---
instrument_id: '533'
data_file_original_name: 'E5_AMS.csv'
skip_headers: '1'
charts: ''
headers:
    - 'tlocal_AMS'
    - 'SiSOA_ugm3'
    - 'mz325_ugm3'
    - 'mz327_ugm3'
    - 'C3H9Si_ugm3'
    - 'CHO_ugm3'
    - 'CH2o_ugm3'
    - 'CH3_ugm3'
    - 'NH4_ugm3'
    - 'SO4_ugm3'
dataset_id: '4565'
experiment_link: 'https://icarus.ucdavis.edu/chambers/569/experiments/932'
experiment_set_link: 'https://icarus.ucdavis.edu/chambers/569/experimentSets/270'
chamber_link: 'https://icarus.ucdavis.edu/chambers/569'
dataset_created_at: '2025-05-29 15:46:39'
dataset_updated_at: '2025-05-29 15:46:39'
instrument_link: 'https://icarus.ucdavis.edu/chambers/569/instruments/533'
instrument:
    id: '533'
    short_name: 'HR-AMS'
    full_name: 'High-Resolution Aerosol Mass Spectrometer'
    manufacturer: 'Aerodyne Research, Inc'
    model: 'HToF'
    year: '2007'
    data_recording_software: 'Aerodyne AMS DAQ v4.11 to 5.0.8.12'
    data_analysis_software: 'Latest Squirrel/Pika analysis package in Igor. http://cires1.colorado.edu/jimenez-group/ToFAMSResources/ToFSoftware'
    raw_data_time_resolution: '10 s to 2 minutes for ?GenAlt? and 1 Hz for ?Fast MS?'
    analysis_data_averaging: '5 min'
    detection_limit: 'OA (22 ng/m3), sulfate (5 ng/m3), nitrate (3 ng/m3), ammonium (38 ng/m3), chloride (12 ng/m3) for 1-minute averages.'
    quantification_limit: ''
    sensitivity_to_temperature: 'little and not relevant to laboratory sampling'
    sensitivity_to_relative_humidity: 'None'
    sampling_method: '1.57 lpm pulled from chamber through ¼? OD Stainless Steel or copper tubing (3-6 m long) to instrument outside of temperature-controlled chamber enclosure. Dried with nafion drier during humid experiments. ~0.1 lpm sampled into instrument.'
    sample_preparation_method: 'None'
    sample_residence_time_in_seconds: ''
    length_of_tubing_in_cm: '385'
    flow_rate: '0.1 lpm'
    tubing_material: 'Stainless Steel'
    chemical_identification_method: 'High resolution peak fitting for species <100 m/z. Isotopic patterns used to identify silicon-containing species.'
    data_analysis_method: 'Squirrel/Pika analysis package in Igor. http://cires1.colorado.edu/jimenez-group/ToFAMSResources/ToFSoftware'
    quantification_method: 'Standard Squirrel/Pika analysis methods. http://cires1.colorado.edu/jimenez-group/wiki/index.php/ToF-AMS_Main#Data_Analysis_Resources'
    calibration_method: 'Overall sensitivity calibrated with monodisperse 300-400 nm dry ammonium nitrate particles size-selected with a DMA. Typically ?event trigger? or ?BFSP? method used while also running ?MS mode? and ?PToF mode?. Sometimes cross-checked with ?CPC method?. Relative ionizations efficiencies (RIE) for ammonium and sulfate are calibrated with ammonium nitrate and ammonium sulfate particles (in ?MS mode?). Particle time-of-flight (particle sizing) is calibrated with PSLs and size-selected ammonium nitrate for ~50-800 nm. See more details at: http://cires1.colorado.edu/jimenez-group/wiki/index.php/ToF-AMS_Main#Data_Analysis_Resources'
    calibration_drift_estimate: 'Medium (on the order of days)'
    calibration_schedule: 'Every chamber experiment or every 3-5 days for intensive multi-day experiment series.'
