#HEADER#
PROJECT=ICEALOT
PLATFORM=KNORR
FILE_START_TIME=2008 03 19 23 40
FILE_STOP_TIME=2008 04 23 18 01
DATA_TYPE=TIMESERIES-1D
VERSION=0
SUBMIT_DATE=05-NOV-2008
SOURCE=Quinn, Patricia K/NOAA-PMEL/Phone: 206-526-6892 /Address: 7600 Sand Pt. Wy. NE,Seattle,WA 98115 /email: patricia.k.quinn@noaa.gov
#REMARKS#
Data Source Description= Aerosol Chemistry Data, Anions - collected with 2 stage impactors during ICEALOT 2008 
Time Description= irregular time interval
Other=
Below Detection Level Indicator = 0 
Version 0= Initial version, no comments
Aerosol Ion Chemistry Data 
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 <25% 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 <25% RH and supermicrometer refers to particles with 1.1 um < Daero < 10 um at <25% 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	3	19	23	40	45	666.5	80.21806	41.10968	-73.16056	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999
2008	3	20	12	48	32	520.0	80.71428	40.99812	-73.45270	0.000	0.000	0.093	0.470	0.000	0.000	0.015	0.013	1.192	0.087	1.169	0.000	0.000	0.000
2008	3	21	1	25	0	562.0	81.25417	40.98068	-73.33315	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999
2008	3	21	13	29	0	311.0	81.66979	41.02867	-73.31842	0.000	0.000	0.112	0.263	0.000	0.000	0.073	0.029	1.712	0.040	1.674	0.000	0.008	0.008
2008	3	22	18	47	0	956.0	83.11458	42.39382	-65.44318	0.000	0.000	0.407	4.908	0.002	0.011	0.069	0.275	0.802	0.619	0.720	0.000	0.006	0.006
2008	3	23	12	40	0	530.0	83.71181	43.03574	-61.50759	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999	-9999
2008	3	24	12	33	0	539.0	84.71007	44.03978	-54.82848	0.000	0.000	0.395	4.017	0.000	0.000	0.058	0.273	0.491	0.498	0.413	0.000	0.005	0.005
2008	3	24	22	59	0	609.0	85.16910	44.41953	-51.76214	0.017	0.000	0.910	6.223	0.000	0.000	0.061	0.322	1.267	0.823	1.104	0.000	0.013	0.013
2008	3	25	10	40	0	588.0	85.64861	44.81162	-48.88311	0.005	0.000	0.808	3.552	0.000	0.008	0.040	0.055	0.567	0.393	0.421	0.000	0.005	0.005
2008	3	25	21	47	0	1372.0	86.38403	46.49441	-44.67231	0.000	0.000	0.581	4.943	0.002	0.014	0.020	0.013	0.100	0.566	0.000	0.000	0.001	0.001
2008	3	26	21	53	0	1237.0	87.34132	48.98467	-40.37952	0.002	0.000	0.433	4.036	0.001	0.009	0.014	0.030	0.344	0.489	0.277	0.000	0.002	0.002
2008	3	27	19	55	0	1301.0	88.28160	51.91118	-35.43904	0.000	0.000	0.494	5.053	0.002	0.012	0.022	0.065	0.817	0.586	0.731	0.000	0.005	0.005
2008	3	28	19	1	0	1314.0	89.24861	54.93598	-29.88145	0.002	0.000	1.038	9.332	0.000	0.025	0.027	0.026	0.261	1.335	0.095	0.000	0.000	0.000
2008	3	29	18	16	0	1317.0	90.21840	56.88369	-26.17340	0.007	0.000	0.636	4.174	0.000	0.010	0.031	0.055	0.420	0.435	0.314	0.000	0.004	0.004
