Dataset metafile (UCAR format):

PI/DATA CONTACT= Steve Howel and Lindsey Shank(U of Hawaii),email: sghowell@hawaii.edu; phone: 808-956-5185; address: Univ. Hawaii Dep't Ocean, 1000 Pope Rd, Honolulu, HI 96822  
DATA COVERAGE = START: 20081015000000; STOP: 20081115230000 UTC 
PLATFORM/SITE = C130
INSTRUMENT = Non-refractory aerosol composition from the Aerodyne AMS on the NCAR C-130. Aerodyne aerosol mass spectrometer operating in V-mode, with heater near 600 C. This is bulk composition only (no size distributions).
LOCATION = mobile
DATA VERSION = 2.0 (October 2010)
REMARKS= DATA_INFO: Units are micrograms per standard cubic meter (101325 Pa, 273 K). Particle sizes 50 to 500 nm vacuum aerodynamic diameter.
REMARKS= UNCERTAINTY: 50% for accuracy (pending further calibration work), precision is much better, perhaps 10%.
REMARKS = Missing data = -9999
REMARKS = Data point Date/Time provided in UTC
REMARKS = Start_UTC, seconds
REMARKS = Mid_UTC, seconds
REMARKS = NO3-, micrograms per standard meter cubed (101325 Pa, 273 K)
REMARKS = SO4=, micrograms per standard meter cubed (101325 Pa, 273 K)
REMARKS = NH4+, micrograms per standard meter cubed (101325 Pa, 273 K)
REMARKS = organic matter, micrograms per standard meter cubed (101325 Pa, 273 K)
REMARKS = Start_UTC	Stop_UTC	Mid_UTC	NO3	SO4	NH4	ORG



Dataset metafile (NASA format):

38 1001
Howell, S; Shank, L
University of Hawaii
Non-refractory aerosol composition from the Aerodyne AMS on the NCAR C-130
VOCALS
1 1
2008 10 15 2009 07 24
0
Stop_UTC, (number of seconds from 0000 UTC)
6
1 1 1 1 1 1
-9999 -9999 -9999 -9999 -9999 -9999
Start_UTC, seconds
Mid_UTC, seconds
NO3-, micrograms per standard meter cubed (101325 Pa, 273 K)
SO4=, micrograms per standard meter cubed (101325 Pa, 273 K)
NH4+, micrograms per standard meter cubed (101325 Pa, 273 K)
organic matter, micrograms per standard meter cubed (101325 Pa, 273 K)
0
18
PI_CONTACT_INFO: email: sghowell@hawaii.edu; phone: 808-956-5185; address: Univ. Hawaii Dep't Ocean, 1000 Pope Rd, Honolulu, HI 96822
PLATFORM: NCAR C-130
LOCATION: Contained in aircraft data files.
ASSOCIATED_DATA: N/A
INSTRUMENT_INFO: Aerodyne aerosol mass spectrometer operating in V-mode, with heater near 600 C. This is bulk composition only (no size distributions).
DATA_INFO: Units are micrograms per standard cubic meter (101325 Pa, 273 K). Particle sizes 50 to 500 nm vacuum aerodynamic diameter.
UNCERTAINTY: 50% for accuracy (pending further calibration work), precision is much better, perhaps 10%.
ULOD_FLAG: -7777 -7777 -7777 -7777 -7777 -7777
ULOD_VALUE: N/A
LLOD_FLAG: -8888 -8888 -8888 -8888 -8888 -8888
LLOD_VALUE: N/A
DM_CONTACT_INFO: N/A
PROJECT_INFO: VAMOS Ocean Cloud Land Atmosphere Study (VOCALS), 15 October to 15 November 2008
STIPULATIONS_ON_USE: NH4 data is still preliminary.
OTHER_COMMENTS: N/A
REVISION: RB
RB: Not all calibration corrections are complete:  Ionization efficiency is close, but transmission efficiency needs more work.  This release has a collection efficiency applied which takes into account the neutralization ratio (i.e., NH4+ : SO4=) that ranges between 0.5 and 1.  Because signals were near detection limits for some species (i.e., Organics), there may occasionally be small negative values. Exact sampling times are not known exactly; recorded times are the end of sampling periods, but the mass spec open mode is 1 of 3 modes being used and the time of each mode is not recorded, so actual sample times may be a few seconds earlier than indicated. Data has been timeshifted to account for inlet tubing length.
Start_UTC	Stop_UTC	Mid_UTC	NO3	SO4	NH4	ORG