Title: Discoverer Gas Phase NH3 Concentrations Data

Contact:

   Patricia Quinn
   OCRD
   NOAA/Pacific Marine Environmental Laboratory
   7600 Sand Point Way NE
   Seattle, WA, USA, 98115
   Telephone: (206) 526-6892
   Facsimile: (206) 526-6744
   E-Mail Address: quinn@pmel.noaa.gov


Data Set Description:

NOAA PMEL Measured Atmospheric Gas Phase NH3 Concentrations

ACE-1, Leg 2: NOAA PMEL measured atmospheric gas phase NH3 concentrations
and calculated air/sea NH3 fluxes from the Discoverer.

Filter packs consisting of a Teflon filter for the collection of
particles and oxalic acid coated filters for the collection of NH3(g)
were used for sample collection. The oxalic acid coated filters were
extracted and analyzed for NH4+ by ion chromatography.

Air/sea ammonia fluxes were calculated from the measured
atmospheric (NH3)g, seawater pH, and seawater [NHx]s using the
method described by Quinn et al., 1996, Biogeochemistry, in press.

The uncertainty associated with the measured NH3(g) concentrations
and air/sea fluxes is estimated to be +/- 25 to 50%.

Codes used in the spreadsheet:

"NA, not available."

Format: comma-delimited ASCII.

1, Start Date (YYYY/MM/DD) (UTC)
2, Start Time (HH:MM:SS) (UTC)
3, Stop Date (YYYY/MM/DD) (UTC)
4, Stop Time (HH:MM:SS) (UTC)
5, Start Time (UTC) - Julian Decimal Date
6, Stop Time (UTC) - Julian Decimal Date
7, Start Latitude
8, Stop Latitude
9, Start Longitude
10, Stop Longitude
11, (NH3)g in nmol/m3
12, F, umol/m2/d


File Name Conventions:
   atmnh3fl.dat


References:
  Quinn et al., 1996, Biogeochemistry, in press.