NASA ER-2 Lyman Alpha Hygrometer Data
https://data.eol.ucar.edu/dataset/6.23

Summary
This dataset contains water vapor measurements from the Harvard University
Lyman Alpha instrument aboard the ER-2 for 9 missions during CEPEX. The
instrument used the techniques of photofragment fluorescence combined with
dual path absorption to measure water vapor concentrations ranging from 1013
to 1016 molecules/cubic centimeters at pressures from 50 to 500 mb. The
detection scheme utilized the Lyman-Alpha photons (121.6 nanometers) to photo-
dissociate water vapor and produce excited OH molecules which emit photons
that are detected by a photomultiplier near 314 nanometers. Units are in ppmv.
Principal Investigators were Weinstock, Dessler, Hintsa, and Anderson (Harvard
University).

Identifiers
 * Local archive identifier: 6.23
 * doi:10.26023/2RRX-RFPH-EA11
   https://doi.org/10.26023/2RRX-RFPH-EA11

Versions
  1.0

Citation
 Weinstock, E., et al. 2006. CEPEX: NASA ER-2 Lyman Alpha Hygrometer Data.
 Version 1.0. UCAR/NCAR - Earth Observing Laboratory.
 https://doi.org/10.26023/2RRX-RFPH-EA11 Accessed 25 Apr 2024.

Additional citation styles can be generated by entering the DOI
at CrossCite (https://citation.crosscite.org/).

Acknowledgement
In addition to the citation reference and any other acknowledgements,
please acknowledge NCAR/EOL in your publications with text such as:

  Data provided by NCAR/EOL under the sponsorship of
  the National Science Foundation.
  https://data.eol.ucar.edu/

Related projects
 * CEPEX: Central Equatorial Pacific Experiment
   https://data.eol.ucar.edu/project/CEPEX

Additional information
 * Spatial Type: point
 * Frequency: 1 second
 * Language: English

Categories
 * Aircraft

Platforms
 * NASA ER-2

Instruments
 * Hygrometers

GCMD Science Keywords
 * EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > WATER VAPOR

Related links
 * homepage: CEPEX EOL Homepage
   https://www.eol.ucar.edu/field_projects/cepex

Temporal coverage
 * Begin datetime: 1993-03-17 00:00:00 
 * End datetime: 1993-04-05 23:59:59 

Spatial coverage
 * Maximum (North) Latitude: 20.00
 * Minimum (South) Latitude: -20.00
 * Minimum (West) Longitude: -140.00
 * Maximum (East) Longitude: 140.00

Primary contact information
 * pointOfContact: EOL Data Support <datahelp@eol.ucar.edu>
   https://data.eol.ucar.edu/contact/show/1

Additional contact information
 * originator: Elliot M. Weinstock <weinstock@huarp1.harvard.edu>
   https://data.eol.ucar.edu/contact/show/121
 * author: Elliot M. Weinstock <weinstock@huarp1.harvard.edu>
   https://data.eol.ucar.edu/contact/show/121
 * author: Eric J. Hintsa <eric.j.hintsa@noaa.gov>
   https://data.eol.ucar.edu/contact/show/1151
 * author: Andrew E. Dessler
   https://data.eol.ucar.edu/contact/show/3000
 * author: James G. Anderson
   https://data.eol.ucar.edu/contact/show/3001

Alternate metadata formats
 * DataCite: https://data.eol.ucar.edu/dataset/6.23?format=datacite
 * ISO/TC 211: https://data.eol.ucar.edu/dataset/6.23?format=isotc211