#HEADER# PROJECT=VOCALS PLATFORM=RONALD_H_BROWN FILE_START_TIME=2008 10 20 23 50 FILE_STOP_TIME=2008 11 29 21 02 DATA_TYPE=TIMESERIES-1D VERSION=0 SUBMIT_DATE=19-JUN-2009 SOURCE=Bates, Timothy/NOAA-PMEL/Phone: 206-526-6355 /Address: 7600 Sand Pt. Wy. NE,Seattle,WA 98115 /email: tim.bates@noaa.gov #REMARKS# Data Source Description= Aerosol Chemistry Data, Anions - collected with 2 stage impactors during VOCALS 2008 Time Description= irregular time interval Other= Below Detection Level Indicator = 0 Version 0= Initial version, no comments Contact persons: Tim Bates, tim.bates@noaa.gov; Trish Quinn, patricia.k.quinn@noaa.gov Two-stage multi-jet cascade impactors (Berner et al., 1979) sampling air at <60% RH were used to determine the sub- and supermicrometer concentrations of Cl-, Br-, NO3-, SO4=, methanesulfonate (MSA-), oxalate (Ox-), Na+, NH4+, K+, Mg+2, and Ca+2. Sampling periods ranged from 2 to 23 hours. The RH of the sampled air stream was measured a few inches upstream from the impactor. The 50% aerodynamic cutoff diameters, D50,aero, were 1.1 and 10 um. Submicrometer refers to particles with Daero < 1.1 um at <60% RH and supermicrometer refers to particles with 1.1 um < Daero < 10 um at <60% RH. The impaction stage at the inlet of the impactor was coated with silicone grease to prevent the bounce of larger particles onto the downstream stages. Tedlar films were used as the collection substrate in the impaction stage and a Millipore Fluoropore filter (1.0-um pore size) was used for the backup filter. Films were cleaned in an ultrasonic bath in 10% H2O2 for 30 min, rinsed in distilled, deionized water, and dried in an NH3- and SO2-free glove box. Filters and films were wetted with 1 mL of spectral grade methanol. An additional 5 mLs of distilled deionized water were added to the solution and the substrates were extracted by sonicating for 30 min. The extracts were analyzed by ion chromatography [Quinn et al., 1998]. All handling of the substrates was done in the glove box. Blank levels were determined by loading an impactor with substrates but not drawing any air through it. Non-sea salt sulfate concentrations were calculated from Na+ concentrations and the ratio of sulfate to sodium in seawater. Concentrations are reported as ug/m3 at STP (25C and 1 atm). Values below the detection limit are denoted with a -8888, missing data are denoted with a -9999. Berner et al., Sci. Total Environ., 13, 245 - 261, 1979. Quinn et al., J. Geophys. Res., 105, 6785 - 6805, 2000. #TIME PARAMETERS# year month day hour minute second #PARAMETER# Duration minutes * 0 59 -9999 628 #PARAMETER# DayOfYear DecimalDay * 1 365.9999 -9999 627 #PARAMETER# LAT Deg GPS -90 90 -9999 500 #PARAMETER# LONGT Deg GPS -180 360 -9999 502 #PARAMETER# subMSA ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1956 #PARAMETER# supMSA ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1957 #PARAMETER# subCl ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1944 #PARAMETER# supCl ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1945 #PARAMETER# subBr ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1989 #PARAMETER# supBr ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1990 #PARAMETER# subNO3 ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1947 #PARAMETER# supNO3 ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1948 #PARAMETER# subSO4 ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1950 #PARAMETER# supSO4 ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1951 #PARAMETER# subnssSO4 ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1953 #PARAMETER# supnssSO4 ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1954 #PARAMETER# subOxalate ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1986 #PARAMETER# supOxalate ug/m3 2-stage impactor -- ion chromatographic analysis 0 50 -9999 1987 #DATA 2 HEADINGS# Y M D HR Min Sec Dur DayOfYear LAT LONGT subMSA supMSA subCl supCl subBr supBr subNO3 supNO3 subSO4 