2008	3	30	17	32	0	1399.0	91.21632	59.92114	-19.81546	0.009	0.000	0.372	2.536	0.000	0.000	0.022	0.058	0.252	0.322	0.176	0.000	0.002	0.002
2008	3	31	18	7	0	1305.0	92.20799	62.24533	-14.51065	0.004	0.000	0.816	7.548	0.003	0.020	0.021	0.042	0.412	0.826	0.281	0.000	0.002	0.002
2008	4	1	17	10	0	1375.0	93.19271	63.57591	-11.33008	0.008	0.000	0.694	6.584	0.002	0.015	0.017	0.047	0.813	0.753	0.692	0.000	0.004	0.004
2008	4	2	17	55	0	783.0	94.01840	65.09546	-5.35086	0.011	0.000	0.612	6.448	0.002	0.017	0.018	0.057	0.575	0.708	0.467	0.000	0.006	0.006
2008	4	3	8	8	0	571.0	94.53715	66.40592	-0.58061	0.019	0.000	0.397	2.105	0.000	0.004	0.022	0.050	0.521	0.259	0.445	0.000	0.005	0.005
2008	4	3	18	46	0	707.0	95.02743	67.46493	4.27528	0.015	0.000	0.222	1.845	0.000	0.005	0.014	0.051	0.427	0.223	0.381	0.000	0.003	0.003
2008	4	4	7	51	0	581.0	95.52882	68.44750	9.00379	0.018	0.000	0.383	3.067	0.000	0.007	0.038	0.181	0.751	0.363	0.675	0.000	0.005	0.005
2008	4	4	18	46	0	710.0	96.02847	69.53576	14.40346	0.014	0.000	0.428	3.307	0.000	0.008	0.037	0.177	1.219	0.412	1.127	0.000	0.009	0.009
2008	4	5	7	57	0	568.0	96.52847	70.41009	17.27277	0.006	0.000	0.610	4.866	0.000	0.014	0.033	0.157	1.278	0.569	1.207	0.166	0.015	0.015
2008	4	5	18	31	0	738.0	97.02778	70.53609	18.41663	0.002	0.000	0.924	4.897	0.005	0.013	0.018	0.020	0.670	0.576	0.517	0.000	0.006	0.006
2008	4	6	8	49	18	512.7	97.54559	70.49917	18.99966	0.002	0.000	0.381	3.285	0.005	0.008	0.009	0.015	0.878	0.399	0.794	0.000	0.007	0.007
2008	4	6	18	42	17	662.2	98.00931	70.86470	22.32839	0.001	0.000	0.523	2.053	0.000	0.005	0.010	0.011	0.401	0.239	0.308	0.000	0.000	0.000
2008	4	7	7	57	0	575.0	98.53090	71.23110	25.12695	0.012	0.001	0.000	0.000	0.269	0.838	0.015	0.015	0.558	0.108	0.508	0.000	0.007	0.007
2008	4	7	18	45	0	647.0	99.00590	71.23974	28.26154	0.014	0.000	0.218	1.108	0.000	0.016	0.032	0.049	1.569	0.156	1.510	0.000	0.010	0.010
2008	4	8	6	55	0	580.0	99.48958	70.36384	31.45766	0.010	0.000	0.184	1.041	0.000	0.000	0.052	0.065	1.303	0.129	1.261	0.000	0.026	0.026
2008	4	8	17	59	0	567.0	99.94618	69.92410	30.32826	0.012	0.000	0.272	1.933	0.000	0.000	0.059	0.137	1.303	0.289	1.239	0.000	0.022	0.022
2008	4	9	7	18	0	426.0	100.45208	70.97033	29.67792	0.003	0.000	0.559	1.521	0.006	0.005	0.029	0.014	1.662	0.223	1.537	0.000	0.012	0.012
2008	4	9	19	33	0	600.0	101.02292	70.87863	21.40424	0.011	0.000	0.442	1.417	0.000	0.000	0.035	0.016	1.512	0.206	1.413	0.000	0.021	0.021
2008	4	10	7	29	0	342.0	101.43056	70.27090	17.64024	0.013	0.000	0.390	1.166	0.000	0.000	0.029	0.020	1.382	0.170	1.289	0.000	0.012	0.012