    uncertainty_estimation_method: 'Bahrein et al. (JGR) 2009 (http://cires1.colorado.edu/jimenez/Papers/jgrd15378-sup-0003-txts01.pdf)l Xu et al. AS&T 2018 (https://www.tandfonline.com/doi/abs/10.1080/02786826.2018.1439570)'
    known_interferences: 'NA'
    link_to_supplemental_information: "This is the same HR-AMS as the Jimenez lab one (https://icarus.ucdavis.edu/instrument/445?organization=545).\r\nhttp://cires1.colorado.edu/jimenez-group/wiki/index.php/FAQ_for_AMS_Data_Users"
    additional_notes: 'Mass concentration accuracies (2-sigma) of 38% for OA and 34% for inorganic species have been estimated for field measures with AMS. However, for pure compounds and laboratory-generated SOA, the sensitivity to organic compounds (relative ionization efficiency, RIE) may be substantially different from the standard applied RIE of 1.4, so uncertainties/biases may be much larger for OA if not constrained with additional knowledge of experiment-specific OA sensitives, comparisons to other measurements (e.g. SMPS, CPMA), etc. See for example Xu et al., 2018: https://www.tandfonline.com/doi/full/10.1080/02786826.2018.1439570'
    organization_id: '562'
    created_at: '2025-05-29T22:45:46.000000Z'
    updated_at: '2025-05-29T22:45:46.000000Z'
    column_descriptors: 'In ammonium sulfate experiments, SiSOA is corrected for collection efficiency and wall loss. These are not corrected for in DOS experiments.'
    sampling_protocol: 'Online'
    skip_headers: '1'
    tubing_inner_diameter: ''
    what_is_measured: 'Submicron non-refractory aerosol OA, nitrate, sulfate, ammonium, chloride species mass concentrations. O/C and H/C elemental ratios. Positive matrix factorization sometimes applied to separate OA into source factor time series and mass spectra.'
    measurement_uncertainty: 'Up to factor of 2 if not calibrated recently but more typically within. ~50%. If calibrated in last few days, typically within ~10%'
    measurement_units: '(a) time (local) (b) all species in ug/m3'

---
tlocal_AMS,SiSOA_ugm3,mz325_ugm3,mz327_ugm3,C3H9Si_ugm3,CHO_ugm3,CH2o_ugm3,CH3_ugm3,NH4_ugm3,SO4_ugm3
7/8/2024 10:50:00,,,,,,,,-0.000653843,-0.000544212
7/8/2024 10:55:00,,,,,,,,-0.00101243,-0.00195958
7/8/2024 11:00:00,,,,,,,,-0.000326039,0.00159664
7/8/2024 11:05:00,,,,,,,,-0.0015105,0.00515223
7/8/2024 11:10:00,,,,,,,,-0.000385174,0.00236696
7/8/2024 11:15:00,,,,,,,,0.000608662,0.00550595
7/8/2024 11:20:00,,,,,,,,,
7/8/2024 11:25:00,,,,,,,,,
7/8/2024 11:30:00,,,,,,,,,
7/8/2024 11:35:00,,,,,,,,-0.00120264,0.00252374
7/8/2024 11:40:00,,,,,,,,,
7/8/2024 11:45:00,,,,,,,,-0.000581496,0.00175027
7/8/2024 11:50:00,,,,,,,,-0.000212271,0.00183213
7/8/2024 11:55:00,,,,,,,,-0.0012166,0.00193902
7/8/2024 12:00:00,,,,,,,,-0.000423211,0.00431613
7/8/2024 12:05:00,,,,,,,,-0.00106487,0.00236919
7/8/2024 12:10:00,,,,,,,,0.000214561,0.00251747
7/8/2024 12:15:00,,,,,,,,-0.00103154,0.00210093
7/8/2024 12:20:00,,,,,,,,-0.0015121,0.00551957