supSO4 subnssSO4 supnssSO4 subOxalate subOxlate Y M D HR Min Sec Min DecimalDay Deg Deg ug/m3 ug/m3 ug/m3 ug/m3 ug/m3 ug/m3 ug/m3 ug/m3 ug/m3 ug/m3 ug/m3 ug/m3 ug/m3 ug/m3 2008 10 20 23 50 0 640.0 295.21528 -2.36488 -82.88320 0.07 0.04 0.02 1.67 0 0 0.02 0.3 1.03 0.63 1.01 0.34 0.01 0.02 2008 10 21 12 3 0 329.0 295.61632 -4.14662 -83.45280 0.07 0.03 0 1.55 0 0 0.02 0.5 1.41 0.93 1.4 0.6 0.01 0.02 2008 10 21 23 32 0 658.0 296.20903 -6.59037 -84.24650 0.07 0.03 0.01 2.83 0 0 0.02 0.59 1.29 0.81 1.28 0.32 0 0.04 2008 10 22 11 39 0 615.0 296.69896 -8.58274 -84.76850 0.06 0.02 0.03 3.05 0 0 0.02 0.51 1.04 0.59 1.03 0.09 0.01 0.02 2008 10 22 23 51 0 685.0 297.23160 -11.10578 -84.93000 0.04 0.01 0.05 3.18 0 0 0.02 0.25 0.51 0.47 0.49 0 0.01 0.03 2008 10 23 12 28 0 662.0 297.74931 -13.53380 -85.10650 0.04 0.02 0.06 4.5 0 0 0.02 0.22 0.38 0.65 0.36 0.01 0.01 0 2008 10 24 0 35 0 633.0 298.24410 -15.83746 -85.26600 0.03 0.03 0.09 5.48 0 0 0 0.14 0.35 0.75 0.33 0 0.01 0 2008 10 24 12 16 0 674.0 298.74514 -18.06670 -85.42210 0.02 0.03 0.07 5.84 0 0 0.01 0.1 0.15 0.74 0.14 0 0 0.01 2008 10 25 11 58 0 603.0 299.70799 -19.68455 -85.62000 0.02 0.01 0.04 3.18 0 0 0.01 0.07 0.15 0.42 0.14 0 0 0 2008 10 27 0 4 0 2102.0 301.73264 -19.65405 -85.36550 0.02 0.01 0.03 2.47 0 0 0.01 0.06 0.18 0.38 0.17 0.03 0 0 2008 10 28 12 23 0 1359.0 302.98785 -19.68294 -80.04500 0.04 0.02 0.05 4.58 0 0 0.02 0.24 0.42 0.69 0.4 0.04 0.01 0 2008 10 29 12 11 0 1376.0 303.98542 -19.61193 -75.29960 0.04 0.02 0.06 3.53 0 0 0.02 0.19 0.4 0.46 0.38 0 0.01 0.01 2008 10 30 12 31 0 1351.0 304.99062 -19.66908 -74.83100 0.05 0.02 0.03 3.82 0 0 0.02 0.36 0.61 0.58 0.59 0.02 0.01 0.03 2008 10 31 12 20 0 1368.0 305.98889 -19.59817 -74.79210 0.05 0 0.05 3.98 0 0 0.03 0.32 0.57 0.59 0.54 0.01 0.01 0.02 2008 11 1 12 17 0 1363.0 306.98507 -19.60839 -74.78880 0.03 0.01 0.02 3.22 0 0 0.02 0.37 0.51 0.53 0.49 0.04 0.01 0.04 2008 11 2 13 42 0 1165.0 307.97535 -19.09163 -72.80230 0.08 0.03 0 1.55 0 0 0.01 0.97 2.16 0.74 2.15 0.4 0.02 0 2008 11 10 12 46 0 552.0 315.72361 -19.99965 -72.00060 0.12 0.03 0.01 1.61 0 0 0.02 1 3.32 0.49 3.3 0.14 0.01 0.03 2008 11 11 11 19 0 658.0 316.70000 -19.81496 -75.14450 0.1 0.03 0.06 4.32 0 0 0.03 0.28 0.74 0.64 0.72 0 0.01 0.02 2008 11 12 9 56 0 965.0 317.74896 -19.33445 -75.43160 0.08 0.03 0.02 3.14 0 0 0.03 0.73 1.28 0.59 1.26 0.09 0.03 0.06 2008 11 13 12 8 0 1372.0 318.98194 -19.63174 -75.65440 0.05 0.02 0.04 2.7 0 0 0.03 0.37 0.69 0.49 0.67 0.08 0.02 0.04 2008 11 14 11 31 0 1587.0 320.03090 -19.86520 -75.76970 0.03 0.01 0.01 0.83 0 0 0.02 0.27 0.51 0.21 0.5 0.06 0.01 0.02 2008 11 16 11 52 0 1750.0 322.10208 -19.00112 -79.32090 0.04 0.01 0.01 1.44 0 0 0.02 0.44 0.74 0.26 0.73 0.02 0.01 0.02 2008 11 18 0 20 0 829.0 323.30174 -18.99967 -80.50099 0.04 0.01 0.01 0.9 0 0 0.01 0.29 0.51 0.18 0.5 0.01 0.01 0.02 2008 11 18 23 34 0 663.0 324.21215 -19.00005 -82.48600 0.06 0.02 0.01 1.25 0 0 0.02 0.49 1.2 0.3 1.19 0.06 0.01 0.03 2008 11 19 21 58 0 1393.0 325.39896 -20.00224 -84.66510 0.05 0.02 0.02 2.4 0 0 0.02 0.39 1 0.45 0.99 0.1 0.01 0.04 2008 11 20 23 31 0 1347.0 326.44757 -21.00000 -85.00080 0.06 0.02 0.01 2.31 0 0 0.01 0.35 0.85 0.4 0.84 0.06 0.01 0.03 2008 11 21 23 36 0 1246.0 327.41597 -19.47249 -84.50020 0.05 0.01 0.01 2.05 0 0 0.01 0.19 0.59 0.31 0.59 0 0.01 0.02 2008 11 22 22 11 0 1348.0 328.39236 -20.09198 -84.49990 0.05 0.01 0 2.16 0 0 0.01 0.26 0.72 0.3 0.72 0 0 0 2008 11 23 22 20 0 1331.0 329.39271 -21.00326 -83.49530 0.04 0.02 0.01 2.93 0 0 0.01 0.16 0.57 0.38 0.55 0 0 0 2008 11 24 22 3 0 1361.0 330.39132 -20.99996 -81.81200 0.04 0.02 0.01 3.62 0 0 0.01 0.09 0.55 0.49 0.54 0 0 0.01 2008 11 25 22 13 0 1435.0 331.42396 -21.00020 -80.18030 0.05 0.03 0.01 2.47 0 0 0.01 0.1 0.6 0.36 0.59 0.01 0 0 2008 11 27 16 29 0 1705.0 333.27882 -19.97052 -76.17210 0.05 0.02 0.01 1.08 0 0 0.01 0.16 0.51 0.19 0.5 0.01 0 0.01 2008 11 28 23 52 0 1270.0 334.43542 -21.50010 -73.99990 0.05 0.01 0 1.11 0 0 0.01 0.25 0.9 0.23 0.9 0.04 0.01 0.01