TITLE: CEOP EOP-3 GAPP ARM NSA Radiosonde Data Set


CONTACT:


Raymond McCord
Building 1507
PO Box 2008, MS 6407
Oak Ridge, TN 37831-6407

Telephone: (865) 574-7827
Fax: (865) 574-4665

E-Mail: mccordra@ornl.gov


1.0  DATA SET OVERVIEW


This data set contains the daily radiosonde observations from the
Coordinated Enhanced Observing Period (CEOP) Global Energy and Water 
Cycle Experiment (GEWEX) Americas Prediction Project (GAPP) Reference 
Site operated by the Atmospheric Radiation Measurement (ARM) Program at 
its North Slope of Alaska (NSA) facility in Barrow, Alaska.  This data 
set includes 2-sec vertical resolution observations of temperature, 
pressure, dew point, wind speed, wind direction and relative humdity.  
This data set covers the time period 1 October 2002 through 30 September 
2003.  Further information about the ARM NSA site is available at the 
following URL: http://www.arm.gov
These data are in netcdf format.

1.1  Station Locations

EF = Extended Facility

Site                Elev (m)  Latitude  Longitude 
-------------------------------------------------
Barrow, AK:    C-1    27        71.32    -156.62 


2.0  INSTRUMENTATION DESCRIPTION

The ARM NSA radiosonde measurements are from their Balloon-Borne Sounding
System (BBSS).

2.1  BBSS Sensors

Vaisala RS90-a (PTU only, dual humicap).  The RS90-AG is also occasionally used.

More information can be found:
http://www.arm.gov/instruments/instrument.php?id=6


3.0  DATA COLLECTION AND PROCESSING


3.1  ARM Data Collection and Processing

More information can be found:
http://www.arm.gov/instruments/instrument.php?id=6

3.2  UCAR/JOSS Data Processing

The University Corporation for Atmospheric Research/Joint Offfice for
Science Support (UCAR/JOSS) conducted no processing on these data.


4.0  QUALITY CONTROL PROCEDURES


4.1  ARM Quality Control Procedures

For detailed information on BBSS quality control procedures please
see:

http://www.arm.gov/instruments/instrument.php?id=6.

4.2  UCAR/JOSS Quality Control Procedures

UCAR/JOSS conducted no QC procedures on these data.


5.0  GAP FILLING PROCEDURES


No gap filling procedures were applied to these data by either
ARM or UCAR/JOSS.


6.0  DATA REMARKS

6.1 File Naming Procedures

nsasondewnpnC1.b1.yyyymmdd.hhmmss.cdf

where 
      nsa is the reference site
      sondewnpn is the product
      C1 is the site (Barrow, AK)
      b1 is the ARM processing level
      yyyy is the four digit year
      mm is the month
      dd is the day
      hh is the hour
      mm is the minutes
      ss is the seconds

6.2  ARM Data Quality Reports

6.2.1 20 August 2004 at 1844 UTC

	This is a test sounding done using an RS80H radiosonde, not the ARM standard
	RS90 radiosonde.

6.2.2 29 November 2004 at 2307 UTC
	This is a test sounding done using an RS80H radiosonde, not the ARM standard
        RS90 radiosonde.

7.0  REFERENCE REQUIREMENTS


To support the continuation of this program, please include the
following 'credit line' in the acknowledgments of your
publication:

"Data were obtained from the Atmospheric Radiation Measurement
(ARM) Program sponsored by the U.S. Department of Energy, Office
of Science, Office of Biological and Environmental Research,
Environmental Sciences Division."


8.0  REFERENCES

Further information on ARM BBSS instrumentation (including calibration
and maintenance and references) can be found at the ARM BBSS web page:

http://www.arm.gov/instruments/instrument.php?id=6.