 3025] Total counts (#/cc) for diameter > 3nm Column 3 = CN [TSI 3010, operated with dt=22C] Total counts (#/cc) for diameter > 10nm Column 4 = CN [TSI 3760, aerosol preheated to 300C] Total counts (#/cc) for diameter > 13nm Column 5 = pressure altitude in meters recorded from the C-130 aircraft The all CN number concentration (#/cc) are at temparature and pressure of the measurement altitude. They are not at the standard condition. The cleaned up data files have the extension "ASK" (e.g. CN07.ASK) and the columns are the same as the RAW data files except without the pressure altitude column. A value -999 was put when a datum was not available or was deleted. The polluted data during taking off and landing were deleted. Other reasons for deleting data, such as droplet shatter, aircraft exhaust, instrument problems and so on, are listed below along with the time (in decimal hours). "Hot CN" in the list refers to CN3760 at a temperature of 300C. CN peaks from droplet shatter were edited based upon FSSP liquid water content. However some droplets might exist at times when relative humidity were 70-100% (eg, drizzle below cloud). We edited the data based on all available information. ------------------------------------------------------------------- Flight No. Time(hr) Reason for editing data ------------------------------------------------------------------- Flight-01 16.8-16.9 filter test 17.2-17.7 droplet shatter 18.0-19.0 instrument problems 20.1-22.1 landing and taking off 20.2-20.3 filter test Flight-02 19.3-19.4 filter test 19.2-19.3 No CN3025 available 24.0-24.7 CN3025 flow problems 24.7-24.8 filter test Flight-03 18.4-18.5 filter test 19.9-20.4 flow test 26.8-26.9 CN3025 flow Problem Flight-04 14.6-14.7 filter test 14.5-18.8 Hot CN not available 21.0-21.1 filter test Flight-05 16.3-16.8 Hot CN not available 16.4-16.6 CH 3010 problems 21.6-21.7 droplet shatter 24.6-25.0 droplet shatter Flight-06 17.6-19.5 some droplet shatter 18.1-18.2 switch to University of Minnesota line 20.9-22.4 Hot CN not available 21.2-25.7 leaking in flow system 23.3-25.5 droplet shatter Flight-07 19.9-20.0 filter test 21.8-26.0 many droplet shatter Flight-08 20.4-21.7 droplet shatter 23.7-24.1 Hot CN not available 27.2-27.5 droplet shatter Flight-09 20.0-21.3 Hot CN not available 26.4-26.7 Hot CN not available Flight-10 21.4-21.5 filter test 22.8-23.0 switch to University of Minnesota line 23.2-23.3 CN3025 flow problem 24.0-24.1 CN3025 flow problem Flight-11 -0.5-7.5 CN3025 is not available for the flight -0.5-0.1 switch to University of Minnesota line 0.6-0.7 switch to University of Minnesota line 3.4-3.6 switch to University of Minnesota line 4.0-5.1 droplet shatter Flight-12 -1.5--1.1 Hot CN is not available -0.9--1.0 switch to University of Minnesota line 2.5-3.1 droplet shatter Flight-13 1.1-1.2 filter test 4.5-7.1 rain, droplet shatter Flight-14 2.7-3.1 Hot CN not available Flight-15 1.0-2.1 ship contamination 2.3-3.5 droplet shatter 4.0-5.3 ship contamination 6.9-7.0 filter test Flight-16 -0.7--0.6 filter test 0.3-0.4 CN3025 flow problem 5.1-5.2 filter test Flight-17 -0.4--0.3 filter test 5.2-7.3 droplet shatter Flight-18 16.0-16.1 filter test 16.9-23.0 droplet shatter Flight-19 3.2-3.3 filter test 3.6-3.7 droplet shatter 3.7-3.8 aircraft turning exhaust 5.1-5.9 droplet shatter Flight-20 15.9-16.1 filter test 17.8-20.4 droplet shatter 21.6-21.7 switch to University of Minnesota sample line Flight-21 15.8-15.9 filter test 19.2-20.0 droplet shatter 21.3-21.4 aircraft exhaust Flight-22 3.0-3.2 filter test 4.3-6.9 ship contamination 9.2-9.8 droplet shatter Flight-23 8.4-8.5 filter test 10.9-11.8 droplet shatter 14.7-14.8 droplet shatter 15.9-16.0 droplet shatter Flight-24 22.0-27.6 many aircraft exhaust peaks Flight-25 8.3-8.4 filter test 13.6-13.7 CN3025 flow problem 14.7-14.8 droplet shatter Flight-26 20.6-25.9 droplet shatter Flight-27 20.6-20.7 filter test 22.0-27.2 many times of aircraft exhaust