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.