7/8/2024 12:25:00,,,,,,,,-0.00103951,0.00317721
7/8/2024 12:30:00,,,,,,,,-0.00158189,3.30054e-05
7/8/2024 12:35:00,,,,,,,,-0.00160472,0.000740833
7/8/2024 12:40:00,,,,,,,,-0.00101918,0.00054802
7/8/2024 12:45:00,,,,,,,,-0.00115765,0.000587006
7/8/2024 12:50:00,,,,,,,,-0.0013488,0.00627412
7/8/2024 12:55:00,,,,,,,,0.000567039,0.0175938
7/8/2024 13:00:00,,0.00131759,0.00139609,0.0471967,0.0460181,,0.0600683,3.85542,16.778
7/8/2024 13:05:00,0.293034,0.000362342,0.00160352,0.0544185,0.0357317,,0.0253792,4.36305,18.9441
7/8/2024 13:10:00,0.365184,0.000466035,0.00114376,0.0508454,0.0708954,0.00356771,0.0328426,6.18748,26.954
7/8/2024 13:15:00,0.385248,0.000875824,0.00132181,0.0536323,0.069109,0.00596041,0.0394947,10.5459,45.75
7/8/2024 13:20:00,0.386227,0.000572185,0.00132425,0.0595051,0.0591594,0.00884319,0.0414208,11.5508,50.0231
7/8/2024 13:25:00,0.411875,0.000843113,0.00146408,0.0542613,0.0690652,0.00459942,0.0336482,12.9036,55.9594
7/8/2024 13:30:00,0.390047,0.000641215,0.00148857,0.0566455,0.0700206,0.00324001,0.0363356,12.8287,55.4853
7/8/2024 13:35:00,0.381824,0.000842902,0.001365,0.0561373,0.0678815,0.00338503,0.0371228,12.754,54.8913
7/8/2024 13:40:00,0.379937,0.000734474,0.00130966,0.0574558,0.0655253,0.00399599,0.0252717,12.849,55.4881
7/8/2024 13:45:00,0.3799,0.000950742,0.00142961,0.0562476,0.0569969,0.00326192,0.0326024,12.8325,55.3564
7/8/2024 13:50:00,0.375929,0.000858473,0.00141832,0.0541188,0.0514049,-0.000744361,0.033507,12.7134,54.7318
7/8/2024 13:55:00,0.402211,0.000922123,0.0016631,0.0595708,0.0461351,0.00310569,0.037035,12.5965,54.163
7/8/2024 14:00:00,0.41084,0.000876177,0.00141319,0.0595037,0.0500987,0.00030674,0.0430701,11.3229,48.7685
7/8/2024 14:05:00,0.438481,0.00082714,0.00165137,0.0611853,0.0710156,-0.00433283,0.0531826,,
7/8/2024 14:10:00,,,,,,,,,
7/8/2024 14:15:00,0.442895,0.000565048,0.000966557,0.0515073,0.0860337,0.00659848,0.056589,,
7/8/2024 14:20:00,0.479585,0.000444045,0.000538349,0.0536678,0.0987957,0.0125569,0.068821,10.3783,44.5548
7/8/2024 14:25:00,0.383078,0.000856417,0.00115163,0.0478616,0.0532001,0.00826088,0.0376486,10.319,44.3161
7/8/2024 14:30:00,0.380772,0.000637821,0.00140238,0.0481614,0.0538,0.00247418,0.0325687,10.268,44.2863
7/8/2024 14:35:00,0.40375,0.000788118,0.00141712,0.0518221,0.0712036,0.0101838,0.0257945,10.2475,44.2971
7/8/2024 14:40:00,0.403374,0.00088495,0.00138654,0.0455083,0.0687909,0.0112492,0.0329253,10.3023,44.4381
7/8/2024 14:45:00,0.425924,0.00191334,0.00131369,0.0553029,0.0770594,0.00488354,0.0383144,10.2973,44.187
7/8/2024 14:50:00,0.838527,0.0239459,0.0071625,0.202573,0.0898474,0.0306054,0.0846205,9.94986,42.7507
7/8/2024 14:55:00,1.13044,0.0385187,0.0113775,0.308285,0.10266,0.045765,0.105213,9.70939,41.6619
7/8/2024 15:00:00,1.30233,0.0460283,0.0138499,0.360744,0.127499,0.0560128,0.120659,9.67379,41.3695
7/8/2024 15:05:00,1.38266,0.0501024,0.0156584,0.386533,0.161227,0.0592673,0.109706,9.53863,41.0547