Flight-28 -0.6--0.5 filter test 1.1-6.6 Flight-30 Flight-29 22.3-23.3 instrument problems 23.8-23.9 CN3025 peaks 23.9-24.1 filter test 24.8-25.0 aircraft exhaust 27.6-27.7 CN3025 problems 28.1-28.5 Hot CN not available 28.9-29.1 instrument problem Flight-30 22.0-22.3 instrument prolem, no data 23.0-23.1 filter test 23.1-23.2 flow problem 25.1-27.2 droplet shatter 27.9-28.0 filter test Flight-31 24.5-28.5 CN3010 not available for the flight 24.7-25.9 Hot CN is not available 24.1-24.2 filter test 26.3-28.4 CN3025 flow problem Flight-32 19.7-19.9 filter test 21.1-21.8 droplet shatter 21.1-25.2 CN3025 not available 22.8-23.4 CN3010 flow problems 25.8-26.8 flow problem Flight-33 17.5-24.4 Hot CN not available 18.4-22.0 system leaking, no data 22.6-25.8 some instrument problems --------------------------------------------------------------- ACE-1 C-130 RESEARCH FLIGHTS ---------------------------------------------------------------------------- FLT DEPARTURE (UTC) ARRIVAL (UTC) HRS MISSION REMARKS NO. DATE TIME SITE DATE TIME SITE SCIENTIST ---------------------------------------------------------------------------- R1 10/31 1605 BJC 11/01 0128 PANC 9:13 Huebert Ferry to Alaska R2 11/02 1855 PANC 11/03 0214 PANC 7:19 Huebert Ice Flight (to 75N) R3 11/03 1810 PANC 11/04 0342 PHNL 8:52 Huebert Ferry to Hawaii R4 11/05 1417 PHNL 11/05 2223 PHNL 8:06 Huebert Kilauea Plume Evolution R5 11/06 1555 PHNL 11/07 0107 PHNL 9:12 Clarke Radiative Closure R6 11/08 1637 PHNL 11/09 0121 PLCH 8:44 Lenschow Ferry to Christmas I R7 11/09 1859 PLCH 11/10 0307 NSAP 8:08 Lenschow Ferry to Western Samoa R8 11/10 2026 NSAP 11/11 0458 NZCH 8:32 Lenschow Ferry to New Zealand R9 11/13 1943 NZCH 11/14 0426 NZCH 8:43 Lenschow Southernmost Flight R10 11/14 2052 NZCH 11/15 0114 YMHB 4:22 Lenschow Ferry to Tasmania ---------------------------------------------------------------------------- R11 11/17 2248 YMHB 11/18 0731 YMHB 8:43 Huebert Low Temp Sulfur branching R12 11/18 2225 YMHB 11/19 0721 YMHB 8:56 Lenschow Stratocumulus mission R13 11/23 0024 YMHB 11/23 0907 YMHB 8:43 Huebert Attempted Lagrangian R14 11/23 2302 YMHB 11/24 0744 YMHB 8:42 Clarke Cumulus outflow; Cape Grim comparison; column closure R15 11/24 2250 YMHB 11/25 0749 YMHB 8:59 Lenschow Discoverer intercomparison R16 11/26 2155 YMHB 11/27 0700 YMHB 9:05 Huebert Macquarie Island intercomparison R17 11/27 2252 YMHB 11/28 0822 YMHB 9:30 Clarke Cu cloud particle production R18 12/01 1523 YMHB 12/02 0007 YMHB 8:44 Lenschow/Wang 2nd Lagrangian, Flt 1 R19 12/02 0221 YMHB 12/02 1048 YMHB 8:27 Huebert 2nd Lagrangian, Flt 2 R20 12/02 1518 YMHB 12/02 2357 YMHB 8:39 Wang 2nd Lagrangian, Flt 3 R21 12/04 1521 YMHB 12/05 0023 YMHB 9:02 Wang Sunrise photochemistry in clear air R22 12/05 0232 YMHB 12/05 1119 YMHB 8:47 Huebert Disco Flux Intercomparison R23 12/07 0755 YMHB 12/07 1640 YMHB 8:45 Clarke Post-frontal Characterization (pre-Lagrangian) R24 12/07 1918 YMHB 12/08 0436 YMHB 9:18 Huebert 3rd Lagrangian, Flt 1 R25 12/08 0758 YMHB 12/08 1632 YMHB 8:34 Clarke 3rd Lagrangian, Flt 2 R26 12/08 1920 YMHB 12/09 0427 YMHB 9:07 Huebert 3rd Lagrangian, Flt 3 R27 12/10 2005 YMHB 12/11 0537 YMHB 9:32 Clarke Cumulus Detrainment; Cape Grim comparison R28 12/11 2252 YMHB 12/12 0724 YMHB 8:32 Durkee Stratocumulus Mission; Disco Intercomparison ---------------------------------------------------------------------------- R29 12/15 2054 YMHB 12/16 0534 ABBN 8:40 Russell Ferry To Brisbane; Gas Phase Diurnal cycles over Coral Sea R30 12/17 2120 ABBN 12/18 0417 NFFN 6:57 Russell Ferry To Nadi, Fiji; Free Tropospheric Profiles R31 12/18 1856 NFFN 12/19 0427 PLCH 9:31 Russell Ferry To Christmas Island; Christmas Island Coast measurements (note: crossing date line) R32 12/20 1932 PLCH 12/21 0356 PITO 8:24 Russell Ferry To Hilo, Hawaii; Boundary Layer Structure R33 12/22 1714 PITO 12/23 0309 BJC 9:55 Ferry To Broomfield, CO; ----------------------------------------------------------------------------