TITLE: Radiation ARM Solar-Infrared Radiation System (SIRS) Data [JOSS] 
     
     
CONTACTS:

Tom Stoffel
National Renewable Energy Laboratory
1617 Cole Blvd.
Golden, CO 80401-3393
Voice: 303-384-6395
Fax: 303-384-6391
E-mail: Tom_Stoffel@nrel.gov


1.0  DATA SET OVERVIEW
     

This data set contains 60 second resolution up/downwelling long/shortwave
hemispheric irradiances, and diffuse/direct shortwave irradiance from the
Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) 
Southern Great Plains (SGP) Solar Infrared Radiation Station (SIRS).  
These SIRS stations are located at many of the ARM SGP Extended Facilities
in southern Kansas and northern Oklahoma.  This data set covers the period
from 13 May to 25 June 2002.  The data are in netCDF format.


2.0  INSTRUMENT DESCRIPTION


2.1  Instrumentation

Full information on the ARM SIRS instrumentation is available from ARM at:

http://www.arm.gov/docs/instruments/static/sirs.html

2.2  Station Locations

Site                Elevation (m)      Lat.     Long.
Larned, KS: EF-1        632          38.202N   99.316W
Hillsboro, KS: EF-2     450          38.306N   97.301W
LeRoy, KS:EF-3          338          38.201N   95.597W
Plevna, KS: EF-4        513          37.953N   98.329W
Halstead, KS: EF-5      440          38.114N   97.513W
Towanda, KS: EF-6       409          37.842N   97.020W
Elk Falls, KS: EF-7     283          37.383N   96.180W
Coldwater, KS: EF-8     664          37.333N   99.309W
Ashton, KS: EF-9        386          37.133N   97.266W
Tyro, KS: EF-10         248          37.068N   95.788W
Byron, OK: EF-11        360          36.881N   98.285W
Pawhuska, OK: EF-12     331          36.841N   96.427W
Lamont, OK: EF-13       318          36.605N   97.485W
Ringwood, OK: EF-15     418          36.431N   98.284W
Vici, OK: EF-16         602          36.061N   99.134W
Morris, OK: EF-18       217          35.687N   95.856W
El Reno, OK: EF-19      421          35.557N   98.017W
Meeker, OK: EF-20       309          35.564N   96.988W
Okmulgee, OK: EF-21     240          35.615N   96.065W
Cordell, OK: EF-22      465          35.354N   98.977W
Cyril, OK: EF-24        409          34.883N   98.205W


3.0  DATA COLLECTION AND PROCESSING


Full information on the ARM SIRS data collection and processing
is available from ARM at:

http://www.arm.gov/docs/instruments/static/sirs.html

General information on ARM data quality is available from ARM at:

http://dq.arm.gov/cgi-bin/dqmenu.pl

UCAR/JOSS conducted no processing or quality control on these data.


4.0  DATA FORMAT AND FILE NAMING


4.1  Data Format

These data are in network Common Data Form (netCDF) format.  For
information on netCDF see:

http://www.unidata.ucar.edu/packages/netcdf/index.html

4.2  File Naming Conventions

The data file names have the following format:

sgpsirsE25.a2.20020213.000000.cdf

where:
        sgpsirs is the data type (60 sec SIRS)
        E25 represents the facility id (here ARM SGP extended facility 25)
        a2 represents the data level
        2002 - four digit year
        02 - two digit month
        13 - two digit day
        00 - two digit hour
        00 - two digit minute
        00 - two digit second
        cdf - netCDF format extention


5.0  DATA REMARKS


None.


6.0  REFERNCES


None.