7/8/2024 15:10:00,1.44951,0.0519131,0.0165071,0.399935,0.166004,0.062705,0.132055,9.46043,40.6711
7/8/2024 15:15:00,1.45096,0.0523259,0.0166491,0.404569,0.13531,0.0693754,0.137958,9.43336,40.3992
7/8/2024 15:20:00,1.4897,0.0536883,0.0174945,0.411382,0.161,0.0606645,0.147264,9.45231,40.5868
7/8/2024 15:25:00,1.48822,0.0540477,0.0182282,0.410106,0.156151,0.0640409,0.140989,9.44288,40.434
7/8/2024 15:30:00,1.46541,0.0529897,0.0192102,0.411531,0.135083,0.0608467,0.138827,9.44921,40.3723
7/8/2024 15:35:00,1.48857,0.0531863,0.0199023,0.412318,0.141571,0.0616626,0.149376,9.43172,40.283
7/8/2024 15:40:00,1.48644,0.0537872,0.0197765,0.412282,0.15016,0.0661518,0.14976,9.40482,40.2296
7/8/2024 15:45:00,1.51194,0.0532,0.0198677,0.406835,0.159659,0.0675901,0.147468,9.42951,40.3627
7/8/2024 15:50:00,1.47328,0.053215,0.0208866,0.407177,0.135816,0.0637311,0.147903,9.40855,40.2229
7/8/2024 15:55:00,1.51693,0.0531801,0.020969,0.402769,0.161108,0.0672673,0.152443,9.40334,40.1493
7/8/2024 16:00:00,1.53307,0.0528756,0.0212865,0.404592,0.184633,0.0694991,0.150452,9.41995,40.2064
7/8/2024 16:05:00,1.52324,0.0513367,0.0218307,0.398605,0.181592,0.0717575,0.14681,9.42437,40.2314
7/8/2024 16:10:00,1.5235,0.0524349,0.0216816,0.392812,0.181935,0.0738924,0.149908,9.33792,40.1091
7/8/2024 16:15:00,1.51077,0.0513862,0.0221652,0.391269,0.178825,0.0709745,0.156896,9.43324,40.2943
7/8/2024 16:20:00,1.53008,0.0509042,0.0231711,0.386328,0.190538,0.0707137,0.156019,9.38413,40.0961
7/8/2024 16:25:00,1.50686,0.0506994,0.0230198,0.387774,0.150114,0.0768213,0.169015,9.36105,40.134
7/8/2024 16:30:00,1.52357,0.0503432,0.0245262,0.383863,0.180817,0.0754593,0.155997,9.36884,40.0475
7/8/2024 16:35:00,1.54853,0.0503843,0.0239082,0.378324,0.189998,0.0819819,0.172035,9.35505,40.0338
7/8/2024 16:40:00,1.53496,0.0499827,0.0246774,0.381039,0.169515,0.0758854,0.174072,9.34626,40.0016
7/8/2024 16:45:00,1.47426,0.0500255,0.025352,0.375489,0.154533,0.0791543,0.153111,9.38645,40.0442
7/8/2024 16:50:00,1.52813,0.0492159,0.0249388,0.370758,0.191061,0.078027,0.166538,9.34267,40.0318
7/8/2024 16:55:00,1.53294,0.0496638,0.0261063,0.376317,0.195339,0.0869942,0.16004,9.33615,39.9015
7/8/2024 17:00:00,1.54285,0.0490118,0.0249804,0.376941,0.186428,0.0783535,0.16657,9.49999,40.667
7/8/2024 17:05:00,1.55802,0.0501018,0.0256895,0.379566,0.204558,0.0874859,0.160796,9.28629,39.7285
7/8/2024 17:10:00,1.53898,0.0498015,0.0254947,0.381314,0.202217,,0.160113,,
7/8/2024 17:15:00,,,,,,,,,
7/8/2024 17:20:00,,0.0490055,,,0.170159,,0.156771,,
7/8/2024 17:25:00,1.49202,0.0488558,0.0249619,0.370007,0.18377,0.0740851,0.151372,9.2361,39.5613
7/8/2024 17:30:00,1.48982,0.048967,0.02489,0.370332,0.172973,0.0755149,0.159591,9.22949,39.4415
7/8/2024 17:35:00,1.51844,0.0496142,0.0252489,0.368253,0.183674,0.076175,0.169507,9.18822,39.4549
7/8/2024 17:40:00,1.47443,0.0490929,0.025608,0.372724,0.164749,0.070299,0.15155,8.78663,37.6576
7/8/2024 17:45:00,1.4924,0.049557,0.0255813,0.367077,0.197058,0.068395,0.141846,7.86723,33.6161