2008	4	11	7	28	0	547.0	102.50104	70.80998	20.77659	0.026	0.003	0.102	0.230	0.000	0.000	0.084	0.122	1.401	0.079	1.373	0.034	0.014	0.014
2008	4	13	17	49	0	706.0	104.98750	72.27239	16.50654	0.020	0.000	0.046	0.107	0.000	0.000	0.027	0.049	1.218	0.072	1.207	0.048	0.008	0.008
2008	4	14	6	40	0	604.0	105.48750	74.54748	12.62466	0.006	0.000	0.150	0.282	0.000	0.000	0.038	0.039	0.894	0.069	0.863	0.016	0.005	0.005
2008	4	14	17	45	0	734.0	105.99444	76.76653	9.85129	0.007	0.000	0.331	1.457	0.002	0.000	0.024	0.024	0.680	0.174	0.615	0.000	0.004	0.004
2008	4	15	7	12	0	562.0	106.49514	79.03885	8.82781	0.004	0.000	0.179	1.064	0.000	0.000	0.024	0.023	0.819	0.145	0.782	0.000	0.007	0.007
2008	4	15	17	39	0	725.5	106.98733	80.20908	11.08882	0.004	0.000	0.092	0.205	0.003	0.000	0.043	0.018	1.146	0.046	1.113	0.008	0.011	0.011
2008	4	16	6	59	0	574.0	107.49028	80.09409	11.24362	0.000	0.000	0.001	0.000	0.000	0.000	0.000	0.000	0.336	0.007	0.344	0.025	0.000	0.000
2008	4	16	21	38	0	543.0	108.08993	79.03014	11.37904	0.013	0.000	0.357	0.611	0.004	0.000	0.050	0.024	1.109	0.093	1.034	0.000	0.017	0.017
2008	4	17	7	58	0	596.0	108.53889	79.02975	11.38919	0.008	0.000	0.329	1.122	0.003	0.000	0.036	0.039	1.213	0.114	1.138	0.000	0.009	0.009
2008	4	17	19	0	0	697.0	109.03368	78.16183	4.20082	0.010	0.000	0.412	1.789	0.003	0.003	0.040	0.055	0.995	0.156	0.914	0.000	0.011	0.011
2008	4	18	15	42	0	896.0	109.96528	76.34704	-2.42478	0.009	0.000	0.245	0.171	0.000	0.000	0.077	0.032	1.023	0.048	0.968	0.015	0.013	0.013
2008	4	19	7	39	0	598.0	110.52639	75.65462	-2.89311	0.011	0.000	0.055	0.086	0.002	0.000	0.049	0.048	0.858	0.041	0.842	0.018	0.011	0.011
2008	4	19	18	39	0	831.0	111.06563	73.56340	-6.81856	0.006	0.000	0.073	0.613	0.000	0.000	0.010	0.026	0.224	0.096	0.209	0.005	0.003	0.003
2008	4	20	10	21	0	436.0	111.58264	70.95467	-7.80474	0.010	0.000	0.147	0.314	0.000	0.000	0.021	0.026	0.295	0.055	0.272	0.003	0.006	0.006
2008	4	20	18	38	0	723.0	112.02743	70.23685	-13.39988	0.008	0.000	0.044	0.037	0.000	0.000	0.020	0.015	0.224	0.013	0.215	0.006	0.005	0.005
2008	4	21	7	44	0	585.0	112.52535	69.88191	-16.26266	0.006	0.000	0.066	0.019	0.000	0.000	0.015	0.012	0.202	0.013	0.192	0.013	0.005	0.005
2008	4	21	18	35	0	726.0	113.02639	67.95429	-14.17951	0.034	0.002	0.681	4.944	0.000	0.004	0.064	0.668	1.618	0.661	1.495	0.000	0.021	0.021
2008	4	22	8	3	0	577.0	113.53576	65.58756	-12.62950	0.021	0.002	0.330	3.987	0.000	0.000	0.028	0.168	0.311	0.483	0.249	0.000	0.006	0.006
2008	4	23	12	35	0	326.0	114.63750	63.23890	-20.59021	0.095	0.002	0.487	12.045	0.000	0.024	0.192	1.538	1.805	1.337	1.685	0.000	0.000	0.000