Skip to data content Skip to data search

Combined/Merged Chemistry and LRT



This is a merged data set created by Burton Gray. The following data sets are included: - Data Merge: Burton Gray, - DMS, SO2: Byron Blomquist, - H2O2, CH3OOH: Brian Heikes, - H2O2_OSul: Daniel O'Sullivan, - OH, H2SO4, MSA: Lee Mauldin, - HO2, HO2_RO2: Christopher Cantrell, - Navigation, State Parameter, and Microphysics: Allen Schanot, The aforementioned chemistry datasets have been merged onto the timescale for the Navigation, State Parameter, and Microphysics LRT data set (available at For the chemistry data sets, the time interval (Start and Stop times) for each data point is defined as the interval between the time stamp for that data point and the time stamp for the next data point. The exception to this is the Heikes and O'Sullivan data sets, in which Start and Stop times are given for each data point. If there is no data available for a given time interval, the appropriate null value is returned. The chemistry variables (all gas-phase), description, units, and null values are: - DMS, dimethyl sulfide, pptv, -99999 - SO2, sulfur dioxide, pptv, -99999 - H2O2, hydrogen peroxide, pptv, -9999 - CH3OOH, methyl-hydrogen peroxide, pptv, -9999 - H2O2_OSul, hydrogen peroxide (alternate), pptv, -9999 - OH, hydroxyl radical, molec/cm3, -99999 - H2SO4, sulfuric acid, molec/cm3, -99999 - MSA, methane sulfonic acid, molec/cm3, -99999 - HO2, HO2 radical, pptv, -99999 - HO2_RO2, HO2 + RO2 radical, pptv, -99999 DATA FORMAT The data is in netCDF format.

Data access

  • ORDER data for delivery by FTP

Additional information

Data Quality final
  • 1.0 (2011-09-14)
Subscribe Subscribe to receive email when new or updated data is available.
Related projects
Spatial Type point
Frequency 1 second
Language English
GCMD Science Keywords Expand keywords
Related links

Temporal coverage

Begin datetime 2007-08-04 20:00:00
End datetime 2007-09-07 23:59:05

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 10.00, Minimum (South) Latitude: -10.00
Minimum (West) Longitude: -165.00, Maximum (East) Longitude: -150.00

Primary point of contact information

Bob Rilling <>

Additional contact information


Gray, B., et al. 2011. Combined/Merged Chemistry and LRT. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 24 Jun 2024.

Today's date is shown: please replace with the date of your most recent access.

Additional citation styles

The citation text below is from the DataCite Content Resolver service and may take a few seconds to load. The styles and locales are obtained from CrossCite, which also provides a citation formatter. See ReFindit for another alternative. Formatting is not perfect: please verify and edit before use. Today's date is shown: please replace with the date of your most recent access.

Style: Locale:

Ancillary information

Metadata download

Note that your browser may not display the above metadata links, but automatically save them as files in a folder such as "Downloads"